Herein, cobalt ammine complexes are combined with alkali-resistant polyoxoniobates (PONbs) at the molecular level to obtain two new organic-inorganic hybrid Co-containing PONbs with the same polyanions but different Co contents. The Co-containing PONb with higher Co content exhibits superior hydrogen evolution reaction (HER) activity under highly alkaline conditions, which is better than the results for the similar Cu-containing PONb, highlighting the critical role of cobalt in improving HER performance. This study provides a new insight into the relationship between the structural properties of metal complexes during electrocatalysis.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/d4dt03071k | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Regulating the Crystallization and Morphology of PbI Precursor Films for the Growth of High-Quality Perovskite Films via Vapor-Solid Reaction.
ACS Appl Mater Interfaces
March 2025
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China.
Developing vapor-solid reaction methods to prepare organic-inorganic hybrid perovskite thin films is highly compatible with processes in crystalline silicon solar cells and the thin-film photovoltaic industries, facilitating rapid industrialization. In the vapor-solid reaction, the crystallization quality of perovskite thin films is widely influenced by the crystallinity and microstructure of lead iodide (PbI) precursor films. During the thermal evaporation process of preparing the PbI precursor films, we observed that PbI tends to develop a disordered surface morphology and exhibits high crystallinity, which significantly hinders the uniform diffusion of the organic amine salt vapor during the subsequent vapor-solid reaction.
View Article and Find Full Text PDFUV-ozone surface pretreatment for high quality ALD-grown ultrathin coatings on bismuth oxyhalide photocatalysts.
Nanoscale
March 2025
The Russell Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, Haifa 3200003, Israel.
The growth of ultrathin layers of oxides by atomic layer deposition (ALD) is well documented for oxide substrates such as SiO, BiO, AlO, in which oxygen is the only negatively charged atom. In contrast, the knowledge regarding ALD growth on substrates containing other negatively charged atoms, such as halogens, is quite limited. The commonly used bismuth oxyhalide (BiOX) family of materials are characterised by a low density of surface hydroxyls, required for the initiation of thermal ALD growth of oxides, thus hampering the ability to grow ultrathin layers of oxides on their surface.
View Article and Find Full Text PDFRealization of Tunable Ferroelectricity in Perovskite Crystals for Multidirectional Self-Driven Photodetection.
Angew Chem Int Ed Engl
March 2025
Chinese Academy of Sciences Fujian Institute of Research on the Structure of Matter, Fujian institute of research on structure of mater, yangqiao west road 155, 350002, fuzhou, CHINA.
Halide perovskite ferroelectrics endowed with a distinctive spontaneous polarization effect have been regarded as prospective electroactive materials and are prevalently utilized in solar cells, photoelectric detection, and other domains. Among them, multipolar-axis ferroelectrics featuring multiple equivalent polarization directions are particularly desirable for diverse areas of applications. Nevertheless, the design and regulation of multipolar axis perovskite ferroelectrics remains a significant challenge.
View Article and Find Full Text PDFEngineering magnetism in hybrid organic-inorganic metal halide perovskites.
Mater Horiz
March 2025
CIC nanoGUNE BRTA, 20018 Donostia-San Sebastián, Basque Country, Spain.
The chemical and structural flexibility of hybrid organic-inorganic metal halide perovskites (HOIPs) provides an ideal platform for engineering not only their well-studied optical properties, but also their magnetic ones. In this review we present HOIPs from a new perspective, turning the attention to their magnetic properties and their potential as a new class of on-demand low-dimensional magnetic materials. Focusing on HOIPs containing transition metals, we comprehensively present the progress that has been made in preparing, understanding and exploring magnetic HOIPs.
View Article and Find Full Text PDFFacile Synthesis of Ultramicroporous Organic-Linked Zincophosphate with High Thermal, Chemical and Water Stabilities.
Chemistry
March 2025
National Tsing Hua University, Chemistry Department, 101, Section 2, Kuang-Fu Road, 300044, Hsinchu, TAIWAN.
The application of ultramicroporous materials for CO2 separation is limited by the rarity of materials exhibiting stability and rapid scale-up characteristics. In this study, we propose a rational approach to enhance the structural stability and durability of the pillared layer structure. Through the topotactic replacement of protons with metal ions in the parent 4,4'-bipyridine (bpy)-pillared zincophosphate, we observed the formation of edge-sharing dimers of ZnO4N and PO4, as well as the insertion of (VOH2O)2+ into the zinc phosphate layers.
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!