秸秆/聚吡咯复合材料的制备及从水溶液中选择性除去酸性品红  

Preparation of straw/polypyrrole composite and selective removal of acid fuchsin from aqueous solution

作　　者：杨斌 申宇[1,2] 党文文 高晓峰 高磊 杨明琰 邢建宇[1,2] Yang Bin;Shen Yu;Dang Wenwen;Gao Xiaofeng;Gao Lei;Yang Mingyan;Xing Jianyu(School of Environmental Science and Engineering,Chang'an University,Xi'an 710054;Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region(Chang'an University),China Ministry of Education,Xi'an 710054)

机构地区：[1]长安大学环境科学与工程学院,西安710054 [2]长安大学旱区地下水文与生态效应教育部重点实验室,西安710054

出　　处：《化工新型材料》2020年第5期275-280,共6页New Chemical Materials

基　　金：中央高校基本科研业务费专项资金(310829161015);大学生创新创业训练计划(201710710262)。

摘　　要：将吡咯平均分散于不同秸秆废料溶液中,使用过硫酸钾为氧化剂原位氧化吡咯,复合形成秸秆原材料/聚吡咯(STRR/PPy)、酸处理的秸秆/聚吡咯(STRA/PPy)、酸酶处理的秸秆/聚吡咯(STRA/E/PPy)复合材料,并使用超景深显微镜、红外光谱对得到的材料进行形貌分析和官能团分析。染料吸附实验表明:3种复合材料对酸性品红具有专一性的吸附,其中STRR/PPy吸附效果最好。通过对吸附过程中所涉及的影响因素如温度、染料初始浓度等进行了详细考察,发现在28℃,60mg/L的酸性品红溶液中,STRR/PPy复合材料可在40min内达到吸附平衡,酸性品红去除率达到89%。The pyrrole was uniformly dispersed in the straw waste solution and oxidized in situ using potassium persulfate as an oxidant to form STRR/PPy,STRA/PPy,STRA/E/PPy composite materials.Morphological analysis and functional group analysis of obtained three composites were performed by depth-of-field digital microscope and FT-IR.Dye adsorption experiments showed that the three composites had specific adsorption on acid fuchsin.Among three composites,STRR/PPy exhibited higher adsorption efficiency.Furthermore,the factors involved in the adsorption process such as temperature,initial dye concentration were investigated.The results showed that the STRR/PPy composite could reach adsorption equilibrium within 40 min at 28℃ in 60 mg/L acid fuchsin solution,and the acid fuchsin removal efficiency was approximately 89%.

关 键 词：秸秆 聚吡咯 木质素 酸性品红 吸附 

分 类 号：X703[环境科学与工程—环境工程] TB332[一般工业技术—材料科学与工程]