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Novel Tm3+/Yb3+–co-doped Bi2MoO6: Synthesis, characterization, and enhanced photocatalytic activity under visible-light irradiation

Published online by Cambridge University Press:  03 February 2020

Zuowei Zhang
Affiliation:
Department of Inorganic Nonmetallic Materials Engineering, Dalian Polytechnic University, Dalian 116034, China
Hongshun Hao*
Affiliation:
Department of Inorganic Nonmetallic Materials Engineering, Dalian Polytechnic University, Dalian 116034, China; and Liaoning Key Lab for Aquatic Processing Quality and Safety, Dalian Polytechnic University, Dalian 116034, China
Shanshan Jin
Affiliation:
Department of Inorganic Nonmetallic Materials Engineering, Dalian Polytechnic University, Dalian 116034, China
Yunxia Hou
Affiliation:
Department of Inorganic Nonmetallic Materials Engineering, Dalian Polytechnic University, Dalian 116034, China; and Liaoning Key Lab for Aquatic Processing Quality and Safety, Dalian Polytechnic University, Dalian 116034, China
Hongman Hou*
Affiliation:
Liaoning Key Lab for Aquatic Processing Quality and Safety, Dalian Polytechnic University, Dalian 116034, China
Gongliang Zhang
Affiliation:
Liaoning Key Lab for Aquatic Processing Quality and Safety, Dalian Polytechnic University, Dalian 116034, China
Jingran Bi
Affiliation:
Liaoning Key Lab for Aquatic Processing Quality and Safety, Dalian Polytechnic University, Dalian 116034, China
Shuang Yan
Affiliation:
Department of Inorganic Nonmetallic Materials Engineering, Dalian Polytechnic University, Dalian 116034, China
Guishan Liu
Affiliation:
Department of Inorganic Nonmetallic Materials Engineering, Dalian Polytechnic University, Dalian 116034, China
Wenyuan Gao
Affiliation:
Department of Inorganic Nonmetallic Materials Engineering, Dalian Polytechnic University, Dalian 116034, China
*
a)Address all correspondence to these authors. e-mail: beike1952@163.com
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Abstract

A novel photocatalyst Tm3+/Yb3+–co-doped bismuth molybdate (Bi2MoO6) were synthesized via the hydrothermal method. The samples were characterized through X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy (XPS), UV-vis diffuse reflectance spectra, and photoluminescence. XPS characterization confirmed the doped rare earth elements. Analysis of the optical properties explained the up-conversion process and its effect on the photocatalytic performance. The as-synthesized samples were employed to decompose Rhodamine B to value its photocatalytic activities under visible light irradiation. The doped samples showed an enhanced photocatalytic activity compared with the bare Bi2MoO6. When the ratio of Tm3+ and Yb3+ was 0.5:5, the degradation efficiency was the highest of 96.1% within 25 min, which was higher than that (74.9%) of pure Bi2MoO6. Moreover, the photocatalytic mechanism of improving the photocatalytic properties was discussed. Besides, the sample showed a super stability in photocatalytic activity. A novel catalyst for industrial pollutant degradation was proposed.

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Article
Copyright
Copyright © Materials Research Society 2020

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Novel Tm3+/Yb3+–co-doped Bi2MoO6: Synthesis, characterization, and enhanced photocatalytic activity under visible-light irradiation
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