Urchin-like CoP/CuP heterostructured nanorods supported on a 3D porous copper foam for high-performance non-enzymatic electrochemical dopamine sensors.

In this study, we developed a high-performance non-enzymatic electrochemical sensor based on urchin-like CoP/CuP heterostructured nanorods supported on a three-dimensional porous copper foam, namely, CoP/CuP NRs/CF, for the detection of dopamine. Benefiting from the promising intrinsic catalytic activities of CoP and CuP, urchin-like microsphere structures, and a large electrochemically active surface area for exposing numerous accessible catalytic active sites, the proposed CoP/CuP NRs/CF shows extraordinary electrochemical response towards the electrocatalytic oxidation of dopamine. As a result, the CoP/CuP NRs/CF sensing electrode has a broad detection window (from 0.

Electrochemical conversion of CO to value-added chemicals over bimetallic Pd-based nanostructures: Recent progress and emerging trends.

Electrochemical conversion of CO to fuels and chemicals as a sustainable solution for waste transformation has garnered tremendous interest to combat the fervent issue of the prevailing high atmospheric CO concentration while contributing to the generation of sustainable energy. Monometallic palladium (Pd) has been shown promising in electrochemical CO reduction, producing formate or CO depending on applied potentials. Recently, bimetallic Pd-based materials strived to fine-tune the binding affinity of key intermediates is a prominent strategy for the desired product formation from CO reduction.

Solar-driven conversion of carbon dioxide over nanostructured metal-based catalysts in alternative approaches: Fundamental mechanisms and recent progress.

Solar-driven carbon dioxide (CO) conversion has gained tremendous attention as a prominent strategy to simultaneously reduce the atmospheric CO concentration and convert solar energy into solar fuels in the form of chemical bonds. Numerous efforts have been devoted to diverse photo-driven processes for CO conversion, which utilized a multidisciplinary strategy. Among them, the architecture of nanostructured metal-based catalysts is emerging as an eminent solution for the design of catalysts of this field.

Metal salt-modified biochars derived from agro-waste for effective congo red dye removal.

Anionic Congo red dye (CR) is not effectively removed by conventional adsorbents. Three novel biochars derived from agro-waste (Acacia auriculiformis), modified with metal salts of FeCl, AlCl, and CaCl at 500 °C pyrolysis have been developed to enhance CR treatment. These biochars revealed significant differences in effluents compared to BC, which satisfied initial research expectations (P < 0.

Boosting light-driven CO reduction into solar fuels: Mainstream avenues for engineering ZnO-based photocatalysts.

The realization of artificial photosynthesis in the photocatalytic CO transformation into valuable chemicals or solar fuels, such as CO, CH, HCOOH, and CHOH, by solar-light harvesting is a promising solution to both global-warming and energy-supply issues. Recently, zinc oxide (ZnO) has emerged as an excellent oxidative photocatalyst among non-titanium metal oxides due to its availability, outstanding semiconducting and optical properties, non-toxicity, affordability, and ease of synthesis. However, ZnO wide bandgap and inability to absorb in the visible region has demanded particular modification for its practical use as a sustainable photocatalyst.

Designing Atomically Dispersed Au on Tensile-Strained Pd for Efficient CO Electroreduction to Formate.

Pd is one of the most effective catalysts for the electrochemical reduction of CO to formate, a valuable liquid product, at low overpotential. However, the intrinsically high CO affinity of Pd makes the surface vulnerable to CO poisoning, resulting in rapid catalyst deactivation during CO electroreduction. Herein, we utilize the interaction between metals and metal-organic frameworks to synthesize atomically dispersed Au on tensile-strained Pd nanoparticles showing significantly improved formate production activity, selectivity, and stability with high CO tolerance.

Novel Architecture Titanium Carbide (TiCT) MXene Cocatalysts toward Photocatalytic Hydrogen Production: A Mini-Review.

Low dimensional transition metal carbide and nitride (MXenes) have been emerging as frontier materials for energy storage and conversion. TiCT was the first MXenes that discovered and soon become the most widely investigated among the MXenes family. Interestingly, TiCT exhibits ultrahigh catalytic activity towards the hydrogen evolution reaction.

Recent Advances in TiO-Based Photocatalysts for Reduction of CO to Fuels.

Titanium dioxide (TiO) has attracted increasing attention as a candidate for the photocatalytic reduction of carbon dioxide (CO) to convert anthropogenic CO gas into fuels combined with storage of intermittent and renewable solar energy in forms of chemical bonds for closing the carbon cycle. However, pristine TiO possesses a large band gap (3.2 eV), fast recombination of electrons and holes, and low selectivity for the photoreduction of CO.

Recent Progress in Carbon-Based Buffer Layers for Polymer Solar Cells.

Carbon-based materials are promising candidates as charge transport layers in various optoelectronic devices and have been applied to enhance the performance and stability of such devices. In this paper, we provide an overview of the most contemporary strategies that use carbon-based materials including graphene, graphene oxide, carbon nanotubes, carbon quantum dots, and graphitic carbon nitride as buffer layers in polymer solar cells (PSCs). The crucial parameters that regulate the performance of carbon-based buffer layers are highlighted and discussed in detail.

Photoelectrochemical CO Reduction with a Rhenium Organometallic Redox Mediator at Semiconductor/Aqueous Liquid Junction Interfaces.

Electrochemical and photoelectrochemical CO reductions were carried out with Re(bh-bipy)(CO) (OH ) cocatalysts in aqueous electrolytes. Competition between hydrogen evolution and CO reduction was observed under (photo)electrochemical conditions for both glassy carbon and CuInS electrodes. The partial current density for CO generation is limited even though the additional potential is applied.