Abstract Discarded solution of graphene oxide's fabrication via Hummers' method was recycled for the synthesis of TiO2 photocatalyst on carbon fiber cloth. The composite photocatalyst exhibited a high surface area of 497 m2 g−1, and a production rate of 83.88 μmol g−1 h−1 in the photocatalytic CO2 reduction to CH4. The acidity, oxidability and complicated cation specimen of the discarded solution, which was meant to be hazardous to the environment, have been made full use of to facilitate such highly dense, 1D and anatase TiO2 nanorods on carbon fiber.

中文翻译：

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用于高表面积光催化剂的氧化石墨烯废弃溶液

摘要 回收利用 Hummers 法制备氧化石墨烯的废弃溶液，用于在碳纤维布上合成 TiO2 光催化剂。该复合光催化剂在光催化 CO2 还原为 CH4 时表现出 497 m2 g-1 的高表面积和 83.88 μmol g-1 h-1 的产率。废弃溶液的酸性、氧化性和复杂的阳离子样品对环境有害，已被充分利用以促进在碳纤维上形成如此高密度、一维和锐钛矿型 TiO2 纳米棒。