Zhang Huaiyu, Liang Yalan, Wu Jie, Hua Qi, Wan Xue, Renneckar Scott
Advanced Renewable Materials Lab, Department of Wood Science, The University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada.
Advanced Renewable Materials Lab, Department of Wood Science, The University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada; Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China.
Int J Biol Macromol. 2025 May;308(Pt 4):142423. doi: 10.1016/j.ijbiomac.2025.142423. Epub 2025 Mar 22.
Xylan is one of the main biomass components and is considered to have the potential for environmental remediation due to its renewability, biodegradability, and biocompatibility. In this study, xylan extracted from esparto pulp was prepared as xylan nanoparticles (XNPs), which were subsequently modified to carboxylated xylan nanoparticles (CXNPs) through sequential periodate-chlorite oxidation. Characterization of CXNPs demonstrated that the modified CXNPs possessed a core-shell structure, with dicarboxylic acid xylan as the shell and xylan hydrate crystals as the core. The adsorption study revealed the CXNPs with carboxyl groups on the surface exhibited a high adsorption capacity to methylene blue (MB) at 919.6 mg/g. The adsorption mechanism analysis indicated that the adsorption process was controlled by electrostatic interactionsThese results provide a promising modification approach for the development of xylan-based adsorbent materials that can assist in environmental remediation.
木聚糖是主要的生物质成分之一，因其可再生性、生物降解性和生物相容性而被认为具有环境修复潜力。在本研究中，从西班牙草浆中提取的木聚糖被制备成木聚糖纳米颗粒（XNPs），随后通过高碘酸盐-亚氯酸盐顺序氧化将其改性为羧化木聚糖纳米颗粒（CXNPs）。对CXNPs的表征表明，改性后的CXNPs具有核壳结构，以二羧酸木聚糖为壳，木聚糖水合物晶体为核。吸附研究表明，表面带有羧基的CXNPs对亚甲基蓝（MB）具有919.6 mg/g的高吸附容量。吸附机理分析表明，吸附过程受静电相互作用控制。这些结果为开发有助于环境修复的木聚糖基吸附材料提供了一种有前景的改性方法。
