豆芽模板合成TiO2材料及其光催化还原Cr(Ⅵ)的性能研究  

Photocatalytic Reduction of Cr(Ⅵ) by TiO 2 Synthesized from Bean Sprouts as Template

作　　者：钦志强 贺子娟 赖妍 方沁 和佼[1] 陈永娟 闫智英[1] Qin Zhiqiang;He Zijuan;Lai Yan;Fang Qin;He Jiao;Chen Yongjuan;Yan Zhiying(School of Chemical Science and Engineering,Yunnan University,Kunming 650091,China)

机构地区：[1]云南大学化学科学与工程学院,云南昆明650091

出　　处：《云南化工》2023年第6期36-41,共6页Yunnan Chemical Technology

基　　金：国家自然科学基金项目(22062024,21773204,22062026);云南省应用基础研究资助计划项目(202201AS070003,202101AT070017);云南省高水平人才培训支持计划项目(YNWR-QNBJ-2020-093,云南省政府-2019-002)。

摘　　要：以廉价易得的豆芽为模板,通过将豆芽简单浸泡在钛前驱液中制备得到了保留豆芽形貌的多孔TiO2材料,通过XRD、N2吸附-脱附、SEM、TEM、XPS、UV-vis和荧光光谱进行表征,并对其紫外光下光催化还原Cr(Ⅵ)的性能进行探究。结果表明,在以甲酸为空穴牺牲剂的条件下,以豆芽茎为模板的TiO2(BSS-TiO2)效果最佳,光催化还原率为60 min达到100%,比无模板TiO2的光催化活性提高了22%,且该材料表现出较好的稳定性。Using cheap and easily available bean sprouts as template,porous TiO 2 material(BS-TiO 2)with the morphology of bean sprouts was prepared by simply soaking bean sprouts in titanium precursor solution.The material was characterized by XRD,N 2 adsorption-desorption,SEM,TEM,XPS,UV-vis and fluorescence spectra.The photocatalytic reduction performance of Cr(Ⅵ)was investigated under UV light.The results showed that TiO 2(BSS-TiO 2)using bean sprouts as template had the best effect under the condition that formic acid was used as hole sacrificing agent,and the photocatalytic reduction rate reached 100%within 60 min,which increased the photocatalytic activity by 22%compared with pure TiO 2.All the materials showed good stability.

关 键 词：TIO2 生物模板 光催化还原Cr(Ⅵ) 

分 类 号：TQ426[化学工程]