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

TY - JOUR

T1 - Urgently reveal longly hidden toxicant in a familiar fabrication process of biomass-derived environment carbon material

AU - Jia, Chao

AU - Luo, Jiewen

AU - Fan, Jiajun

AU - Clark, James H.

AU - Zhang, Shicheng

AU - Zhu, Xiangdong

N1 - © 2020 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy.

PY - 2021/2

Y1 - 2021/2

N2 - 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 m2/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.

AB - 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 m2/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.

KW - Biomass

KW - Biomass based N-doped carbon

KW - Carbothermal reduction reaction

KW - Pore

KW - Toxic by-product

UR - http://www.scopus.com/inward/record.url?scp=85089153420&partnerID=8YFLogxK

U2 - 10.1016/j.jes.2020.08.001

DO - 10.1016/j.jes.2020.08.001

M3 - Article

AN - SCOPUS:85089153420

SN - 1001-0742

VL - 100

SP - 250

EP - 256

JO - Journal of Environmental Sciences (China)

JF - Journal of Environmental Sciences (China)

ER -