Effective photocatalytic degradation and physical adsorption of methylene blue using cellulose/GO/TiO 2 hydrogels.

Authors :: Chen Y
Xiang Z
Wang D
Kang J
Qi H
Source :: RSC advances [RSC Adv] 2020 Jun 23; Vol. 10 (40), pp. 23936-23943. Date of Electronic Publication: 2020 Jun 23 (Print Publication: 2020).
Publication Year :: 2020
Abstract: Environmentally friendly cellulose/GO/TiO <subscript>2</subscript> hydrogel photocatalyst has been successfully fabricated via 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 <subscript>2</subscript> , resulting from the formation of hydrogen bonds. Due to the unique porous structure of cellulose hydrogel and introduction of GO, the cellulose/GO/TiO <subscript>2</subscript> 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 <subscript>2</subscript> 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.<br />Competing Interests: There are no conflicts to declare.<br /> (This journal is © The Royal Society of Chemistry.)

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