瓜子壳生物炭的制备及其活化PMS降解有机染料的研究  

The preparation of biochar based on melon seed shell for activation of peroxymonosulfate to degrade organic dyestuff

作　　者：王伽宁 曹玥 孔令慧 葛菲 吴沁薇 郭晓静 郎万中 WANG Jianing;CAO Yue;KONG Linghui;GE Fei;WU Qinwei;GUO Xiaojing;LANG Wanzhong(College of Chemistry and Materials Science,Shanghai Normal University,Shanghai 200234,China)

机构地区：[1]上海师范大学化学与材料科学学院,上海200234

出　　处：《上海师范大学学报（自然科学版）》2021年第4期461-469,共9页Journal of Shanghai Normal University(Natural Sciences)

基　　金：“111”光化学和能源材料创新与人才计划(D18020);绿色能源化工上海工程研究中心项目(18DZ2254200);国家自然科学基金面上项目(21676291);大学生创新创业训练计划项目(202110270006)。

摘　　要：近年来,生物炭材料作为无机非金属催化剂的应用得到了广泛关注.以瓜子壳为原料,于800℃和惰性气氛下,热解制备瓜子壳生物炭(MSAC).利用扫描电子显微镜(SEM)、孔隙度和比表面分析仪、拉曼光谱对MSAC的理化性质进行了表征.考察了MSAC对有机染料罗丹明B(RhB)、孔雀绿(MGO)、甲基橙(MO)、结晶紫(CV)的吸附性能,以及其活化过一硫酸盐(PMS)氧化降解有机染料的催化降解效果.结果表明:MSAC对有机染料的吸附去除率远低于其活化PMS对有机染料的去除率,说明在氧化体系中降解作用对有机染料的去除起主要贡献.与商用的生物炭相比,MSAC对有机染料的吸附性能不佳,但是其表面缺陷度较高,能够有效活化PMS降解有机污染物.In recent years,the application of biochar materials as metal-free catalysts has attracted widespread attention.In this paper,the biochar based on melon seed shell was prepared by the pyrolysis under inert atmosphere at 800℃melon seed shell activated catalysts(MSAC).The physicochemical properties of MSAC were characterized by scanning electron microscopy(SEM),low temperature N2 adsorption/desorption isotherm,and Raman spectroscopy.The adsorption capacity and peroxymonosulfate(PMS)activation ability of MSAC for the removal of rhodamine(RhB),malachite green(MGO),methyl orange(MO),and crystal violet(CV)were investigated.The removal result in the MSAC/PMS system far exceeded the adsorption capacity of MSAC in the absence of PMS,suggesting that the organic dyestuff was largely removed as a result of degradation in the MSAC/PMS system.Compared with commercial biochar,MSAC showed a lower adsorption capacity.While,the defect degree of MSAC is high,and it can effectively activate PMS to degrade organic dyestuff.

关 键 词：瓜子壳生物炭(MSAC) 吸附 氧化降解 有机染料 

分 类 号：O643.32[理学—物理化学]