Sushil Kumar Pandey
Department of Chemistry, St. Xavier’s College, Ranchi - 834001, India.
Download PDFOver the past few decades, global energy demand has increased dramatically, placing immense pressure on already depleting fossil fuel reserves. This escalating demand, combined with rising concerns over climate change and environmental pollution, has intensified the need for a sustainable and clean energy supply. Conventional fossil fuels not only accelerate environmental degradation but also create economic instability and geopolitical tensions, underscoring the urgency of transitioning to renewable energy technologies. In this scenario, the development of efficient and sustainable energy production methods has become indispensable. Among the various alternatives, hydrogen stands out as a highly promising clean energy carrier. As the most abundant element in the universe, hydrogen possesses high energy density and produces only water upon combustion, making it an environmentally benign fuel. It can be generated through multiple pathways, with photocatalysis emerging as one of the most attractive approaches. Photocatalysis offers a distinctive strategy for hydrogen production by utilizing sunlight to drive chemical reactions, enabling the harvesting of hydrogen gas from water or biomass resources. By directly converting solar energy into chemical energy, this process presents a sustainable route toward clean fuel generation.
Keywords: photocatalysis; hydrogen harvesting; band gap; water splitting; photoreforming
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