Enhanced electrochemical performance of CuO/NiO/rGO for oxygen evolution reaction

Article Chemistry, Multidisciplinary

Preparation of rGO/MnO2 Composites through Simultaneous Graphene Oxide Reduction by Electrophoretic Deposition

Hariyati Purwaningsih et al.

Summary: This study successfully prepared manganese dioxide nanoparticles and graphene oxide composites reduced by an electrophoretic deposition process, showing excellent electrocatalytic performance.

ACS OMEGA (2022)

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Review Chemistry, Physical

Recent Development and Future Perspectives of Amorphous Transition Metal-Based Electrocatalysts for Oxygen Evolution Reaction

Tianqi Guo et al.

Summary: This review introduces the assessment criteria, theoretical modeling, and applications of amorphous transition metal-based OER electrocatalysts. These amorphous materials have advantages such as more active sites, broader chemical composition range, and greater structural flexibility, providing valuable guidance in designing highly efficient and stable OER electrocatalysts for future energy applications.

ADVANCED ENERGY MATERIALS (2022)

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Article Environmental Sciences

CuO-NiO binary transition metal oxide nanoparticle anchored on rGO nanosheets as high-performance electrocatalyst for the oxygen reduction reaction

Nagarani Sandhiran et al.

Summary: In this study, CuO-NiO/rGO nanocomposites were prepared using a simple and cost-effective method, and their electrochemical properties in an alkaline medium were investigated. The results showed that CuO-NiO/rGO exhibited high current density, low Tafel slope, and low hydrogen peroxide yield, and the oxygen reduction reaction occurred via an efficient four-electron pathway.

ENVIRONMENTAL RESEARCH (2022)

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Article Chemistry, Multidisciplinary

Tin Oxide (SnO2)-Decorated Reduced Graphene Oxide (rGO)-Based Hydroelectric Cells to Generate Large Current

Aarti et al.

Summary: Nonphotocatalytic water splitting through oxygen-deficient, mesoporous metal oxide design-based hydroelectric cells (HECs) is a well-known phenomenon. In this study, oxygen-deficient mesoporous SnO2 and its composites with reduced graphene oxide (rGO) were used to achieve water splitting. The addition of rGO increased the surface area and peak current of the materials, resulting in a higher power output from the hydroelectric cell.

ACS OMEGA (2022)

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Article Chemistry, Physical

Efficient FeCoNiCuPd thin-film electrocatalyst for alkaline oxygen and hydrogen evolution reactions

Shiqi Wang et al.

Summary: In this study, a high entropy alloy (HEA) - FeCoNiCuPd - thin film catalyst was reported to exhibit excellent catalytic performance for both alkaline HER and OER. The remarkable HER activity originated from the multiple active sites on the FeCoNiCuPd surface, while the OER activity was attributed to the formation of highly functional (FeCoNi)-oxyhydroxide species on the film surface. The HEA thin film catalyst showed the potential for efficient water-splitting process at low cell voltage and maintained good durability.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

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Review Chemistry, Physical

Multifunctional materials for photo-electrochemical water splitting

P. Mary Rajaitha et al.

Summary: This review highlights the application of multifunctional materials in photo-electrochemical water splitting for efficient hydrogen production. Different types of water-splitting methods and the selection of multifunctional materials can lead to improved results.

JOURNAL OF MATERIALS CHEMISTRY A (2022)

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Article Polymer Science

Photo-Catalytic and Anti-microbial Activities of rGO/CuO Nanocomposite

Saima Siddique et al.

Summary: A cost-effective rGO/CuO nanocomposite was synthesized by a simple chemical method, which showed excellent photocatalytic degradation and antimicrobial activities.

JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS (2021)

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Article Chemistry, Physical

Optimized performance of nickel in crystal-layered arrangement of NiFe2O4/rGO hybrid for high-performance oxygen evolution reaction

Pratik Shinde et al.

Summary: The paper presents a synthesis method and performance characterization of an efficient and reliable NiFe2O4/rGO hybrid OER electrocatalyst. The optimized catalyst exhibits excellent OER performance in alkaline 1M KOH solution, displaying high activity and stability.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2021)

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Review Chemistry, Inorganic & Nuclear

Material libraries for electrocatalytic overall water splitting

Lan Sun et al.

Summary: Water electrolysis is crucial for hydrogen generation, requiring efficient electrocatalysts; Recent advancements include strategies like nanoarchitecturing and heteroatomic doping to enhance electrocatalyst performance; Challenges and opportunities lie ahead for improving water splitting performance.

COORDINATION CHEMISTRY REVIEWS (2021)

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Article Energy & Fuels

Recent advancements of copper oxide based nanomaterials for supercapacitor applications

Dipanwita Majumdar et al.

Summary: Copper oxides have been established as important materials for advanced energy storage applications due to their unique advantages. Recent advancements in copper oxide based nanosystems for designing better electrode materials for advanced supercapacitors have been summarized, with a focus on capacitive behavior and correlating morphology obtained via different synthetic procedures.

JOURNAL OF ENERGY STORAGE (2021)

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Article Chemistry, Multidisciplinary

Tuning the Oxygen Content of Reduced Graphene Oxide and Effects on Its Properties

Wei Liu et al.

Summary: Recovering the properties of graphene through reduction processes involves removing oxygen atoms, though residual oxygen atoms and lattice defects still limit the recovery of the original properties. It is crucial to select a chemical process that allows for fine tuning of residual oxygen content and thus adjusting the properties of the final product. In this study, a chemical-processing technique using hydroiodic acid successfully tuned the oxygen content from 33.6% to 10.7%, showcasing precise control over material properties.

ACS OMEGA (2021)

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Article Materials Science, Multidisciplinary

Structure Investigation by Neutron Diffraction and X-Ray Diffraction of Graphene Nanocomposite CuO-rGO Prepared by Low-Cost Method

Seham K. Abdel-Aal et al.

Summary: A graphene nanocomposite of CuO-rGO was synthesized through a simple precipitation reaction, which confirmed the reduction of graphene oxide and the formation of CuO-rGO. CuO nanocrystals were found to be uniformly distributed on graphene sheets. Characterization by various techniques, including XRD and XPS, indicated the formation of a single phase of CuO monoclinic crystal system.

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE (2021)

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Review Chemistry, Multidisciplinary

Vacancy Engineering in Transition Metal Sulfide and Oxide Catalysts for Hydrodeoxygenation of Lignin-Derived Oxygenates

Sinan Jiang et al.

Summary: This Minireview discusses the design methods of vacancy engineering in lignin-derived oxygenates, clarifies the effects of vacancies on the reaction and catalysts, and proposes strategies to address current deficiencies in this field.

CHEMSUSCHEM (2021)

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Article Engineering, Electrical & Electronic

Facile synthesis of CuO nanoribbons/rGO nanocomposites for high-performance formaldehyde gas sensor at low temperature

Zhichen Lu et al.

Summary: The CuO nanoribbons/rGO nanocomposites synthesized in this study exhibit superior gas-sensing properties for ultra-low concentration formaldehyde (HCHO) detections at low temperature, with a fast response and recovery time. The mesoporous structure, large specific surface area, and excellent charge carriers transport properties contribute to their remarkable sensing performance and wide application prospects in the future for monitoring and detecting HCHO at low temperature.

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS (2021)

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Article Chemistry, Physical

In Situ Synthesis of NiO/CuO Nanosheet Heterostructures Rich in Defects for Efficient Electrocatalytic Oxygen Evolution Reaction

Hai-Jing Yin et al.

Summary: A NiO and CuO heterostructured nanosheet rich in defects was synthesized via in situ electrochemical oxidation, showing high OER activity and a small Tafel slope. The excellent catalytic performance can be attributed to electron interactions between NiO and CuO, as well as the abundant defects and exposed active sites on the heterostructured nanosheet.

JOURNAL OF PHYSICAL CHEMISTRY C (2021)

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Review Chemistry, Multidisciplinary

Rational Design and Growth of MOF-on-MOF Heterostructures

Lulu Chai et al.

Summary: Multiporous metal-organic frameworks (MOFs) are highly crystalline inorganic-organic materials with high surface areas and tunable pores, while heterostructured MOF-on-MOF composites exhibit unprecedented performance and structural advantages. By assembling MOFs with different structures and morphologies, dual composites show unique tunability and synergistic effects.

SMALL (2021)

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Review Chemistry, Multidisciplinary

Recent advances in activating surface reconstruction for the high-efficiency oxygen evolution reaction

Likun Gao et al.

Summary: Recent advancements in the development of cost-effective and high-efficiency transition metal-based electrocatalysts have led to a better understanding of the dynamic reconstruction of surface structures during electrocatalytic water oxidation, especially the anodic oxygen evolution reaction (OER). Through operando and in situ techniques, it has been found that electrocatalysts undergo surface reconstruction to form actual active species during OER in alkaline solution. By exploring issues such as initiators for surface reconstruction and establishing relationships between structure, composition, and electrocatalytic activity, progress has been made in the rational manipulation of in situ catalyst surface reconstruction for the development of high-efficiency electrocatalysts.

CHEMICAL SOCIETY REVIEWS (2021)

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Article Chemistry, Multidisciplinary

High efficiency solar desalination and dye retention of plasmonic/reduced graphene oxide based copper oxide nanocomposites

Doaa A. Kospa et al.

Summary: This study introduces a novel solar thermal evaporation system based on plasmonic copper oxide/reduced graphene oxide (rGO) for efficient solar absorption and stable desalination of seawater.

RSC ADVANCES (2021)

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Article Energy & Fuels

Oxygen evolution reaction (OER) mechanism under alkaline and acidic conditions

Qiuhua Liang et al.

Summary: Density functional theory (DFT) simulations of the oxygen evolution reaction (OER) are important for understanding the limitations of water splitting, but the differences between experimental conditions under alkaline and calculations under acidic environments require a pH-dependent correction factor. This paper derives a theory to simulate the OER based on the alkaline reaction mechanism and compares mechanisms for alkaline and acidic OER catalysis, explaining the differences between experimental and calculated results.

JOURNAL OF PHYSICS-ENERGY (2021)

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Article Multidisciplinary Sciences

A Novel Approach to Synthesize Reduced Graphene Oxide (RGO) at Low Thermal Conditions

Papari Das et al.

Summary: Reduced graphene oxide (RGO) obtained through low-temperature thermal reduction at 50 degrees C from graphene oxide (GO) precursor synthesized by a non-toxic and non-explosive method exhibits high quality with retention of sp(2) structures. Characterizations through XRD, FTIR, Raman spectroscopy, SEM, and EDX confirmed efficient oxidation and reduction processes in producing GO and RGO-4 with decreased defects density in RGO-4.

ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING (2021)

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Co-Fe binary metal oxide electrocatalyst with synergistic interface structures for efficient overall water splitting

William Adamson et al.

CATALYSIS TODAY (2020)

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A Low-Temperature Molecular Precursor Approach to Copper-Based Nano-Sized Digenite Mineral for Efficient Electrocatalytic Oxygen Evolution Reaction

Biswarup Chakraborty et al.

CHEMISTRY-AN ASIAN JOURNAL (2020)

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Article Chemistry, Physical

Effect of cation substitution in MnCo2O4 spinel anchored over rGO for enhancing the electrocatalytic activity towards oxygen evolution reaction (OER)

A. Rebekah et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2020)

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Physical characterization of CuO thin films obtained by thermal oxidation of vacuum evaporated Cu

R. Djebian et al.

SOLID STATE SCIENCES (2020)

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Article Chemistry, Physical

Ni2P/rGO/NF Nanosheets As a Bifunctional High-Performance Electrocatalyst for Water Splitting

Jinyu Huang et al.

MATERIALS (2020)

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Research Progress on Porous Carbon Supported Metal/Metal Oxide Nanomaterials for Supercapacitor Electrode Applications

Pitchaimani Veerakumar et al.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2020)

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Emerging technologies by hydrogen: A review

Norazlianie Sazali

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2020)

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Stabilization by Configurational Entropy of the Cu(II) Active Site during CO Oxidation on Mg0.2Co0.2Ni0.2Cu0.2Zn0.2O

Martina Fracchia et al.

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The fabrication of hierarchically porous carbon-coated nickel oxide nanomaterials with enhanced electrochemical properties

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Graphene quantum dot based materials for sensing, bio-imaging and energy storage applications: a review

Y. Ravi Kumar et al.

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Compositional engineering of sulfides, phosphides, carbides, nitrides, oxides, and hydroxides for water splitting

Yiqiang Sun et al.

JOURNAL OF MATERIALS CHEMISTRY A (2020)

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Ni/NiO@rGO as an efficient bifunctional electrocatalyst for enhanced overall water splitting reactions

Shankar S. Narwade et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2019)

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Electronic and Structural Engineering of Carbon-Based Metal-Free Electrocatalysts for Water Splitting

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Facile synthesis of hollow Co3O4-embedded carbon/reduced graphene oxides nanocomposites for use as efficient electrocatalysts in oxygen evolution reaction

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Enhanced electrochemical performance of CuO/NiO/rGO for oxygen evolution reaction

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