Inorganic perovskite photocatalysts for solar energy utilization

Abstract

The development and utilization of solar energy in environmental remediation and water splitting is being intensively studied worldwide. During the past few decades, tremendous efforts have been devoted to developing non-toxic, low-cost, efficient and stable photocatalysts for water splitting and environmental remediation. To date, several hundreds of photocatalysts mainly based on metal oxides, sulfides and (oxy)nitrides with different structures and compositions have been reported. Among them, perovskite oxides and their derivatives (layered perovskite oxides) comprise a large family of semiconductor photocatalysts because of their structural simplicity and flexibility. This review specifically focuses on the general background of perovskite and its related materials, summarizes the recent development of perovskite photocatalysts and their applications in water splitting and environmental remediation, discusses the theoretical modelling and calculation of perovskite photocatalysts and presents the key challenges and perspectives on the research of perovskite photocatalysts.

Double‐hole‐mediated coupling of anionic dopants in perovskite NaNbO3 for efficient solar water splitting

“…Recently, perovskite‐type metal oxides, such as SrTiO 3 and NaTaO 3 , have attracted widespread attention in the fields of photocatalytic water splitting and degradation of organic pollutants in virtue of their stable layered structure, effectiveness in charge separation, high corrosion resistance, outstanding physical and chemical properties, and excellent photocatalytic activity . Among these perovskite materials, sodium niobate (NaNbO 3 ) has emerged as a potential candidate for photocatalysis and is touted as an environmentally friendly and viable replacement of widely used TiO 2 . Gu et al reported that the cubic NaNbO 3 nanowires with 0.5 wt% of Pt cocatalyst could split water to H 2 with quite high efficiency.…”

Perovskite Oxide LaNiO3 Nanoparticles for Boosting H2 Evolution over Commercial CdS with Visible Light

“…[30][31][32][33][34] In the crystal structure of ideal perovskite, the Ac ation is 12-fold coordinated and the Bc ation is 6fold coordinated to the oxygen anions. [30][31][32][33][34] In the crystal structure of ideal perovskite, the Ac ation is 12-fold coordinated and the Bc ation is 6fold coordinated to the oxygen anions.…”

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

“…Compared to the rapid development of complex metal oxide photocatalysts [5,12], making a simple binary photocatalyst TiO 2 active to fully harvest visible light is a challenge [13][14][15][16][17][18][19][20][21][22]. TiO 2 is easily available and low-cost, but has no visible light absorption due to its large bandgap of about 3 eV.…”