碳布负载多孔CdS纳米棒光催化剂的制备及其高效Cr(‍Ⅵ‍)还原光催化活性

李恒超; 王文广; 吴梁鹏; 简思源; 龙诗敏; 郭禹希

doi:10.20056/j.cnki.ZNMDZK.20250744

中南民族大学学报（自然科学版） ›› 2025, Vol. 44 ›› Issue (01) : 9 -21. DOI: 10.20056/j.cnki.ZNMDZK.20250744

化学、材料与资源环境科学

碳布负载多孔CdS纳米棒光催化剂的制备及其高效Cr(‍Ⅵ‍)还原光催化活性

李恒超 ¹ ,
王文广 ¹ ,
吴梁鹏 ^b ,
简思源 ¹ ,
龙诗敏 ¹ ,
郭禹希 ^a

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Preparation of carbon fiber cloth supported porous CdS nanorods with excellent photocatalytic activity for Cr(‍Ⅵ‍) reduction

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摘要

利用可见光响应光催化剂去除废水中重金属离子的技术已受到广泛关注.然而，开发具有高光催化活性和易回收利用的光催化材料仍然是一个挑战.以AgVO₃纳米线为模板，采用两步水热法制备了易回收的碳布负载多孔CdS纳米棒光催化剂.结果表明：在可见光照射下，碳布负载多孔CdS纳米棒对Cr（‍Ⅵ‍）表现出增强的光催化还原活性，其表观速率常数是直接在碳布上负载的CdS纳米球的1.65倍.此外，碳布负载多孔CdS纳米棒易于分离和重复使用，这为开发高效和可循环利用的光催化剂并应用于处理废水提供了新的思路.

Abstract

The use of visible-light responsive photocatalysts for removing heavy metal ions in wastewater has received great attention. However， the development of photocatalysts with high activity and recyclability remains a huge challenge. Herein， a recyclable carbon fiber cloth-supported porous CdS nanorod photocatalyst was fabricated by a two-step hydrothermal treatment using AgVO₃ nanowires as templates. The results indicated that under visible-light illumination， the carbon cloth-supported porous CdS nanorods showed improved photocatalytic activity for the reduction of Cr（‍Ⅵ‍）， with an apparent rate constant exceeding that of carbon cloth-supported CdS nanospheres by a factor of 1.65 times. Moreover， the carbon cloth-supported porous CdS nanorods can be easily separated and be reused. This brings a new perspective for developing photocatalysts with high efficiency and recyclability for wastewater treatment.