Promises of Plasmonic Antenna‐Reactor Systems in Gas‐Phase CO₂ Photocatalysis

Abstract

Sunlight‐driven photocatalytic CO2 reduction provides intriguing opportunities for addressing the energy and environmental crises faced by humans. The rational combination of plasmonic antennas and active transition metal‐based catalysts, known as “antenna‐reactor” (AR) nanostructures, allows the simultaneous optimization of optical and catalytic performances of photocatalysts, and thus holds great promise for CO2 photocatalysis. Such design combines the favorable absorption, radiative, and photochemical properties of the plasmonic components with the great catalytic potentials and conductivities of the reactor components. In this review, recent developments of photocatalysts based on plasmonic AR systems for various gas‐phase CO2 reduction reactions with emphasis on the electronic structure of plasmonic and catalytic metals, plasmon‐driven catalytic pathways, and the role of AR complex in photocatalytic processes are summarized. Perspectives in terms of challenges and future research in this area are also highlighted.

Photo-enhanced dehydrogenation of formic acid on Pd-based hybrid plasmonic nanostructures

“…In this typical system, no obvious interfacial hybrid state was created between the antenna and reactor, which are usually physically separated or isolated by insulators (such as SiO 2 ). 87,[97][98][99][100][101] According to Sytwu's work, an antenna-reactor system where Au-Pd is physically mixed, the b phase Pd nanocubes exhibit a faster transition rate to the a phase under illumination. 102,103 And the Pd closer to the plasmon antenna always transitions faster than those far away from the antenna.…”

Graphene Oxide Covered WO3 Nanosheet Arrays as Photoelectrode for Photoelectrochemical Detection of Trace H2O2

“…Recently, emerging photoelectrochemical (PEC) technology has been recognized as an elegant solution in the field of trace H 2 O 2 detection. , Moreover, it has attracted increasing attention due to the merits of being cost-efficient, easily manipulated, and highly sensitive and reliable, having lower limits of detection, etc. − The corresponding detection principle is mainly based on monitoring changes in photocurrent/voltage induced by the dissociation of H 2 O 2 on the surface of photocatalysts over PEC photoelectrodes (eq ). − Of note, the catalytic reaction has become more feasible with the introduction of light energy because it can lower the activation energy of chemical reactions. , Benefiting from this, PEC technology has more advantages in detecting trace H 2 O 2 compared with the current common method. , For example, Wu et al. reported that the electrochemical detection model based on Ni 5.5 Co 1.5 S 6 exhibited electrocatalytic performance for glucose, H 2 O 2, and nitrite, but the specific detection performance of H 2 O 2 is far from that of PEC technology .…”

“…19−21 Of note, the catalytic reaction has become more feasible with the introduction of light energy because it can lower the activation energy of chemical reactions. 22,23 Benefiting from this, PEC technology has more advantages in detecting trace H 2 O 2 compared with the current common method. 24,25 For example, Wu et al reported that the electrochemical detection model based on Ni 5.5 Co 1.5 S 6 exhibited electrocatalytic performance for glucose, H 2 O 2, and nitrite, but the specific detection performance of H 2 O 2 is far from that of PEC technology.…”

Advances in Photothermal Catalysis: Mechanisms, Materials, and Environmental Applications

“…Photothermal catalysis can be used for various applications, such as water splitting, − H 2 O 2 generation, − H 2 evolution, , organic synthesis, CO 2 reduction, − CH 4 activation, − and NH 3 synthesis, , which have been summarized and discussed in some excellent review articles. Recently, works about environmental purification by photothermal catalysis have attracted increasing attention, while their research status and advances are unclear to researchers. − In this review, we endeavor to offer an overview of the mechanism of photothermal conversion and provide a comprehensive guide highlighting essential considerations in environmental purification by photothermal catalysis, as shown in Figure .…”