Preparation of N-Doped Nanoporous Carbon from Crude Biomass and its Electrochemical Activity

Abstract

H 2 O 2 detection plays an important role in electrochemical sensing since H 2 O 2 often acts as an intermediate product or regulator in various reactions. Nanoporous carbon (NPC) can be a potential candidate in electrochemical sensing because of its high speci¯c surface area, various pore sizes and structures. In this work, we reported the preparation of N-doped NPC derived from the highly available, accessible and recyclable plant Typha orientalis. The products have high surface area (highest surface areas of 1439.0 m 2 g À1 Þ and a number of nanopores. Highest content of nitrogen atom in the product is 3.66 at.%). Typical product exhibits high electrocatalytic activity for reduction of hydrogen peroxide. The product may have further use for glucose biosensing. We developed a low-cost, simple and readily scalable approach to prepare the excellent carbon electrocatalyst directly from crude biomass. In addition, because of high surface area and doping of nitrogen element, the product may¯nd broad applications in the¯elds of supercapacitors, lithium-ion batteries, gas uptake and so on.

Ni-Based Composites from Chitosan Biopolymer a One-Step Synthesis for Oxygen Evolution Reaction

“…Herein, we considered the sustainable utilization of chitosan (CS), a derivative of the waste products of the crabbing and shrimp canning industries, in combination with graphene or melamine for the preparation of high-value N-doped carbon materials [24][25][26]. Chitosan is a renewable polymer, naturally abundant and low cost, which has outstanding properties such as biodegradability, non-toxicity, and excellent stability [23,[26][27][28].…”