期刊文献+

TiO_2-Ag_3PO_4光催化剂的制备及其紫外光催化性能 被引量:5

Preparation of TiO_2-Ag_3PO_4 photocatalyst and its photocatalytic activity under UV irradiation
下载PDF
导出
摘要 采用化学沉淀法(两步法)制备了TiO_2-Ag_3PO_4复合光催化剂,考察了该光催化剂紫外光催化降解阳离子染料番红花红T(简称ST)的性能。实验结果表明:在TiO_2-Ag_3PO_4投加量0.7 g/L,初始ST质量浓度70 mg/L、不调节溶液pH的条件下,紫外光照射35 min时的ST降解率高达97.9%;TiO_2-Ag_3PO_4复合光催化剂的光催化性能明显优于单一光催化剂Ag_3PO_4和TiO_2,同时也明显优于Ag-AgCl/Ag_3PO_4复合光催化剂;避光条件下反应40 min,TiO_2-Ag_3PO_4对ST的吸附量仅为2.3 mg/g;TiO_2-Ag_3PO_4在室内自然光下也具有一定的光催化活性;TiO_2-Ag_3PO_4的光催化活性在酸性条件下要优于碱性条件;TiO_2-Ag_3PO_4重复使用5次后,其光催化活性无明显下降,稳定性较好。 The TiO2-Ag3PO4 composite photocatalyst was prepared by chemical precipitation method (two-step method), and its photocatalytic activity under UV light to degradation of safranine T (ST) cationic dye was explored. The experimental results show that: Under the conditions of TiO2-Ag3PO4 dosage 0.7 g/L, initial ST mass concentration 70 mg/L, without pH adjustment and UV irradiation time 35 min, the degradation rate of ST is up to 97.9%; The photocatalytic activity of TiO2-Ag3PO4 is obviously higher than that of single photocatalyst Ag3PO4 and TiO2, and also Ag-AgC1/Ag3PO4 composite photocatalyst; The adsorption capacity of ST is only 2.3 mg/g after dark reaction for 40 min; TiO2-Ag3PO4 also has photocatalytic activity under indoor natural light; The photocatalytic activity of TiO2-Ag3PO4 in acidic condition is better than that in alkaline condition; TiO2-Ag3PO4 is stable with same photocatalytic activity after 5 times of reuse.
出处 《化工环保》 CAS CSCD 北大核心 2016年第1期53-58,共6页 Environmental Protection of Chemical Industry
基金 湖南省教育厅科学研究项目(14C0317) 湖南工学院校级科研项目(HY14012)
关键词 化学沉淀法 光催化剂 染料废水 番红花红T 紫外光 光催化性能 chemical precipitation method photocatalyst dye wastewater safranine T ultraviolet light photocatalytic activity
  • 相关文献

参考文献24

二级参考文献170

共引文献116

同被引文献58

  • 1WANG GuangLi,XU JingJuan,CHEN HongYuan.Progress in the studies of photoelectrochemical sensors[J].Science China Chemistry,2009,52(11):1789-1800. 被引量:3
  • 2王丽,李亚萍,贾冬梅,姚广祥,徐龙云.二氧化钛固定化负载及其光催化性能[J].环境工程学报,2015,9(6):2807-2810. 被引量:10
  • 3姚秉华,杨莉,杨国农,赵青.复合光催化剂CeO_2/TiO_2的制备及性能研究[J].化学研究与应用,2004,16(4):463-465. 被引量:7
  • 4王焕英,宋秀芹.以六次甲基四胺为沉淀剂制备纳米ZrO_2的研究[J].人工晶体学报,2005,34(4):615-619. 被引量:5
  • 5Yi Zhiguo, Ye Jinhua, Kikugawa Naoki, et al. An or- thophosphate semiconductor with photooxidation prop- erties under visible light irradiation[J]. Nat Mater, 2010, 9: 559-564.
  • 6Bi Yingpu, Ouyang Shuxin, Umezawa Naoto, et al. Facet effect of single-crystalline Ag3PO4 sub-microcrys- tals on photocatalytic properties [J]. J Am Chem Soc, 2011, 133 (17) : 6490 - 6492.
  • 7Dong Pengyu, Wang Ynhua, Li Huihui, et al. Shape- controllable synthesis and morphologydependent pho- tocatalytic properties of Ag3PO4 crystals [J]. J Mater ChemA, 2013, 1 (15) : 4651 -4656.
  • 8Jiao Zhengbo, Zhang Yah, Yu Hongchao, et al. Con- cave trisoctahedral Ag3PO4 microcrystals with high- index facets and enhanced photocatalytic properties [J]. ChemCommun, 2013, 49 (6): 636-638.
  • 9Cui Xia, Zheng Yifan, Zhou Huan, et al. The effect of synthesis temperature on the morphologies and visible light photocatalytic performance ofAg3PO4 [J]. J Taiwan Inst ChemEng, 2016, 60: 328-334.
  • 10Wang Hua, He Liang, Wang Lihua, et al. Facile synthesis of Ag3PO4 tetrapod microcrystals with an increased percentage of exposed {110} facets and highly efficient photocatalytic properties [ J ]. Cryst EngComm, 2012, 14 (24) : 8342- 8344.

引证文献5

二级引证文献14

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部