A facile synthesis of hollow TiO2 photocatalyst with high amount of carbon exhibiting efficient visible-light photocatalytic performance. Issue 1 (2nd January 2018)

• Record Type: Journal Article
• Authors: Qiu, Shoufei; Yin, Zhenliang; Chen, Juanrong; Chen, Li; Cao, Shunsheng
• Is Part Of: Journal of the Chinese Advanced Materials Society. Volume 6:Issue 1(2018)
• Page Start: 81
• Page End: 90
• Publication Date: 2018-01-02
• Subjects: C-decorating TiO2 -- hollow TiO2 -- photocatalysis -- high amount of carbon; Materials -- Periodicals; Materials science -- Periodicals; Materials; Periodicals; 620.1105
• DOI: 10.1080/22243682.2017.1408030
• Languages: English
• ISSNs: 2224-3682

Abstract

ABSTRACT: A facile approach was developed for the synthesis of hollow TiO2 photocatalyst with a high amount of carbon (C/TiO2 ). The method mainly includes the following steps: the preparation of cationic polystyrene spheres (CPSs), deposition of TiO2 precursor, and the pyrolysis of CPS in an N2 atmosphere at 450 °C (close system). The structure and morphology of C/N-TiO2 were characterized by using TEM, XRD, XPS, and UV-Vis spectroscopy. The results confirm that the carbon is coated on the surface of the photocatalysts, substantially enhancing the visible-light harvesting and accelerating the separation of the photo-generated electrons/holes. Interestingly, the formed C/TiO2 effectively narrows the bandgap of TiO2, manifesting excellent photocatalytic activities for degradation of MB and Rh B under visible-light irradiation than commercial P25. Therefore, our findings demonstrate that C/TiO2 is a more promising candidate as visible-light photocatalysts for potential applications. Abstract :