Urgently reveal longly hidden toxicant in a familiar fabrication process of biomass-derived environment carbon material  

作　　者：Chao Jia Jiewen Luo Jiajun Fan James H.Clark Shicheng Zhang Xiangdong Zhu 

机构地区：[1]Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention(LAP3),Department of Environmental Science and Engineering,Fudan University,Shanghai 200433,China [2]Green Chemistry Centre of Excellence,Department of Chemistry,University of York,York YO105DD,United Kingdom [3]Shanghai Institute of Pollution Control and Ecological Security,Shanghai 200092,China [4]Shanghai Technical Service Platform for Pollution Control and Resource Utilization of Organic Wastes,Shanghai200438,China

出　　处：《Journal of Environmental Sciences》2021年第2期250-256,共7页环境科学学报（英文版）

基　　金：the National Natural Science Foundation of China(No.21876030)。

摘　　要：Biomass-derived N-doped carbon(BNC)is an important environmental material and widely used in the fields of water purification and soil remediation.However,the toxicant in the commonly used synthesis process of BNC materials have been largely ignored.Herein,we firstly report the presence of a highly toxic by-product(KCN)in the activation process of BNC materials consequential of the carbothermal reduction reaction.Because this carbothermal reduction reaction also regulates the N-doping and pore development of BNC materials,the KCN content directly relates with the properties of BNC material properties.Accordingly,a high KCN content(-611 mg)can occur in the production process of per g BNC material with high specific surface area(-3600 m^2/g).Because the application performance of BNC material is determined by the surface area and available N doping,therefore,production of a BNC material with high performance entails high risk.Undoubtedly,this study proves a completely new risk recognition on a familiar synthesis process of biomass-based material.And,strict protective device should be taken in fabrication process of biomass-derived carbon material.

关 键 词：BIOMASS Biomass based N-doped carbon Carbothermal reduction reaction Pore Toxic by-product 

分 类 号：X506[环境科学与工程—环境工程]