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AgBr-decorated g-C3N4 hollow microtube with solar light-enhanced catalytic performance for the reduction of aromatic nitro compounds
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DOI：10.1016/j.surfin.2026.109533.png)
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Abstract
En 中文
Aromatic amines serve as a kind of critical intermediate for the production of pharmaceuticals, dyes, pigments, agrochemicals, and various fine chemicals. Therefore, developing efficient and environmentally synthetic routes is of profound significance in both industrial manufacturing and fundamental organic synthesis. Among them, the reduction of aromatic nitro compounds by NaBH4 has been an important research topic in organic synthesis due to mild conditions, high selectivity, low energy consumption, and high safety. In this paper, we first synthesized hollow tubular graphite-phase carbon nitride (HT-CN) by facile hydrothermal and chemical deposition methods. Subsequently, via chemical deposition and high-temperature calcination, a kind of AgBr-decorated hollow tubular graphite-phase carbon nitride (AgBr-HT-CN) was obtained. On the basis, selecting the classical reduction of 4-nitrophenol(4-NP) to 4-aminophenol(4-AP) as a model reaction, the catalytic reduction performance of the AgBr-HT-CN was investigated. Research results indicated that the AgBr-HT-CN showed excellent catalytic reduction activity with good functional group tolerance. Especially, solar light irradiation can significantly enhance the catalytic activity of the AgBr-HT-CN toward the reduction of aromatic nitro compounds. Compared with dark conditions, light irradiation enhanced the catalytic reduction efficiency up to 8 times for certain compound. Moreover, the AgBr-HT-CN exhibited high stability and recyclability. After seven cycles of reuse, it still maintained catalytic activity over 95%. Finally, a plausible light-enhanced catalytic reduction mechanism was proposed.
Keywords:
AgBr-decorated g-C3N4
hollow microtube
solar light-enhanced catalysis
aromatic nitro compounds reduction
catalytic performance
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