Plasmonic photothermal catalysis: From localized surface plasmon resonance (LSPR) driven mechanisms to advanced energy conversion and environmental remediation

초록

Noble-metal plasmonic photothermal catalysis has become a viable method to enhance catalytic behaviour owing to the synergistic nature of photonic and localized thermal excitation. In the present review of the status of the noble plasmonic metal photothermal catalytic systems, the developments are summarized in detail with a specific focus on the structural design and mechanistic understanding. Initially, the theory of plasmonic photothermal catalysis, including localized surface plasmon resonance (LSPR), hot carrier generation and transfer, and near-field electromagnetic enhancement, which are all combinations of light harvesting and catalytic behaviours, is also addressed. The optical behaviour dependence on morphology-dependent parameters, such as particle size, shape, and structural symmetry, and catalytic efficiency is critically analyzed. In addition, the importance of the creation of heterojunctions between noble metals and semiconductor materials is also explained for the promotion of charge separation, the intensity of interactions at the interface, and the stability of catalysts. Systematic discussions on these catalytic systems have been utilized in energy conversion and environmental remediation in the form of the production of solar fuels and pollutant degradation. Finally, there are issues that exist concerning mechanistic insight, long-term stability and scalability, which are also articulated and provide insights into the rationalize for future development of better plasmonic photothermal catalyst.

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