Photocatalytic degradation of organophosphorous insecticides in aqueous semiconductor suspensions

IF 11.4 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Water Research Pub Date : 1990-11-01 DOI:10.1016/0043-1354(90)90162-Y

Kenji Harada, Teruaki Hisanaga, Keiichi Tanaka

引用次数: 95

Abstract

Two organophosphorous insecticides, dimethyl-2,2-dichlorovinyl phosphate (DDVP) and dimethyl-2,2,2-trichloro-l-hydroxyethyl phosphonate (DEP), were degraded in the presence of suspended TiO₂ by illumination with a super-high pressure mercury lamp or by exposure to sunlight. Pt-loading to TiO₂ enhanced the degradation rates 4.5- and 6-fold for DDVP and DEP, respectively. The addition of H₂O₂ to the suspension also enhanced the rates 10- and 2-fold for the former and latter, respectively. The final degradation products were Cl⁻, PO³⁻₄, H⁺ and CO₂, and one of the intermediates was formaldehyde.

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半导体悬浮液中有机磷杀虫剂的光催化降解

研究了两种有机磷杀虫剂，二甲基-2,2,2-三氯-l-羟乙基膦酸盐(DEP)和二甲基-2,2,2-三氯-l-羟乙基膦酸盐(DDVP)在悬浮TiO2存在下，通过超高压汞灯或阳光照射降解。pt负载TiO2对DDVP和DEP的降解率分别提高了4.5倍和6倍。在悬浮液中加入H2O2也使前者和后者的速率分别提高了10倍和2倍。最终降解产物为Cl−、PO3−4、H+和CO2，中间产物之一为甲醛。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Water Research 环境科学-工程：环境

CiteScore

20.80

自引率

9.40%

发文量

1307

审稿时长

38 days

期刊介绍： Water Research, along with its open access companion journal Water Research X, serves as a platform for publishing original research papers covering various aspects of the science and technology related to the anthropogenic water cycle, water quality, and its management worldwide. The audience targeted by the journal comprises biologists, chemical engineers, chemists, civil engineers, environmental engineers, limnologists, and microbiologists. The scope of the journal include: •Treatment processes for water and wastewaters (municipal, agricultural, industrial, and on-site treatment), including resource recovery and residuals management; •Urban hydrology including sewer systems, stormwater management, and green infrastructure; •Drinking water treatment and distribution; •Potable and non-potable water reuse; •Sanitation, public health, and risk assessment; •Anaerobic digestion, solid and hazardous waste management, including source characterization and the effects and control of leachates and gaseous emissions; •Contaminants (chemical, microbial, anthropogenic particles such as nanoparticles or microplastics) and related water quality sensing, monitoring, fate, and assessment; •Anthropogenic impacts on inland, tidal, coastal and urban waters, focusing on surface and ground waters, and point and non-point sources of pollution; •Environmental restoration, linked to surface water, groundwater and groundwater remediation; •Analysis of the interfaces between sediments and water, and between water and atmosphere, focusing specifically on anthropogenic impacts; •Mathematical modelling, systems analysis, machine learning, and beneficial use of big data related to the anthropogenic water cycle; •Socio-economic, policy, and regulations studies.