Facile Synthesis and High-Efficiency Visible-Light-Driven Photocatalytic Performance of Nanoscale Carbon/Ca Aluminate Nanoplates.

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Title:	Facile Synthesis and High-Efficiency Visible-Light-Driven Photocatalytic Performance of Nanoscale Carbon/Ca Aluminate Nanoplates.
Authors:	Sun, Zizhan¹, Cong, Qianmin¹, Wang, Xiaoyu¹, Cai, Zhengyu¹, Li, Junzhe¹, Li, Jiamao¹, Fan, Chuangang¹, Pei, Lizhai¹ lzpei1977@163.com
Source:	Journal of Electronic Materials. Oct2023, Vol. 52 Issue 10, p7007-7020. 14p.
Subjects:	Gentian violet, Aluminates, Visible spectra, Band gaps, Photocatalysts, Hydroxyl group
Abstract:	Nanoscale carbon/Ca aluminate nanoplates (NC–CAS) with different NC content, orthorhombic Ca5Al6O14 and hexagonal C phases were obtained by a facile route. X-ray diffraction and electron microscopy observation show that the thickness of the nanoplates is about 50 nm. NC–CAS possesses a polycrystalline structure. The band gap of the NC–CAS decreases to 1.78 eV with increasing NC content to 5 wt.%. NC–CAS exhibit strong visible-light absorption performance owing to the NC introduction into the CAS. Results showed that 20 mL gentian violet (GV, concentration of 10 mg L−1) can be degraded over a period of 30 min using 20 mg NC–CAS with NC content of 5 wt.% under visible light. The visible-light catalytic activity of the NC–CAS for GV degradation is greatly enhanced due to the reduction of band gap and recombination efficiency of carriers. Hydroxyl radicals and holes are the main reaction active substances. NC–CAS photocatalysts are stable and highly efficient for GV degradation under visible light. [ABSTRACT FROM AUTHOR]
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Database:	Engineering Source

Description
Abstract:	Nanoscale carbon/Ca aluminate nanoplates (NC–CAS) with different NC content, orthorhombic Ca5Al6O14 and hexagonal C phases were obtained by a facile route. X-ray diffraction and electron microscopy observation show that the thickness of the nanoplates is about 50 nm. NC–CAS possesses a polycrystalline structure. The band gap of the NC–CAS decreases to 1.78 eV with increasing NC content to 5 wt.%. NC–CAS exhibit strong visible-light absorption performance owing to the NC introduction into the CAS. Results showed that 20 mL gentian violet (GV, concentration of 10 mg L−1) can be degraded over a period of 30 min using 20 mg NC–CAS with NC content of 5 wt.% under visible light. The visible-light catalytic activity of the NC–CAS for GV degradation is greatly enhanced due to the reduction of band gap and recombination efficiency of carriers. Hydroxyl radicals and holes are the main reaction active substances. NC–CAS photocatalysts are stable and highly efficient for GV degradation under visible light. [ABSTRACT FROM AUTHOR]
ISSN:	03615235
DOI:	10.1007/s11664-023-10642-0