Pit-embellished low-valent metal active sites customize CO₂photoreduction to methanol

Abstract

Controllable adjustment of low-valent metal active sites near the pits can promote the WO3−x surface charge delocalization, which dominates the formation of *CHO intermediates, thus customizing a unique reaction pathway for CO2 reduction to CH3OH.

Oxygen Vacancy Enabled Electronic Structure Engineering of Pt-WO3 Nanosheets toward Highly Efficient BTEX Sensing

“…Initially, the WO 3 •H 2 O precursor was prepared by using a wetchemistry approach. 22 Then, the obtained WO 3 •H 2 O nano-sheets were annealed at certain temperatures under a H 2 /Ar atmosphere for 2 h to obtain the porous WO 3 NSs with rich oxygen vacancies. Notably, due to different annealing temperatures of 300, 400, and 500 °C used, the three samples were named as WO 3 -300, WO 3 -400, and WO 3 -500, respectively.…”

Defect-enrichment in porous interface of ultrathin CuO nanobelts realizes a novel CO2photoreduction pathway

“…It is worth noting that the oxygen vacancies in air-15 can signicantly improve the light utilization efficiency, whereas the excessive defect sites can also act as photogenerated carrier recombination centers to block the reaction, causing its decreased catalytic activity. 34,35 To further verify the photocatalytic activity, we conducted the quantum efficiency (QE) measurement in the range of 334-675 nm (Fig. S12, ESI †).…”

Layered double hydroxides and their composites as high-performance photocatalysts for CO2 reduction

“…21,22 Among them, photocatalytic CO 2 reduction technology is inspired by artificial photosynthesis, in which using a semiconductor to capture solar energy is considered as a promising strategy because of its advantages of zero energy consumption, low cost, and low toxicity. 23–30…”

“…21,22 Among them, photocatalytic CO 2 reduction technology is inspired by artificial photosynthesis, in which using a semiconductor to capture solar energy is considered as a promising strategy because of its advantages of zero energy consumption, low cost, and low toxicity. [23][24][25][26][27][28][29][30] The phenomenon of photocatalysis was discovered by Honda-Fujishima in the 1970s, where semiconductor TiO 2 initiated the decomposition of water under the condition of light radiation. 31,32 Subsequently, the photocatalytic mechanism was studied based on the TiO 2 platform, and other photocatalytic materials were also developed.…”