|
1
|
Herzog AE, Michael TJ, Dunkelberger AD, Johannes MD, Rolison DR, DeSario PA, Novak TG. Nanostructured CeO 2 photocatalysts: optimizing surface chemistry, morphology, and visible-light absorption. NANOSCALE 2024; 16:9659-9679. [PMID: 38683667 DOI: 10.1039/d4nr00676c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
Emerging photocatalytic applications of cerium dioxide (CeO2) include green hydrogen production, CO2 conversion to fuels, and environmental remediation of various toxic molecules. These applications leverage the oxygen storage capacity and tunable surface chemistry of CeO2 to photocatalyze the chosen reaction, but many open questions remain regarding the fundamental physics of photocatalysis over CeO2. The commonly ascribed 'bandgap' of CeO2 (∼3.1 eV) differs fundamentally from other photocatalytic oxides such as TiO2; UV light excites an electron from the CeO2 valence band into a 4f state, generating a polaron as the lattice distorts around the localized charge. Researchers often disregard the distinction between the 4f state and a traditional, delocalized conduction band, resulting in ambiguity regarding mechanisms of charge transfer and visible-light absorption. This review summarizes modern literature regarding CeO2 photocatalysis and discusses commonly reported photocatalytic reactions and visible light-sensitization strategies. We detail the often misunderstood fundamental physics of CeO2 photocatalysis and supplement previous work with original computational insights. The exceptional progress and remaining challenges of CeO2-based photocatalysts are highlighted, along with suggestions for further research directions based on the observed gaps in current understanding.
Collapse
Affiliation(s)
- Austin E Herzog
- NRC Postdoctoral Associate, U.S. Naval Research Laboratory, Washington, D.C., 20375, USA
| | - Tara J Michael
- NRC Postdoctoral Associate, U.S. Naval Research Laboratory, Washington, D.C., 20375, USA
| | - Adam D Dunkelberger
- Chemistry Division (Code 6100), U.S. Naval Research Laboratory, Washington, D.C., 20375, USA.
| | - Michelle D Johannes
- Materials Science and Technology Division (Code 6300), U.S. Naval Research Laboratory, Washington, D.C., 20375, USA
| | - Debra R Rolison
- Chemistry Division (Code 6100), U.S. Naval Research Laboratory, Washington, D.C., 20375, USA.
| | - Paul A DeSario
- Former NRL Staff Scientist in Code 6100, Advanced Naval Platforms Division, Office of Naval Research, Arlington, VA, 22203, USA
| | - Travis G Novak
- Chemistry Division (Code 6100), U.S. Naval Research Laboratory, Washington, D.C., 20375, USA.
| |
Collapse
|
|
2
|
Xu J, Liu X, Hu L, Li Z, Ma Y. A novel type-II NiCo-LDH/CeO 2 heterojunction for highly efficient photocatalytic H 2 production. NEW J CHEM 2022. [DOI: 10.1039/d2nj02848d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The study of environmentally friendly semiconductor photocatalysts has important practical significance for efficient photocatalytic hydrogen evolution.
Collapse
Affiliation(s)
- Jing Xu
- School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan 750021, P. R. China
- Ningxia Key Laboratory of Solar Chemical Conversion Technology, North Minzu University, Yinchuan 750021, P. R. China
- Key Laboratory of Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, P. R. China
| | - Xinyu Liu
- School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan 750021, P. R. China
| | - LinYing Hu
- School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan 750021, P. R. China
| | - Zezhong Li
- School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan 750021, P. R. China
| | - Yue Ma
- School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan 750021, P. R. China
| |
Collapse
|
|
3
|
Synthesis of MoS2/P-g-C3N4 nanocomposites with enhanced visible-light photocatalytic activity for the removal of uranium (VI). J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2021.122305] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
|
4
|
Li X, Xu J, Li L, Zhao S, Mao M, Liu Z, Li Y. Construction of Amorphous CoS/CdS Nanoparticles Heterojunctions for Visible–Light–Driven Photocatalytic H2 Evolution. Catal Letters 2021. [DOI: 10.1007/s10562-020-03468-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
|
5
|
Novel Z-scheme W18O49/CeO2 heterojunction for improved photocatalytic hydrogen evolution. J Colloid Interface Sci 2020; 579:297-306. [DOI: 10.1016/j.jcis.2020.06.075] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 06/11/2020] [Accepted: 06/18/2020] [Indexed: 01/30/2023]
|