Imran Mohammad, Ashraf Waseem, Hafiz Aurangzeb Khurram, Khanuja Manika
Centre for Nanoscience and Nanotechnology, Jamia Millia Islamia, New Delhi 110025, India.
ACS Omega. 2022 Jun 24;7(27):22987-22996. doi: 10.1021/acsomega.2c00945. eCollection 2022 Jul 12.
In this paper, we report the synthesis of zinc indium sulfide (ZnInS) microspheres synthesized via a low-temperature route, and the as-synthesized material was used for photocatalytic degradation of malachite green (MG), methyl orange (MO), and Direct Red 80 (DR-80) dyes. The as-synthesized material was characterized by powder X-ray diffraction and field-emission scanning electron microscopy for studying the crystal structure and surface morphology, respectively. Fourier transform infrared spectroscopy was performed to determine the functional groups attached. UV-Visible absorption spectrometry was done for light absorbance and band gap analysis, and Mott-Schottky analysis was performed to determine the nature and flat band potential of the material. A scavenger study was performed to analyze the active species taking part in the degradation process. The reusability of the material was tested up to four cycles to check the reduction in efficiency after each cycle. A time-correlated single-photon counting study was performed to observe the average lifetime of generated excitons during photocatalysis. It was found that the as-synthesized porous sample is more efficient in degrading the cationic dye than anionic dyes, which is further explained in the article.
在本文中，我们报道了通过低温路线合成的硫化锌铟（ZnInS）微球，并且将所合成的材料用于孔雀石绿（MG）、甲基橙（MO）和直接红80（DR - 80）染料的光催化降解。分别通过粉末X射线衍射和场发射扫描电子显微镜对所合成的材料进行表征，以研究晶体结构和表面形貌。进行傅里叶变换红外光谱分析以确定所附着的官能团。进行紫外 - 可见吸收光谱分析以进行吸光和带隙分析，并进行莫特 - 肖特基分析以确定材料的性质和平带电位。进行清除剂研究以分析参与降解过程的活性物种。对材料的可重复使用性进行了多达四个循环的测试，以检查每个循环后效率的降低情况。进行了时间相关单光子计数研究以观察光催化过程中产生的激子的平均寿命。结果发现，所合成的多孔样品在降解阳离子染料方面比阴离子染料更有效，本文对此进行了进一步解释。
