Thermal coupled photoconductivity as a tool to understand the photothermal catalytic reduction of CO2

Recent Advances in Noncontact External-Field-Assisted Photocatalysis: From Fundamentals to Applications

“…In addition, Li et al established the relationship between photoconductivity and photothermal catalytic activity by studying the effects of temperature, atmosphere, and OV concentration of TiO 2 . 141 According to the relationship between thermally coupled photoconductivity and photothermal catalysis, the migration of photogenerated electrons trapped by OVs to the surface and the accelerated transfer of photogenerated electrons to CO 2 were confirmed, providing a reasonable explanation for the introduction of OVs to enhance the photothermal catalytic reduction of CO 2 . In order to further clarify the mechanism of photothermal synergistic catalysis, Zhou et al used CO oxidation as a probe reaction and Pt/TiO 2 as a research system and employed synchrotron radiation in situ characterization technology to explore the effects of light intensity and temperature on CO oxidation reaction.…”

“…At the same time, the coupling of the plasmon effect and pyroelectric effect can effectively improve the SERS performance and photocatalytic efficiency, which provides a new idea for controlling SERS detection and improving in situ catalytic monitoring. In addition, Li et al established the relationship between photoconductivity and photothermal catalytic activity by studying the effects of temperature, atmosphere, and OV concentration of TiO 2 . According to the relationship between thermally coupled photoconductivity and photothermal catalysis, the migration of photogenerated electrons trapped by OVs to the surface and the accelerated transfer of photogenerated electrons to CO 2 were confirmed, providing a reasonable explanation for the introduction of OVs to enhance the photothermal catalytic reduction of CO 2 .…”

Review on LSPR assisted photocatalysis: effects of physical fields and opportunities in multifield decoupling

“…It has been reported that under the synergistic effect of ultraviolet light and the thermal eld, the photo excitation and thermal excitation could act on the conduction band electrons at the same time. 34 Li et al 121 studied the normalized photoconductivity response in a CO 2 atmosphere at room temperature and 120 C, respectively, and found that all TiO 2 samples with different oxygen vacancy contents showed higher photoconductivity at 120 C. According to the decay curve of photoconductivity, Li concluded that the accelerated decay might be resulting from the improved charge-involved surface reaction. Therefore, it was speculated that the increase of temperature was benecial to improve the transfer of electrons from the bulk to the surface and the concentration of surface carriers, thus adding the probability of reduction of CO 2 .…”

Near‐Infrared‐Responsive Photocatalysts

“…Photocatalysis reactions cannot be induced by thermal energy alone, so photothermal effect can play an auxiliary role in enhancing photocatalytic activity. [ 36 ] Increased temperature on the photocatalyst can facilitate the mobility of photoinduced charge carriers and reduce the activation energy of photocatalysis reactions. The mass‐transport and adsorption‐desorption rates of photocatalytic reactants also depend on reaction temperature.…”