APG水溶液中苏丹红Ⅰ的溶解性能及光催化降解  

Solubility and photocatalytic degradation of SudanⅠin APG aqueous solution

作　　者：高大响[1] 杨鹤同[1] GAO Daxiang;YANG Hetong(Biological Engineering Technology Center,Jiangsu Vocational College of Agriculture and Forestry,Jurong 212400,China)

机构地区：[1]江苏农林职业技术学院生物工程技术中心,江苏句容212400

出　　处：《化工环保》2024年第6期850-858,共9页Environmental Protection of Chemical Industry

基　　金：句容市科技项目(ZA42201)。

摘　　要：以烷基糖苷(APG)水溶液作为苏丹红Ⅰ(SDⅠ)的溶剂,考察了SDⅠ溶解的影响因素,并探讨了利用制备的Ag-Ag_(2)O-AgCl/氧化石墨烯-海藻酸钙复合光催化材料,在太阳光下光催化降解SDⅠ的性能和机理。SDⅠ在APG水溶液(体积分数0.7%)中经超声(80 W,10 min)和加热(100℃,30 min)处理后,表现出良好的溶解性能。SDⅠ的APG水溶液在484 nm处的可见光特征吸收峰受APG干扰较小,可作为其检测依据。在SDⅠ初始质量浓度为10 mg/L、初始pH为4、反应温度为30℃的条件下,经太阳光照射60 min后,SDⅠ可被完全去除,且光催化降解过程符合准一级反应动力学方程。复合光催化材料在紫外和可见光区对SDⅠ具有较强的吸收能力。超氧自由基和光生空穴是降解SDⅠ的主要活性物种。Alkyl polyglucoside(APG)aqueous solution was used as the solvent of SudanⅠ(SDⅠ).The factors affecting the dissolution of SDⅠwere investigated,and the performance and mechanism of photocatalytic degradation of SDⅠunder sunlight by the prepared Ag-Ag_(2)O-AgCl/GO-CA composite photocatalytic material were discussed.SDⅠexhibits good solubility in APG aqueous solution(volume fraction 0.7%)after ultrasonic(80 W)treatment for 10 min and heating(100℃)treatment for 30 min.The visible light characteristic absorption peak of APG aqueous solution of SDⅠis less affected by APG at 484 nm,which can be used as the basis for its detection.Under the conditions of initial concentration of 10 mg/L,initial pH 4,and reaction temperature of 30℃,SDⅠcan be completely removed after 60 min of sunlight irradiation.The photocatalytic degradation process conforms to the pseudo-first-order reaction kinetic equation.The composite photocatalytic material has a strong absorption capacity for SDⅠin the ultraviolet and visible light regions.Superoxide radicals(·O_(2)^(-))and photo-generated electronholes(h+)are the main active species for SDⅠdegradation.

关 键 词：苏丹红Ⅰ 烷基糖苷(APG) Ag-Ag_(2)O-AgCl 光催化材料 

分 类 号：X703[环境科学与工程—环境工程]