Research Papers

Visible light active photocatalyst from recycled disposable heating pads

[+] Author Affiliations
Meng-Chien Lee, Chih-Ming Wang

National Dong Hwa University, Department of Opto-Electronic Engineering, Hualien 97401, Taiwan

Chun-Yu Wang

National Dong Hwa University, Department of Opto-Electronic Engineering, Hualien 97401, Taiwan

Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan

Che-Chin Chen

Instrument Technology Research Center, National Applied Research Laboratories, Hsinchu 30076, Taiwan

Ta-Chih Hsiao

National Central University, Graduate Institute of Environmental Engineering, Taoyuan 32001, Taiwan

Din Ping Tsai

Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan

National Taiwan University, Department of Physics, Taipei 10617, Taiwan

J. Nanophoton. 10(1), 016016 (Mar 16, 2016). doi:10.1117/1.JNP.10.016016
History: Received January 14, 2016; Accepted February 18, 2016
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Abstract.  Alpha-Fe2O3 (α-Fe2O3) is cheap and abundant and has potential to be a highly efficient photocatalyst for water splitting. According to the report, there are a huge amount of disposable heating pads being created every year, and the pads are used one time then thrown away. We found that the main product of used heating pads is α-Fe2O3. Here, we collect and purify the α-Fe2O3 powder in the used heating pads using low power consumption processes. It is shown that the recycled heating pads can be used as a cost-effective photocatalyst for H2 energy and for decomposition of organic pollutants as well. Additionally, the plasmonic enhanced photocatalysis reaction of α-Fe2O3 is also investigated. It is found that H2 evolution rate can be enhanced 15% using α-Fe2O3 nanoparticles coated with a thin Au layer. The degradation of methylene blue can also enhance 12% compared to photocatalyst α-Fe2O3 nanoparticles coated without Au layer.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Meng-Chien Lee ; Chun-Yu Wang ; Che-Chin Chen ; Chih-Ming Wang ; Ta-Chih Hsiao, et al.
"Visible light active photocatalyst from recycled disposable heating pads", J. Nanophoton. 10(1), 016016 (Mar 16, 2016). ; http://dx.doi.org/10.1117/1.JNP.10.016016


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