Enhanced photocatalytic activities of silicon nanowires/graphene oxide nanocomposite: Effect of etching parameters.
作者： Mounir Gaidi , Kais Daoudi , Soumya Columbus , Anouar Hajjaji , My Ali El Khakani
DOI: 10.1016/J.JES.2020.08.010
关键词:
摘要: Abstract Homogeneous and vertically aligned silicon nanowires (SiNWs) were successfully fabricated using silver assisted chemical etching technique. The prepared samples characterized scanning electron microscopy, transmission microscopy atomic force microscopy. Photocatalytic degradation properties of graphene oxide (GO) modified SiNWs have been investigated. We found that the morphology depends on time etchant composition. length could be tuned from 1 to 42 µm, respectively when varying 5 30 min. concentration was accelerate process; doubling concentrations increases by a factor two for fixed time. Changes in bundle also studied as function parameters. diameter independent or composition while size with increasing and etchant concentration. addition GO improve significantly photocatalytic activity SiNWs. A strong correlation between parameters photocatalysis efficiency has observed, mainly at optimum 10 min 4:1:8. 92% obtained which further improved 96% hydrogen peroxide. Only 16% 31% observed bare Si GO/bare respectively. results demonstrate developed SiNWs/GO composite exhibits excellent performance used potential platform organic pollutants.
jesc.ac.cn参考文章(45)
Kian Mun Lee, Sharifah Bee Abdul Hamid, Chin Wei Lai, Multivariate analysis of photocatalytic-mineralization of Eriochrome Black T dye using ZnO catalyst and UV irradiation Materials Science in Semiconductor Processing. ,vol. 39, pp. 40- 48 ,(2015) , 10.1016/J.MSSP.2015.03.056
Andrew Eaton, A.E. Greenberg, Lenore S. Clesceri, Standard methods for the examination of water and wastewater Published in <b>1998</b> in Washington DC) by American public health association. ,(1992)
N. Brahiti, T. Hadjersi, H. Menari, S. Amirouche, O. El Kechai, Enhanced photocatalytic degradation of methylene blue by metal-modified silicon nanowires Materials Research Bulletin. ,vol. 62, pp. 30- 36 ,(2015) , 10.1016/J.MATERRESBULL.2014.11.007
Nacera Megouda, Yannick Cofininier, Sabine Szunerits, Toufik Hadjersi, Omar ElKechai, Rabah Boukherroub, Photocatalytic activity of silicon nanowires under UV and visible light irradiation Chemical Communications. ,vol. 47, pp. 991- 993 ,(2011) , 10.1039/C0CC04250A
Sanjay K Srivastava, Dinesh Kumar, SW Schmitt, KN Sood, SH Christiansen, PK Singh, None, Large area fabrication of vertical silicon nanowire arrays by silver-assisted single-step chemical etching and their formation kinetics. Nanotechnology. ,vol. 25, pp. 175601- ,(2014) , 10.1088/0957-4484/25/17/175601
Xing Zhong, Yongquan Qu, Yung-Chen Lin, Lei Liao, Xiangfeng Duan, Unveiling the Formation Pathway of Single Crystalline Porous Silicon Nanowires ACS Applied Materials & Interfaces. ,vol. 3, pp. 261- 270 ,(2011) , 10.1021/AM1009056
Yulong Liao, Wenxiu Que, Zhenhua Tang, Wenjuan Wang, Wenhan Zhao, Effects of heat treatment scheme on the photocatalytic activity of TiO2 nanotube powders derived by a facile electrochemical process Journal of Alloys and Compounds. ,vol. 509, pp. 1054- 1059 ,(2011) , 10.1016/J.JALLCOM.2010.09.175
In Kyu Moon, Junghyun Lee, Rodney S. Ruoff, Hyoyoung Lee, Reduced graphene oxide by chemical graphitization Nature Communications. ,vol. 1, pp. 73- 73 ,(2010) , 10.1038/NCOMMS1067
M. Vinothkannan, C. Karthikeyan, G. Gnana kumar, Ae Rhan Kim, Dong Jin Yoo, One-pot green synthesis of reduced graphene oxide (RGO)/Fe3O4 nanocomposites and its catalytic activity toward methylene blue dye degradation Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. ,vol. 136, pp. 256- 264 ,(2015) , 10.1016/J.SAA.2014.09.031
Qin Li, Beidou Guo, Jiaguo Yu, Jingrun Ran, Baohong Zhang, Huijuan Yan, Jian Ru Gong, Highly efficient visible-light-driven photocatalytic hydrogen production of CdS-cluster-decorated graphene nanosheets. Journal of the American Chemical Society. ,vol. 133, pp. 10878- 10884 ,(2011) , 10.1021/JA2025454