It is of significant importance to develop effective non-noble-metal catalysts for hydrogen evolution electrocatalysis under basic conditions. In this study, we demonstrate the facile construction of a NiP-CeO interface based on the central point that low-temperature phosphidation of the NiO-CeO precursor only converts NiO into NiP selectively. The resulting NiP-CeO nanosheet array on Ti mesh behaves as a durable catalyst for alkaline hydrogen evolution reaction (HER) electrocatalysis, and it can reach 20 mA cm at an overpotential of 84 mV in 1.0 M KOH, outperforming all reported Ni phosphide HER catalysts. Density functional theory calculations reveal that the NiP-CeO interface can promote water dissociation and optimize hydrogen adsorption free energy.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acs.inorgchem.7b02665 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Identifying Bacteria Responsible for Non-Sulphate-Based Hydrogen Sulphide Production in Aquaculture.
Environ Microbiol
January 2025
DTU Aqua, Section for Aquaculture, Technical University of Denmark, Hirtshals, Denmark.
The unintended microbiological production of hydrogen sulphide (HS) poses a significant challenge in engineered systems, including sewage treatment plants, landfills and aquaculture systems. Although sulphur-rich amino acids and other substrates conducive to non-sulphate-based HS production are frequently present, the capacity and potential of various microorganisms to perform sulphate-free HS production remain unclear. In this study, we identify the identity, activity and genomic characteristics of bacteria that degrade cysteine to produce HS in anaerobic enrichment bioreactors seeded with material from aquaculture systems.
View Article and Find Full Text PDFTandem modification strategy on technical lignin realize the balance of solubility and antioxidant activity in castor oil.
Int J Biol Macromol
January 2025
State Key Laboratory of Materials-Oriented Chemical Engineering, Collogue of Chemical Engineering, Nanjing Tech University, Nanjing 211816, PR China. Electronic address:
In this study, demethylated-acylated enzymatic hydrolysis lignin (DAEHL) with excellent solubility in castor oil and antioxidant activities were prepared via the tandem modification strategy. First, iodocyclohexane simultaneously achieved β-O-4 breakage and hydrogenation, which enhanced the antioxidant activity of lignin. Furthermore, the acylation reaction by palmitoyl chloride increased the alkyl content in the lignin, which can improve the solubility of lignin in castor oil.
View Article and Find Full Text PDFA Novel Lineage of Endosymbiotic Actinomycetales: Genome Reduction and Acquisition of New Functions in Bifidobacteriaceae Associated With Termite Gut Flagellates.
Environ Microbiol
January 2025
Research Group Insect Gut Microbiology and Symbiosis, Max Planck Institute for Terrestrial Microbiology, Marburg, Germany.
Cellulolytic flagellates are essential for the symbiotic digestion of lignocellulose in the gut of lower termites. Most species are associated with host-specific consortia of bacterial symbionts from various phyla. 16S rRNA-based diversity studies and taxon-specific fluorescence in situ hybridization revealed a termite-specific clade of Actinomycetales that colonise the cytoplasm of Trichonympha spp.
View Article and Find Full Text PDFTunable NiSe-NiSe Heterojunction for Energy-Efficient Hydrogen Production by Coupling Urea Degradation.
Small Methods
January 2025
Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, School of Resources, Environment and Materials, Guangxi University, Nanning, Guangxi, 530004, China.
Urea-assisted water splitting is a promising energy-saving hydrogen (H) production technology. However, its practical application is hindered by the lack of high-performance bifunctional catalysts for urea oxidation reaction (UOR) and hydrogen evolution reaction (HER). Herein, a heterostructured catalyst comprising highly active NiSe and NiSe, along with a conductive graphene-coated nickel foam skeleton (NiSe-NiSe/GNF) is reported.
View Article and Find Full Text PDFRecent Advances and Perspectives on Coupled Water Electrolysis for Energy-Saving Hydrogen Production.
Adv Sci (Weinh)
January 2025
Department of Chemistry, The University of Hong Kong, Hong Kong, 999077, China.
Overall water splitting (OWS) to produce hydrogen has attracted large attention in recent years due to its ecological-friendliness and sustainability. However, the efficiency of OWS has been forced by the sluggish kinetics of the four-electron oxygen evolution reaction (OER). The replacement of OER by alternative electrooxidation of small molecules with more thermodynamically favorable potentials may fundamentally break the limitation and achieve hydrogen production with low energy consumption, which may also be accompanied by the production of more value-added chemicals than oxygen or by electrochemical degradation of pollutants.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!