化工新型材料

化工新型材料 ›› 2023, Vol. 51 ›› Issue (6) : 218-224. DOI: 10.19817/j.cnki.issn1006-3536.2023.06.039

科学研究

g-C₃N₄/BiOCl复合材料的制备及其光催化性能研究

^1,2*

作者信息 +

Preparation and photocatalytic properties of g-C₃N₄/BiOCl composites

Liang Xinyue¹, Huang Hedong¹, Meng Fanjie¹, Hou Jianxin¹, Gou Zeyu^1,2

Author information +

文章历史 +

Received
2022-01-11
Issue Date	Revised Date
2023-07-07	2022-01-11

PDF

摘要

高温缩聚法合成g-C₃N₄和水热法制备的BiOCl,在室温下通过简单的物理搅拌使片层状g-C₃N₄附着在菊花状的BiOCl上,控制g-C₃N₄的质量分数分别为5%、10%、15%、20%和25%,合成g-C₃N₄/BiOCl复合光催化剂。通过扫描电镜(SEM)、EDS能谱和BET比表面表征方法,揭示了g-C₃N₄/BiOCl复合光催化剂的微观结构;紫外-可见光(UV-Vis)结果显示g-C₃N₄/BiOCl可将光吸收范围延伸到可见光范围,其中BiOCl/CN-10具有更窄的禁带宽度;荧光光谱(PL)证实BiOCl/CN-10抑制光生载流子的复合能力最强;同时对g-C₃N₄/BiOCl降解染料废水罗丹明B(RhB)、亚甲基蓝(MB)和甲基橙(MO)的光催化能力进行了评估,结果表明g-C₃N₄/BiOCl对RhB具有优异的光催化降解能力,其中BiOCl/CN-10在光反应40min时就达到了97.23%,其光催化性能远远优于纯BiOCl。BiOCl/CN-10优异的光催化性能可能是由于g-C₃N₄与BiOCl形成p-n的异质结可促进更多的光生电子定向转移,使催化剂中更多的活性位点参与光催化氧化反应,从而有效提高光催化活性。

Abstract

g-C₃N₄ was synthesized by high-temperature polycondensation method and BiOCl was prepared by hydrothermal method.By simple physical stirring at room temperature,the lamellar g-C₃N₄ was successfully attached to chrysanthemum-like BiOCl to obtain g-C₃N₄/BiOCl composite photocatalysts,with g-C₃N₄ mass fraction of 5%,10%,15%,20% and 25%,respectively.The microstructure of g-C₃N₄/BiOCl composite photocatalysts was revealed by SEM,EDS and BET specific surface characterization method.UV-Vis results showed that g-C₃N₄/BiOCl could extend the light absorption range to the visible light range,where BiOCl/CN-10 had a narrower band gap.Fluorescence spectra (PL) confirmed that g-C₃N₄/BiOCl-10 had the strongest ability to inhibit the recombination of photogenerated carriers.Meanwhile,the photocatalytic capacity of g-C₃N₄/BiOCl for the degradation of RhB,MB and MO in dye wastewater was evaluated.The results showed that g-C₃N₄/BiOCl had excellent photocatalytic capacity for the degradation of RhB,in which BiOCl/CN-10 reached 97.23% after 40min of photocatalytic reaction.Its photocatalytic performance was far superior to that of pure BiOCl.The excellent photocatalytic performance of BiOCl/CN-10 might be due to the formation of p-n heterojunction between g-C₃N₄ and BiOCl,which could promote more photogenic electron directional transfer,and enabled more active sites in the catalyst to participate in the photocatalytic oxidation reaction,thus effectively improving the photocatalytic activity.

关键词

g-C₃N₄ / BiOCl / 异质结 / 复合光催化剂

Key words

g-C₃N₄ / BiOCl / heterojunction / compound photocatalyst

引用本文

引用格式 ▾

g-C₃N₄/BiOCl复合材料的制备及其光催化性能研究[J]. 化工新型材料, 2023, 51(6): 218-224 DOI:10.19817/j.cnki.issn1006-3536.2023.06.039

登录浏览全文

4963

注册一个新账户忘记密码

参考文献

原文顺序 | 出版日期 | 本文引用

[1] 全凤娇,石彦彪,孙红卫,等.卤氧化铋光催化去除环境污染物[J].华中师范大学学报:自然科学版,2021,55(6):925-940,975.
[2] 叶润泽.BiOCI/g-C₃N₄复合材料的制备与可见光催化性能研究[J].电子世界,2021(9):62-63.
[3] Ren Q,Liu Y M,Yang Q,et al.A review:photocatalysts based on BiOCl and g-C₃N₄ for water purification[J].Catalysts,2021,11(9):1084.
[4] Shan W J,Hu Y,Bai Z G,et al.In situ preparation of g-C₃N₄/bismuth-based oxide nanocomposites with enhanced photocatalytic activity[J].Applied Catalysis B:Environmental,2016,188:1-12.
[5] 张慧,刘海津,陈敏,等.BiOAc/BiOX(X=Cl,Br)复合材料的制备及其对混合染料的去除[J].环境科学研究,2021,34(7):1687-1699.
[6] 王熙,龚超,王浩,等.BiOCl光催化材料制备方法和性能改性研究进展[J].当代化工研究,2019(17):109-111.
[7] Guo S Q,Zhu X H,Zhang H J,et al.Improving photocatalytic water treatment through nanocrystal engineering:mesoporous nanosheet-assembled 3D BiOCl hierarchical nanostructures that induceUnprecedented large vacancies[J].Environmental Science & Technology,2018,52(12):6872-6880.
[8] Lu Y,Song J M,Li W F,et al.Preparation of BiOCl/Bi₂S₃ composites by simple ion exchange method for highly efficient photocatalytic reduction of Cr⁶⁺[J].Applied Surface Science,2020,506(C):145000-145000.
[9] Zeng R J,Luo Z B,Su L S,et al.Palindromic molecular beacon based Z-scheme BiOCl-Au-CdS photoelectrochemical biodetection[J].Analytical Chemistry,2019,91(3):2447-2454.
[10] 许世超,朱天哲,乔阳,等.Z型BiVO₄/GO/g-C₃N₄复合材料的制备及其可见光下催化性能(英文)[J].无机材料学报,2020,35(7):839-846.
[11] 胡金娟,马春雨,王佳琳,等.GO/TiO₂-g-C₃N₄纳米复合材料的制备及可见光催化性能[J].无机化学学报,2020,36(12):2240-2248.
[12] 张芬,柴波,廖翔,等.RGO/C₃N₄复合材料的制备及可见光催化性能[J].无机化学学报,2014,30(4):821-827.
[13] 伍倩,于芹芹,戴友芝.CNQDs/Ag₃PO₄/g-C₃N₄复合光催化材料的制备及其对双酚A的降解性能[J].环境工程学报,2022,16(1):101-111.
[14] 梁家驰,李昕奇,左建良,等.超分子前驱体对g-C₃N₄/BiOI光催化剂结构及其催化性能的影响[J].工业催化,2021,29(8):26-30.
[15] 李娜,王茗,赵北平,等.g-C₃N₄-BiOBr复合材料制备及可见光催化性能[J].无机化学学报,2016,32(6):1033-1040.
[16] Wei T,Pei L Z,Lin N.BiOCI nanosheets with high photocatalytic performance for removal of methyl orange[J].Journal of Bionanoscience,2016,10(4):316-320.
[17] 梁红玉,邹赫,胡绍争,等.g-C₃N₄/Bi₂O₂CO₃ 2D纳米片复合材料的制备及可见光催化性能研究[J].分子催化,2018,32(2):152-162.
[18] 周杰,管国锋,朱蓓蓓,等.g-C₃N₄/ZnO复合材料的制备、表征及可见光催化性能[J].精细化工,2018,35(2):228-232,66.
[19] 李悦,王博,朱晓丽,等.g-C₃N₄催化石墨化碳质材料的制备及光催化性能研究[J].人工晶体学报,2021,50(11):2156-2163.
[20] 郑丹丹,黄忠铖,刘敏,等.g-C₃N₄基复合分离膜的制备及光催化性能[J].无机化学学报,2021,37(12):2235-2243.
[21] 邢伟男,程珂,熊若帆,等.生物炭功能化g-C₃N₄光催化剂构筑及催化性能[J].林业工程学报,2021,6(6):137-141.
[22] 郭丽丽,陈新华,陈港,等.室温下离子液体合成BiOX及其光催化性能研究[J].化工新型材料,2021,49(5):190-194.
[23] Yang W,Shan X Y,Chen Y,et al.Enhanced photocatalytic performance of C₃N₄ via doping with π-deficient conjugated pyridine ring and BiOCl composite heterogeneous materials[J].Diamond & Related Materials,2020,108:107926.
[24] Zhang X,Ai Z H,Jia F L,et al.Generalized one-pot synthesis,characterization,and photocatalytic activity of hierarchical BiOX(X=Cl,Br,I) nanoplate microspheres[J].Journal of Physical Chemistry C,2008,112(3):747-753.
[25] 严超,牛浩洋,严飞越,等.g-C₃N₄基复合纳米材料光催化性能研究进展[J].工业催化,2020,28(8):1-7.
[26] 王燕琴,瞿梦,冯红武,等.卤氧化铋光催化剂的研究进展[J].化工进展,2014,33(3):660-667.
[27] 毛晓明.BiOCl光催化降解MB染料废水的研究[J].科技创新导报,2013(10):159-160.
[28] 王丹军,申会东,郭莉,等.BiOBr/Bi₂MoO₆异质结的构筑及对甲基橙的吸附/光催化性能的协同作用机制[J].环境科学学报,2017,37(5):1751-1762.
[29] Song L J,Pang Y Y,Zheng Y J,et al.Hydrothermal synthesis of novel g-C₃N₄/BiOCl heterostructure nanodiscs for efficient visible light photodegradation of Rhodamine B[J].Applied Physics A,2017,123(8):500.
[30] Yin S,Di J,Li M,et al.Ionic liquid-assisted synthesis and improved photocatalytic activity of p-n junction g-C₃N₄/BiOCl[J].Journal of Materials Science,2016,51(10):4769-4777.
[31] Li Min,Zhang Junying,Gao Hong,et al.Microsized BiOCl square nanosheets as ultraviolet photodetectors and photocatalysts[J].ACS applied Materials & Interfaces,2016,8(10),DOI:10.1021/acsami.6b00042.
[32] Zhang X L,An D,Feng D X,et al.In situ surfactant-free synthesis of ultrathin BiOCl/g-C₃N₄ nanosheets for enhanced visible-light photodegradation of rhodamine B[J].Applied Surface Science,2019,476:706-715.

基金资助

国家自然科学基金(51962029);内蒙古自治区科技计划项目(2019GG265);内蒙古农业大学高层次人才启动项目(NDGCC2016-20);内蒙古自治区高等学校“青年科技英才支持计划”项目(NJYT-19-A08);内蒙古自治区“草原英才”工程青年创新创业人才项目(内人社办函〔2022〕274号);内蒙古自治区重大专项(2020ZD0024);内蒙古自然科学基金——杰出青年科学基金项目(2022JQ08)

AI Summary AI Mindmap