Novel broad spectrum light responsive PPy/hexagonal-SnS2 photocatalyst for efficient photoreduction of Cr(VI)
Source abstract
Abstract
Abstract Broad spectrum light response and high photo-carrier separation efficiency are two key postulates for promising photocatalysts. In this perspective, polypyrrole (PPy) modified hexagonal SnS2 nanosheet composites were firstly designed via in-situ polymerization method and used for Cr(VI) reduction with broad spectrum light (UV–vis-NIR) driven. Results indicated that 15-PPy/SnS2 composite material not only has good photocatalytic performance in the visible region (λ > 420 nm), but also has a great improvement in the visible (λ > 550 nm) and near-infrared (λ > 760 nm). With the analysis of EIS, PL and transient photocurrent responses, PPy can observably accelerate the separation of electrons-holes pair in the photocatalytic reaction. Trapping experiments indicated that e− and O2− all played master roles in the photoreduction process. Based on the trapping experiments and the Mott-Schottky analysis, a possible mechanism is proposed. This work will provide a thinking to construct other SnS2-based photocatalysts for efficient Cr(VI) reduction with full spectrum light utilization.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Gas Sensing Nanomaterials and Sensors · Advanced Nanomaterials in Catalysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (74)
Show source-provided references
1. Enhanced Cr(VI) photoreduction in aqueous solution using Nb2O5/CuO heterostructures under UV and visible irradiation10.1016/j.cej.2016.11.135 ↗
2. The enhanced photoreduction of Cr(VI) to Cr(III) using carbon dots coupled TiO2 mesocrystals10.1016/j.apcatb.2017.12.053 ↗
3. Template-oriented synthesis of monodispersed SnS2@SnO2 hetero-nanoflowers for Cr(VI) photoreduction10.1016/j.apcatb.2016.03.035 ↗
4. High rates of Cr(VI) photoreduction with magnetically recoverable nano-Fe3O4@Fe2O3/Al2O3 catalyst under visible light10.1016/j.cej.2016.09.044 ↗
5. Zn/ZnO dendrites arising the heat-treatment of Zn dendrites and their photocatalytic reduction of Cr(VI)10.1016/j.materresbull.2018.03.023 ↗
6. Efficient construction of bismuth vanadate-based Z-scheme photocatalyst for simultaneous Cr(VI) reduction and ciprofloxacin oxidation under visible light: kinetics, degradation pathways and mechanism10.1016/j.cej.2018.04.170 ↗
7. Efficient removal of Cr(III)-organic complexes from water using UV/Fe(III) system: negligible Cr(VI) accumulation and mechanism10.1016/j.watres.2017.09.021 ↗
8. Spontaneous reduction of Cr(VI) using InSnS2 under dark condition10.1016/j.cej.2017.03.108 ↗
9. Enhanced photocatalytic treatment of Cr(VI) and phenol by monoclinic BiVO4 with {010}-orientation growth10.1016/j.materresbull.2018.07.033 ↗
10. Preparation of ZnIn2S4 nanosheet -coated CdS nanorod heterostructures for efficient photocatalytic reduction of Cr(VI)10.1016/j.apcatb.2018.03.017 ↗
11. Preconcentration of Pb(II), Cr(III), Cu(II), Ni(II) and Cd(II) ions in environmental samples by membrane filtration prior to their flame atomic absorption spectrometric determinations10.1016/j.jhazmat.2006.11.040 ↗
12. Redox conversion of chromium(VI) and arsenic(III) with the intermediates of chromium(V) and arsenic(IV) via Au Pd/CNTs electrocatalysis in acid aqueous solution10.1021/acs.est.5b01759 ↗
13. Efficient removal of chromium from water by Mn3O4@ZnO/Mn3O4 composite under simulated sunlight irradiation: synergy of photocatalytic reduction and adsorption10.1016/j.apcatb.2017.05.041 ↗
14. Acrylate-based polymerizable sol-gel synthesis of magnetically recoverable TiO2 supported Fe3O4 for Cr(VI) photoreduction in aerobic atmosphere10.1021/acssuschemeng.5b01055 ↗
15. Carbon dots-TiO2nanosheets composites for photoreduction of Cr(VI) under sunlight illumination: Favorable role of carbon dots10.1016/j.apcatb.2017.10.023 ↗
16. Synergistic photocatalysis of Cr(VI) reduction and 4-Chlorophenol degradation over hydroxylated -Fe2O3 under visible light irradiation10.1016/j.jhazmat.2016.02.055 ↗
17. J.C. Hu Construction of CdS/CoOx core-shell nanorods for efficient photocatalytic H2 evolution10.1016/j.apcatb.2018.04.037 ↗
18. Construction of urchin-like ZnIn2S4-Au-TiO2 heterostructure with enhanced activity for photocatalytic hydrogen evolution10.1016/j.apcatb.2018.04.038 ↗
19. Recyclable nanocomposite of flowerlike MoS2@Hybrid acid-doped PANI immobilized on porous PAN nanofibers for the efficient removal of Cr(VI)10.1021/acssuschemeng.7b02738 ↗
20. Template-oriented synthesis of monodispersed SnS2@SnO2 hetero-nanoflowers for Cr(VI) photoreduction10.1016/j.apcatb.2016.03.035 ↗
21. Controllable growth of MoS2 nanosheets on novel Cu2S snowflakes with high photocatalytic activity10.1016/j.apcatb.2018.03.074 ↗
22. Spatially controlled doping of two-dimensional SnS2 through intercalation for electronics10.1038/s41565-018-0069-3 ↗
23. Fabrication of g-C3N4/SnS2/SnO2 nanocomposites for promoting photocatalytic reduction of aqueous Cr(VI) under visible light10.1016/j.cej.2017.10.173 ↗
24. Optical properties of nanocrystalline SnS2 thin films10.1016/j.materresbull.2006.06.028 ↗
25. Fabrication of ternary reduced graphene oxide/SnS2/ZnFe2O4 composite for high visible-light photocatalytic activity and stability10.1016/j.jhazmat.2017.01.058 ↗
26. Carbon-doped SnS2 nanostructure as a high- efficiency solar fuel catalyst under visible light10.1038/s41467-017-02547-4 ↗
27. Silver-loaded ZnO/ZnFe2O4 mesoporous hollow spheres with enhanced photocatalytic activity for 2,4-dichlorophenol degradation under visible light irradiation10.1016/j.materresbull.2018.07.014 ↗
28. Three-dimensional MoO3 nanoflowers assembled with nanosheets for rhodamine B degradation under visible light10.1016/j.materresbull.2018.08.036 ↗
29. Bi2O2(OH)NO3/AgI heterojunction with enhanced UV and visible-light responsive photocatalytic activity and mechanism investigation10.1016/j.materresbull.2018.08.039 ↗
30. Recyclable magnetic Fe3O4@SiO2/β-NaYF4:Yb3+, Tm3+/TiO2 composites with NIR enhanced photocatalytic activity10.1016/j.materresbull.2018.07.016 ↗
31. The effect of tin sulfide quantum Dots size on photocatalytic and photovoltaic performance10.1016/j.matchemphys.2017.04.008 ↗
32. A direct Z-scheme g-C3N4/SnS2 photocatalyst with superior visible-light CO2 reduction performance10.1016/j.jcat.2017.06.006 ↗
33. Gram-Scale synthesis of aligned C3N4-polypyrrole heterojuction aerogel with tunable band structures as an efficient vsible and near infrared light -driven metal-free photocatalyst10.1039/C7TA08389K ↗
34. Zhang, CoP3@PPy microcubes as anode for lithium-ion batteries with improved cycling and rate performance10.1016/j.cej.2018.04.138 ↗
35. Triaxial nanocables of conducting Polypyrrole@SnS2@Carbon nanofiber enabling significantly enhanced Li-Ion storage10.1021/acsami.8b02111 ↗
36. Remarkable acid stability of Polypyrrole-MoS4: a highly selective and effcient scavenger of heavy metals over a wide pH range
37. Dramatic enhancement of organics degradation and electricity generation via strengthening superoxide radical by using a novel 3D AQS/PPy-GF cathode10.1016/j.watres.2017.08.054 ↗
38. In‐situ polymerization for PPy/g‐C3N4 composites with enhanced visible light photocatalytic performance10.1016/S1872-2067(17)62997-8 ↗
39. Polypyrrole decorated BiOI nanosheets: efficient photocatalytic activity for treating diverse contaminants and the critical role of bifunctional polypyrrole10.1016/j.jcis.2017.06.054 ↗
40. Probing conducting polymers@cadmium sulfide core-shell nanorods for highly improved photocatalytic hydrogen production10.1016/j.jcis.2018.02.072 ↗
41. Carbon dots-TiO2 nanosheets composites for photoreduction of Cr(VI) under sunlight illumination: favorable role of carbon dots10.1016/j.apcatb.2017.10.023 ↗
42. Ag2S quantum dots in situ coupled to hexagonal SnS2 with enhanced photocatalytic activity for MO and Cr(VI) removal10.1039/C7RA08369F ↗
43. Different morphologies of SnS2 supported on 2D g-C3N4 for excellent and stable visible light photocatalytic hydrogen generation10.1021/acssuschemeng.7b04792 ↗
44. Microwave absorbing property and preparation of CoNi@SiO2@PPy composite in X-band
45. Efficient removal of organic pollutants from aqueous media using newly synthesized polypyrrole/CNTs-CoFe2O4 magnetic nanocomposites10.1016/j.cej.2017.02.037 ↗
46. Preparation and electrochemical performances of graphene/polypyrrole nanocomposite with anthraquinone-graphene oxide as active oxidant10.1016/j.carbon.2017.04.030 ↗
47. The enhanced photoreduction of Cr(VI) to Cr(III) using carbon dots coupled TiO2 mesocrystals10.1016/j.apcatb.2017.12.053 ↗
48. Polypyrrole decorated BiOI nanosheets: efficient photocatalytic activity for treating diverse contaminants and the critical role of bifunctional polypyrrole10.1016/j.jcis.2017.06.054 ↗
49. Efficient removal of organic pollutants from aqueous media using newly synthesized polypyrrole/CNTs-CoFe2O4 magnetic nanocomposites10.1016/j.cej.2017.02.037 ↗
50. Proposed mechanisms for the removal of nitrate from water by platinum catalysts supported on polyaniline and polypyrrole10.1016/j.apcatb.2017.11.064 ↗
51. L-cysteine doped polypyrrole (PPy@L-Cyst): A super adsorbent for the rapid removal of Hg+2and efficient catalytic activity of the spent adsorbent for reuse10.1016/j.cej.2018.01.093 ↗
52. Preparation of porous PPy-TiO2 composites: improved visible light photoactivity and the mechanism10.1016/j.cej.2013.10.057 ↗
53. Three-dimensional elastic ultrathin reduced graphene oxide coating SnS2 hierarchical microsphere as lithium ion batteries anode materials10.1016/j.jallcom.2017.12.210 ↗
54. Hierarchical assembly of ultrathin hexagonal SnS2 nanosheets onto electrospun TiO2 nanofibers: enhanced photocatalytic activity based on photoinduced interfacial charge transfer10.1039/C2NR32301J ↗
55. Partially oxidized SnS2 atomic layers achieving efficient visible light-driven CO2 reduction10.1021/jacs.7b10287 ↗
56. Rational design of Z-scheme LaFeO3/SnS2 hybrid with boosted visible light photocatalytic activity towards tetracycline degradation10.1016/j.seppur.2018.08.028 ↗
57. Radioactive iodine capture and storage from water using magnetite nanoparticles encapsulated in polypyrrole10.1016/j.jhazmat.2017.10.065 ↗
58. Flexible overoxidized polypyrrole films with orderly structure as high-performance anodes for Li- and Na-Ion batteries10.1021/acsami.6b08901 ↗
59. Development of a new efficient visible-light-driven photocatalyst from SnS2 and polyvinyl chloride10.1016/j.jcat.2016.10.022 ↗
60. Scalable low temperature in air solid phase synthesis of porous flower-like hierarchical nanostructure SnS2 with superior performance in the adsorption and photocatalytic reduction of aqueous Cr(VI)10.1016/j.seppur.2017.08.014 ↗
61. Ultrathin SnS2 nanosheets with exposed {001} facets and enhanced photocatalytic properties10.1016/j.actamat.2013.11.076 ↗
62. Well-controlled SrTiO3@Mo2C core-shell nanofiber photocatalyst: boosted photo-generated charge carriers transportation and enhanced catalytic performance for water reduction10.1016/j.nanoen.2018.03.014 ↗
63. MIL-125-NH2@TiO2 core-shell particles produced by a post solvothermal route for high-performance photocatalytic H210.1021/acsami.8b01462 ↗
64. J.T. Zhang. Y.D Li, Metal@semiconductor core-shell nanocrystals with atomically organized interfaces for efficient hot electron-mediated photocatalysis10.1016/j.nanoen.2018.02.040 ↗
65. Sulfate radical-mediated degradation and mineralization of bisphenol F in neutral medium by the novel magnetic Sr2CoFeO6 double perovskite oxide catalyzed peroxymonosulfate: influence of co-existing chemicals and UV irradiation10.1016/j.apcatb.2018.03.088 ↗
66. Electron acceptors effect on photocatalytic degradation of metformin under sunlight irradiation10.1016/j.solener.2018.02.065 ↗
67. Electron spin resonance studies on the oxidation mechanism of sterically hindered cyclic amines in TiO2 photocatalytic systems10.1021/jp061765h ↗
68. Exceptional synergistic enhancement of the photocatalytic activity of SnS2 by coupling with polyaniline and N-doped reduced graphene oxide10.1016/j.apcatb.2018.05.002 ↗
69. Last advances on TiO2-photocatalytic removal of chromium, uranium and arsenic10.1016/j.cogsc.2017.04.002 ↗
70. Novel fluorinated Bi2MoO6 nanocrystals for efficient photocatalytic removal of water organic pollutants under different light source illumination10.1016/j.apcatb.2017.02.057 ↗
71. Understanding of electrochemical and structural changes of polypyrrole/polyethylene glycol composite films in aqueous solution10.1016/j.electacta.2011.08.061 ↗
72. Metal-organic framework as nanoreactors to co-incorporate carbon nanodots and CdS quantum dots into the pores for improved H2 evolution without noble-metal cocatalyst10.1016/j.apcatb.2018.11.018 ↗
73. In-situ construction of 2D direct Z-scheme g-C3N4/g-C3N4 homojunction with high photocatalytic activity10.1007/s10853-018-2762-x ↗
74. An accurate cost effective DFT approach to study sensor behaviour of polypyrrole for nitrate ion in gas and aqueous phase10.1039/C6CP02271E ↗