Biomass‐Derived Porous Carbon as an Enzyme Mimic for Colorimetric Detection of Ascorbic Acid

Author:

Shi Yunxia1,Ma Sumei1,Yan Wei2,Kong Xia1,Tian Xiuxiu1,Liang Shuxin1,Lu Guang1ORCID,Yang Jing1,Liu Qingyun1

Affiliation:

1. College of Chemical and Biological Engineering Shandong University of Science and Technology Qingdao 266590 China

2. School of Materials Science and Engineering China University of Petroleum (East China) Qingdao 266580 China

Abstract

AbstractPowder porous carbon (PPC) has been fabricated by using corncob, a by‐product of corn production, through a simple calcination process. The relevant carbon material retains an intrinsic porous structure and has a large specific surface area of 577.15 m2/g. The oxidase‐like and peroxidase‐like activities of porous carbon based on corncob are explored in the pH range of 2.0‐8.0, and temperature between 15 and 60 °C, and are optimal at physiological temperature. According to fluorescence and scavenger measurements, the catalytic mechanism of porous carbon with semi‐graphitized structure is from the active species including ⋅OH radicals and ⋅O2 radicals. Taking advantages of catalytic performance, a colorimetric biosensor is designed for the determination of AA with a linear range of 8 to 90 μM and a limit of detection (LOD) of 2.65 μM (S/N=3). The result proves a sustainable and environment friendly route to establish a biosensing system with porous carbon as high‐performance peroxidase mimetic.

Funder

National Natural Science Foundation of China

Natural Science Foundation of Shandong Province

Publisher

Wiley

Subject

Materials Chemistry,Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment,Biomaterials

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