Pham Vy Ngoc, Lee Sangyeob, Hoang Dung Thanh, Baik Jaeyoon, Kim Hyun Sung, Lee Hangil
Department of Chemistry, Sookmyung Women's University, Seoul 04310, Republic of Korea.
Department of Chemistry, Pukyong National University, Busan 48513, Republic of Korea.
Inorg Chem. 2023 Aug 14;62(32):12913-12919. doi: 10.1021/acs.inorgchem.3c01607. Epub 2023 Aug 2.
This study focuses on the synthesis and investigation of ZnInS nanoparticle (NP) photocatalysts treated with different sulfur sources, thioacetamide (TAA), or thiourea (TU), to explore their wavelength-dependent photocatalytic activity. The research aims to understand the impact of Zn vacancies present on the surface of ZnInS NPs. The investigation involves electron spin resonance and in situ X-ray photoelectron spectroscopy to study the photocatalytic activity of ZnInS-TU and ZnInS-TAA NPs, following the characterization of surface morphology and electronic properties using high-resolution transmission electron microscopy and X-ray diffraction. Additionally, the study delves into the wavelength-dependent photocatalytic degradation (PCD) activity of the ZnInS NPs using 2,5-hydroxymethylfurfural (HMF) across a wide range. Notably, the selective oxidation of HMF using ZnInS-TU NPs resulted in the formation of 2,5-furandicarboxylic acid (FDCA) via 2,5-diformylfuran, with an efficiency exceeding 40% over the broad wavelength range. The research demonstrates that the irradiation wavelength for PCD is influenced by the number of defect structures introduced into the ZnInS NPs through the sulfur source.
本研究聚焦于用不同硫源（硫代乙酰胺（TAA）或硫脲（TU））处理的ZnInS纳米颗粒（NP）光催化剂的合成与研究，以探索其波长依赖性光催化活性。该研究旨在了解ZnInS NPs表面存在的锌空位的影响。研究包括电子自旋共振和原位X射线光电子能谱，以研究ZnInS-TU和ZnInS-TAA NPs的光催化活性，此前已使用高分辨率透射电子显微镜和X射线衍射对表面形态和电子性质进行了表征。此外，该研究深入探讨了ZnInS NPs在很宽范围内使用2,5-羟甲基糠醛（HMF）的波长依赖性光催化降解（PCD）活性。值得注意的是，使用ZnInS-TU NPs对HMF进行选择性氧化，通过2,5-二甲酰基呋喃生成了2,5-呋喃二甲酸（FDCA），在宽波长范围内效率超过40%。该研究表明，PCD的辐照波长受通过硫源引入到ZnInS NPs中的缺陷结构数量的影响。
