The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Photocatalytic CO2 reduction is severely limited by the rapid recombination of photo‐generated charges and insufficient reactive sites. Creating electric field and defects are effective strategies to inhibit charge recombination and enrich catalytic sites, respectively. Herein, a coupled strategy of ferroelectric poling and cationic vacancy is developed to achieve high‐performance CO2 photoreduction...
Using CO2, water, and sunlight to produce solar fuel is a very attractive process, which can synchronously reduce carbon and convert solar energy into hydrocarbons. However, photocatalytic CO2 reduction is often limited by the low selectivity of reduction products and poor photocatalytic activity. In this study, S‐scheme Bi5O7I‐OVs/Cd0.5Zn0.5S (Bi5O7I‐OVs/CZS‐0.5) heterojunction with strong interfacial...
Limited comprehension of the reaction mechanism has hindered the development of catalysts for CO2 reduction reactions (CO2RR). Here, the bimetallic AgCu nanocatalyst platform is employed to understand the effect of the electronic structure of catalysts on the selectivity and activity for CO2 electroreduction to CO. The atomic arrangement and electronic state structure vary with the atomic ratio of...
Coupling hollow semiconductor with metal–organic frameworks (MOFs) holds great promise for constructing high‐efficient CO2 photoreduction systems. However, energy band mismatch between them makes it difficult to exert their advantages to maximize the overall photocatalytic efficiency, since that the blockage of desirable interfacial charge transfer gives rise to the enrichment of photoelectrons and...
Converting CO2 into value‐added products by photocatalysis, electrocatalysis, and photoelectrocatalysis is a promising method to alleviate the global environmental problems and energy crisis. Among the semiconductor materials applied in CO2 catalytic reduction, Cu2O has the advantages of abundant reserves, low price and environmental friendliness. Moreover, Cu2O has unique adsorption and activation...
The current solar‐chemical‐industry based on semiconductor photocatalyst is impractical. Metal catalysts are extensively employed in thermal‐ and electro‐catalysis industries, but unsuitable for direct‐driven photocatalysis. Herein, silver quantum dots (Ag‐QDs) are synthesized on support via an in situ photoreduction method, and in situ photocatalysis temperature programmed dynamics chemisorption...
Controllable CO2 Reduction
In article number 2207234, Ruiting Xue, Jun Xie, and co‐workers report a silver quantum dot (Ag‐QDs) photocatalyst capable of tunneling photocatalytic reaction using surface plasmons. Ag‐QDs can be selectively regulated as oxidation or reduction sites and drive pollutant oxidation or CO2 reduction under entire solar. This technology is expected to restore ecological environment...
Photocatalytic CO2 conversion into value‐added chemicals is a promising route but remains challenging due to poor product selectivity. Covalent organic frameworks (COFs) as an emerging class of porous materials are considered as promising candidates for photocatalysis. Incorporating metallic sites into COF is a successful strategy to realize high photocatalytic activities. Herein, 2,2′‐bipyridine‐based...
In recent years, photocatalysis has received increasing attention in alleviating energy scarcity and environmental treatment, and graphite carbon nitride (g‐C3N4) is used as an ideal photocatalyst. However, it still remains numerous challenges to obtain the desirable photocatalytic performance of intrinsic g‐C3N4. Functional group functionalization, formed by introducing functional groups into the...
Lead halide perovskite materials have great potential for photocatalytic reaction due to their low fabrication cost, unique optical absorption coefficient, and suitable band structures. However, the main problems are the toxicity and instability of the lead halide perovskite materials. Therefore, a facile synthetic method is used to prepare lead‐free environmentally friendly Cs2TiX6(X = Cl, Cl0.5Br...
Post‐combustion flue gas (mainly containing 5–40% CO2 balanced by N2) accounts for about 60% global CO2 emission. Rational conversion of flue gas into value‐added chemicals is still a formidable challenge. Herein, this work reports a β‐Bi2O3‐derived bismuth (OD‐Bi) catalyst with surface coordinated oxygen for efficient electroreduction of pure CO2, N2, and flue gas. During pure CO2 electroreduction,...
Tuning the coordination environment and geometric structures of single atom catalysts is an effective approach for regulating the reaction mechanism and maximize the catalytic efficiency of single‐atom centers. Here, a template‐based synthesis strategy is proposed for the synthesis of high‐density NiNx sites anchored on the surface of hierarchically porous nitrogen‐doped carbon nanofibers (Ni‐HPNCFs)...
Artificial photosynthesis for CO2 reduction coupled with water oxidation currently suffers from low efficiency due to inadequate interfacial charge separation of conventional Z‐scheme heterojunctions. Herein, an unprecedented nanoscale Janus Z‐scheme heterojunction of CsPbBr3/TiOx is constructed for photocatalytic CO2 reduction. Benefitting from the short carrier transport distance and direct contact...
Recent studies have found that the existence of oxygen around the active sites may be essential for efficient electrochemical CO2‐to‐CO conversion. Hence, this work proposes the modulation of oxygen coordination and investigates the as‐induced catalytic behavior in CO2RR. It designs and synthesizes conjugated phthalocyanine frameworks catalysts (CPF‐Co) with abundant CoN4 centers as an active source,...
Encapsulating photogenerated charge‐hopping nodes and space transport bridges within metal–organic frameworks (MOFs) is a promising method of boosting the photocatalytic performance. Herein, this work embeds electron transfer media (9,10‐bis(4‐pyridyl)anthracene (BPAN)) in MOF cavities to build multi‐level electron transfer paths. The MOF cavities are accurately regulated to investigate the significance...
Perovskite nanocrystals (PNCs) are promising candidates for solar‐to‐fuel conversions yet exhibit low photocatalytic activities mainly due to serious recombination of photogenerated charge carriers. Constructing heterojunction is regarded as an effective method to promote the separation of charge carriers in PNCs. However, the low interfacial quality and non‐directional charge transfer in heterojunction...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.