![]() ![]() Therefore, we need to focus on green and simplistic ways in order to convert precarious and corroding gaseous (H 2S) into clean energy (H 2) (Chen et al. Thus, an attractive stratagem for renewable energy generation and environmental remediation is exploiting photocatalytic processes (Raizada et al. Photocatalysis tends to overwhelm energy and environmental crises, which are the biggest dare of the twenty-first century (Raizada et al. Even with these studies, carbon-based fuels persist in being the leading source of energy and, therefore, it is decisive to marmalade them (Sang et al. Gratuitous utilization of fossil fuels results in inadequate access to clean energy sources and the exhaustion of fuels and simultaneously causes global warming and other climatic changes (Sajjadi et al. The hasty global and economic development over the past few years has brought about somber issues concerning the consumption of resources all over the world (Hasija et al. Energy issues and problems related to the environment have become an indispensable subject because of the smoldering of fossil fuels and environmental contamination (Pare et al. Solar energy is the principal energy source that sustains life (Qu and Duan 2013). The effect of dopant incorporation on electronic modulations of In 2S 3 is explained by the density functional theory. In 2S 3-based heterojunctions, i.e., traditional type II, all-solid-state, and direct Z-scheme photocatalytic systems show benefits such as larger charge separation, broad solar spectrum absorption, and amended conduction band and valence band edge potentials for maximum pollutant removal and H 2 production. Here we review the photocatalyst criteria for water splitting, the synthesis and morphological manipulations of In 2S 3, the synthesis of heterojunctions by coupling semiconductors to increase performance, and doping In 2S 3. In particular, photocatalysis by indium sulfide (In 2S 3) is drawing attention due to its suitable narrow bandgap of 2.0–2.3 eV for visible light harnessing, yet large-scale application of unmodified In 2S 3 is limited. Solar illumination is a promising source of primary energy to reduce global warming and to clean polluted waters, thus fostering research of the design of efficient photocatalysts for hydrogen production by water splitting and for contaminant degradation. ![]()
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