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Synthesis and performance evaluation of ZnO/CdS photoanodes with copper sulfide (CuS) and carbon counter electrodes.
Sci Rep
December 2024
Advanced Physics Laboratory, Department of Physics, Savitribai Phule Pune University, Pune, Maharashtra, 411007, India.
The present study demonstrates the synthesis of compact ZnO layers using CdS sensitized on ZnO as a photoanode with copper sulfide (CuS) and carbon as a counter electrode (CE). In this study, a compact ZnO layer was fabricated using the simple and low-cost successive ionic layer adsorption and reaction (SILAR) method, and CuS CE films were synthesized using the chemical bath deposition method. Various characterizations, such as X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS), confirmed the formation of ZnO and CdS sensitizations on the ZnO .
View Article and Find Full Text PDFUltrahigh concentration exfoliation and aqueous dispersion of few-layer graphene by excluded volume effect.
Nat Commun
December 2024
Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria, Australia.
Colloidal properties of nanoparticles are intricately linked to their morphology. Traditionally, achieving high-concentration dispersions of two-dimensional (2D) nanosheets has proven challenging as they tend to agglomerate or re-stack under increased surface contact and Van der Waals attraction. Here, we unveil an excluded volume effect enabled by 2D morphology, which can be coupled with electrostatic repulsion to synthesize high-concentration aqueous graphene dispersions.
View Article and Find Full Text PDFElectrochemically synthesized HO at industrial-level current densities enabled by in situ fabricated few-layer boron nanosheets.
Nat Commun
December 2024
Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, 210037, China.
Carbon nanomaterials show outstanding promise as electrocatalysts for hydrogen peroxide (HO) synthesis via the two-electron oxygen reduction reaction. However, carbon-based electrocatalysts that are capable of generating HO at industrial-level current densities (>300 mA cm) with high selectivity and long-term stability remain to be discovered. Herein, few-layer boron nanosheets are in-situ introduced into a porous carbon matrix, creating a metal-free electrocatalyst (B-C) with HO production rates of industrial relevance in neutral or alkaline media.
View Article and Find Full Text PDFFacile synthesis of nanoporous Mg crystalline structure by organic solvent-based reduction for solid-state hydrogen storage.
Nat Commun
December 2024
Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.
Nanoporous metals have unique potentials for energy applications with a high surface area despite the percolating structure. Yet, a highly corrosive environment is required for the synthesis of porous metals with conventional dealloying methods, limiting the large-scale fabrication of porous structures for reactive metals. In this study, we synthesize a highly reactive Mg nanoporous system through a facile organic solution-based approach without any harsh etching.
View Article and Find Full Text PDFToward Green Liquid Nitrogen Fertilizer Synthesis: Plasma-Driven Nitrogen Oxidation and Partial Electrocatalytic Reduction.
Adv Sci (Weinh)
December 2024
State Key Laboratory of Electrical Insulation and Power Equipment, Centre for Plasma Biomedicine, Xi'an Jiaotong University, Xi'an, 710049, P. R. China.
Liquid fertilizers, particularly when integrated with precision irrigation systems, offer a more efficient and sustainable alternative to traditional solid nitrogen fertilizers. The industrial production of ammonium nitrate (NHNO) is environmentally detrimental due to its reliance on fossil fuels. This study introduces an innovative air-to-NOx-to-NHNO pathway for synthesizing liquid nitrogen fertilizer.
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