Ag/Zn-MIP-TiO2的制备及其光催化性能
Preparation of Ag/Zn-MIP-TiO2 and its photocatalytic performance
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摘要: 以对羟基苯甲酸乙酯(EP)为印迹分子,利用溶胶-凝胶法制备出Ag/Zn-MIP-TiO2,并对其光催化性能进行了研究.从3个方面研究了Ag/Zn-MIP-TiO2的选择性:UV-Vis光谱的面积特定波长处吸光度以及浓度.3个角度的选择性因子分别为4.12、1.02与4.81,表明Ag/Zn-MIP-TiO2具有较高的选择性,且其选择性并非只是针对污染物的特征基团,而是对整个目标污染物具有特异选择性.Abstract: Ag/Zn-MIP-TiO2 was prepared by sol-gel method using EP as imprinted molecule, and its photocatalytic properties were studied. Moreover, the selectivity of Ag/Zn-MIP-TiO2 was investigated from three aspects:the UV-Vis spectrum, absorbance at specific wavelengths, and concentration. The selectivity factors of the three angles were 4.12, 1.02 and 4.81, indicating that Ag/Zn-MIP-TiO2 had high selectivity, and its selectivity was not only for the characteristic radical group of pollutants, but for the specific target pollutants.
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Key words:
- TiO2 /
- sol-gel method /
- selectivity factor
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[1] ELLIS J B. Pharmaceutical and personal care products (PPCPs) in urban receiving waters[J]. Environmental Pollution, 2006, 144(1):184-189. [2] LIU J L, WONG M H. Pharmaceuticals and personal care products (PPCPs):A review on environmental contamination in China[J]. Environment International, 2013, 59:208-224. [3] SUAREZ S, LEMA J M, OMIL F. Removal of pharmaceutical and personal care products (PPCPs) under nitrifying and denitrifying conditions[J]. Water Research, 2010, 44(10):3214-3224. [4] 颜昭,朱雷,汪恂.分子印迹TiO2光催化降解水杨酸实验研究[J].水处理技术,2019,45(4):83-87. YAN Z, ZHU L, WANG X. Experimental study on photocatalytic degradation of salicylic acid by molecularly imprinted TiO2[J].Water Treatment Technology, 2019, 45(4):83-87(in Chinese).
[5] ANTONELLI D M, YING J Y. Synthesis of hexagonally packed mesoporous TiO2 by a modified sol-gel method[J]. Angewandte Chemie International Edition in English, 1995, 34(18):2014-2017. [6] CHEN L, WANG X, LU W, et al. Molecular imprinting:Perspectives and applications[J]. Chemical Society Reviews, 2016, 45(8):2137-2211. [7] 张阳,安娅, 魏声培, 等. 罗丹明B表面分子印迹N-TiO2的制备及其在可见光下的选择性光催化研究[J]. 化工新型材料, 2018, 46(6):194-198. ZHANG Y, AN Y, WEI S P, et al. Preparation of surface molecularly imprinted N-TiO2 from Rhodamine B and its selective photocatalysis under visible light[J]. New Chemical Materials, 2018, 46(6):194-198(in Chinese).
[8] 占昌朝, 曹小华, 金文雄, 等. 以水杨酸为模板分子的Nd掺杂分子印迹TiO2的制备及光催化性能[J].材料导报, 2019, 33(6):947-953. ZHAN C C, CAO X H, JIN W X, et al.Preparation and photocatalytic activity of Nd-doped molecularly imprinted TiO2 with salicylic acid as template molecule.[J]. Materials Reports, 2019, 33(6):947-953(in Chinese).
[9] GADZEKPO V P Y, CHRISTIAN G D. Determination of selectivity coefficients of ion-selective electrodes by a matched-potential method[J]. Analytica Chimica Acta, 1984, 164:279-282. [10] SHARABI D, PAZ Y. Preferential photodegradation of contaminants by molecular imprinting on titanium dioxide[J]. Applied Catalysis B:Environmental, 2010, 95(1/2):169-178. [11] 林春敬,胡芸,韦朝海.锐钛矿{001}面TiO2纳米片对NOx的光催化氧化性能[J].环境化学,2013,32(8):1507-1512. LIN C J, HU Y, WEI C H. Photocatalytic oxidation of NOx on anatase titaniananosheets with exposed {001} facets[J]. Environmental Chemistry, 2013, 32(8):1507-1512(in Chinese).
[12] MONSHI A, FOROUGHI M R, MONSHI M R. Modified Scherrer equation to estimate more accurately nano-crystallite size using XRD[J]. World Journal of Nano Science and Engineering, 2012, 2(3):154-160.
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