CNT/Ti_(3)C_(2)T_(X)基径流式复合过滤膜对罗丹明B电化学氧化降解性能的影响  

The effects of CNT/Ti_(3)C_(2)T_(X)based radial flow composite membrane on electrochemical oxidation degradation of Rhodamine B

作　　者：张志明 路涛 徐汝清 孟鑫 王剑 张鹏 ZHANG Zhi-ming;LU Tao;XU Ru-qing;MENG Xin;WANG Jian;ZHANG Peng*(College of Bioresources Chemical and Materials Engineering,Shaanxi University of Science&Technology,Xi′an 710021,China;Laixi Natural Resources Bureau of Shandong Province,Laixi 266600,China;Xi′an Brino Electromechanical Technology Co.,Ltd.,Xi′an 710025,China;Zhejiang Zhanyu New Material Co.,Ltd.,Quzhou 324400,China)

机构地区：[1]陕西科技大学轻工科学与工程学院,陕西西安710021 [2]山东省莱西市自然资源局,山东莱西266600 [3]西安百瑞诺机电科技有限公司,陕西西安710025 [4]浙江展宇新材料有限公司,浙江衢州324400

出　　处：《陕西科技大学学报》2023年第5期32-41,共10页Journal of Shaanxi University of Science & Technology

基　　金：国家自然科学基金项目(22208203);陕西省科技厅自然科学基础研究计划项目(2022JQ-153);中国博士后科学基金第67批面上资助项目(2020M673327);陕西省咸阳市重点研发计划项目(2020K02-30)。

摘　　要：电催化过滤膜分离是处理难降解有机废水的新兴技术之一,利用负压真空抽滤的方法制备了新型CNT/Ti_(3)C_(2)T_(X)复合过滤膜电极,并详细探究了CNT与Ti_(3)C_(2)T_(X)掺比、初始浓度、流速、电流密度和初始pH对CNT/Ti_(3)C_(2)T_(X)基复合膜连续径流式过滤降解罗丹明B(RhB)的影响.实验表明,在CNT/Ti_(3)C_(2)T_(X)掺杂比为10.0%,RhB初始浓度为20 mg/mL,流速为1.0 mL/min,电流密度为0.1 mA/cm 2的中性反应条件下,对RhB的降解效率均达到97.0%以上,且重复使用4次后没有明显下降.所制备的CNT/Ti_(3)C_(2)T_(X)基连续径流式过滤膜可以有效利用膜表面吸附作用与电化学降解之间的协同作用,为有机污染物的降解提供更多的固-液界面反应时间,从而有效提高电催化过滤膜的降解效率.Electrocatalytic filtration membrane separation is an emerging technology for treating refractory organic wastewater.In this paper,a new type of CNT/Ti_(3)C_(2)T_(X)composite filter membrane electrode was first prepared by the pressure vacuum filtration method.The effects of the ratio of CNT and Ti_(3)C_(2)T_(X),initial concentration,flow rate,current density and initial pH on the degradation of Rhodamine B(Rh B)by CNT/Ti_(3)C_(2)T_(X)-based composite membrane continuous filtration membrane were explored in detail.Experiments showed that the degradation performance of the CNT/Ti_(3)C_(2)T_(X)composite membrane filtration was the best under the neutral reaction conditions of CNT/Ti_(3)C_(2)T_(X)doping ratio of 10.0%,RhB initial concentration of 20 mg/mL,the flow rate of 1.0 mL/min,and current density of 0.1 mA/cm 2.And the degradation efficiency of RhB coud be reached more than 97.0%.Moreover,there was no noticeable decline after repeated use for 4 times,showing good practical stability.The as-prepared CNT/Ti_(3)C_(2)T_(X)-based continuous radial-flow filtration membrane can synergise membrane surface adsorption and electrochemical degradation.It provided more solid-liquid interface reaction time for the degradation of organic pollutants,thereby effectively improving the degradation efficiency of the electrocatalytic filter membrane.

关 键 词：膜处理 Ti_(3)C_(2)T_(X) 罗丹明B 高级氧化 降解 

分 类 号：X791[环境科学与工程—环境工程]