Bamboo is a renewable biomass resource recognized for its rapid growth. Herein, we designed a bamboo (NB)/ delignified bamboo (DB) cell wall supporting bimetal oxysulfide catalysts (bamboo-based@CuMgOS) via a facile in-situ growth method. These catalysts are easy to recover, biodegradable, and effective for the reduction of organic dyes. The results demonstrated existence of heterovalent states in the bamboo-based@CuMgOS catalysts facilitates rapid electron transfer and switching between different valence states, enhancing the catalyst's efficiency in pollutants reduction. The 20 mg modified bamboo DB@CuMgOS catalyst can completed reducing the 100 mL 20 ppm methylene blue (MB) and rhodamine B (RhB) in 6 min and 8 min, and 18 min and 24 min for unmodified bamboo NB@CuMgOS catalyst in the presence of NaBH₄, DB@CuMgOS catalyst outperformed the unmodified NB@CuMgOS catalyst, attributed to enhanced electron transport efficiency facilitated by a narrower band gap, favorable band conduction position, and increased specific surface area. Structural analysis confirmed that chemical bond was formed between CuMgOS and the bamboo cell wall, which strengthened the interface bond between heterogeneous materials. Thus, this low-cost, efficient, and environmentally friendly bamboo-based@CuMgOS exhibits promising advantages and potential for advancing water treatment applications, thereby enhancing the economic and functional value of the bamboo industry.

中文翻译：

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可生物降解的竹based@CuMgOS催化剂可在黑暗中实现有机污染物的高效催化还原


竹子是一种可再生的生物质资源，以其快速增长而著称。在此，我们设计了一种竹 （NB）/脱木素竹 （DB） 细胞壁，通过简单的原位生长方法支持双金属氧硫化物催化剂 （bamboo-based@CuMgOS）。这些催化剂易于回收、可生物降解，可有效还原有机染料。结果表明，竹based@CuMgOS催化剂中存在异价态，有利于快速电子转移和不同价态之间的切换，从而提高催化剂减少污染物的效率。在 NaBH₄ 存在下，20 mg 改性竹DB@CuMgOS催化剂可在 6 min 和 8 min 内完成 100 mL 20 ppm 亚甲蓝 （MB） 和罗丹明 B （RhB） 的还原，未改性竹NB@CuMgOS催化剂可在 18 min 和 24 min 内完成还原，DB@CuMgOS催化剂的性能优于未改性的 NB@CuMgOS 催化剂，这归因于较窄的带隙促进了电子传输效率的提高， 有利的带传导位置，并增加比表面积。结构分析证实，CuMgOS 与竹细胞壁之间形成了化学键，加强了异质材料之间的界面键。因此，这种低成本、高效且环保的竹based@CuMgOS在推进水处理应用方面显示出巨大的优势和潜力，从而提高了竹产业的经济和功能价值。