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在碳布上制备用于光催化分解四环素的ZnCoO-Zn(OH)微球

Fabrication of ZnCoO-Zn(OH) Microspheres on Carbon Cloth for Photocatalytic Decomposition of Tetracycline.

作者信息

Juang Sin-Ei, Chin Ning-Chien, Chang Yu-Cheng, Chou Chia-Man

机构信息

Department of Materials Science and Engineering, Feng Chia University, Taichung 40724, Taiwan.

Department of Anesthesiology, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan.

出版信息

Molecules. 2024 Aug 27;29(17):4054. doi: 10.3390/molecules29174054.

DOI:10.3390/molecules29174054
PMID:39274902
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11396492/
Abstract

Zinc cobalt oxide-zinc hydroxide (ZnCoO-Zn(OH)) microspheres were successfully fabricated on carbon cloth via a sample hydrothermal method. The surface morphology of these microspheres and their efficacy in degrading methyl violet were further modulated by varying the thermal annealing temperatures. Adjusting the thermal annealing temperatures was crucial for controlling the porosity of the ZnCo₂O₄-Zn(OH)₂ microspheres, enhancing their photocatalytic performance. Various analytical techniques were utilized to evaluate the physical and chemical properties of the ZnCoO-Zn(OH) microspheres, including field-emission scanning electron microscopy, energy-dispersive spectroscopy, X-ray diffraction, field-emission transmission electron microscopy, X-ray photoelectron spectroscopy, and UV-vis spectroscopy. Compared to untreated ZnCoO-Zn(OH) microspheres, those subjected to thermal annealing exhibited increased specific surface area and light absorption capacity, rendering them highly effective photocatalysts under UVC light exposure. Subsequent studies have confirmed the superior performance of ZnCoO-Zn(OH) microspheres as a reusable photocatalyst for degrading methyl violet and tetracycline. Furthermore, trapping experiments during the photodegradation process using ZnCo₂O₄-Zn(OH)₂ microspheres identified hydroxyl radicals (·OH) and superoxide radicals (·O₂⁻) as the primary reactive species.

摘要

通过简单水热法成功地在碳布上制备了氧化锌钴 - 氢氧化锌（ZnCoO - Zn(OH)）微球。通过改变热退火温度进一步调控了这些微球的表面形貌及其降解甲基紫的效能。调节热退火温度对于控制ZnCo₂O₄ - Zn(OH)₂微球的孔隙率、增强其光催化性能至关重要。利用了各种分析技术来评估ZnCoO - Zn(OH)微球的物理和化学性质，包括场发射扫描电子显微镜、能量色散光谱、X射线衍射、场发射透射电子显微镜、X射线光电子能谱和紫外可见光谱。与未处理的ZnCoO - Zn(OH)微球相比，经过热退火的微球表现出更大的比表面积和光吸收能力，使其在紫外光C照射下成为高效的光催化剂。后续研究证实了ZnCoO - Zn(OH)微球作为可重复使用的光催化剂降解甲基紫和四环素的卓越性能。此外，在使用ZnCo₂O₄ - Zn(OH)₂微球的光降解过程中的捕获实验确定了羟基自由基（·OH）和超氧自由基（·O₂⁻）为主要的活性物种。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c0e9/11396492/36aa8161458a/molecules-29-04054-g013.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c0e9/11396492/479512ad03c0/molecules-29-04054-g008.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c0e9/11396492/36aa8161458a/molecules-29-04054-g013.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c0e9/11396492/479512ad03c0/molecules-29-04054-g008.jpg
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