Developing highly efficient electrocatalysts to produce syngas with a stable hydrogen/carbon monoxide (H/CO) ratio in a wide potential window via electrochemical carbon dioxide (CO) reduction is desperately required but still challenging. Herein, a dual-atomic site on boron, nitrogen-codoped carbon nanotubes (BCN) has been designed, containing both cobalt (CoN) and nickel (NiNB) sites. Benefiting from the structure advantage and the bifunctional Co/Ni sites, such designed catalyst (CoNi-BCN) demonstrates remarkable performance for syngas production, achieving a stable H/CO ratio of 1.5 over a broad potential window from -0.47 to -0.87 V vs. RHE. By tuning the Co/Ni molar ratio in CoNi-BCN, the H/CO ratio can be adjusted from 0.5 to 2. In addition, this electrocatalyst exhibits outstanding stability within a long-term 20 h electrolyzing. Both experimental and theoretical calculation results confirm the primary role of the Co sites in H production and the Ni sites in CO production, as well as the preferred process for H evolution. This work provides a strategy in the construction of dual-site catalysts for efficient syngas production, which is significant for practical applications.
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http://dx.doi.org/10.1016/j.jcis.2024.12.096 | DOI Listing |
Int J Mol Sci
November 2024
Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow 119899, Russia.
Cation-pumping membrane pyrophosphatases (mPPases; EC 7.1.3.
View Article and Find Full Text PDFJ Occup Environ Med
November 2024
From the Department of Health Informatics, Kyoto University School of Graduate School of Medicine and School of Public Health, Kyoto, Japan (D.K., Y.N., M.T., Y.T., T.N.); Occupational Disease Clinic, Occupational Safety and Health Center, Ulaanbaatar, Mongolia (N.B., M.L.); Department of Pulmonology and Allergology, School of Medicine, Mongolian National University of Medical Sciences, Ulaanbaatar, Mongolia (I.D.).
Appl Environ Microbiol
August 2024
Department of Bacteriology, University of Wisconsin-Madison, Madison, Wisconsin, USA.
Unlabelled: Humans and animals encounter a summation of exposures during their lifetime (the exposome). In recent years, the scope of the exposome has begun to include microplastics. Microplastics (MPs) have increasingly been found in locations, including in animal gastrointestinal tracts, where there could be an interaction with Typhimurium, one of the commonly isolated serovars from processed chicken.
View Article and Find Full Text PDFChemistryOpen
October 2024
Nantong University, Seyuan road No.9, Nantong, Jiangsu, China E-mail address.
Rationale: Quinolone antibiotics are extensively used clinically for human treatment and in agriculture. However, improper and excessive use can lead to the persistence of quinolone residues in animal tissues, potentially accumulating in the human body and posing health risks. Investigating the correlation between mass spectrometry cleavage patterns and molecular structural features enhances the analytical framework for detecting trace or unknown impurities in quinolones.
View Article and Find Full Text PDFJ Epidemiol
December 2024
Department of Health Informatics, Kyoto University School of Medicine and Public Health.
Background: The use of life-sustaining treatment (LST) in the final stage of life is a major policy concern due to increased costs, while its intensity does not correlate with quality. Previous reports have shown declining trends in LST use in Japan. However, regional practice variations remain unclear.
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