Publications by authors named "Xianqiang Peng"
Rearrangement of GO nanosheets with inner and outer forces under high-speed spin for supercapacitor.
J Colloid Interface Sci
August 2023
Article Synopsis
- - The study focuses on improving self-standing graphene membranes for use as electrodes in supercapacitors, which have challenges in maintaining uniformity and performance.
- - A novel method combines metal cation chelation and high-speed spinning to create uniform interlayer channels in graphene oxide membranes, significantly enhancing their electrochemical properties.
- - The resulting iron cross-linked graphene oxide membranes show impressive performance metrics, including a high specific capacitance of 427 F g and excellent longevity after 20,000 cycles, indicating great potential for applications in energy storage and other fields.
Chemical composition and pollutant sorption of biochar-derived organic matter fractions (BDOMs) are critical for understanding the long-term environmental significance of biochar. Phenanthrene (PHE) sorption by the humic acid-like (HAL) fractions isolated from plant straw- (PLABs) and animal manure-based (ANIBs) biochars, and the residue materials (RES) after HAL extraction was investigated. The HAL fraction comprised approximately 50% of organic carbon (OC) of the original biochars.
View Article and Find Full Text PDFThe HNO treatment was used to chemically modify the biochars produced from wheat straw (WH) and cow manure for U(VI) removal from aqueous solution. Macroscopic experiments proved that the enrichment of U(VI) on the biochars was regulated by surface complexation and electrostatic interactions. FTIR and XPS analyses confirmed that the highly efficient adsorption of U(VI) was due to the carboxyl groups on the biochar surfaces.
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