Z型BiVO4/GO/g-C3N4复合材料的制备及其可见光下催化性能

doi:10.15541/jim20190380

摘要/Abstract

摘要：

Z-型光催化剂可以有效增强电荷分离, 从而改善光催化剂的活性。采用浸渍-煅烧和水热法两步制备Z型BiVO₄/GO/g-C₃N₄光催化剂, 并用不同手段对其进行表征。在BiVO₄/GO/g-C₃N₄的光催化过程中, GO纳米片作为BiVO₄和g-C₃N₄之间的快速传输通道, 可以抑制电子-空穴复合, 显著促进电荷分离, 提高三元异质结的氧化还原能力。与单组分或二元复合物相比, 该催化剂具有良好的光降解罗丹明B(RhB)的能力。在可见光照射下, 它能够在120 min内降解85% RhB, 空穴(h⁺)在反应中起主要作用。该工作为三元光催化剂体系提供了简单的制备方法, 其中g-C₃N₄通过GO与BiVO₄偶联, 光催化活性显著提高。

关键词: BiVO₄, g-C₃N₄, GO, 三元催化剂, Z型异质结

Abstract:

Fabricating Z-scheme photocatalysts is a promising method for improving photocatalytic activity by effectively enhancing charge separation. A new Z-scheme BiVO₄/GO/g-C₃N₄ photocatalyst was prepared by two steps of impregnation-calcination and hydrothermal method, and then characterized by different methods. In the photocatalytic process of BiVO₄/GO/g-C₃N₄, GO nanosheet act as fast transmission channels between BiVO₄ and g-C₃N₄ and can suppress electron-hole recombination, which significantly promotes the charge separation and improves the redox ability of the ternary heterojunction. The ternary photocatalyst has good photocatalytic degradation of Rhodamine B (RhB) as compared to the single-component or binary composite. It is capable of degrading 85% of RhB in 120 min under visible light irradiation and the hole (h⁺) plays a major role in the reaction. This work provides a simple preparation method for a ternary photocatalyst system in which g-C₃N₄ coupled with BiVO₄ by GO to significantly improve photocatalytic activity.

Key words: BiVO₄, g-C₃N₄, GO, ternary photocatalyst, Z-scheme heterojunction

中图分类号:

TB34

许世超,朱天哲,乔阳,白学健,唐楠,郑春明. Z型BiVO₄/GO/g-C₃N₄复合材料的制备及其可见光下催化性能[J]. 无机材料学报, 2020, 35(7): 839-846.

XU Shichao,ZHU Tianzhe,QIAO Yang,BAI Xuejian,TANG Nan,ZHENG Chunming. Fabrication of Z-scheme BiVO₄/GO/g-C₃N₄ Photocatalyst with Efficient Visble-light Photocatalytic Performance[J]. Journal of Inorganic Materials, 2020, 35(7): 839-846.

图/表 7

Fig. 1 XRD patterns of BiVO4, g-C3N4/GO, B2GC8, and BiVO4/ GO/g-C3N4 (a), and FT-IR spectra of the as-prepared GO, GO/ g-C3N4, BiVO4, BiVO4/GO/g-C3N4 (b)

Fig. 2 XPS survey scans of BiVO4, GO/g-C3N4 and BiVO4/ GO/g-C3N4(a), and high-resolution spectra of N1s (b), C1s (c), Bi1s (d) in BiVO4, GO/g-C3N4 and BiVO4/GO/g-C3N4, respectively

Fig. 3 TEM images of the as-prepared GO/g-C3N4 (a) and BiVO4/GO/g-C3N4(b), and SEM images of BiVO4 (c) and BiVO4/GO/g-C3N4 (d)

Fig. 4 UV-Vis adsorption spectra of prepared samples (a) and calculated band gap of BiVO4 and g-C3N4 (b)

Fig. 5 Photocatalytic degradation of RhB (a) and dynamics of RhB photodegradation reaction (ln(C0/C) (b)

Fig. 6 Transient photocurrent responses (a), photoluminescence (PL) spectra (b), and EIS Nyquist plots (dot) (c) of g-C3N4, BiVO4, GO/g-C3N4 and BiVO4/GO/g-C3N4

Fig. 7 Possible photocatalytic enhanced mechanism over BiVO4/GO/g-C3N4 Z-scheme photocatalysts under visible light irradiation

参考文献 25

[1]	TEH C M, MOHAMED A R. Roles of titanium dioxide and ion-doped titanium dioxide on photocatalytic degradation of organic pollutants (phenolic compounds and dyes) in aqueous solutions: a review. Journal of Alloys and Compound, 2011,509(5):1648-1660. DOI URL
[2]	RAMYA R, KRISHNAN P S, KRISHNAN M NEELAVENI, et al. Enhanced visible light activity of Pr-TiO₂ nanocatalyst in the degradation of dyes: effect of Pr doping and TiO₂ morphology. J. Nanosci. Nanotechnol., 2019,19(7):3971-3981. DOI URL PMID
[3]	RIAZ U, ASHRAF S M, KASHYAP J. Role of conducting polymers in enhancing TiO₂-based photocatalytic dye degradation: a short review. Polymer-Plastics Technology and Engineering, 2015,54(17):1850-1870. DOI URL
[4]	HUNGE Y M, YADAV A A, MAHADIK M A, et al. Degradation of organic dyes using spray deposited nanocrystalline stratified WO₃/TiO₂ photoelectrodes under sunlight illumination. Optical Materials, 2018,76:260-270. DOI URL
[5]	PIRHASHEMI M, HABIBI-YANGJEH A, RAHIM POURAN S. Review on the criteria anticipated for the fabrication of highly efficient ZnO-based visible-light-driven photocatalysts. Journal of Industrial and Engineering Chemistry, 2018,62:1-25. DOI URL
[6]	MASSEY A T, GUSAIN R, KUMARI S, et al. Hierarchical microspheres of MoS₂ nanosheets: efficient and regenerative adsorbent for removal of water-soluble dyes. Industrial & Engineering Chemistry Research, 2016,55(26):7124-7131.
[7]	HE H, ZHOU Y, KE G, et al. Improved surface charge transfer in MoO₃/BiVO₄ heterojunction film for photoelectrochemical water oxidation. Electrochimica Acta, 2017,257:181-191. DOI URL
[8]	ZHAO Z, ZHANG W, SHEN X, et al. Preparation of g-C₃N₄/TiO₂/ BiVO₄ composite and its application in photocatalytic degradation of pollutant from TATB production under visible light irradiation. Journal of Photochemistry and Photobiology A: Chemistry, 2018 358:246-255. DOI URL
[9]	WANG K, ZHANG G, LI J, et al. 0D/2D Z-scheme heterojunctions of bismuth tantalate quantum dots/ultrathin g-C₃N₄ nanosheets for highly efficient visible light photocatalytic degradation of antibiotics. ACS Appl. Mater. Interfaces, 2017,9(50):43704-43715. DOI URL PMID
[10]	FENG J, GAO M, ZHANG Z, et al. Comparing the photocatalytic properties of g-C₃N₄ treated by thermal decomposition, solvothermal and protonation. Results in Physics, 2018,11:331-334. DOI URL
[11]	YAN J, SONG Z, WANG X, et al. Enhanced photocatalytic activity of ternary Ag₃PO₄/GO/g-C₃N₄ photocatalysts for Rhodamine B degradation under visible light radiation. Applied Surface Science, 2019,466:70-77. DOI URL
[12]	TAN Y, SHU Z, ZHOU J, et al. One-step synthesis of nanostructured g-C₃N₄/TiO₂ composite for highly enhanced visible-light photocatalytic H₂ evolution. Applied Catalysis B: Environmental, 2018,230:260-268. DOI URL
[13]	XIE Z, FENG Y, WANG F, et al. Construction of carbon dots modified MoO₃/g-C₃N₄ Z-scheme photocatalyst with enhanced visible-light photocatalytic activity for the degradation of tetracycline. Applied Catalysis B: Environmental, 2018,229:96-104. DOI URL
[14]	NIE N, ZHANG L, FU J, et al. Self-assembled hierarchical direct Z-scheme g-C₃N₄/ZnO microspheres with enhanced photocatalytic CO₂ reduction performance. Applied Surface Science, 2018,441:12-22. DOI URL
[15]	LI Y, WU X, HO W, et al. Graphene-induced formation of visible-light-responsive SnO₂-Zn₂SnO₄ Z-scheme photocatalyst with surface vacancy for the enhanced photoreactivity towards NO and acetone oxidation. Chemical Engineering Journal, 2018,336:200-210. DOI URL
[16]	DENG Y C, TANG L, ZENG G M, et al. Facile fabrication of mediator-free Z-scheme photocatalyst of phosphorous-doped ultrathin graphitic carbon nitride nanosheets and bismuth vanadate composites with enhanced tetracycline degradation under visible light. Journal of Colloid and Interface Science, 2018,509:219-234. DOI URL PMID
[17]	WU Q, BAO S, TIAN B, et al. Double-diffusion-based synthesis of BiVO₄ mesoporous single crystals with enhanced photocatalytic activity for oxygen evolution. Chem. Commun.(Camb), 2016,52(47):7478-7481.
[18]	WU X, ZHAO J, WANG L, et al. Carbon dots as solid-state electron mediator for BiVO₄/CDs/CdS Z-scheme photocatalyst working under visible light. Applied Catalysis B: Environmental, 2017,206:501-509. DOI URL
[19]	LIU Q, GUO Y, CHEN Z, et al. Constructing a novel ternary Fe(III)/graphene/g-C₃N₄ composite photocatalyst with enhanced visible-light driven photocatalytic activity via interfacial charge transfer effect. Applied Catalysis B: Environmental, 2016,183:231-241. DOI URL
[20]	XIANG Q, YU J, JARONIEC M. Preparation and enhanced visible-light photocatalytic H₂-production activity of graphene/C₃N₄ composites. The Journal of Physical Chemistry C, 2011,115(15):7355-7363. DOI URL
[21]	XUE B, JIANG H Y, SUN T, et al. ZnS@g-C₃N₄ composite photocatalysts: in situ synthesis and enhanced visible-light photocatalytic activity. Catalysis Letters, 2016,146(10):2185-2192. DOI URL
[22]	HUANG Y, ZHANG X, ZHU G, et al. Synthesis of silver phosphate/sillenite bismuth ferrite/graphene oxide nanocomposite and its enhanced visible light photocatalytic mechanism. Separation and Purification Technology, 2019,215:490-499. DOI URL
[23]	ZHANG R, HUANG Z, LI C, et al. Monolithic g-C₃N₄/reduced graphene oxide aerogel with in situ embedding of Pd nanoparticles for hydrogenation of CO₂ to CH₄. Applied Surface Science, 2019,475:953-960. DOI URL
[24]	DOWLA B M R U, CHO J Y, JANG W K, et al. Synthesis of BiVO₄-GO-PTFE nanocomposite photocatalysts for high efficient visible-light-induced photocatalytic performance for dyes. Journal of Materials Science: Materials in Electronics, 2017,28(20):15106-15117. DOI URL
[25]	LIN H, YE H, CHEN S, et al. One-pot hydrothermal synthesis of BiPO₄/BiVO₄ with enhanced visible-light photocatalytic activities for methylene blue degradation. RSC Advances, 2014,4(21):10968. DOI URL

Z型BiVO₄/GO/g-C₃N₄复合材料的制备及其可见光下催化性能

Fabrication of Z-scheme BiVO₄/GO/g-C₃N₄ Photocatalyst with Efficient Visble-light Photocatalytic Performance

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