Modification of Cellulose by Esterification Crosslinking to Manipulate Its Microstructure for Enhanced Sodium Storage in Hard Carbon

Batteries, Journal Year: 2025, Volume and Issue: 11(1), P. 36 - 36

Published: Jan. 20, 2025

The active hydroxyl group of cellulose plays a crucial role in regulating the microstructure cellulose-derived hard carbon, which ultimately affects its sodium storage capacity. Through small-angle X-ray scattering (SAXS) and atomic pair distribution function (PDF) analysis, we proved that modification by esterification crosslinking can introduce more closed pores into carbonized is beneficial for promoting ion storage. Our results demonstrate optimizing conditions used cross-linking modification, capacity carbon could be increased from 254 to 348 mAh g−1, with an increase plateau 140 230 g−1. This study makes significant contribution towards establishing industrial applications carbon.

Language: Английский

Oxygen Defects Enriched Cerium Oxide Nanozyme for Sensitive Colorimetric Detection of Tannic Acid

Particle & Particle Systems Characterization, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 21, 2025

Abstract Although the application of nanozymes is widely studied, it still a huge challenge to develop facile strategy improve enzyme activity. Herein, novel nanozyme construction proposed that involves modulation surface defects on CeO 2 through controlled atmosphere under mild condition. The prepared in this study subjected thermal treatment various atmospheres, such as H ‐Ar and air, resulting formation tunable oxygen vacancies, confirmed by high‐resolution transmission electron microscopy (HRTEM), X‐ray photoelectron spectroscopy (XPS), diffraction (XRD), UV–vis characterizations. Cb‐H demonstrates peroxidase‐mimicking activity achieves excellent catalytic performance due advantageous preparation process, which results highest fraction vacancies. Therefore, colorimetric sensor constructed for fast sensitive quantitative analysis TA with good linearity range 0–2.5 µ m . This work offers strategies optimizing defect‐engineered highlights practical potential detection tannic acid (TA).

Language: Английский