Preparation of TiO2/graphene composite with appropriate N-doping ratio for humic acid removal
Source abstract
Abstract
Humic acid (HA), which contains abundant carboxyl groups and hydroxyl groups, is one of the major constituents of dissolved organic matter. The increase of HA in natural waters worldwide has caused great trouble in water treatment and water health. Photocatalysis is a promising technology for degrading HA. In this study, graphene oxide, TiO2 and different amounts of urea (nitrogen source) were mixed to dope nitrogen into TiO2 and RGO simultaneously and form N-TG to remove HA from aqueous solution. To confirm the effect of the N-doping and determine the best N-doping ratio for N-TG, various characterization and HA removal tests using different samples were conducted, we found the best N-doping ratio is ~1.46 at.%. The influences of the initial HA concentration, temperature and pH on HA removal performance were measured and discussed, notably, temperature range of 25–35 °C and neutral solution are more fitable for HA removal. HA removal is in the synergistic effect of adsorption and degradation. The presence of RGO almost doubles the adsorption ability of the composite, which does have a significant improvement on HA removal efficiency. Pretreated in darkness has an extra 2% improvement on HA removal efficiency.
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Research context
OpenAlex topics: TiO2 Photocatalysis and Solar Cells · Graphene and Nanomaterials Applications · Geochemistry and Elemental Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (41)
Show source-provided references
1. Delpla I, Jung AV, Baures E, Clement M, Thomas O (2009) Impacts of climate change on surface water quality in relation to drinking water production. Environ Int 35:1225–123310.1016/j.envint.2009.07.001 ↗
2. Wu X, Tan X, Yang S, Wen T, Guo H, Wang X, Xu A (2013) Coexistence of adsorption and coagulation processes of both arsenate and NOM from contaminated groundwater by nanocrystallined Mg/Al layered double hydroxides. Water Res 47:4159–416810.1016/j.watres.2012.11.056 ↗
3. Jiang Y, Goodwill JE, Tobiason JE, Reckhow DA (2016) Impacts of ferrate oxidation on natural organic matter and disinfection byproduct precursors. Water Res 96:114–12510.1016/j.watres.2016.03.052 ↗
4. Broo AE, Berghult B, Hedberg T (1998) Copper corrosion in water distribution systems—the influence of natural organic matter (NOM) on the solubility of copper corrosion products. Corros Sci 40:1479–148910.1016/S0010-938X(98)00059-6 ↗
5. Zhang J, Gong J, Zenga G, Ou X, Jiang Y, Chang Y, Guo M, Zhang C et al (2016) Simultaneous removal of humic acid/fulvic acid and lead from landfill leachate using magnetic graphene oxide. Appl Surf Sci 370:335–35010.1016/j.apsusc.2016.02.181 ↗
6. Xu H, Jiao R, Xiao F, Wang D (2014) Effects of different coagulants in treatment of TiO2-humic acid (HA) water and the aggregate characterization in different coagulation conditions. Colloid Surf A 446:213–22310.1016/j.colsurfa.2014.01.028 ↗
7. Dong C, Chen W, Liu C (2014) Preparation of novel magnetic chitosan nanoparticle and its application for removal of humic acid from aqueous solution. Appl Surf Sci 292:1067–107610.1016/j.apsusc.2013.12.125 ↗
8. Lin T, Lu Z, Chen W (2015) Interaction mechanisms of humic acid combined with calcium ions on membrane fouling at different conditions in an ultrafiltration system. Desalination 357:26–3510.1016/j.desal.2014.11.007 ↗
9. Thuyavan YL, Anantharaman N, Arthanareeswaran G, Ismail AF (2014) Adsorptive removal of humic acid by zirconia embedded in a poly(ether sulfone) membrane. Ind Eng Chem Res 53:11355–1136410.1021/ie5015712 ↗
10. Lim SM, Chiang K, Amal R, Fabris R, Chow C, Drikas M (2007) A study on the removal of humic acid using advanced oxidation processes. Sep Sci Technol 42:1391–140410.1080/01496390701289799 ↗
11. Lee PF, Sun DD, Leckie JO (2007) Adsorption and photodegradation of humic acids by nano-structured TiO2 for water treatment. J Adv Oxid Technol 10:72–78
12. Birben NC, Uyguner-Demirel CS, Sen Kavurmaci S, Gurkan YY, Turkten N, Cinar Z, Bekbolet M (2017) Application of Fe-doped TiO2 specimens for the solar photocatalytic degradation of humic acid. Catal Today 281:78–8410.1016/j.cattod.2016.06.020 ↗
13. Liu Y, Pei F, Lu R, Xu S, Cao S (2014) TiO2/N-graphene nanocomposite via a facile in situ hydrothermal sol–gel strategy for visible light photodegradation of eosin Y. Mater Res Bull 60:188–19410.1016/j.materresbull.2014.07.047 ↗
14. Zhang Y, Pan C (2011) TiO2/graphene composite from thermal reaction of graphene oxide and its photocatalytic activity in visible light. J Mater Sci 46:2622–2626. doi: 10.1007/s10853-010-5116-x10.1007/s10853-010-5116-x ↗
15. Chen X, Mao SS (2007) Titanium dioxide nanomaterials: synthesis, properties, modifications, and applications. Chem Rev 107:2891–295910.1021/cr0500535 ↗
16. Chen W, Ye T, Xu H, Chen T, Geng N, Gao X (2017) An ultrafiltration membrane with enhanced photocatalytic performance from grafted N-TiO2/graphene oxide. Rsc Adv 7:9880–988710.1039/C6RA27666K ↗
17. Johra FT, Jung W (2015) RGO–TiO2–ZnO composites: synthesis, characterization, and application to photocatalysis. Appl Catal A Gen 491:52–5710.1016/j.apcata.2014.11.036 ↗
18. Pelaez M, Nolan NT, Pillai SC, Seery MK, Falaras P, Kontos AG, Dunlop PSM, Hamilton JWJ et al (2012) A review on the visible light active titanium dioxide photocatalysts for environmental applications. Appl Catal B Environ 125:331–34910.1016/j.apcatb.2012.05.036 ↗
19. Wang R, Wu Q, Lu Y, Liu H, Xia Y, Liu J, Yang D, Huo Z et al (2014) Preparation of nitrogen-doped TiO2/graphene nanohybrids and application as counter electrode for dye-sensitized solar cells. Acs Appl Mater Inter 6:2118–212410.1021/am405231p ↗
20. Li Z, Zhang H, Liu Q, Sun L, Stanciu L, Xie J (2013) Fabrication of high-surface-area graphene/polyaniline nanocomposites and their application in supercapacitors. Acs Appl Mater Inter 5:2685–269110.1021/am4001634 ↗
21. Meyer JC, Geim AK, Katsnelson MI, Novoselov KS, Booth TJ, Roth S (2007) The structure of suspended graphene sheets. Nature 446:60–6310.1038/nature05545 ↗
22. Thuy-Duong N, Viet HP, Shin EW, Hai-Dinh P, Kim S, Chung JS, Kim EJ, Hur SH (2011) The role of graphene oxide content on the adsorption-enhanced photocatalysis of titanium dioxide/graphene oxide composites. Chem Eng J 170:226–23210.1016/j.cej.2011.03.060 ↗
23. Duru I, Ege D, Kamali AR (2016) Graphene oxides for removal of heavy and precious metals from wastewater. J Mater Sci 51:6097–6116. doi: 10.1007/s10853-016-9913-810.1007/s10853-016-9913-8 ↗
24. Xue Z, Zhao S, Zhao Z, Li P, Gao J (2016) Thermodynamics of dye adsorption on electrochemically exfoliated graphene. J Mater Sci 51:4928–4941. doi: 10.1007/s10853-016-9798-610.1007/s10853-016-9798-6 ↗
25. Jia Z, Li H, Zhao Y, Frazer L, Qian B, Borguet E, Ren F, Dikin DA (2017) Electrical and mechanical properties of poly(dopamine)-modified copper/reduced graphene oxide composites. J Mater Sci 52:11620–11629. doi: 10.1007/s10853-017-1307-z10.1007/s10853-017-1307-z ↗
26. Liu S, Sun H, Liu S, Wang S (2013) Graphene facilitated visible light photodegradation of methylene blue over titanium dioxide photocatalysts. Chem Eng J 214:298–30310.1016/j.cej.2012.10.058 ↗
27. Pan X, Yang M, Tang Z, Xu Y (2014) Noncovalently functionalized graphene-directed synthesis of ultralarge graphene-based TiO2 nanosheet composites: tunable morphology and photocatalytic applications. J Phys Chem C 118:27325–2733510.1021/jp507173a ↗
28. Qian W, Greaney PA, Fowler S, Chiu S, Goforth AM, Jiao J (2014) Low-temperature nitrogen doping in ammonia solution for production of N-doped TiO2-hybridized graphene as a highly efficient photocatalyst for water treatment. Acs Sustain Chem Eng 2:1802–181010.1021/sc5001176 ↗
29. Li J, Chen LX, Li X, Zhang CC, Zeng FL (2015) Hollow organosilica nanospheres prepared through surface hydrophobic layer protected selective etching. Appl Surf Sci 340:126–13110.1016/j.apsusc.2015.02.168 ↗
30. Barrejon M, Primo A, Gomez-Escalonilla MJ, Fierro JLG, Garcia H, Langa F (2015) Covalent functionalization of N-doped graphene by N-alkylation. Chem Commun 51:16916–1691910.1039/C5CC06285C ↗
31. Lherbier A, Botello-Mendez AR, Charlier J (2013) Electronic and transport properties of unbalanced sublattice N-doping in graphene. Nano Lett 13:1446–145010.1021/nl304351z ↗
32. Meng F, Li J, Cushing SK, Zhi M, Wu N (2013) Solar hydrogen generation by nanoscale p–n junction of p-type molybdenum disulfide/n-type nitrogen-doped reduced graphene oxide. J Am Chem Soc 135:10286–1028910.1021/ja404851s ↗
33. Liu C, Zhang L, Liu R, Gao Z, Yang X, Tu Z, Yang F, Ye Z et al (2016) Hydrothermal synthesis of N-doped TiO2 nanowires and N-doped graphene heterostructures with enhanced photocatalytic properties. J Alloy Compd 656:24–3210.1016/j.jallcom.2015.09.211 ↗
34. Dawlaty JM, Shivaraman S, Strait J, George P, Chandrashekhar M, Rana F, Spencer MG, Veksler D et al (2008) Measurement of the optical absorption spectra of epitaxial graphene from terahertz to visible. Appl Phys Lett 93:193–19710.1063/1.2990753 ↗
35. Zhang H, Gu W, Li M, Fang W, Li Z, Tao W (2015) Influence of environmental factors on the adsorption capacity and thermal conductivity of silica nano-porous materials. J Nanosci Nanotechnol 15:3048–305410.1166/jnn.2015.9663 ↗
36. Pierrard JC, Rimbault J, Aplincourt M (2002) Experimental study and modelling of lead solubility as a function of pH in mixtures of ground waters and cement waters. Water Res 36:879–89010.1016/S0043-1354(01)00307-4 ↗
37. Kosmulski M (2002) The significance of the difference in the point of zero charge between rutile and anatase. Adv Colloid Interface 99:255–26410.1016/S0001-8686(02)00080-5 ↗
38. Kipton H, Powell J, Town RM (1992) Solubility and fractionation of humic acid: effect of pH and ionic medium. Anal Chim Acta 267:47–5410.1016/0003-2670(92)85005-Q ↗
39. Yuan R, Zhou B (2016) Effect of ion (Al, Fe and Zn) co-doped TiO2 nanotubes on photocatalytic degradation of humic acids under UV/ozonation for drinking water purification. Water Sci Tech W Sup 16:237–24410.2166/ws.2015.130 ↗
40. Hidaka H, Honjo H, Horikoshi S, Serpone N (2003) Photocatalyzed degradations on a TiO2-coated quartz crystal microbalance. I. Adsorption/desorption processes in the degradation of phenol and catechol. New J Chem 27:1371–137610.1039/b301211p ↗
41. Zhou Q, Zhong Y, Chen X, Liu J, Huang X, Wu Y (2014) Adsorption and photocatalysis removal of fulvic acid by TiO2-graphene composites. J Mater Sci 49:1066–1075. doi: 10.1007/s10853-013-7784-910.1007/s10853-013-7784-9 ↗