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双金属位催化剂Ag-Ni/g-C3N4可见光催化降解亚甲基蓝
作者:郑小刚 杜京城 付孝锦 由耀辉 宋玉春 李子黎   
单位:内江师范学院化学化工学院 四川 内江 641100 
关键词:氮化碳 银-镍负载 协同效应 亚甲基蓝 光催化活性 
分类号:TQ13
出版年,卷(期):页码:2018,46(1):85-92
DOI:
摘要:

采用原位还原法制备负载型双金属位光催化剂Ag-Ni/g-C3N4,并考察其对亚甲基蓝的可见光催化降解性能。结果表明:与Ag/g-C3N4和Ni/g-C3N4相比,双金属位Ag-Ni/g-C3N4对亚甲基蓝具有更好的光催化降解活性。总负载量为4.0%时,金属Ag和Ni质量比为1:1的光催化剂Ag(2)-Ni(2)/g-C3N4呈现出最好的催化活性,且循环使用7次后的光降解活性略微减小。其原因可能是金属Ag粒子与Ni粒子间的协同效应明显提高光生载流子在Ag-Ni粒子与g-C3N4的界面快速传递和光生电子–空穴对有效分离。

 The supported bimetallic Ag-Ni/g-C3N4 photocatalysts were generated by an in-situ reduction route, and the photocatalytic degradation of methylene blue under visible light illumination was investigated. The results indicate that the bimetallic Ag-Ni/g-C3N4 sample presents a better photocatalytic activity for methylene blue, compared to Ag/g-C3N4 and Ni/g-C3N4 samples. At the total loading mass of metal particles of 4.0%, the photocatalyst Ag(2)-Ni(2)/g-C3N4 sample with Ag/Ni mass ratio of 1:1 exhibits a superior degradation activity, and slightly deactivates after seven times. It can be ascribed to the synergetic effect between metallic Ag and Ni, which can greatly enhance the transfer rate of photo-induced carriers and effectively separate the photo-generated electron–hole pairs.

基金项目:
国家自然基金青年基金(21506103)项目。
作者简介:
郑小刚(1986—),男,博士,讲师。
参考文献:
[1] 涂盛辉, 巫辉, 梁海营, 等. 醇类在Pt-TiO2纳米管上的光催化制 氢[J]. 化工学报, 2013, 64(9): 3229−3234.
TU Shenghui, WU Hui, Liang Haiying, et al. CIESC J (in Chinese), 2013, 64(9): 3229−3234.
[2] 曲济方, 方莉, 武志刚, 等. SO42?/TiO2-SiO2的制备及光催化降解苯  酚[J]. 化工学报, 2014, 55(1): 139−142.
QU Jifang, FANG Li, WU Zhigang, et al. CIESC J (in Chinese), 2014, 55(1): 139−142.
[3] LI M, ZHANG L, WU M, et al. Mesostructured CeO2/g-C3N4 nanocomposites: Remarkably enhanced photocatalytic activity for CO2 reduction by mutual component activations[J]. Nano Energy, 2016, 19: 145−155.
[4] ONG W, PUTRILI L, TAN L, et al. Heterostructured AgX/g-C3N4 (X = Cl and Br) nanocomposites via a sonication-assisted deposition- precipitation approach: Emerging role of halide ions in the synergistic photocatalytic reduction of carbon dioxide[J]. Appl Catal B,  
2016, 180: 530−543.
[5] 谷秀梅, 王承遇. 镍离子掺杂对TiO2薄膜光催化活性的影响[J]. 硅酸盐学报, 2004, 32(5): 558−563.
GU Xiumei, WANG Chengyu. J Chin Ceram Soc, 2004, 32(5): 558−563.
[6] 牟柏林, 侯天意, 霍丽娟, 等. 天然沸石负载ZnO/SnO2复合半导体的光催化活性[J]. 硅酸盐学报, 2005, 33(11): 1367−1370.
MOU Bailin, HOU Tianyi, HUO Lijuan, et al. J Chin Ceram Soc, 2005, 33(11): 1367−1370.
[7] 杨平, 霍瑞亭. 偶联剂改性对纳米二氧化钛光催化活性的影响[J]. 硅酸盐学报, 2013, 41(3): 410−415.
YANG Ping, HUO Ruiting. J Chin Ceram Soc, 2013, 41(3): 410−415.
[8] 徐鹏, 李佑稷, 刘晨, 等. 银掺杂介孔二氧化钛的制备及可见光催化性能[J]. 硅酸盐学报, 2014, 42(9): 1196−1202.
XU Peng, LI Youji, LIU Chen, et al. J Chin Ceram Soc, 2014, 42(9): 1196−1202.
[9] TONG Z, YANG D, XIAO T, et al. Biomimetic fabrication of g-C3N4/TiO2 nanosheets with enhanced photocatalytic activity toward organic pollutant degradation[J]. Chem Eng J, 2015, 260: 117−125.
[10] ZHSNG Y, THOMAS A, ANTONIETTI M, et al. Activation of carbon nitride solids by protonation: morphology changes, enhanced ionic conductivity, and photoconduction experiments[J]. J Am Chem Soc, 2009, 131: 50−51.
[11] WU Z. Photocatalytic degradation of methylene blue over TiO2 thin film[J]. J Nat Gas Chem, 2001, 10(4): 331−350.
[12] SHALOM M, GUTTENTA M, FETTKENHAUER C et al. In-situ formation of heterojunctions in modified graphitic carbon nitride: Synthesis and noble metal free photo-catalysis[J]. Chem Mater, 2014, 26: 5812−5818.
[13] PATNAIK S, MARTHA S, ACHARYA S, et al. An overview on modification of g-C3N4 by carbonaceous materials for photocatalytic applications[J]. Inorg Chem Front, 2016, 3: 336−347.
[14] LI M, QIANG Z, BOLTONo J, et al. UV disinfection of secondary water supply: Online monitoring with micro-fluorescent silica detectors[J]. Chem Eng J, 2014, 255: 165–170.
[15] SU D, PERATHONER S, CENTI G. Nanocarbons for the development of advanced catalysts[J]. Chem Rev, 2013, 113: 5782−5816.
[16] TAN L, LONG W, CHAI S, et al. Growth of carbon nanotubes over non-metallic based catalysts: A review on the recent developments[J]. Catal Today, 2013, 217: 1−12.
[17] 何志桥, 陈锦萍, 童丽丽, 等. BiOCl/g-C3N4异质结催化剂可见光催化还原CO2[J]. 化工学报, 2016, 67(11): 4635−4642. 
HE Zhiqiao, CHEN Jinping, TONG Lili, et al. CIESC J (in Chinese), 2016, 67(11): 4635−4642. 
[18] 李爱昌, 卢艳红, 曹国蕾, 等. (Ni-Mo)/TiO2纳米薄膜光电催化降解罗丹明B的性能[J]. 硅酸盐学报, 2011, 39(8): 1362−1367.
LI Aichang, LU Yanhong, CAO Guolei, et al. J Chin Ceram Soc, 2011, 39(8): 1362−1367.
[19] GAO J, WANG J, QIAN X,  DONG Y, et al. One-pot synthesis of copper doped graphitic carbon nitride nanosheet by heating Cu-melamine supramolecular network and its enhanced visible-light driven photocatalysis[J]. J Solid State Chem, 2015, 228: 60−64.
[20] SHALOM M, GIMENEZ S, SCHIPPER F et al. Controlled carbon nitride growth on surfaces for hydrogen evolution electrodes[J]. Angew Chem Int Ed, 2014, 53: 3654−3658.
 
 

 

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