石墨相氮化碳复合及氢化改性提升BiVO4光催化性能的研究

蒋力栋, 陈达*, 秦来顺, 梁俊辉

化工新型材料 ›› 2020, Vol. 48 ›› Issue (7) : 210 -214.

PDF (4753KB)
化工新型材料 ›› 2020, Vol. 48 ›› Issue (7) : 210-214. DOI: 10.19817/j.cnki.issn 1006-3536.2020.07.048
科学研究

石墨相氮化碳复合及氢化改性提升BiVO4光催化性能的研究

    蒋力栋, 陈达*, 秦来顺, 梁俊辉
作者信息 +

Photocatalytic activity of BiVO4 enhanced by g-C3N4 coupling and hydrogenation treatment

  • Jiang Lidong, Chen Da, Qin Laishun, Liang Junhui
Author information +
文章历史 +
PDF (4866K)

摘要

通过水热法简单合成了可见光响应光催化剂BiVO4,再采用一步煅烧法制备了BiVO4/g-C3N4,最后在20MPa纯氢气气氛下以200℃处理4h获得氢化BiVO4样品(H-BiVO4/g-C3N4),通过X射线衍射、透射电镜等手段证实成功合成BiVO4/g-C3N4复合光催化剂,并在氢化样品表面发现无序层;固体漫反射光谱说明改性后的样品对可见光吸收增强;可见光下光催化降解亚甲基蓝,发现改性后的样品降解效率提升;通过光电化学测试,明确g-C3N4复合与氢化改性提升BiVO4光催化活性的原因主要是光生载流子分离传输效率的提升。

Abstract

The visible light-responsive BiVO4 photocatalyst was synthesized through a simple hydrothermal process,and BiVO4/g-C3N4 was then prepared by one-step calcination method.The hydrogenated BiVO4/g-C3N4 (H-BiVO4/g-C3N4) sample was finally obtained by treating BiVO4/g-C3N4 powder at 200℃ for 4h in a 20MPa hydrogen atmosphere.The successful synthesis of BiVO4/g-C3N4 composite photocatalysts were determined by XRD,FESEM and TEM measurements,and the disordered layer on the surface of the hydrogenated sample was observed.The DRS result showed that the visible light absorption of the modified sample was enhanced.The photocatalytic results showed that the degradation efficiency of the modified sample exhibited significantly improved to methylene blue under visible light in comparison with the pristine BiVO4 sample.The photoelectrochemical test confirmed that the improved photocatalytic activity of the H-BiVO4/g-C3N4 sample could be ascribed to the increased separation and transfer efficiencies of photogenerated carriers induced by the coupling of g-C3N4 and hydrogenation treatment.

关键词

钒酸铋 / 石墨相氮化碳 / 氢化处理 / 光催化剂 / 降解亚甲基蓝

Key words

BiVO4 / g-C3N4 / hydrogenation treatment / photocatalyst / degradation of methylene blue

引用本文

引用格式 ▾
石墨相氮化碳复合及氢化改性提升BiVO4光催化性能的研究[J]. 化工新型材料, 2020, 48(7): 210-214 DOI:10.19817/j.cnki.issn 1006-3536.2020.07.048

登录浏览全文

4963

注册一个新账户 忘记密码

参考文献

[1] 黄耿华.印染需加快自身转型升级[J].中国纺织,2012(3):14-15.
[2] 林青雯,赵琪,高梦凡,等.Fe3O4/纤维素纳米复合材料的制备及其对亚甲基蓝的吸附[J].环境工程学报,2016,10(11):6451-6456.
[3] 梁波,关杰.吸附法处理亚甲基蓝研究[J].工业用水与废水,2015,45(1):6-11.
[4] 王九思,韩相恩,赵红花.絮凝沉淀—Fenton氧化法处理印染废水[J].兰州交通大学学报,2001,20(6):68-71.
[5] 潘洁,沈聪,李琴,等.微波协同铁屑内电解处理亚甲基蓝染料废水[J].应用化工,2006,35(9):656-658.
[6] Habisreutinger S N,Schmidt-Mende L,Stolarczyk J K.Photocatalytic reduction of CO2 on TiO2 and other[J].Angewandte Chemie-International Edition,2013,52(39):7372-7408.
[7] Zong X,Yan H J,Wu G P,et al.Enhancement of photocatalytic H2 evolution on CdS by loading MoS2 as cocatalyst under visible light irradiation[J].Journal of the American Chemical Society,2008,1330(23):7176-7178.
[8] Ran J R,Zhang J,Yu J G,et al.Earth-abundant cocatalysts for semiconductor-based photocatalytic water splitting[J].Chemical Society Reciews,2014,43(22):7787-7812.
[9] Amilcar M,Renato D,Jaime G,et al.Environmental applications of semiconductor photocatalysis for reducing pollution[J].Environmental Science and Engineering,2017,10:159-192.
[10] Lu S S,Li J,Duan F,et al.One-step preparation of Bi4O5BrxI2-x solid solution with superior photocatalytic performance for organic pollutants degradation under visible light[J].Applied Surface Science,2019,475:577-586.
[11] 李阳.钒酸铋基复合光催化材料的制备及光催化性能研究[D].广东:华南理工大学,2018.
[12] Subramanyam P,Vinodkumar T,Nepak D,et al.Mo-doped BiVO4@reduced graphene oxide composite as an efficient photoanode for photoelectrochemical water splitting[J].Catalysis Today,2019,325:73-80.
[13] Wang M,Liu Q,Che Y S,et al.Characterization and photocatalytic properties of N-doped BiVO4 synthesized via a sol-gel method[J].Journal of Alloys and Compounds,2012,548:70-76.
[14] Zhou F Q,Fan J C,Xu Q J,et al.BiVO4 nanowires decorated with CdS nanoparticles as Z-scheme photocatalyst with enhanced H2 generation[J].Applied Catalysis B:Environmental,2017,201:77-83.
[15] Li S,Pan J Q,Li H L,et al.The transparent SnO/ZnO quantum dots/SnO2 p-n junction towards the enhancement of photovoltaic conversion[J].Chemical Engineering Journal,2019,366:305-312.
[16] Wang Y Q,Lu N,Luo M,et al.Enhancement mechanism of fiddlehead-shaped TiO2-BiVO4 type Ⅱ heterojunction in SPEC towards RhB degradation and detoxification[J].Applied Surface Science,2019,463:234-243.
[17] 陈海锋,潘国祥,徐敏虹.酞菁钴敏化BiVO4光催化剂的超声化学法制备与光催化性能[C].重庆:第七届中国功能材料及其应用学术会议,2010.
[18] Li C J,Wang S P,Wang T,et al.Monoclinic porous BiVO4 networks decorated by discrete g-C3N4 nano-islands with tunable coverage for highly efficient photocatalysis[J].Small,2014,10(14):2783-2790.
[19] Chen X B,Liu L,Yu P Y,et al.Increasing solar absorption for photocatalysis with black hydrogenated titanium dioxide nanocrystals[J].Science,2011,331:746-750.
[20] Wang Y,Wang X C,Antonietti M.Polymeric graphitic carbon nitride as a heterogeneous organocatalyst:from photochemistry to multipurpose catalysis to sustainable chemistry[J].Angewandte Chemie-International Edition,2012,51(1):68-89.
[21] Dong F,Wu L W,Sun Y J,et al.Efficient synthesis of polymeric g-C3N4 layered materials as novel efficient visible light driven photocatalysts[J].Journal of Materials Chemistry,2011,21(39):15171-15174.
[22] Dong F,Wang Z Y,Sun Y J,et al.Engineering the nanoarchitecture and texture of polymeric carbon nitride semiconductor for enhanced visible light photocatalytic activity[J].Journal of Colloid and Interface Science,2013,401:70-79.
[23] Sathyaseelan B,Manikandan E,Sivakumar K,et al.Enhanced visible photoluminescent and structural properties of ZnO/KIT-6 nanoporous materials for white light emitting diode (w-LED) application[J].Journal of Alloys and Compounds,2015,651:479-482.
[24] Magdalane C M,Kaviyarasu K,Raja A,et al.Photocatalytic decomposition effect of erbium doped cerium oxide nanostructures driven by visible light irradiation:investigation of cytotoxicity,antibacterial growth inhibition using catalyst[J].Journal of Photochemistry and Photobiology B:Biology,2018,185:275-282.
[25] 陈永刚.异质结构TiO2光催化剂的研析[D].济南:山东轻工业学院,2010.
[26] Zhou B,Zhao X,Liu H J,et al.Visible-light sensitive cobalt doped BiVO4(Co-BiVO4) photocatalytic composites for the degradation of methylene blue dye in dilute aqueous solutions[J].Applied Catalysis B:Environmental,2010,99:214-221.
[27] Magdalane C M,Kaviyarasu K,Matinise N,et al.Evaluation on La2O3 garlanded ceria heterostructured binary metal oxide nanoplates for UV/visible light induced removal of organic dye from urban wastewater[J].South African Journal of Chemical Engineering,2018,26:49-60.
[28] 张进.水热法制备钒酸铋及可见光催化降解亚甲基蓝溶液研究[J].广东化学,2012,39(17):34-35.
[29] Ma S,Li R,Lv C,et al.Facile synthesis of ZnO nanorod arrays and hierarchical for photocatalysis and gas sensor applications[J].Journal of Hazardous Materials,2011,192(2):730-740.
[30] Zhang Y,Zhang X T,Wang D,et al.Protecting hydrogenation-generated oxygen vacancies in BiVO4 photoanode for enhanced water oxidation with conformal ultrathin amorphous TiO2 layer[J].Applied Surface Science,2017,403:389-395.
[31] Niu F,Chen D,Qin L S,et al.Synthesis of Pt/BiFeO3 heterostructured photocatalysts for highly efficient visible-light photocatalytic performances[J].Solar Energy Materials & Solar Cells,2015,143:386-396.
[32] Tian N,Huang H W,He Y,et al.Mediator-free direct Z-scheme photocatalytic system:BiVO4/g-C3N4 organic-inorganic hybrid photocatalyst with highly efficient visible-light-induced photocatalytic activity[J].Dalton Transactions,2015,44(9):4297-4307.
[33] Harrington D A,Van den Driessche P.Mechanism and equivalent circuits in electrochemical impedance spectroscopy[J].Electrochimica Acta,2011,56:8005-8013.
[34] Parmar K P S,Kang H J,Bist A,et al.Photocatalytic and photoelectrochemical water oxidation over metal-doped monoclinic BiVO4 photoanodes[J].ChemSusChem,2012,55:1926-1934.
[35] Zalfani M,Mahdouani M,Bourguiga R,et al.Experimental and theoretical study of optical properties and quantum size phenomena in the BiVO4/TiO2 nanostructures[J].Superlattice Microstruct,2015,83:730-744.
AI Summary AI Mindmap
PDF (4753KB)

489

访问

0

被引

导航
相关文章

AI思维导图

/