journal article·2021-03

Electrospun TiO2 nanofibers for water and wastewater treatment: a review

Belisa A. Marinho, Selene M. A. Guelli U. de Souza, Antônio Augusto U. de Souza, Dachamir Hotza

Journal of Materials Science· Volume 56· Issue 9
Publisher page

Abstract

Water and wastewater treatment is a global challenge that requires innovative solutions. Electrospinning is a versatile and simple technique that allows the generation of ultrathin fibers of numerous compositions. Titanium dioxide is a photocatalyst with applications in several technological fields. Thus, the use of electrospinning to produce TiO2 nanofibers is an approach that may bring new insights for the treatment of contaminated water. In this review, it is aimed to provide a comprehensive overview of electrospinning technique and electrospun TiO2 nanofibers production, as well as their application in water and wastewater treatment. First, it is provided a brief introduction to the development of electrospinning-related processes, followed by a discussion of its principle, apparatus, methods and materials commonly used. In the sequence, it is presented the current and potential methods for electrospun TiO2 nanofibers and some aspects related to experimental conditions, catalysts immobilization, metal and nonmetal doping, characterization techniques and applications. The effects of processing parameters on properties as catalyst band gap, adsorption capacity and catalytic efficiency are also discussed. Afterward, the application of electrospun TiO2 nanofibers for pollutants removal from water through photodegradation is highlighted by focusing on some representative examples. Finally, the perspectives are presented regarding challenges, opportunities, and new directions for the application of electrospun TiO2 fibers.
Source: openaire · Quality: candidate unverified · Source record ↗

Research context

OpenAlex topics: Electrospun Nanofibers in Biomedical Applications · Membrane Separation Technologies · Advanced Photocatalysis Techniques

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

References (100+)

Show source-provided references
1. Marinho BA, Cristóvão RO, Boaventura RAR, Vilar VJP (2019) As(III) and Cr(VI) oxyanion removal from water by advanced oxidation/reduction processes—a review. Environ Sci Pollut Res 26:2203–222710.1007/s11356-018-3595-5 ↗
2. Mazur LP, Pozdniakova TA, Mayer DA, de Souza SMAGU, Boaventura RAR, Vilar VJP (2017) Cation exchange prediction model for copper binding onto raw brown marine macro-algae Ascophyllum nodosum: batch and fixed-bed studies. Chem Eng J 316:255–276.10.1016/j.cej.2017.01.080 ↗
3. Nidheesh PV, Singh TSA (2017) Arsenic removal by electrocoagulation process: Recent trends and removal mechanism. Chemosphere 181:418–43210.1016/j.chemosphere.2017.04.082 ↗
4. Fadlalla MI, Kumar PS, Selvam V, Babu SG (2020) Emerging energy and environmental application of graphene and their composites: a review. J Mater Sci 55:7156–7183. https://doi.org/10.1007/s10853-020-04474-010.1007/s10853-020-04474-0 ↗
5. Matsuzawa S, Maneerat C, Hayata Y, Hirakawa T, Negishi N, Sano T (2008) Immobilization of TiO2 nanoparticles on polymeric substrates by using electrostatic interaction in the aqueous phase. Appl Catal B 83:39–4510.1016/j.apcatb.2008.01.036 ↗
6. Armstrong M, Nealy S, Severino C, Maniukiewicz W, Modelska M, Binczarski M, Witonska I, Chawla KK, Stanishevsky A (2020) Composite materials made from glass microballoons and ceramic nanofibers for use as catalysts and catalyst supports. https://doi.org/10.1007/s10853-020-04956-1J Mater Sci 55:12940–1295210.1007/s10853-020-04956-1 ↗
7. Cardona AI, Candal R, Sánchez B, Ávila P, Rebollar M (2004) TiO2 on magnesium silicate monolith: effects of different preparation techniques on the photocatalytic oxidation of chlorinated hydrocarbons. Energy 29:845–85210.1016/S0360-5442(03)00184-1 ↗
8. Shephard GS, Stockenström S, de Villiers D, Engelbrecht WJ, Wessels GFS (2002) Degradation of microcystin toxins in a falling film photocatalytic reactor with immobilized titanium dioxide catalyst. Water Res 36:140–14610.1016/S0043-1354(01)00213-5 ↗
9. Vella G, Imoberdorf GE, Sclafani A, Cassano AE, Alfano OM, Rizzuti L (2010) Modeling of a TiO2-coated quartz wool packed bed photocatalytic reactor. Appl Catal B 96:399–40710.1016/j.apcatb.2010.02.037 ↗
10. Ávila P, Sánchez B, Cardona AI, Rebollar M, Candal R (2002) Influence of the methods of TiO2 incorporation in monolithic catalysts for the photocatalytic destruction of chlorinated hydrocarbons in gas phase. Catal Today 76:271–27810.1016/S0920-5861(02)00225-0 ↗
11. Subrahmanyam M, Boule P, Durga Kumari V, Naveen Kumar D, Sancelme M, Rachel A (2008) Pumice stone supported titanium dioxide for removal of pathogen in drinking water and recalcitrant in wastewater. Solar Energy 82:1099–1106.10.1016/j.solener.2008.05.007 ↗
12. Altaf AA, Ahmed M, Hamayun M, Kausar S, Waqar M, Badshah A (2020) Titania nano-fibers: a review on synthesis and utilities. Inorg Chim Acta 501:11926810.1016/j.ica.2019.119268 ↗
13. LeCorre-Bordes D, Tucker N, Huber T, Buunk N, Staiger MP (2016) Shear-electrospinning: extending the electrospinnability range of polymer solutions. J Mater Sci 51:6686–6696. https://doi.org/10.1007/s10853-016-9955-y10.1007/s10853-016-9955-y ↗
14. Pascariu P, Airinei A, Iacomi F, Bucur S, Suchea MP (2019) Chapter 12, Electrospun TiO2-based nanofiber composites and their bio-related and environmental applications. In: Dinca V, Suchea MP (eds) Functional nanostructured interfaces for environmental and biomedical applications, Elsevier, Amsterdam, pp 307–321.10.1016/B978-0-12-814401-5.00012-8 ↗
15. Sekar A, Manickam M (2019) Current trends of Electrospun nanofibers in water and wastewater treatment. In: Bui XT, Chiemchaisri C, Fujioka T, Varjani S (eds) Water and wastewater treatment technologies. Springer, Singapore, pp 469–485.10.1007/978-981-13-3259-3_21 ↗
16. Gugulothu, D, Barhoum, A, Nerella, R, Ajmer, R, Bechelany, M (2018) Fabrication of nanofibers: electrospinning and non-electrospinning techniques. In: Barhoum A, Bechelany M, Makhlouf ASH (eds) Handbook of nanofibers. Springer International Publishing, pp 45–77.10.1007/978-3-319-42789-8_6-2 ↗
17. Barhoum A, Rasouli R, Yousefzadeh M, Rahier H, Bechelany M (2019) Nanofiber technologies: history and development. In: Barhoum A, Bechelany M, Makhlouf ASH (eds) Handbook of nanofibers. Springer International Publishing, Cham, pp 3–4310.1007/978-3-319-53655-2_54 ↗
18. Xue J, Wu T, Dai Y, Xia Y (2019) Electrospinning and electrospun nanofibers: methods. Mater Appl Chem Rev 119:5298–5415
19. Cooley JF (1902) Apparatus for electrically dispersing fluids, Google Patents, 1902.
20. Tucker N, Stanger J, Staiger M, Razzaq H, Hofman K (2012) The history of the science and technology of Electrospinning from 1600 to 1995. J Eng Fibers Fabrics, 7 (2012).10.1177/155892501200702S10 ↗
21. Senecal KJ, Ziegler DP, He J, Mosurkal R, Schreuder-Gibson H, Samuelson LA (2002) Photoelectric response from nanofibrous membranes. In: Materials Research Society Symposium–Proceedings, 2002, pp. 285–289.
22. Drew C, Wang X, Senecal K, Schreuder-Gibson H, He J, Kumar J, Samuelson LA (2002) Electrospun photovoltaic cells. J Macromolecular Sci Pure Appl Chem 39 A: 1085–1094.10.1081/MA-120014836 ↗
23. Zhu F, Zheng Y-M, Zhang B-G, Dai Y-R (2021) A critical review on the electrospun nanofibrous membranes for the adsorption of heavy metals in water treatment. J Hazard Mater 401:12360810.1016/j.jhazmat.2020.123608 ↗
24. Liao Y, Loh C-H, Tian M, Wang R, Fane AG (2018) Progress in electrospun polymeric nanofibrous membranes for water treatment: Fabrication, modification and applications. Prog Polym Sci 77:69–9410.1016/j.progpolymsci.2017.10.003 ↗
25. Istirohah T, Wihdatul Himmah S, Diantoro M (2019) Fabrication of aligned PAN/TiO2 fiber using Electric Electrospinning (EES). Mater Today Proc 13:211–216.10.1016/j.matpr.2019.03.216 ↗
26. Lia D, Xia YN (2004) Electrospinning of nanofibers: reinventing the wheel?. Adv Mater 16:1151–1170.10.1002/adma.200400719 ↗
27. Démuth B, Farkas A, Pataki H, Balogh A, Szabó B, Borbás E, Sóti PL, Vigh T, Kiserdei É, Farkas B, Mensch J, Verreck G, Van Assche I, Marosi G, Nagy ZK (2016) Detailed stability investigation of amorphous solid dispersions prepared by single-needle and high speed electrospinning. Int J Pharm 498:234–24410.1016/j.ijpharm.2015.12.029 ↗
28. Salehhudin H, Mohamad E, Mahadi W, Afifi A (2017) Multiple-jet electrospinning methods for nanofiber processing: a review. Mater Manuf Processes 33:479–49810.1080/10426914.2017.1388523 ↗
29. Prado-Prone G, Silva-Bermudez P, Almaguer-Flores A, García-Macedo JA, García VI, Rodil SE, Ibarra C, Velasquillo C (2018) Enhanced antibacterial nanocomposite mats by coaxial electrospinning of polycaprolactone fibers loaded with Zn-based nanoparticles. Nanomed Nanotechnol Biol Med 14:1695–170610.1016/j.nano.2018.04.005 ↗
30. Ali U, Niu H, Aslam S, Jabbar A, Rajput AW, Lin T (2017) Needleless electrospinning using sprocket wheel disk spinneret. J Mater Sci 52:7567–7577. https://doi.org/10.1007/s10853-017-0989-610.1007/s10853-017-0989-6 ↗
31. Zhou F-L, Gong R-H, Porat I (2009) Three-jet electrospinning using a flat spinneret. J Mater Sci 44:5501–5508. https://doi.org/10.1007/s10853-009-3768-110.1007/s10853-009-3768-1 ↗
32. Wu J, Hong Y (2016) Enhancing cell infiltration of electrospun fibrous scaffolds in tissue regeneration. Bioactive Mater 1:56–6410.1016/j.bioactmat.2016.07.001 ↗
33. w. Ho, Minwang (2012) negative voltage electrospinning and positive voltage electrospinning of tissue engineering scaffolds: a comparative study and charge retention on scaffolds, Nano LIFE, 02 (2012).
34. Demir MM, Yilgor I, Yilgor E, Erman B (2002) Electrospinning of polyurethane fibers. Polymer 43:3303–330910.1016/S0032-3861(02)00136-2 ↗
35. Kessick R, Fenn J, Tepper G (2004) The use of AC potentials in electrospraying and electrospinning processes. Polymer 45:2981–298410.1016/j.polymer.2004.02.056 ↗
36. Maheshwari S (2009) Assembly of Multi-Stranded Nanofiber Threads through AC Electrospinning. Adv Mater 21:349–35410.1002/adma.200800722 ↗
37. Zahmatkeshan M, Adel M, Bahrami S, Esmaeili F, Rezayat SM, Saeedi Y, Mehravi B, Jameie SB, Ashtari K (2018) Polymer based nanofibers: preparation, fabrication, and applications. In: Barhoum A, Bechelany M, Makhlouf A (eds) Handbook of nanofibers. Springer International Publishing, Cham, pp 1–47
38. Ahn Y, Lee SH, Kim HJ, Yang Y-H, Hong JH, Kim Y-H, Kim H (2012) Electrospinning of lignocellulosic biomass using ionic liquid. Carbohyd Polym 88:395–39810.1016/j.carbpol.2011.12.016 ↗
39. Luo CJ, Nangrejo M, Edirisinghe M (2010) A novel method of selecting solvents for polymer electrospinning. Polymer 51:1654–166210.1016/j.polymer.2010.01.031 ↗
40. Talwar S, Krishnan AS, Hinestroza JP, Pourdeyhimi B, Khan SA (2010) Electrospun nanofibers with associative polymer−surfactant systems. Macromolecules 43:7650–765610.1021/ma1013447 ↗
41. Luo CJ, Stride E, Edirisinghe M (2012) Mapping the influence of solubility and dielectric constant on electrospinning polycaprolactone solutions. Macromolecules 45:4669–468010.1021/ma300656u ↗
42. Wang X, Ding B, Yu J, Yang J (2011) Large-scale fabrication of two-dimensional spider-web-like gelatin nano-nets via electro-netting. Colloids Surf, B 86:345–35210.1016/j.colsurfb.2011.04.018 ↗
43. Yang G-Z, Li H-P, Yang J-H, Wan J, Yu D-G (2017) Influence of working temperature on the formation of electrospun polymer nanofibers. Nanoscale Res Lett 12:55–5510.1186/s11671-016-1824-8 ↗
44. Larrondo L, St. John Manley R (1981) Electrostatic fiber spinning from polymer melts. I. Experimental observations on fiber formation and properties. J Polymer Sci Polymer Phys Edn 19:909–920.10.1002/pol.1981.180190601 ↗
45. Xu J-F, Chen Y-Z, Wu D, Wu L-Z, Tung C-H, Yang Q-Z (2013) Photoresponsive hydrogen-bonded supramolecular polymers based on a stiff stilbene unit. Angew Chem Int Ed 52:9738–974210.1002/anie.201303496 ↗
46. Li D, Xia Y (2003) Fabrication of Titania nanofibers by electrospinning. Nano Lett 3:555–56010.1021/nl034039o ↗
47. Wang T, Gao Y, Tang T, Bian H, Zhang Z, Xu J, Xiao H, Chu X (2019) Preparation of ordered TiO2 nanofibers/nanotubes by magnetic field assisted electrospinning and the study of their photocatalytic properties. Ceram Int 45:14404–1441010.1016/j.ceramint.2019.04.158 ↗
48. Aghasiloo P, Yousefzadeh M, Latifi M, Jose R (2019) Highly porous TiO2 nanofibers by humid-electrospinning with enhanced photocatalytic properties. J Alloy Compd 790:257–26510.1016/j.jallcom.2019.03.175 ↗
49. Watthanaarun J, Pavarajarn V, Supaphol P (2005) Titanium (IV) oxide nanofibers by combined sol–gel and electrospinning techniques: preliminary report on effects of preparation conditions and secondary metal dopant. Sci Technol Adv Mater 6:240–24510.1016/j.stam.2005.02.002 ↗
50. Ananpattarachai J, Kajitvichyanukul P (2016) Enhancement of chromium removal efficiency on adsorption and photocatalytic reduction using a bio-catalyst, titania-impregnated chitosan/xylan hybrid film. J Cleaner Prod 130:126–13610.1016/j.jclepro.2015.10.098 ↗
51. Valério A, Wang J, Tong S, Ulson de Souza AA, Hotza D, Gómez González SY (2020) Synergetic effect of photocatalysis and ozonation for enhanced tetracycline degradation using highly macroporous photocatalytic supports. Chem Eng Process Process Intensification 149:107838.10.1016/j.cep.2020.107838 ↗
52. Ding Z, Hu X, Yue PL, Lu GQ, Greenfield PF (2001) Synthesis of anatase TiO2 supported on porous solids by chemical vapor deposition. Catal Today 68:173–18210.1016/S0920-5861(01)00298-X ↗
53. Pecchi G, Reyes P, Sanhueza P, Villaseñor J (2001) Photocatalytic degradation of pentachlorophenol on TiO2 sol–gel catalysts. Chemosphere 43:141–14610.1016/S0045-6535(00)00265-4 ↗
54. Sonawane RS, Hegde SG, Dongare MK (2003) Preparation of titanium(IV) oxide thin film photocatalyst by sol–gel dip coating. Mater Chem Phys 77:744–75010.1016/S0254-0584(02)00138-4 ↗
55. Monteiro RAR, Miranda SM, Rodrigues-Silva C, Faria JL, Silva AMT, Boaventura RAR, Vilar VJP (2015) Gas phase oxidation of n-decane and PCE by photocatalysis using an annular photoreactor packed with a monolithic catalytic bed coated with P25 and PC500. Appl Catal B 165:306–31510.1016/j.apcatb.2014.10.026 ↗
56. Someswararao MV, Dubey RS, Subbarao PSV, Singh S (2018) Electrospinning process parameters dependent investigation of TiO2 nanofibers. Results in Phys 11:223–23110.1016/j.rinp.2018.08.054 ↗
57. Wanjale S, Birajdar M, Jog J, Neppalli R, Causin V, Karger-Kocsis J, Lee J, Panzade P (2016) Surface tailored PS/TiO2 composite nanofiber membrane for copper removal from water. J Colloid Interface Sci 469:31–3710.1016/j.jcis.2016.01.054 ↗
58. Pasini SM, Valério A, Guelli Ulson de Souza SMA, Hotza D, Yin G, Wang J, Ulson de Souza AA (2019) Plasma-modified TiO2/polyetherimide nanocomposite fibers for photocatalytic degradation of organic compounds. J Environ Chem Eng 7:103213.10.1016/j.jece.2019.103213 ↗
59. Razzaz A, Ghorban S, Hosayni L, Irani M, Aliabadi M (2016) Chitosan nanofibers functionalized by TiO2 nanoparticles for the removal of heavy metal ions. J Taiwan Inst Chem Eng 58:333–34310.1016/j.jtice.2015.06.003 ↗
60. Suphankij S, Mekprasart W, Pecharapa W (2013) Photocatalytic of N-doped TiO2 nanofibers prepared by electrospinning. Energy Proc 34:751–75610.1016/j.egypro.2013.06.810 ↗
61. Mahltig B, Gutmann E, Meyer DC, Reibold M, Dresler B, Günther K, Faßler D, Böttcher H (2007) Solvothermal preparation of metallized titania sols for photocatalytic and antimicrobial coatings. J Mater Chem 17:2367–237410.1039/B702519J ↗
62. Nyangasi LO, Andala DM, Onindo CO, Ngila JC, Makhubela BCE, Ngigi EM (2017) Preparation and characterization of Pd modified TiO2 nanofiber catalyst for carbon-carbon coupling Heck reaction. J Nanomater 2017:829089210.1155/2017/8290892 ↗
63. Pan C-Y, Xu G-R, Xu K, Zhao H-L, Wu Y-Q, Su H-C, Xu J-M, Das R (2019) Electrospun nanofibrous membranes in membrane distillation: recent developments and future perspectives. Sep Purif Technol 221:44–6310.1016/j.seppur.2019.03.080 ↗
64. Luo Y, Jia Y, Zhang D, Cheng X (2016) Coaxial electrospinning method for the preparation of TiO2@CdS/PVA composite nanofiber Mat and investigation on its photodegradation catalysis. Photochem Photobiol 92:515–52210.1111/php.12591 ↗
65. Grothe T, Böttjer R, Wehlage D, Großerhode C, Storck J, Juhász Junger I, Mahltig B, Grethe T, Graßmann C, Schwarz-Pfeiffer A, Ehrmann A (2018) Photocatalytic Properties of TiO2 composite nanofibers electrospun with different polymers.10.1016/B978-0-08-102228-3.00014-1 ↗
66. Drew C, Liu X, Ziegler D, Wang X, Bruno FF, Whitten J, Samuelson LA, Kumar J (2003) Metal oxide-coated polymer nanofibers. Nano Lett 3:143–14710.1021/nl025850m ↗
67. Kudhier MA, Sabry RS, Al-Haidarie YK, Al-Marjani MF (2018) Significantly enhanced antibacterial activity of Ag-doped TiO2 nanofibers synthesized by electrospinning. Mater Technol 33:220–22610.1080/10667857.2017.1396778 ↗
68. Tang Q, Meng X, Wang Z, Zhou J, Tang H (2018) One-step electrospinning synthesis of TiO2/g-C3N4 nanofibers with enhanced photocatalytic properties. Appl Surf Sci 430:253–26210.1016/j.apsusc.2017.07.288 ↗
69. Zhu P, Nair AS, Shengjie P, Shengyuan Y, Ramakrishna S (2012) Facile fabrication of TiO2–graphene composite with enhanced photovoltaic and photocatalytic properties by electrospinning. ACS Appl Mater Interfaces 4:581–58510.1021/am201448p ↗
70. Zhu P, Nair AS, Yang S, Peng S, Ramakrishna S (2011) Which is a superior material for scattering layer in dye-sensitized solar cells—electrospun rice grain- or nanofiber-shaped TiO2? J Mater Chem 21:12210–1221210.1039/c1jm11939g ↗
71. Chuangchote S, Jitputti J, Sagawa T, Yoshikawa S (2009) Photocatalytic activity for hydrogen evolution of electrospun TiO2 nanofibers. ACS Appl Mater Interfaces 1:1140–114310.1021/am9001474 ↗
72. Adhikari SP, Awasthi GP, Kim HJ, Park CH, Kim CS (2016) Electrospinning directly synthesized porous TiO2 nanofibers modified by graphitic carbon nitride sheets for enhanced photocatalytic degradation activity under solar light irradiation. Langmuir 32:6163–617510.1021/acs.langmuir.6b01085 ↗
73. Nada AA, Nasr M, Viter R, Miele P, Roualdes S, Bechelany M (2017) Mesoporous ZnFe2O4@TiO2 nanofibers prepared by electrospinning coupled to PECVD as highly performing photocatalytic materials. J Phys Chem C 121:24669–2467710.1021/acs.jpcc.7b08567 ↗
74. Bedford NM, Steckl AJ (2010) Photocatalytic self cleaning textile fibers by coaxial electrospinning. ACS Appl Mater Interfaces 2:2448–245510.1021/am1005089 ↗
75. Haddad M, Alharbi H, Karim M, Aijaz O, Alharthi N (2018) Preparation of TiO2 incorporated polyacrylonitrile electrospun nanofibers for adsorption of heavy metal ions. J Polymer Res 25.10.1007/s10965-018-1613-4 ↗
76. Park J-Y, Hwang K-J, Lee J, Lee I-H (2011) Fabrication and characterization of electrospun Ag doped TiO2 nanofibers for photocatalytic reaction. J Mater Sci 46:7240–7246. https://doi.org/10.1007/s10853-011-5683-510.1007/s10853-011-5683-5 ↗
77. Yousef A, Barakat NAM, Amna T, Al-Deyab SS, Hassan MS, Abdel-hay A, Kim HY (2012) Inactivation of pathogenic Klebsiella pneumoniae by CuO/TiO2 nanofibers: A multifunctional nanomaterial via one-step electrospinning. Ceram Int 38:4525–453210.1016/j.ceramint.2012.02.029 ↗
78. He X, Yang CP, Zhang GL, Shi DW, Huang QA, Xiao HB, Liu Y, Xiong R (2016) Supercapacitor of TiO2 nanofibers by electrospinning and KOH treatment. Mater Des 106:74–8010.1016/j.matdes.2016.05.025 ↗
79. Cui L, Song Y, Wang F, Sheng Y, Zou H (2019) Electrospinning synthesis of SiO2-TiO2 hybrid nanofibers with large surface area and excellent photocatalytic activity. Appl Surf Sci 488:284–29210.1016/j.apsusc.2019.05.151 ↗
80. Kim J-H, Lee J-H, Kim J-Y, Kim S (2018) Synthesis of aligned TiO2 nanofibers using electrospinning. Appl Sci 8:30910.3390/app8020309 ↗
81. Roodbar Shojaei T, Hajalilou A, Tabatabaei M, Mobli H, Aghbashlo M (2019) Characterization and evaluation of nanofiber materials. In: Barhoum A, Bechelany M, Makhlouf ASH (eds) Handbook of nanofibers. Springer International Publishing, Cham, pp 491–522.10.1007/978-3-319-53655-2_15 ↗
82. Kuchi C, Harish GS, Reddy PS (2018) Effect of polymer concentration, needle diameter and annealing temperature on TiO2-PVP composite nanofibers synthesized by electrospinning technique. Ceram Int 44:5266–527210.1016/j.ceramint.2017.12.138 ↗
83. Chen H, Huang M, Liu Y, Meng L, Ma M (2020) Functionalized electrospun nanofiber membranes for water treatment: a review. Sci Total Environ 739:13994410.1016/j.scitotenv.2020.139944 ↗
84. Zhu N, Yan T, Qiao J, Cao H (2016) Adsorption of arsenic, phosphorus and chromium by bismuth impregnated biochar: Adsorption mechanism and depleted adsorbent utilization. Chemosphere 164:32–4010.1016/j.chemosphere.2016.08.036 ↗
85. Bora AJ, Gogoi S, Baruah G, Dutta RK (2016) Utilization of co-existing iron in arsenic removal from groundwater by oxidation-coagulation at optimized pH. J Environ Chem Eng 4:2683–269110.1016/j.jece.2016.05.012 ↗
86. Song P, Yang Z, Zeng G, Yang X, Xu H, Wang L, Xu R, Xiong W, Ahmad K (2017) Electrocoagulation treatment of arsenic in wastewaters: a comprehensive review. Chem Eng J 317:707–72510.1016/j.cej.2017.02.086 ↗
87. Ortega A, Oliva I, Contreras KE, González I, Cruz-Díaz MR, Rivero EP (2017) Arsenic removal from water by hybrid electro-regenerated anion exchange resin/electrodialysis process. Sep Purif Technol 184:319–32610.1016/j.seppur.2017.04.050 ↗
88. Li X, Chen Y, Hu X, Zhang Y, Hu L (2014) Desalination of dye solution utilizing PVA/PVDF hollow fiber composite membrane modified with TiO2 nanoparticles. J Membr Sci 471:118–12910.1016/j.memsci.2014.08.018 ↗
89. Lee C-G, Javed H, Zhang D, Kim J-H, Westerhoff P, Li Q, Alvarez PJJ (2018) Porous electrospun fibers embedding TiO2 for adsorption and photocatalytic degradation of water pollutants. Environ Sci Technol 52:4285–429310.1021/acs.est.7b06508 ↗
90. Haider S, Park S-Y (2009) Preparation of the electrospun chitosan nanofibers and their applications to the adsorption of Cu(II) and Pb(II) ions from an aqueous solution. J Membr Sci 328:90–9610.1016/j.memsci.2008.11.046 ↗
91. Abbasizadeh S, Keshtkar AR, Mousavian MA (2013) Preparation of a novel electrospun polyvinyl alcohol/titanium oxide nanofiber adsorbent modified with mercapto groups for uranium(VI) and thorium(IV) removal from aqueous solution. Chem Eng J 220:161–17110.1016/j.cej.2013.01.029 ↗
92. Huang M, Chen Y, Huang C-H, Sun P, Crittenden J (2015) Rejection and adsorption of trace pharmaceuticals by coating a forward osmosis membrane with TiO2. Chem Eng J 279:904–91110.1016/j.cej.2015.05.078 ↗
93. Peng S, Jin G, Li L, Li K, Srinivasan M, Ramakrishna S, Chen J (2016) Multi-functional electrospun nanofibres for advances in tissue regeneration, energy conversion & storage, and water treatment. Chem Soc Rev 45:1225–124110.1039/C5CS00777A ↗
94. Wu Q, Zhao J, Qin G, Wang C, Tong X, Xue S (2013) Photocatalytic reduction of Cr(VI) with TiO2 film under visible light. Appl Catal B 142:142–14810.1016/j.apcatb.2013.04.056 ↗
95. Cappelletti G, Bianchi CL, Ardizzone S (2008) Nano-titania assisted photoreduction of Cr(VI): the role of the different TiO2 polymorphs. Appl Catal B 78:193–20110.1016/j.apcatb.2007.09.022 ↗
96. Lee H, Choi W (2002) Photocatalytic oxidation of Arsenite in TiO2 suspension: kinetics and mechanisms. Environ Sci Technol 36:3872–387810.1021/es0158197 ↗
97. Minero C (1999) Kinetic analysis of photoinduced reactions at the water semiconductor interface. Catal Today 54:205–216.10.1016/S0920-5861(99)00183-2 ↗
98. Malato S, Maldonado MI, Fernández-Ibáñez P, Oller I, Polo I, Sánchez-Moreno R (2016) Decontamination and disinfection of water by solar photocatalysis: the pilot plants of the Plataforma Solar de Almeria. Mater Sci Semicond Process 42:15–2310.1016/j.mssp.2015.07.017 ↗
99. Cassano AE, Alfano OM (2000) Reaction engineering of suspended solid heterogeneous photocatalytic reactors. Catal Today 58:167–19710.1016/S0920-5861(00)00251-0 ↗
100. Singh HK, Muneer M, Bahnemann D (2003) Photocatalysed degradation of a herbicide derivative, bromacil, in aqueous suspensions of titanium dioxide. Photochem Photobiol Sci 2:151–15610.1039/b206918k ↗