酸改性玉米秸秆碳前驱体吸附亚甲基蓝阳离子染料性能研究  

Study on Adsorption Methylene Blue Cationic Dyeby AcidModified Carbon Precursor of Corn Straw

作　　者：吴磊 徐英甜 乐承知 司杨 WU Lei;XU Ying-tian;LE Cheng-zhi;SI Yang(New Energy(Photovoltaic)Industry Research Center,Qinghai University,Qinghai Xining 810016;State Key Laboratory of Plateau Ecology and Agriculture,Qinghai University,Qinghai Xining 810016,China)

机构地区：[1]青海大学新能源光伏产业研究中心,青海西宁810016 [2]青海大学省部共建三江源生态与高原农牧业国家重点实验室,青海西宁810016

出　　处：《广州化工》2022年第22期72-76,共5页GuangZhou Chemical Industry

基　　金：青海省科技厅应用基础研究(No:2019-ZJ-7027);青海大学省部共建三江源生态与高原农牧业国家重点实验室自主课题(No:2020-ZZ-05)。

摘　　要：采用低廉易得的玉米秸秆为碳源,盐酸、硫酸和磷酸改性后用于亚甲基蓝的吸附。不同温度吸附时,硫酸改性碳前驱体的吸附性能优于其他秸秆碳材料。形貌表征和表面官能团表征说明丰富的孔结构、羟基和羧基的引入及较强的氧化性是其吸附性能提升的原因。当pH为10,吸附时间为120 min时,硫酸改性吸附剂对亚甲基蓝的吸附率高达91%。该碳前驱体在吸附水中阳离子染料方面具有实践意义。The corn straw biomass carbon material with low cost and easy to obtain was used as carbon source which was modified with hydrochloric acid,sulfuric acid and phosphoric acid for methylene blue adsorption.After adsorption experiments at different temperatures,the adsorption performance of sulphuric acid modified carbon precursor was better than other straw carbon materials.The characterization of morphology and surface functional groups illustrated that abundant porous structure,introduction of hydroxyl and carboxyl groups and strong oxidation of the acidified carbon materials were the reasons for the improvement of the adsorption properties.When pH was 10 and adsorption time was 120 min,the adsorption rate of methylene blue was up to 91%.The carbon precursor has practical significance in adsorbing cationic dyes from water.

关 键 词：生物质碳 碳前驱体 酸 吸附 亚甲基蓝 

分 类 号：O636.9[理学—高分子化学]