固相反应合成ZnO/g-C3N4光催化剂及光催化性能
收稿日期: 2020-04-18
网络出版日期: 2020-11-24
基金资助
国家自然科学基金项目(51864028);河南省教育厅重点项目(17A430034);河南省教育厅重点项目(18A430035);河南省创新型科技优秀团队(CXTD2013048)
Study on synthesis of ZnO/g-C3N4 photocatalysts using solid phase reaction method and their photocatalytic property
Received date: 2020-04-18
Online published: 2020-11-24
以乙酸锌、氢氧化钠和g-C3N4粉末为原料,并添加十二烷基苯磺酸钠粉末作为表面活性剂,采用室温固相研磨法制备了ZnO/g-C3N4光催化剂。并研究了复合材料的光催化性能。研究结果表明,经固相研磨后,会形成ZnO/g-C3N4复合材料,g-C3N4充分细化成薄片状。添加十二烷基苯磺酸钠粉末促进了g-C3N4发生相变。当g-C3N4含量较低时,产物的形貌呈现为纳米花,实际上是因为大量的氧化锌纳米片负载到g-C3N4片上。当g-C3N4含量较高时,产物为二维纳米片,由氧化锌纳米颗粒负载到g-C3N4片上。合成的ZnO/g-C3N4复合材料对亚甲基蓝表现出良好的可见光催化活性。
冯燕翔 , 张旺玺 , 梁宝岩 . 固相反应合成ZnO/g-C3N4光催化剂及光催化性能[J]. 无机盐工业, 2020 , 52(10) : 157 -160 . DOI: 10.11962/1006-4990.2019-0579
ZnO/g-C3N4 photocatalysts were prepared by solid-state grinding method at room temperature using Zn(CH3COO)2,NaOH and g-C3N4 powders as raw materials.Sodium dodecylbenzenesulfonate powder was added as a surfactant.The photocatalytic properties of the composites were studied.Results showed that ZnO/g-C3N4 composites formed after solid-state grinding and that g-C3N4 was refined into thin sheets.The addition of sodium dodecylbenzenesulfonate powder promoted the phase transformation of g-C3N4.When the content of g-C3N4 was low,the product assumed a nanoflower morphology,which was composed of a large number of ZnO nanosheets loaded on g-C3N4 flakes.When the content of g-C3N4 was higher,the produc presented many 2D g-C3N4 nanosheets loaded by ZnO nanocrystals.The synthesized ZnO/g-C3N4 composites exhibited good visible-light photocatalytic activity to methylene blue.
Key words: ZnO; g-C3N4; photocatalysis; solid-phase grinding
[1] | Hoffmann M R, Martin S T, Choi W, et al. Environmental applications of semiconductor photocatalysis[J]. Chemical Reviews, 1995,95(1):69-96. |
[2] | Osman H, Su Z, Ma X, et al. Synjournal of ZnO/C nanocomposites with enhanced visible light photocatalytic activity[J]. Ceramics International, 2016,8(42):10237-10241. |
[3] | Zhu L Y, Liu Z R, Xia P F, et al. Synjournal of hierarchical ZnO & graphene composites with enhanced photocatalytic activity[J]. Ceram.Int., 2018,1(44):849-856. |
[4] | Wang X, Blechert S, Antonietti M. Polymeric graphitic carbon nitride for heterogeneous photocatalysis[J]. ACS Catalysis, 2012,2(8):1596-1606. |
[5] | Adhikari S P, Pant H R, Kim H J, et al. Deposition of ZnO flowers on the surface of g-C3N4 sheets via hydrothermal process[J]. Ceram.Int., 2015,10(41):12923-12929. |
[6] | Chen D M, Wang K W, Ren T Z, et al. Synjournal and characterization of the ZnO/mpg C3N4 heterojunction photocatalyst with enhanced visible light photoactivity[J]. Dalton Transactions, 2014,43(34):13105-13114. |
[7] | Cao J, Gong Y, Wang Y, et al. Cocoon-like ZnO decorated graphitic carbon nitride nanocomposite:Hydrothermal synjournal and ethanol gas sensing application[J]. Materials Letters, 2017,13(198):76-80. |
[8] | Kumar S, Baruah A, Tonda S, et al. Cost-effective and eco-friendly synjournal of novel and stable N-doped ZnO/g-C3N4 core-shell nanoplates with excellent visible-light responsive photocatalysis[J]. Nanoscale, 2014,6(9):4830-4842. |
[9] | Pawar R C, Son Y, Kim J, et al. Integration of ZnO with g-C3N4 structures in core-shell approach via sintering process for rapid detoxification of water under visible irradiation[J]. Curr.Appl.Phys., 2016, 1(16):101-108. |
[10] | Liu W, Wang M, Xu C, et al. Significantly enhanced visible-light photocatalytic activity of g-C3N4 via ZnO modification and the mechanism study[J]. Journal of Molecular Catalysis A:Chemical, 2013,9(15):368-369. |
/
〈 |
|
〉 |