二元碱金属共掺杂石墨相氮化碳的制备及光催化性能评价

doi:10.11896/j.issn.1005-023X.2018.24.002

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Abstract Alkali metals co-doped graphitic carbon nitride (g-C₃N₄) was prepared using melamine as precursor, KCl and NaCl as molten salts, and characterized by X-ray diffraction (XRD), N₂ adsorption, UV-vis spectroscopy, X-ray photoelectron spectroscopy (XPS), and Photoluminescence (PL). By controlling the weight ratio of eutectic salts to melamine, the VB and CB potentials of prepared g-C₃N₄ could be tuned from +1.55 V and -1.10 V to +2.27 V and -0.27 V, respectively. Besides, the ions embedding inhibited the crystal growth, enhanced the separation rate of photo-generated electrons and holes, and enlarged the surface area. The catalytic abilities of products were investigated by photodegradation and mineralization of Rhodamine (RhB) under visibe light. The results showed that photocatalytic activity and stability of prepared catalysts were significantly improved after alkali metals doping.

Key words： g-C₃N₄ alkali metal photocatalysis visible light

Published: 23 January 2019

CLC number:	O641
	O649

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	Articles by authors
	LIANG Hongyu
	ZOU He
	HU Shaozheng
	LI Jianzhong
	TIAN Yanwen

Cite this article:

LIANG Hongyu,ZOU He,HU Shaozheng, et al. Preparation of Alkali Metals Co-doped Graphitic Carbon Nitride by Molten Salt Method and Photocatalytic Performance[J]. Materials Reports, 2018, 32(24): 4217-4223.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2018.24.002 OR http://www.mater-rep.com/EN/Y2018/V32/I24/4217

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