Microwave irradiation directly excites semiconductor catalyst to produce electric current or electron-holes pairs

Abstract Generally, photon of Microwave (MW) electromagnetic waves have long been thought to be lower energy, which could not excite metals or semiconductor materials to generate electric current and electron-holes pairs (e− cb + h+ vb). In this paper, we report an unexpected, Microwave “photoelectr...

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Autores principales:	Jicheng Zhou, Zhimin You, Wentao Xu, Zhiming Su, Yin Qiu, Lingfei Gao, Cheng Yin, Lixin Lan
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d9003bda176444b0932f69ea9a58fe4e
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spelling	oai:doaj.org-article:d9003bda176444b0932f69ea9a58fe4e2021-12-02T15:08:21ZMicrowave irradiation directly excites semiconductor catalyst to produce electric current or electron-holes pairs10.1038/s41598-019-41002-w2045-2322https://doaj.org/article/d9003bda176444b0932f69ea9a58fe4e2019-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-41002-whttps://doaj.org/toc/2045-2322Abstract Generally, photon of Microwave (MW) electromagnetic waves have long been thought to be lower energy, which could not excite metals or semiconductor materials to generate electric current and electron-holes pairs (e− cb + h+ vb). In this paper, we report an unexpected, Microwave “photoelectric effect”, when MW irradiates on the semiconductor materials, leading to generate electric current and electron-holes pairs (e− cb + h+ vb), on the semiconductor materials and on the MW catalyst. Further, we show that the action mechanism of Microwave “photoelectric effect” made water adsorbing on the surface of Microwave catalyst transform into hydroxyl radical (∙OH). Thus, this study has revealed the principle of generation Microwave “photoelectric effect” under MW irradiation, and the mechanism of MW catalytic oxidation degradation of organic in the wastewater and the mechanism of MW reduction method for preparation of nano-particle metal supported catalysts. Our findings challenge the classic view of MW irradiation only as heating method, which cannot excite to produce electric current and electron-holes pairs (e− cb + h+ vb). Our findings will open new field to use MW technology for MW catalytic oxidation degradation of organics in the wastewater, and for MW reduction method of metal supported catalysts preparation.Jicheng ZhouZhimin YouWentao XuZhiming SuYin QiuLingfei GaoCheng YinLixin LanNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-7 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jicheng Zhou Zhimin You Wentao Xu Zhiming Su Yin Qiu Lingfei Gao Cheng Yin Lixin Lan Microwave irradiation directly excites semiconductor catalyst to produce electric current or electron-holes pairs
description	Abstract Generally, photon of Microwave (MW) electromagnetic waves have long been thought to be lower energy, which could not excite metals or semiconductor materials to generate electric current and electron-holes pairs (e− cb + h+ vb). In this paper, we report an unexpected, Microwave “photoelectric effect”, when MW irradiates on the semiconductor materials, leading to generate electric current and electron-holes pairs (e− cb + h+ vb), on the semiconductor materials and on the MW catalyst. Further, we show that the action mechanism of Microwave “photoelectric effect” made water adsorbing on the surface of Microwave catalyst transform into hydroxyl radical (∙OH). Thus, this study has revealed the principle of generation Microwave “photoelectric effect” under MW irradiation, and the mechanism of MW catalytic oxidation degradation of organic in the wastewater and the mechanism of MW reduction method for preparation of nano-particle metal supported catalysts. Our findings challenge the classic view of MW irradiation only as heating method, which cannot excite to produce electric current and electron-holes pairs (e− cb + h+ vb). Our findings will open new field to use MW technology for MW catalytic oxidation degradation of organics in the wastewater, and for MW reduction method of metal supported catalysts preparation.
format	article
author	Jicheng Zhou Zhimin You Wentao Xu Zhiming Su Yin Qiu Lingfei Gao Cheng Yin Lixin Lan
author_facet	Jicheng Zhou Zhimin You Wentao Xu Zhiming Su Yin Qiu Lingfei Gao Cheng Yin Lixin Lan
author_sort	Jicheng Zhou
title	Microwave irradiation directly excites semiconductor catalyst to produce electric current or electron-holes pairs
title_short	Microwave irradiation directly excites semiconductor catalyst to produce electric current or electron-holes pairs
title_full	Microwave irradiation directly excites semiconductor catalyst to produce electric current or electron-holes pairs
title_fullStr	Microwave irradiation directly excites semiconductor catalyst to produce electric current or electron-holes pairs
title_full_unstemmed	Microwave irradiation directly excites semiconductor catalyst to produce electric current or electron-holes pairs
title_sort	microwave irradiation directly excites semiconductor catalyst to produce electric current or electron-holes pairs
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/d9003bda176444b0932f69ea9a58fe4e
work_keys_str_mv	AT jichengzhou microwaveirradiationdirectlyexcitessemiconductorcatalysttoproduceelectriccurrentorelectronholespairs AT zhiminyou microwaveirradiationdirectlyexcitessemiconductorcatalysttoproduceelectriccurrentorelectronholespairs AT wentaoxu microwaveirradiationdirectlyexcitessemiconductorcatalysttoproduceelectriccurrentorelectronholespairs AT zhimingsu microwaveirradiationdirectlyexcitessemiconductorcatalysttoproduceelectriccurrentorelectronholespairs AT yinqiu microwaveirradiationdirectlyexcitessemiconductorcatalysttoproduceelectriccurrentorelectronholespairs AT lingfeigao microwaveirradiationdirectlyexcitessemiconductorcatalysttoproduceelectriccurrentorelectronholespairs AT chengyin microwaveirradiationdirectlyexcitessemiconductorcatalysttoproduceelectriccurrentorelectronholespairs AT lixinlan microwaveirradiationdirectlyexcitessemiconductorcatalysttoproduceelectriccurrentorelectronholespairs
_version_	1718388217484410880

Microwave irradiation directly excites semiconductor catalyst to produce electric current or electron-holes pairs

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