Chen Yian, Xiang Zhouyang, Wang Desheng, Kang Jian, Qi Haisong
State Key Laboratory of Pulp and Paper Engineering, South China University of Technology Guangzhou 510640 China
State Key Laboratory of NBC Protection for Civilian Beijing 100191 China
RSC Adv. 2020 Jun 23;10(40):23936-23943. doi: 10.1039/d0ra04509h. eCollection 2020 Jun 19.
Environmentally friendly cellulose/GO/TiO hydrogel photocatalyst has been successfully fabricated a green, simple, and one-step method and evaluated as the photocatalyst and adsorbent for the removal of methylene blue (MB). The XRD and FTIR analysis suggested the strong interaction among cellulose, GO and TiO, resulting from the formation of hydrogen bonds. Due to the unique porous structure of cellulose hydrogel and introduction of GO, the cellulose/GO/TiO hydrogel showed superior (degradation ratio ∼ 93%) and reproducible (no significant change during the ten consecutive cycles) performance in the removal of MB under UV light. Consequently, the prepared cellulose/GO/TiO hydrogel can be applied as an eco-friendly, high-performance, reproducible, and stable photocatalyst and adsorbent for the removal of MB. This green hydrogel is a promising candidate for dye wastewater treatment. Moreover, this work is expected to extend the scope of bio-templated synthesis of other nanomaterials for various applications.
通过一种绿色、简单的一步法成功制备了环境友好型纤维素/氧化石墨烯/二氧化钛水凝胶光催化剂，并将其作为光催化剂和吸附剂用于去除亚甲基蓝（MB）。XRD和FTIR分析表明，纤维素、氧化石墨烯和二氧化钛之间存在强烈的相互作用，这是由氢键的形成导致的。由于纤维素水凝胶独特的多孔结构以及氧化石墨烯的引入，纤维素/氧化石墨烯/二氧化钛水凝胶在紫外光下对MB的去除表现出优异的性能（降解率约为93%）和可重复性（在连续十个循环中无显著变化）。因此，制备的纤维素/氧化石墨烯/二氧化钛水凝胶可作为一种环保、高性能、可重复且稳定的光催化剂和吸附剂用于去除MB。这种绿色水凝胶是染料废水处理的一个有前途的候选材料。此外，这项工作有望扩展生物模板合成其他纳米材料用于各种应用的范围。
