| Pr3+:Y2SiO5/ZnO-TiO2/ACF复合材料的制备及其光催化性能 |
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| 引用本文： | 徐萌川,王亚淼,杨毅,焦 岩,刘 颖,颜学武.Pr3+:Y2SiO5/ZnO-TiO2/ACF复合材料的制备及其光催化性能[J].精细化工,2017,34(5). |
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| 作者姓名： | 徐萌川 王亚淼 杨毅 焦 岩 刘 颖 颜学武 |
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| 作者单位： | 南京理工大学,南京理工大学,南京理工大学,南京信息工程大学,南京理工大学,南京理工大学 |
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| 基金项目： | 江苏省产学研前瞻性联合研究项目（BY2016004-02）；江苏高校优势学科建设工程资助项目（PAPD）；江苏省环境净化材料工程技术研究中心开放基金项目（KFK1504） |
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| 摘 要： | 采用溶胶-凝胶法将ZnO掺杂进荧光粉/TiO_2体系,并以活性炭纤维(ACF)为载体,制备了Pr~(3+)∶Y_2SiO_5/ZnO-TiO_2/ACF复合材料。采用XRD、SEM、EDS、FS和UV-vis DRS,对材料的结构及性能进行了表征,并以亚甲基蓝为模拟降解物,考察了ZnO掺杂量对复合材料可见光催化性能的影响。结果表明,当ZnO掺杂质量为TiO_2质量的10%时,制得的复合材料光催化性能最强,在500 mL质量浓度为15 mg/L的亚甲基蓝溶液中反应12 h后亚甲基蓝去除率高达98.0%,反应符合拟一级动力学方程,反应速率常数为0.341 3 h~(-1),是未掺杂ZnO的Pr~(3+)∶Y_2SiO_5/TiO_2/ACF的1.75倍,复合材料重复使用4次后亚甲基蓝去除率仍然保持在85%以上。
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| 关 键 词： | 上转换 复合半导体 复合材料 吸附 光催化 再生 功能材料 |
| 收稿时间： | 2016/10/3 0:00:00 |
| 修稿时间： | 2017/1/2 0:00:00 |
Preparation and Photocatalytic Performance of Pr3+:Y2SiO5/ZnO-TiO2 Composite Deposited on Activated Carbon Fiber |
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| XU Meng-chuan,WANG Yamiao,YANG Yi,JIAO Yan,LIU Ying and YAN Xuewu.Preparation and Photocatalytic Performance of Pr3+:Y2SiO5/ZnO-TiO2 Composite Deposited on Activated Carbon Fiber[J].Fine Chemicals,2017,34(5). |
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| Authors: | XU Meng-chuan WANG Yamiao YANG Yi JIAO Yan LIU Ying and YAN Xuewu |
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| Affiliation: | Nanjing University of Science and Technology,Nanjing University of Science and Technology,Nanjing University of Science and Technology,Nanjing University of Information Science and Technology,Nanjing University of Science and Technology,Nanjing University of Science and Technology |
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| Abstract: | Pr3+:Y2SiO5/ZnO-TiO2/ACF composites were prepared by sol-gel technique of anchoring ZnO and upconversion fluorescent material/TiO2 nanocomposites on activated carbon fiber(ACF). The properties of samples were characterized by XRD, SEM, EDS, FS, and UV-vis DRS. The photocatalytic activity of Pr3+:Y2SiO5/ZnO-TiO2/ACF was evaluated for degradation of methylene blue solution under visible light irradiation. The effect of ZnO mass doping concentration on photocatalytic activity of composites was investigated. The results showed that Pr3+:Y2SiO5/ZnO-TiO2/ACF showed the highest visible-light photocatalytic activity in the degradation of methylene blue (500mL, 15mg/L), when the mass fraction of ZnO doping was 10%. After 12 h, the degradation of methylene blue can be as high as 98.0%. The photodegradation followed pseudo first order process and reaction rate constant is 0.3413 h-1, which is 1.7 times as high as Pr3+:Y2SiO5/TiO2/ACF. The removal rate of methylene blue for Pr3+:Y2SiO5/ZnO-TiO2/ACF could be remained above 85% after recycling four times. |
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| Keywords: | upconversion coupled semiconductor composites adsorption photocatalytic regeneration |
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