Deep insight of the influence of Cu valence states in co-catalyst on CO2 photoreduction

Selective conversion of CO2 to CH4 enhanced by WO3/In2O3 S-scheme heterojunction photocatalysts with efficient CO2 activation

“…1d). 37–39 In the temperature range of 400–800 °C, no significant signals are detected over pristine WO 3 . However, both pure In 2 O 3 and WI10 reveal three prominent desorption peaks corresponding to the decomposition of b-CO 3 2− (∼450 °C) and m-CO 3 2− (550–750 °C) species, suggesting strong chemisorption interactions between CO 2 molecules and In 2 O 3 .…”

“…1d). [37][38][39] In the temperature range of 400-800 °C, no signicant signals are detected over pristine WO 3 . However, both pure In The photocatalytic performance toward CO 2 reduction was evaluated in an online closed gas-circulation system (OLPCRS-2, Shanghai Boyi Scientic Instrument Co., Ltd) with a quartz reactor under visible light irradiation (Fig.…”

Retrospective insights into recent MXene-based catalysts for CO2electro/photoreduction: how far have we gone?

“…13,14 TiO 2 has emerged as one of the most popular photocatalytic materials among them because of its exorbitant cost, excellent photostability, and environmental safety. 15,16 Graphene oxides, 17,18 carbon nanotubes, 19,20 metal-organic frameworks, 21,22 boron nitrides, 23,24 transition metal-based or incorporated compounds (Bi, W, Cu, Mo, and Co), [25][26][27][28][29][30][31][32] and transition metal carbides or nitrides (MXenes), [33][34][35] are among other newly developed photocatalysts and electrocatalysts that have recently been used to convert CO 2 into valuable chemicals and fuels, despite the fact that many conventional TiO 2 -based photocatalysts have been extensively studied for CO 2 reduction. Due to the distinct qualities, such as the hydrophilic nature, nontoxicity, redox reaction, notable surface area, enhanced mechanical strength, exceptional melting point, eco-friendly flexibility, remarkable electrical conductivity, and elevated biocompatibility, MXene-based nanocatalysts have drawn the most attention for a variety of energy and environmental applications.…”

Artificial photosynthesis bringing new vigor into plastic wastes

“…15,16 Regrettably, natural photosynthesis only enables low solar-to-carbohydrate efficiency (e.g., ~2% or less for crops), 17 which renders it far from meeting our energy demand. Artificial photosynthesis, including CO 2 reduction reaction (CO 2 RR), N 2 fixation, water treatment, and air purification, [18][19][20][21][22][23][24][25] seeks to overcome the obstacle of biological photosynthesis by elevating the solar-to-chemical conversion efficiency with the presence of semiconductor photocatalysts. Taking water splitting as an example, it is consisted of hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), of which OER is associated with the sluggish four-hole transfer process for the formation of the O-O bond.…”