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1.昆明理工大学材料科学与工程学院,云南 昆明 650093
2.昆明理工大学冶金与能源工程学院,云南 昆明 650093
3.复杂有色金属资源清洁利用国家重点实验室,云南 昆明 650093
Received:19 October 2018,
Revised:2018-12-05,
Online First:24 July 2026,
Published:05 March 2019
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段云彪, 徐存英, 王祥, 刘海, 黄梦婷. 反溶剂沉淀法合成Fe3+掺杂ZnO纳米结构及其可见光催化性能[J]. 化工学报, 2019, 70(3): 1198-1207 DOI: 10.11949/j.issn.0438-1157.20181233.
DUAN Yunbiao, XU Cunying, WANG Xiang, LIU Hai, HUANG Mengting. Synthesis of Fe3+-doped ZnO nanostructures by antisolvent precipitation method and their visible photocatalytic activity[J]. CIESC Journal, 2019, 70(3): 1198-1207 DOI: 10.11949/j.issn.0438-1157.20181233.
段云彪, 徐存英, 王祥, 刘海, 黄梦婷. 反溶剂沉淀法合成Fe3+掺杂ZnO纳米结构及其可见光催化性能[J]. 化工学报, 2019, 70(3): 1198-1207 DOI: 10.11949/j.issn.0438-1157.20181233. DOI:
DUAN Yunbiao, XU Cunying, WANG Xiang, LIU Hai, HUANG Mengting. Synthesis of Fe3+-doped ZnO nanostructures by antisolvent precipitation method and their visible photocatalytic activity[J]. CIESC Journal, 2019, 70(3): 1198-1207 DOI: 10.11949/j.issn.0438-1157.20181233. DOI:
以氯化胆碱-草酸低共熔溶剂(ChCl-OA DES)为溶剂,ZnO和Fe
2
O
3
为原料,通过简单的反溶剂沉淀法制备出不同掺杂浓度的Fe
3+
掺杂ZnO(Fe-ZnO)纳米结构。采用SEM、XRD、拉曼光谱、XPS等手段对所制Fe-ZnO结构与形貌进行了表征。结果表明,Fe-ZnO是由直径为20~30 nm纳米晶组装而成的微米棒。不同掺杂浓度的Fe-ZnO纳米晶均为六方铅锌矿结构,Fe
3+
很好地进入ZnO晶格。同时考察了所制Fe-ZnO的光吸收特性和光催化活性,发现Fe
3+
掺杂使其吸收峰红移至可见光范围,有效增强了可见光区域的催化活性。当Fe掺杂量为1.0%(atom)时,样品的光催化活性最好,比ZnO增大了约102倍。这说明Fe
3+
掺杂可改善ZnO对可见光光子的捕获能力。
Fe
3+
-doped ZnO (Fe-ZnO) nanostructures with different dopant concentrations were successfully synthesized by a simple anti
solvent precipitation method from the choline chloride-oxalic acid deep eutectic solvent (ChCl-OA DES). The structure and morphology of the prepared Fe-ZnO were characterized by SEM
XRD
Raman spectroscopy and XPS. The as-prepared Fe
3+
-doped ZnO sample was micro-rods that were composed of nanoparticles with diameter of 20—30 nm. All of Fe
3+
-doped ZnO samples with various Fe
3+
-doping concentration were hexagonal wurtzite structure and the Fe
3+
ions were well incorporated into the ZnO crystal lattice. In addition
the optical properties and photocatalytic activities of the samples were investigated based on ultraviolet-visible (UV-Vis) spectra analysis as well as the degradation of Rhodamine B in aqueous solution under visible light. Compared with ZnO catalysts
the threshold wavelength of Fe
3+
-doped ZnO nanostructure was shifted to the full visible light region (red shift) and their absorption in the visible region increased with increasing of Fe
3+
-doping concentration from 0 to 5.0%(atom). The content of iron ion was found to be significant to the photocatalytic efficiency of Fe-ZnO nanostructures. The results demonstrated that the most optimal Fe
3+
-doping concentration was 1.0% (atom)
and its photocatalytic activity was increased by 102% compared with ZnO under visible light. The enhanced photoactivity of the Fe
3+
-doped ZnO nanostructure was mainly due to the improved visible photon harvesting achieved by Fe
3+
doping.
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