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Constructing Atomic Tungsten-Based Solid Frustrated-Lewis-Pair Sites with d-p Interactions for Selective CO Photoreduction.
J Am Chem Soc
December 2024
State Key Laboratory of Fluorine & Nitrogen Chemicals, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China.
Solid frustrated Lewis pair (FLP) shows remarkable advantages in the activation of small molecules such as CO, owing to the strong orbital interactions between FLP sites and reactant molecules. However, most of the currently constructed FLP sites are randomly distributed and easily reunited on the surface of catalysts, resulting in a low utilization rate of FLP sites. Herein, atomic tungsten-based FLP (N···W FLP) sites are constructed for photocatalytic CO conversion through introducing W single-atoms into polymeric carbon nitride.
View Article and Find Full Text PDFHighly Active WC-Based Composites for the HER in Alkaline Solution: the Role of Surface Oxide Species.
ACS Appl Mater Interfaces
May 2024
Institute of Materials and Nanotechnology, Department of Chemistry, University of La Laguna, PO Box 456, 38200 La Laguna, Santa Cruz de Tenerife, Spain.
The hydrogen evolution reaction (HER) is a crucial electrochemical process for the proposed hydrogen economy since it has the potential to provide pure hydrogen for fuel cells. Nowadays, hydrogen electroproduction is considerably expensive, so promoting the development of new non-noble catalysts for the cathode of alkaline electrolyzers appears as a suitable way to reduce the costs of this technology. In this sense, a series of tungsten-based carbide materials have been synthesized by the urea-glass route as candidates to improve the HER in alkaline media.
View Article and Find Full Text PDFMulticomponent nickel-molybdenum-tungsten-based nanorods for stable and efficient alkaline seawater splitting.
J Colloid Interface Sci
August 2024
Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, PR China. Electronic address:
Article Synopsis
- - The study focuses on developing efficient catalysts for hydrogen production via electrolysis of seawater, highlighting the importance of low overpotential and stability in seawater environments.
- - Researchers synthesized a novel catalyst structure, NC@NiN/MoO/WO@NF, using a hydrothermal method and an annealing process to enhance performance while maintaining a high surface area.
- - The resulting electrolytic cell demonstrated impressive performance characteristics, operating at 1.51 V and achieving continuous stability over 120 hours, indicating its potential for large-scale hydrogen production from seawater.
Rationally designing of Co-WS catalysts with optimized electronic structure to enhance hydrogen evolution reaction.
J Colloid Interface Sci
August 2024
Collaborative Innovation Center for Nanomaterials & Devices, College of Physics, Qingdao University, Qingdao 266071, China; State Key Laboratory of Bio-Fibers and Eco-Textiles (Qingdao University), Qingdao, 266071, China. Electronic address:
Designing and developing cost-effective, high-performance catalysts for hydrogen evolution reaction (HER) is crucial for advancing hydrogen production technology. Tungsten-based sulfides (WS) exhibit great potential as efficient HER catalysts, however, the activity is limited by the larger energy required for water dissociation under alkaline conditions. Herein, we adopt a top-down strategy to construct heterostructure Co-WS nanofiber catalysts.
View Article and Find Full Text PDFTungsten-based Lindqvist and Keggin type polyoxometalates as efficient photocatalysts for degradation of toxic chemical dyes.
Chemosphere
January 2024
Materials Chemistry Department, CSIR-Institute of Minerals & Materials Technology, Bhubaneswar, Odisha 751013, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India. Electronic address:
Photocatalytic dye degradation employing polyoxometalates (POMs) has been a research focus for several years. We report the facile synthesis of tungsten-based Lindqvist and Keggin-type POMs that degrade toxic chemical dyes, methyl orange (MO) and methylene blue (MB), respectively. The Lindqvist POM, sodium hexatungstate, NaWO, degrades MO under 100 W UV light irradiation within 15 min, whereas the Keggin POM, AgPWVO, degrades MB under 20 W visible light source within 180 min.
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