Interfacial Engineering of Bi₁₉Br₃S₂₇ Nanowires Promotes Metallic Photocatalytic CO₂ Reduction Activity under Near-Infrared Light Irradiation

Abstract

Developing highly efficient photocatalysts to utilize solar radiation for converting CO2 into solar fuels is of great importance for energy sustainability and carbon neutralization. Herein, through an alkali-etching-introduced interface reconstruction strategy, a nanowire photocatalyst denoted as V–Bi19Br3S27, with rich Br and S dual-vacancies and surface Bi–O bonding introduced significant near-infrared (NIR) light response, has been developed. The as-obtained V–Bi19Br3S27 nanowires exhibit a highly efficient metallic photocatalytic reduction property for converting CO2 into CH3OH when excited solely under NIR light irradiation. Free of any cocatalyst and sacrificial agent, metallic defective V–Bi19Br3S27 shows 2.3-fold higher CH3OH generation than Bi19Br3S27 nanowires. The detailed interfacial structure evolution and reaction mechanism have been carefully illustrated down to the atomic scale. This work provides a unique interfacial engineering strategy for developing high-performance sulfur-based NIR photocatalysts for photon reducing CO2 into alcohol for achieving high-value solar fuel chemicals, which paves the way for efficiently using the solar radiation energy extending to the NIR range to achieve the carbon neutralization goal.

Colloidal Bismuth Chalcohalide Nanocrystals

“…We expect further improvements for vertical devices that could potentially take advantage of the directional Bi−S framework of the NCs [51, 52] . These findings set the colloidal BiEX NCs as promising solar absorbers for photocatalytic and optoelectronic applications [23, 53, 54] . This work thus extends our knowledge on the chemistry of metal chalcohalide nanomaterials and contributes to establish this class of inorganic semiconductors as an effective complement to metal chalcogenides and halides for light‐harvesting purposes.…”

Photoconverting polyethylene terephthalate into exclusive carbon dioxide by heterostructured NiO/Fe2O3 nanosheets under mild conditions

“…In addition, the peaks at roughly 1540 and 1590 cm −1 could belong to the COOH* groups, while the peaks at approximately 1180 and 1220 cm −1 could be attributed to the CH 3 O* group. Also, the peaks at about 1080 cm -1 could be ascribed to the CHO* group [27][28][29][30]. That was to say, the in-situ FTIR spectra manifested the formation of COOH*, CH 3 O* and CHO* intermediates during the PET photoconversion process.…”

A Novel Synergetic Effect Between Ru and CeO2 Nanoparticles Leads to Highly Efficient Photothermocatalytic CO2 Reduction by CH4 with Excellent Coking Resistance

“…Photocatalytic CO 2 reduction provides a very promising strategy of converting CO 2 to solar fuels as well as realizing the storage of solar energy, which has aroused extensive interest. [ 1–21 ] For the photocatalytic CO 2 reduction strategy, the key challenges to be tackled are its low fuel production rate ( r fuel ) and light‐to‐fuel efficiency ( η ). Extensive efforts have been devoted to tackling the challenges by designing various efficient photocatalysts which could utilize visible, even infrared, energy in sunlight.…”