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Self‐assembly of colloidal nanoparticles enables the easy building of assembly units into higher‐order structures and the bottom‐up preparation of functional materials. Nickel phosphides represent an important group of catalysts for hydrogen evolution reaction (HER) from water splitting. In this paper, the preparation of porous nickel phosphide superparticles and their HER efficiencies are reported...
Metal nanoclusters providing maximized atomic surface exposure offer outstanding hydrogen evolution activities but their stability is compromised as they are prone to grow and agglomerate. Herein, a possibility of blocking metal ion diffusion at the core of cluster growth and aggregation to produce highly active Ru nanoclusters supported on an N, S co‐doped carbon matrix (Ru/NSC) is demonstrated....
Combining the methanol oxidation reaction (MOR) and hydrogen evolution reaction (HER) within an integrated electrolytic system may offer the advantages of enhanced kinetics of the anode, reduced energy consumption, and the production of high‐purity hydrogen. Herein, it is reported the construction of Ni─MoN nanorod arrays supported on a nickel foam substrate (Ni─MoN/NF) as a bifunctional electrocatalyst...
Covalent organic frameworks (COFs) with precisely controllable structures and highly ordered porosity possess great potential as electrocatalysts for hydrogen evolution reaction (HER). However, the catalytic performance of pristine COFs is limited by the poor active sites and low electron transfer. Herein, to address these issues, the conductive carbon nanotubes (CNTs) are coated by a defined structure...
Upgrading overall water splitting (OWS) system and developing high‐performance electrocatalysts is an attractive way to the improve efficiency and reduce the consumption of hydrogen (H2) production from electrolyzed water. Here, a Pt cluster/Ir metallene heterojunction structure (Pt/Ir hetero‐metallene) with a unique Pt/Ir interface is reported for the conversion of ethylene glycol (EG) to glycolic...
The high activity of water molecules results in a series of awful parasitic reaction, which seriously impede the development of aqueous zinc batteries. Herein, a new gel electrolyte with multiple molecular anchors is designed by employing natural biomaterials from chitosan and chlorophyll derivative. The gel electrolyte firmly anchors water molecules by ternary hydrogen bonding to reduce the activity...
As an important half‐reaction for electrochemical water splitting, electrocatalytic hydrogen evolution reaction suffers from sluggish kinetics, and it is still urgent to search high efficiency non‐platinum‐based electrocatalysts. Mo‐based catalysts such as Mo2C, MoO2, MoP, MoS2, and MoNx have emerged as promising alternatives to Pt/C owing to their similar electronic structure with Pt and abundant...
Amorphous/crystalline (a/c) hetero‐phase structures are considered as a class of efficient electrocatalysts for hydrogen evolution reaction (HER), but it remains a substantial challenge to obtain the specific phase by phase‐selective synthesis. In this work, a general route for the preparation of various heterogeneous aerogels (RuB, PtB, PdB, and RhB) consisting of amorphous and crystalline phases...
Selective oxidation of biomass‐based molecules to high‐value chemicals in conjunction with hydrogen evolution reaction (HER) is an innovative photocatalysis strategy. The key challenge is to design bifunctional photocatalysts with suitable band structures, which can achieve highly efficient generation of high‐value chemicals and hydrogen. Herein, NiS/Cd0.6Zn0.4S Schottky junction bifunctional catalysts...
Surface modification of electrocatalysts to obtain new or improved electrocatalytic performance is currently the main strategy for designing advanced nanocatalysts. In this work, highly dispersed amorphous molybdenum trisulfide‐anchored Platinum nanodendrites (denoted as Pt‐a‐MoS3 NDs) are developed as efficient hydrogen evolution electrocatalysts. The formation mechanism of spontaneous in situ polymerization...
Metallene with outstanding physicochemical properties is an efficient two‐dimensional electrocatalysts for sustainable hydrogen (H2) production applications. However, the controllable fabrication of extended atomically thin metallene nanoribbons remains a formidable challenge. Herein, this work proposes a controllable preparation strategy for atomically thin defect‐rich PdIr bimetallene nanoribbons...
The utilization of thermodynamically favorable sulfur oxidation reaction (SOR) as an alternative to sluggish oxygen evolution reaction is a promising technology for low‐energy H2 production while degrading the sulfur source from wastewater. Herein, amorphous/crystalline S‐doped Pd nanosheet arrays on nickel foam (a/c S‐Pd NSA/NF) is prepared by S‐doping crystalline Pd NSA/NF. Owing to the ultrathin...
Delicate electrochemical active surface area (ECSA) engineering over the exposed catalytic interface and surface topology of platinum‐based nanomaterial represents an effective pathway to boost its catalytic properties toward the clean energy conversion system. Here, for the first time, the facial and universal production of dendritic Pt‐based nanoalloys (Pt‐Ni, Co, Fe) with highly porous feature...
The rational design of ingenious strategies to boost the intrinsic activity and stability of ruthenium (Ru) is of great importance for the substantial progression of water electrolysis technology. Based on Mott–Schottky effect, electronic regulation within a metal/semiconductor hybrid electrocatalyst represents a versatile strategy to boost the electrochemical performance. Herein, a typical Mott–Schottky...
An RhFe bimetallene with Fe atoms doped into Rh host for efficient hydrogen evolution reaction (HER), is constructed. When two doped Fe atoms occupy neighboring asymmetric spatial positions, their asymmetric exchange interaction drives electron hopping between the dxy orbital of a Fe atom and the dz2 orbital of its neighboring Fe atom to push the d band center closer to the Fermi level as a result...
In heterogeneous catalysis, metal particle morphology and size can influence markedly the activity. It is of great significance to rationally design and control the synthesis of Pt at the atomic level to demonstrate the structure‐activity relationship toward electrocatalysis. Herein, a powerful strategy is reported to synthesize graphene‐supported platinum‐based electrocatalyst, that is, nanocatalysts...
Tailoring the morphology and crystal structure of metallene is critical to improve its electrocatalytic performance. In this work, hetero‐phase RhB metallene (h‐RhB metallene) with amorphous/crystalline structure is readily prepared by a two‐step method. The h‐RhB metallene is very unique in its non‐metallic heteroatom doping and amorphous/crystalline structure. Benefiting from the unique metallene...
Pre‐catalyst reconstruction in electrochemical processes has recently attracted intensive attention with mechanistic potentials to uncover really active species and catalytic mechanisms and advance targeted catalyst designs. Here, nickel‐molybdenum oxysulfide is deliberately fabricated as pre‐catalyst to present a comprehensive study on reconstruction dynamics for the oxygen evolution reaction (OER)...
The intercrystalline interfaces have been proven vital in heterostructure catalysts. However, it is still challenging to generate specified heterointerfaces and to make clear the mechanism of a reaction on the interface. Herein, this work proposes a strategy of Fe‐catalyzed cascade formation of heterointerfaces for comprehending the hydrogen evolution reaction (HER). In the pure solid‐phase reaction...
Rational design of low‐cost, highly efficient, and stable electrocatalysts for the hydrogen evolution reaction (HER) has attracted wide attention. Herein, 3D RuCu nanocrystals (NCs) are successfully synthesized by a facile wet chemistry method, in which amorphous RuCu nanosheets are directly grown on crystalline Cu nanotubes (NTs). Importantly, the obtained 3D RuCu NCs only need 18 and 73 mV to deliver...
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