The lack of safe, efficient, and economical hydrogen storage technologies is a hindrance to the realization of the hydrogen economy. Reported herein is a reversible formate-based carbon-neutral hydrogen storage system that is established over a novel catalyst comprising palladium nanoparticles supported on nitrogen-doped mesoporous carbon. The support was fabricated by a hard template method and nitridated under a flow of ammonia. Detailed analyses demonstrate that this bicarbonate/formate redox equilibrium is promoted by the cooperative role of the doped nitrogen functionalities and the well-dispersed, electron-enriched palladium nanoparticles.
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http://dx.doi.org/10.1002/cssc.201501376 | DOI Listing |
ACS Nano
January 2025
Department of Materials Science and Engineering, National University of Singapore, Singapore 117575, Singapore.
Electrochemical water splitting is a promising method for generating green hydrogen gas, offering a sustainable approach to addressing global energy challenges. However, the sluggish kinetics of the anodic oxygen evolution reaction (OER) poses a great obstacle to its practical application. Recently, increasing attention has been focused on introducing various external stimuli to modify the OER process.
View Article and Find Full Text PDFChem Sci
January 2025
School of Chemistry and Chemical Engineering, Anhui University of Technology Ma'anshan 243032 Anhui China
Organic compounds present promising options for sustainable zinc battery electrodes. Nevertheless, the electrochemical properties of current organic electrodes still lag behind those of their inorganic counterparts. In this study, nitro groups were incorporated into pyrene-4, 5, 9, 10-tetraone (PTO), resulting in an elevated discharge voltage due to their strong electron-withdrawing capabilities.
View Article and Find Full Text PDFGas leak detection is one of the most vital issues in the mining and energy industries. Despite many highly specific and sensitive laser-based spectroscopic systems available on the market, the universal optical gas leak detector is still unattainable. In this paper we demonstrate the laser gas sensing setup capable of indirect detection of virtually any gas leaks using differential optical dispersion spectroscopy of oxygen near 761 nm.
View Article and Find Full Text PDFJ Am Chem Soc
January 2025
EaStCHEM School of Chemistry, University of St Andrews, North Haugh, St Andrews KY16 9ST, U.K.
New approaches to achieve facile and reversible dihydrogen activation are of importance for synthesis, catalysis, and hydrogen storage. Here we show that low-coordinate magnesium oxide complexes [{(nacnac)Mg}(μ-O)] , with nacnac = HC(RCNDip), Dip = 2,6-PrCH, R = Me (), Et (), Pr (), readily react with dihydrogen under mild conditions to afford mixed hydride-hydroxide complexes [{(nacnac)Mg}(μ-H)(μ-OH)] . Dehydrogenation of complexes is strongly dependent on remote ligand substitution and can be achieved by simple vacuum-degassing of (R = Pr) to regain .
View Article and Find Full Text PDFBioresour Technol
January 2025
Department of Food Science and Engineering, School of Chemical Engineering, Xiangtan University, Xiangtan 411105 China. Electronic address:
Microalgal exopolysaccharides (EPS) possess significant functional benefits across various industrial sectors, but their commercial feasibility is constrained by inefficient synthesis and poorly understood synthesis mechanisms. This study found that 1.25 mmol/L sodium bisulfite promoted EPS accumulation to 224.
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