Abstract
Plasmonic hybrid nanostructures have been investigated as attractive heterogeneous photocatalysts that can utilize sunlight to produce valuable chemicals. In particular, the efficient photoconversion of CO2 into a stable hydrocarbon with sunlight can be a promising strategy to achieve a sustainable human life on Earth. The next step for hydrocarbons once obtained from CO2 is the carbon–carbon coupling reactions to produce a valuable chemical for energy storage or fine chemicals. For these purposes, plasmonic nanomaterials have been widely investigated as a visible-light-induced photocatalyst to achieve increased efficiency of photochemical reactions with sunlight. In this review, we discuss recent achievements involving plasmonic hybrid photocatalysts that have been investigated for CO and CO2 photoreductions to form multi-carbon products and for C–C coupling reactions, such as the Suzuki–Miyaura coupling reactions.
Highlights
Global population growth and industrial development have been continuously causing the consumption of fossil fuels, resulting in environmental pollution and energy shortages
Bhalla et al used supramolecular ensembles as reactors and stabilizers of CuNPs, which is similar to supramolecular ensemble-based Ag@Cu2O core@shell NPs [148]. They confirmed the existence of the localized surface plasmon resonances (LSPR) band of CuNPs for plasmonic photocatalysts, and the hybrid systems showed efficient photocatalytic efficiency for photocatalytic C(sp2)–H alkynylation (Figure 16b)
Suzuki coupling can be represented in C–C cross-coupling reactions, including Heck, Sonogashira, Stille, Negishi, and other reactions, typically using Pd as an active catalyst and plasmonic NPs with semiconductors as light-responsive materials to accelerate photocatalytic reactions
Summary
Global population growth and industrial development have been continuously causing the consumption of fossil fuels, resulting in environmental pollution and energy shortages. Among many applications with light, mimicking the photosynthetic system with a catalyst and sun light will be greatly attracting and challenging areas In this regard, the efficient conversion of CO2 into hydrocarbon with sun light is one plausible way to reduce the amount of CO2 at atmosphere by producing stable chemicals, which can be utilized as an energy source when necessary [8,9]. 2. Plasmonic Hybrid Photocatalysts for CO2 Reduction into Hydrocarbon with Multi-Carbon Products. Gold Nanoparticle (AuNP)-Assisted Plasmonic Photocatalysts for CO2 Reduction to Multi-Carbon Products. There have been several attempts to produce value-added fuels through CO2 conversion using plasmonic hybrid photocatalysts, even though only a few studies have been conducted to generate single carbon products.
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