石墨相氮化碳纳米片负载胱氨酸醌的合成、表征及其对痕量Cd^(2+)和Pb^(2+)的去除  

Synthesis and characterization of graphite phase C_(3)N_(4) nanosheets loaded cystinine quinone and its removal on trace Cd^(2+) and Pb^(2+)

作　　者：杨田丽 贺任 王文磊[1,2] 郭琳 李音 陈明 肖红波[1,2] 胡云楚[1,2] YANG Tianli;HE Ren;WANG Wenlei;GUO Lin;LI Yin;CHEN Ming;XIAO Hongbo;HU Yunchu(College of Science,Central South University of Forestry and Technology,Changsha Hunan 410002;Institute for Chemical Disposal and Utilization of Hazardous Wastes,Central South University of Forestry and Technology,Changsha Hunan 410002;Changsha Hazardous Waste Disposal Center,Changsha Hunan 410213)

机构地区：[1]中南林业科技大学理学院,湖南长沙410002 [2]中南林业科技大学危险废物化学处置与利用研究所,湖南长沙410002 [3]长沙危险废物处置中心,湖南长沙410213

出　　处：《环境污染与防治》2021年第11期1371-1373,共3页Environmental Pollution & Control

基　　金：国家自然科学基金青年科学基金项目(No.21607176);湖南省自然科学基金资助项目(No.2017JJ3516);长沙市杰出青年英才培养计划(No.kq2009061);中南林业科技大学研究生科技创新基金资助项目(No.CX20192023)。

摘　　要：制备自组装聚合物——石墨相氮化碳(g-C_(3)N_(4))纳米片负载胱氨酸醌(简写为胱氨酸醌/g-C_(3)N_(4)),采用扫描电子显微镜分析其表面形貌和微观形态,并考察该自组装聚合物对Cd^(2+)和Pb^(2+)的去除效果。结果表明:(1)层叠结构增加了胱氨酸醌/g-C_(3)N_(4)的比表面积,为重金属离子的吸附提供了更多的活性位点。(2)Cd^(2+)和Pb^(2+)的去除率随着胱氨酸醌/g-C_(3)N_(4)中g-C_(3)N_(4)纳米片用量的增加而提升。5 min时,胱氨酸醌/g-C_(3)N_(4)-15(15 mg g-C_(3)N_(4)纳米片负载5 mg胱氨酸醌)对Cd^(2+)和Pb^(2+)的去除率均可达到90%,比胱氨酸醌分别提高了50百分点、24百分点。(3)胱氨酸醌/g-C_(3)N_(4)对Cd^(2+)和Pb^(2+)可实现同步去除。Self-assembled polymer(graphite phase C_(3)N_(4) nanosheets loaded cystinine quinone(abbreviated as cystine quinone/g-C_(3)N_(4)))was prepared.The surface morphology and micro morphology were analyzed by scanning electron microscope,and the removal effect of the self-assembled polymer on Cd^(2+)and Pb^(2+)was investigated.The results showed that:(1)the specific surface area of cystine quinone/g-C_(3)N_(4) was increased by the laminated structure,and more active sites for the adsorption of heavy metal ions were provided.(2)The removal rates of Cd^(2+)and Pb^(2+)increased with the increase of the amount of graphite phase C_(3)N_(4) nanosheets.At 5 min,the removal rates of Cd^(2+)and Pb^(2+)by cystine quinone/g-C_(3)N_(4)-15(15 graphite phase C_(3)N_(4) nanosheets loaded 5 mg cystine quinone)were 90%,which were 50 percentage points and 24 percentage points higher than cystine quinone respectively.(3)The simultaneous removal of Cd^(2+)and Pb^(2+)could be achieved by cystine quinone/g-C_(3)N_(4).

关 键 词：胱氨酸醌 石墨相氮化碳纳米片 Cd^(2+) Pb^(2+) 

分 类 号：TQ317[化学工程—高聚物工业] X703[环境科学与工程—环境工程]