Solar-driven catalytic conversion of carbon dioxide (CO) into value-added C chemicals and fuels has attracted significant attention over the past decades, propelled by urgent environmental and energy demands. However, the catalytic reduction of CO continues to face significant challenges due to inherently slow reduction kinetics. This review traces the historical development and current state of photothermal CO reduction, detailing the mechanisms by which CO is transformed into C products.
View Article and Find Full Text PDFPhotocatalytic upcycling of glycerol, a significant byproduct of biodiesel, to value-added lactic acid coupled with H production shows great promise for resource utilization and renewable fuel production. However, this reaction is currently limited to low efficiency and moderate selectivity due to insufficient light absorption, rapid charge carrier recombination, and unfavorable reaction kinetics. Herein, we report an atomic-level heterojunction photocatalyst consisting of CdZnS embedded uniformly with Cu-S moieties at the atomic-level scale.
View Article and Find Full Text PDFLoading cocatalysts on semiconductor-based photocatalysts to create active reaction sites is a preferable method to enhance photocatalytic activity and a widely adopted strategy to achieve effective photocatalytic applications. Although theoretical calculations suggest that the broad density of states of noble metal cocatalysts, such as Pt, act as a recombination center, this has never been experimentally demonstrated. Herein, we employed pico-nano and nano-micro second transient absorption spectroscopy to investigate the often overlooked photogenerated holes, instead of the widely studied electrons on Pt- and Ni-loaded SrTiO to evaluate the effects of cocatalysts as a recombination center.
View Article and Find Full Text PDFPhoto-oxidation of methane (CH) using hydrogen peroxide (HO) synthesized in situ from air and water under sunlight offers an attractive route for producing green methanol while storing intermittent solar energy. However, in commonly used aqueous-phase systems, photocatalysis efficiency is severely limited due to the ultralow availability of CH gas and HO intermediate at the flooded interface. Here, we report an atomically modified metal-organic framework (MOF) membrane nanoreactor that promotes direct CH photo-oxidation to methanol at the gas-solid interface in a reticular open framework.
View Article and Find Full Text PDFBackground: Cefoperazone/sulbactam is commonly prescribed for the treatment of infected patients with cirrhosis.
Aim: To investigate the effect of cefoperazone/sulbactam on coagulation in cirrhotic patients and assess the effectiveness of vitamin K1 supplementation in preventing cefoperazone/sulbactam-induced coagulation disorders.
Method: This retrospective cohort study compared coagulation function in 217 cirrhotic patients who received cefoperazone/sulbactam with and without vitamin K1 supplementation (vitamin K1 group, n = 108; non-vitamin K1 group, n = 109).
Electrolyte cations have been demonstrated to effectively enhance the rate and selectivity of the electrochemical CO reduction reaction (CORR), yet their implementation in electrolyte-free membrane electrode assembly (MEA) electrolyzer presents significant challenges. Herein, an anchored cation strategy that immobilizes Cs on carbon vacancies was designed and innovatively implemented in MEA electrolyzer, enabling highly efficient CO electroreduction over commercial silver catalyst. Our approach achieves a CO partial current density of approximately 500 mA cm in the MEA electrolyzer, three-fold enhancement compared to pure Ag.
View Article and Find Full Text PDFBackground: Colorectal cancer (CRC) is the third most common malignant tumor. Fusobacterium nucleatum (F. nucleatum) is overabundant in CRC and associated with metastasis, but the role of F.
View Article and Find Full Text PDFPromoting the proton-coupled electron transfer process in order to solve the sluggish carrier migration dynamics is an efficient way to accelerate the photocatalytic CO reduction (PCR) process. Herein, through the reduction of Sn by amino and sulfhydryl groups, Sn particles are lodged in S-vacancies SnS nanosheets. The high conductance of Sn particles expedites the collection and transport of photogenerated electrons, activating the surrounding surface of unsaturated sulfur (S ) and thus lowering the energy barrier for generation of *COOH.
View Article and Find Full Text PDFThe structure and configuration of reaction centers, which dominantly govern the catalytic behaviors, often undergo dynamic transformations under reaction conditions, yet little is known about how to exploit these features to favor the catalytic functions. Here, we demonstrate a facile light activation strategy over a TiO-supported Cu catalyst to regulate the dynamic restructuring of Cu active sites during low-temperature methanol steam reforming. Under illumination, the thermally deactivated Cu/TiO undergoes structural restoration from inoperative CuO to the originally active metallic Cu caused by photoexcited charge carriers from TiO, thereby leading to substantially enhanced activity and stability.
View Article and Find Full Text PDFFront Cardiovasc Med
August 2023
Background: Cardiovascular tissue engineering (CTE) is a promising technique to treat incurable cardiovascular diseases, such as myocardial infarction and ischemic cardiomyopathy. Plenty of studies related to CTE have been published in the last 30 years. However, an analysis of the research status, trends, and potential directions in this field is still lacking.
View Article and Find Full Text PDFCu-based nanocatalysts are the cornerstone of various industrial catalytic processes. Synergistically strengthening the catalytic stability and activity of Cu-based nanocatalysts is an ongoing challenge. Herein, the high-entropy principle is applied to modify the structure of Cu-based nanocatalysts, and a PVP templated method is invented for generally synthesizing six-eleven dissimilar elements as high-entropy two-dimensional (2D) materials.
View Article and Find Full Text PDFArtificial photosynthesis is a promising strategy for converting carbon dioxide (CO ) and water (H O) into fuels and value-added chemical products. However, photocatalysts usually suffered from low activity and product selectivity due to the sluggish dynamic transfer of photoexcited charge carriers. Herein, we describe anchoring of Ag single atoms on hollow porous polygonal C N nanotubes (PCN) to form the photocatalyst Ag @PCN with Ag-N coordination for CO photoreduction using H O as the reductant.
View Article and Find Full Text PDFSolar-driven CO hydrogenation into multi-carbon products is a highly desirable, but challenging reaction. The bottleneck of this reaction lies in the C-C coupling of C intermediates. Herein, we construct the C-C coupling centre for C intermediates via the in situ formation of Co -Co interface double sites on MgAl O (Co-CoO /MAO).
View Article and Find Full Text PDFACS Appl Mater Interfaces
March 2023
ZnS materials exhibit very negative potential of the conduction band, which is promising in photocatalytic reduction reactions. Unfortunately, previously reported ZnS materials for photocatalysis are mainly in the cubic phase, which produce high activity for H evolutions and low activity toward CO reductions. Herein, a hexagonal phase ZnS photocatalyst is fabricated for highly efficient CO reduction reactions.
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