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Effect of silver doping on the properties and photocatalytic performance of In2S3 nanoparticles
Journal of Molecular Liquids ( IF 5.3 ) Pub Date : 2021-09-23 , DOI: 10.1016/j.molliq.2021.117649
Salh Alhammadi 1 , Bo Gyeong Mun 1 , Sreedevi Gedi 1 , Vasudeva Reddy Minnam Reddy 1 , Abdelrahman M. Rabie 1, 2 , Mostafa S. Sayed 1, 2 , Jae-Jin Shim 1 , Hyeonwook Park 1 , Woo Kyoung Kim 1
Affiliation  

The effect of Ag doping on the properties and photocatalytic activity of In2S3 nanoparticles (NPs) was investigated. Pure In2S3 and Ag-doped In2S3 NPs were prepared using a conventional chemical solution process. Different Ag concentrations were used to determine the optimal doping concentration. X-ray diffraction (XRD) results indicated that all the prepared NPs had a polycrystalline cubic crystal structure. In addition, the XRD peaks of the Ag-doped In2S3 NPs showed a slight shift to lower 2θ values than those of the pure In2S3 NPs, indicating the successful incorporation of Ag into the In2S3 lattice. The chemical bonding states and composition of the prepared In2S3 NPs were investigated using X-ray photoelectron spectroscopy. The photocatalytic abilities of the pure and Ag-doped In2S3 NPs under visible-light illumination were evaluated systematically and compared for the decomposition of (i) tetracycline (TC), which is widely used as an antibiotic, and (ii) methylene blue (MB) and rhodamine B (RhB), which are toxic dyes widely used in textile factories. Waste from the production of TC, MB, and RhB has a detrimental impact on the environment and on human health. Overall, the Ag-doped In2S3 NPs exhibited better performance than pure In2S3 NPs for the photocatalytic degradation of TC with higher removal efficiencies. For the Ag: In2S3(2) sample with ∼ 1.4 at.% of Ag, the degradation of TC, MB, and RhB after 3 h was 76.4%, 96.1% and 99.5%, respectively. Furthermore, the Ag-doped In2S3 NPs showed improved hydrogen production via photoelectrochemical water splitting compared to pure In2S3 NPs.



中文翻译:

银掺杂对In2S3纳米粒子性质和光催化性能的影响

研究了Ag掺杂对In 2 S 3纳米粒子(NPs)的性质和光催化活性的影响。使用传统的化学溶液工艺制备纯 In 2 S 3和掺银 In 2 S 3 NP。使用不同的 Ag 浓度来确定最佳掺杂浓度。X射线衍射(XRD)结果表明,所有制备的纳米颗粒都具有多晶立方晶体结构。此外,Ag 掺杂的 In 2 S 3 NPs的 XRD 峰显示出比纯 In 2 S 3 的那些略微移动到更低的 2θ 值。NPs,表明 Ag 成功并入 In 2 S 3晶格。使用X射线光电子能谱研究了制备的In 2 S 3 NPs的化学键合状态和组成。系统地评估了纯的和掺杂 Ag 的 In 2 S 3 NPs 在可见光照射下的光催化能力,并比较了(i)广泛用作抗生素的四环素(TC)和(ii)亚甲基的分解蓝色 (MB) 和罗丹明 B (RhB) 是纺织厂广泛使用的有毒染料。TC、MB 和 RhB 生产过程中产生的废物会对环境和人类健康产生不利影响。总体而言,Ag 掺杂的 In 2S 3 NPs在光催化降解 TC 方面表现出比纯 In 2 S 3 NPs更好的性能,具有更高的去除效率。对于Ag:在含有约1.4 at.% Ag 的2 S 3 (2) 样品中,3 小时后TC、MB 和RhB 的降解率分别为76.4%、96.1% 和99.5%。此外,与纯 In 2 S 3 NPs相比,Ag 掺杂的 In 2 S 3 NPs 通过光电化学水分解显示出改善的氢气产量。

更新日期:2021-10-08
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