Skip to content

Research at St Andrews

Complex perovskite A 3NiNb 2O 9 (A = Mg, Ca, Sr and Ba) as photocatalysts for H 2 production from aqueous solution under visible light irradiation

Research output: Contribution to conferencePaper

Author(s)

Xiaoxiang Xu, Gang Liu, Shuang Ni, John T.S. Irvine

School/Research organisations

Abstract

Developing photocatalysts that are capable of capturing and converting solar energy is an intriguing prospect, not only from environmental concerns but also from the energy security aspect. Perovskites (ABO 3) containing transition metal cations (Ni 2+, Co 3+ and Fe 3+) have shown reasonable visible light absorption yet their photocatalytic activities under visible light irradiation are generally poor. Here we performed a brief investigation on a series of complex perovskites A 3NiNb 2O 9 (A = Mg, Ca, Sr and Ba) with the aim to improve their photocatalytic activity by altering cation size at A sites. Their crystal structures and the effects upon light absorption were compared and discussed. Mg3NiNb2O9 was found to show the largest visible light absorption and highest photocatalytic activity (12.17 μmol h -1 /g catalyst) among the investigated perovskites. The shorter distance between the cations in the B sites is likely the reason for Mg3NiNb2O9 to be more photoactive.

Close

Details

Original languageEnglish
Publication statusPublished - 1 Dec 2011
Event242nd ACS National Meeting and Exposition - Denver, CO, United States
Duration: 28 Aug 20111 Sep 2011

Conference

Conference242nd ACS National Meeting and Exposition
CountryUnited States
CityDenver, CO
Period28/08/111/09/11

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

  1. Homogeneous doping of substitutional nitrogen/carbon in TiO2 plates for visible light photocatalytic water oxidation

    Wu, T., Niu, P., Yang, Y., Yin, L-C., Tan, J., Zhu, H., Irvine, J. T. S., Wang, L., Liu, G. & Cheng, H-M., 21 Jun 2019, In : Advanced Functional Materials. 29, 25, 1901943.

    Research output: Contribution to journalArticle

  2. Boosting photoelectrochemical water splitting performance of Ta3N5 nanorod array photoanodes by forming a dual co-catalyst shell

    Chen, R., Zhen, C., Yang, Y., Sun, X., Irvine, J. T. S., Wang, L., Liu, G. & Cheng, H-M., May 2019, In : Nano Energy. 59, p. 683-688 6 p.

    Research output: Contribution to journalArticle

  3. Control of spatially homogeneous distribution of heteroatoms to produce red TiO2 photocatalyst for visible-light photocatalytic water splitting

    Hong, X., Tan, J., Zhu, H., Feng, N., Yang, Y., Irvine, J., Wang, L., Liu, G. & Cheng, H-M., 2 Jan 2019, In : Chemistry - A European Journal. Early View

    Research output: Contribution to journalArticle

  4. Layered lithium niobium (III) oxide - LiNbO2 as a visible-light-driven photocatalyst for H2 evolution

    Xu, X., Liu, G., Ni, S. & Irvine, J. T. S., 20 Nov 2018, In : Journal of Physics: Energy. 1, 1, 7 p., 015001.

    Research output: Contribution to journalArticle

  5. Maximizing the visible light photoelectrochemical activity of B/N-doped anatase TiO2 microspheres with exposed dominant {001} facets

    Hong, X., Kang, Y., Zhen, C., Kang, X., Yin, L-C., Irvine, J. T. S., Wang, L., Liu, G. & Cheng, H-M., Jun 2018, In : Science China Materials. 61, 6, p. 831-838 8 p.

    Research output: Contribution to journalArticle

ID: 255838304