摘要
利用一锅水热法合成二氧化锆(ZrO_2)与碱式硝酸铋(Bi_6O_6(OH)_3(NO_3)_3)复合材料,并将其作为光催化剂应用于水溶液中三价砷(As(Ⅲ))的光催化氧化处理。研究结果表明,二氧化锆/碱式硝酸铋复合材料在光照下对水体中的As(Ⅲ)表现出很好的光氧化性能,经光照处理60 min后溶液中的As(Ⅲ)浓度降低了98%。此外,针对该复合材料的光催化体系,通过TA-PL、ESR等表征手段研究该复合材料在光照下所产生的具有氧化作用的活性物种分别有羟基自由基和超氧自由基。
The composite material of zirconium dioxide and bismuth subnitrate was synthesized by one-pothydrothermal method.The composite was utilized as photocatalyst in the photocatalytic oxidation of As(Ⅲ)in thewater.The investigation indicated that zirconium dioxide/bismuth subnitrate composite material can exhibit excellentphotocatalytic oxidation performance for As(Ⅲ)in the water.After irradiation for60minutes,the concentrationof As(Ⅲ)decreases about98%.In addition,characterization measures such as TA-PL,ESR were used todeterminate the active species generated by the surface of composite under irradiation.These effective active speciesare hydroxyl radical and superoxide radical.
作者
谢丽燕
周莎
王莉莹
郑秀明
黄建辉
XIE Liyan;ZHOU Sha;WANG Liying;ZHENG Xiuming;HUANG Jianhui(School of Environmental and Biological Engineering, Putian University, Putian Fujian 351100, China;Fujian Key Laboratory of Ecology-toxicological Effects & Control for Emerging Contaminants, Putian Fujian 351100, China)
出处
《莆田学院学报》
2017年第2期93-97,共5页
Journal of putian University
基金
省部共建"能源与环境"光催化国家重点实验室开放基金(SKLPEE-KF201505)
福建省科技厅自然科学基金项目(2016J05042)
福建省教育厅科技项目(JA15444)
莆田学院育苗基金项目(2015065)
关键词
三价砷
复合材料
碱式硝酸铋
二氧化锆
光催化氧化
trivalent arsenic
composite materials
bismuth subnitrate
zirconium dioxide
photocatalytic oxidation
