Nguyen Loan Thi To, Duong Anh Thi Tu, Bui Nguyen Duc, Ngo Viet Thi Mai, Nguyen Hai Quang, Nguyen Hang Thi Thuy, Tran Giang Thanh, Tran Thuan Van
Faculty of Chemistry, Thai Nguyen University of Education Thai Nguyen 240000 Vietnam.
Faculty of Automotive and Power Machinery Engineering, Thai Nguyen University of Technology Thai Nguyen 24000 Vietnam.
Nanoscale Adv. 2024 Dec 5;7(2):536-548. doi: 10.1039/d4na00694a. eCollection 2025 Jan 14.
Water pollution from dyes in wastewater is a critical global issue, as these stable organic dyes resist biodegradation, posing serious threats to aquatic ecosystems. To address this situation, advanced photocatalysts have been developed. Here, NiFeO/g-CN was synthesized for the photocatalytic degradation of Rhodamine B (RhB) dye in the presence of HO and visible light. Physicochemical analysis results showed NiFeO nanoparticles dispersed in the g-CN matrix, with an upward trend in the saturation magnetization of CNF as NiFeO content rose. The surface area of CNF30 was 62.3 m g, outperforming both NiFeO (23.2 m g) and g-CN (48.5 m g). NiFeO/g-CN could be reused up to four cycles, and efficiently catalyzed the degradation of nearly 98% RhB dye, showing a decreased rate of up to 95% COD. Through scavenger studies, the main role of ˙OH was demonstrated. Therefore, highly efficient and recyclable NiFeO/g-CN can be a potential photocatalyst for degradation of dyes.
废水中染料造成的水污染是一个严峻的全球性问题，因为这些稳定的有机染料难以生物降解，对水生生态系统构成严重威胁。为应对这种情况，人们开发了先进的光催化剂。在此，合成了NiFeO/g-CN，用于在HO和可见光存在下光催化降解罗丹明B（RhB）染料。物理化学分析结果表明，NiFeO纳米颗粒分散在g-CN基质中，随着NiFeO含量的增加，CNF的饱和磁化强度呈上升趋势。CNF30的表面积为62.3 m²/g，优于NiFeO（23.2 m²/g）和g-CN（48.5 m²/g）。NiFeO/g-CN可重复使用多达四个循环，并能有效催化降解近98%的RhB染料，化学需氧量（COD）去除率高达95%。通过清除剂研究，证明了˙OH的主要作用。因此，高效且可回收的NiFeO/g-CN可能是一种潜在的染料降解光催化剂。
