Photocatalytic degradation of acephate in pak choi, Brassica chinensis, with Ce-doped TiO2

文献类型： 外文期刊

第一作者： Wang, Lifeng

作者： Wang, Lifeng;Zhou, Xiaomao;Liu, Kailin;Bai, Lianyang;Wang, Lifeng;Bai, Lianyang;Zhou, Xuguo

作者机构：

关键词： photocatalysis;Acephate;field trial;TiO2/Ce

期刊名称：JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART B-PESTICIDES FOOD CONTAMINANTS AND AGRICULTURAL WASTES （ 影响因子：1.99； 五年影响因子：2.116 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： The photocatalytic degradation of acephate was investigated using Ce-doped TiO2 (TiO2/Ce) hydrosol. In contrast to previous research conducted under artificial light in the laboratory, this study investigated the decomposition of acephate in a field trial. The results show that acephate can be efficiently degraded by the TiO2/Ce system under natural field conditions; the degradation efficiency was affected by the dosage of the photocatalyst and acephate. The optimum dosage of TiO2/Ce was 2400g a.i.ha(-1), and the photodegradation efficiency of acephate reached 93.5% after 20h at an acephate dosage of 675g a.i.ha(-1). Ultra-performance liquid chromatography/mass spectrometry (UPLC/MS) analysis detected and identified four degradation products-methamidophos, phosphorothioic acid O,O,S-trimethyl ester, S-methyl methanethiosulfonate and phosphorous acid-that were formed during the TiO2/Ce photodegradation of acephate. Based on the structural identification of the degradation products, a probable photodegradation pathway was proposed, and the first decomposition step may be the cleavage of the C-N bond of acephate. Subsequently, the P-S and P-O bonds may be oxidized gradually or simultaneously to complete the mineralization.

分类号： X5

  • 相关文献

[1]Overexpression of an Apocynum venetum DEAD-Box Helicase Gene (AvDH1) in Cotton Confers Salinity Tolerance and Increases Yield in a Saline Field. Jie Chen,Sibao Wan,Huaihua Liu,Shuli Fan,Yujuan Zhang,Wei Wang,Minxuan Xia,Rui Yuan,Fenni Deng,Fafu Shen. 2016

[2]Overexpression of an Apocynum venetum DEAD-Box Helicase Gene (AvDH1) in Cotton Confers Salinity Tolerance and Increases Yield in a Saline Field (vol 6, 1227, 2015). Wan, Sibao,Liu, Huaihua,Fan, Shuli,Zhang, Yujuan,Wang, Wei,Xia, Minxuan,Yuan, Rui,Deng, Fenni,Shen, Fafu. 2016

[3]Degradation of acephate and its metabolite methamidophos in rice during processing and storage. Dong, Fengshou,Xu, Jun,Liu, Xingang,Li, Jing,Li, Yuanbo,Tian, Yingying,Guo, Liqun,Zheng, Yongquan,Shan, Weili. 2012

[4]Direct Chiral Determination of Acephate and Its Metabolite Methamidophos in Vegetables Using QuEChERS by Gas Chromatography-Tandem Mass Spectrometry. Wang, Xiangyun,Zhang, Hu,Xu, Hao,Qi, Peipei,Ji, Xiaofeng,Wang, Qiang,Wang, Xinquan. 2013

[5]Enantioselective Dissipation of Acephate and Its Metabolite, Methamidophos, during Tea Cultivation, Manufacturing, and Infusion. Pan, Rong,Chen, Hongping,Wang, Chen,Wang, Qinghua,Jiang, Ying,Liu, Xin,Pan, Rong,Chen, Hongping,Wang, Chen,Wang, Qinghua,Jiang, Ying,Liu, Xin.

[6]Adsorption and photocatalytic degradation of phenol over TiO2/ACF. Fan, CM,Min, YQ,Hao, XG,Sun, YP,Li, XJ,Li, FB. 2003

[7]Photocatalytic reaction kinetics model based on electrical double layer theory - II. Surface complexation model of methyl orange adsorption on TiO2 surface. Li, XJ,Li, FB,Gu, GB,Liu, S,Wang, LY,Liang, YY. 2003

[8]Adsorption and photocatalytic decomposition of roxarsone by TiO2 and its mechanism. Lu, Donglei,Wang, Wei,Yuan, Shoujun,Hu, Zhen-Hu,Ji, Feng,Wang, Wei,Yuan, Shoujun,Hu, Zhen-Hu,Chen, Tianhu. 2014

[9]Accelerated TiO2 photocatalytic degradation of Acid Orange 7 under visible light mediated by peroxymonosulfate. Chen, Xiaoyang,Wang, Weiping,Xiao, Hua,Hong, Chunlai,Zhu, Fengxiang,Yao, Yanlai,Xue, Zhiyong. 2012

[10]Infrared Spectrum Studies of Coatings under Irradiation of Sunlight and Ultraviolet. Li Li-xia,Cao Bing,Sun Yu-meng,Li Hong-yan,Xiao Qiang,Ni Xiao-hui,Yi Wen-ping,Li Li-xia,Cao Bing,Li Hong-yan,Xiao Qiang,Ni Xiao-hui,Yi Wen-ping,Sun Yu-meng. 2016

[11]Enhanced photocatalytic degradation of VOCs using Ln(3+)-TiO2 catalysts for indoor air purification. Li, FB,Li, XZ,Ao, CH,Lee, SC,Hou, MF. 2005

[12]Photocatalytic degradation of phenol in aqueous solution using TiO2/Ti thin film photocatalyst. Fan, CM,Sun, YP,Min, YQ,Hao, XG,Li, XJ,Li, FB. 2003

[13]Photocatalytic activity of neodymium ion doped TiO2 for 2-mercaptobenzothiazole degradation under visible light irradiation. Li, FB,Li, XZ,Cheah, KR. 2005

[14]Photocatalytic Degradation of Phytotoxic Substances in Waste Nutrient Solution by Various Immobilized Levels of Nano-TiO2. Qiu, Zhiping,Yang, Qichang,Liu, Wenke,Qiu, Zhiping,Yang, Qichang,Liu, Wenke. 2013

[15]Kinetic analysis and energy efficiency of phenol degradation in a plasma-photocatalysis system. Wang, Hui-juan,Chen, Xiao-yang.

作者其他论文 更多>>

微信小程序