Electrochemical reconstruction is a powerful tool for generating highly active oxygen evolution reaction (OER) catalysts. Utilizing electrochemical reconstruction to fabricate an OER active catalyst based on a hydrogen evolution reaction...

Boosting efficient alkaline fresh water and seawater electrolysis via electrochemical reconstruction

Carbon cloth supported flower-like porous nickel-based electrodes boosting ion/charge transfer characteristics of flexible supercapacitors

Review on S-Scheme Heterojunctions for Photocatalytic Hydrogen Evolution

The utilization of nanostructured materials as efficient catalyst for several processes has increased tremendously, and carbon-based nanostructured materials encompassing fullerene and its derivatives have been observed to possess enhanced catalytic activity when engineered with doping or decorated with metals, thus making them one of the most promising nanocage catalyst for hydrogen evolution reaction (HER) during electro-catalysis. Prompted by these, and the reported electrochemical, electronic and stability advantage, an attempt is put forward herein to inspect the metal encapsulated, doped, and decorated dependent HER activity of C24 engineered nanostructured materials as effective electro-catalyst for HER. Density functional theory (DFT) calculations have been utilized to evaluate the catalytic hydrogen evolution reaction activity of four proposed bare systems: fullerene (C24), calcium encapsulated fullerene (CaencC24), nickel-doped calcium encapsulated fullerene (NidopCaencC24), and silver decorated nickel-doped calcium encapsulated (AgdecNidopCaencC24) engineered nanostructured materials at the TPSSh/GenECP/6-311+G(d,p)/LanL2DZ level of theory. The obtained results divulged that, a potential decrease in energy gap (Egap) occurred in the bare systems, while a sparing increase was observed upon adsorption of hydrogen onto the surfaces, these surfaces where also observed to maintain the least EH-L gap while the AgdecNidopCaencC24 surface exhibited an increased electrocatalytic activity when compared to others. The results also showed that the electronic properties of the systems evinced a correspondent result with their electrochemical properties, the Ag-decorated surface also exhibited a proficient adsorption energy [Formula: see text] and Gibb's free energy (ΔGH) value. The engineered Ag-decorated and Ni-doped systems were found to possess both good surface stability and excellent electro-catalytic property for HER activities. 

/pdf/electrocatalytic-activity-of-metal-encapsulated-doped-and-hrtrahtq.pdf

Electrocatalytic activity of metal encapsulated, doped, and engineered fullerene-based nanostructured materials towards hydrogen evolution reaction

Supercapacitors have gained significant attention as energy storage devices due to their high specific power, fast charge–discharge rate and extended cycling stability. Recent research focuses on the search for new electrode materials to enhance the specific capacitance of supercapacitors. Conducting polymers (CPs) and metal oxides (MOs) are being extensively tested as electrode materials in supercapacitors. CPs have poor cycling stability and low mechanical strength but are easy to process, while MOs exhibit easy availability, variable oxidation states and possess high specific capacitance, but they are somewhat difficult to process. Therefore, combining both (CP) and (MO) in a composite offers better results for the electrochemical performance of supercapacitors. This review mainly focuses on the discussion of CP/MO based nanocomposites recently reported for supercapacitor applications. The collective information presented in this report will provide researchers a view into the latest developments in this field. The continued research on this topic will reveal further potential applications of CP/MO composites.

/pdf/an-overview-of-recent-advancements-in-conducting-polymer-1zo3qmmk.pdf

An Overview of Recent Advancements in Conducting Polymer–Metal Oxide Nanocomposites for Supercapacitor Application

Facile growth of hierarchical SnO2@PPy composites on carbon cloth as all-solid-state flexible supercapacitors

Hydrogen production performance and theoretical mechanism analysis of chain-like ZnO/ZnS heterojunction

Photocatalytic H2 evolution is regarded as an ideal approach to produce green energy. Here, a step‐scheme (S‐scheme) heterojunction of macro/mesoporous TiO2/g‐C3N4 photocatalysts with enhanced H2 evolution performance is constructed via a simple chemical vapor deposition process. It is found that the microstructure of samples can be easily controlled by adjusting the dosage of melamine. As compared to the respective monocomponent TiO2 and g‐C3N4, the H2 evolution rate of TiO2/g‐C3N4 S‐scheme heterojunction is greatly improved. The H2 evolution rate of the 20CT sample reaches the maximum value of 3211 μmol g−1 h−1, which is much higher than those of TiO2 and g‐C3N4 by factors of 27.2 and 7.5, respectively. In addition, through in‐depth analysis with photoluminescence, X‐ray photoelectron spectroscopy, and Mott–Schottky characterizations, a new mechanism of S‐scheme heterojunction is proposed for the obtained system. The formation of the S‐scheme heterojunction in TiO2/g‐C3N4 is therefore responsible for the observed photocatalytic performance enhancement, due to the efficient charge separation as well as the high redox ability.

CVD Assisted Synthesis of Macro/Mesoporous TiO2/g‐C3N4 S‐Scheme Heterojunction for Enhanced Photocatalytic Hydrogen Evolution

Size effect of ruthenium nanoparticles on water cracking properties with different crystal planes for boosting electrocatalytic hydrogen evolution.

Heterogeneous junction Ni-MOF@BiOBr composites: Photocatalytic degradation of methylene blue and ciprofloxacin

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