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To enhance the activity of photocatalysts for hydrogen production and CO2 conversion, noble metal cocatalysts as electron traps and/or acceptors such as platinum or gold are usually utilized. This study hypothesizes that mixing elements…

Materials Science · Physics 2025-01-17 Jacqueline Hidalgo-Jiménez , Taner Akbay , Xavier Sauvage , Tatsumi Ishihara , Kaveh Edalati

We developed a facile and scalable 3-step hydrothermal, electrodeposition, and annealing technique to synthesize a variety of nanowire heterostructures. The heterojunction catalysts of CP-ZnO-MoS2 and CP-ZnO-ZnS-MoS2 both saw an increase in…

Materials Science · Physics 2025-03-10 Lee Kendall , Dawn Ford , Giovanni Zangari , Stephen McDonnell

Spin plays a key role in physical and chemical reactions, such as oxygen evolution and hydrogen evolution reactions (OER/HER); but the spin-activity correlation has remained unclear. Based on a transition metal (TM)-doped PtN2 monolayer…

Materials Science · Physics 2023-11-06 Tao Zhang , Lei Li , Tao Huang , Hui Wan , Wu-Yu Chen , Zi-Xuan Yang , Gui-Fang Huang , Wangyu Hu , Wei-Qing Hang

Low-cost transition metal high-entropy nanoalloys are emerging as sustainable alternatives to platinum group electrocatalysts. Synthesis conditions of single-phase solid solutions can alter phase stability, causing surface composition…

Electrochemical CO2 reduction (CO2R) offers a promising approach to decarbonize chemical manufacturing through production of carbon-neutral fuels. However, insufficient performance and instability of membrane electrode assembly (MEA)…

Neutron scattering is used to investigate the single-ion spin and orbital excitations below the Mott-Hubbard gap in CoO. Three excitations are reported at 0.870 $\pm$ 0.009 eV, 1.84 $\pm$ 0.03, and 2.30 $\pm$ 0.15 eV. These were…

Strongly Correlated Electrons · Physics 2015-06-17 R. A. Cowley , W. J. L. Buyers , C. Stock , Z. Yamani , C. Frost , J. W. Taylor , D. Prabhakaran

The design of efficient electrocatalysts for electrochemical water splitting with minimal amount of precious metal is crucial to attain renewable and sustainable energy conversion. Here, we report the use of a network of CdSe branched…

Self-supported electrocatalysts being generated and employed directly as electrode for energy conversion has been intensively pursued in the fields of materials chemistry and energy. Herein, we report a synthetic strategy to prepare…

The development of efficient and cost-effective catalysts for clean energy conversion remains a central challenge in materials science. Although platinum serves as the benchmark catalyst, its scarcity and high cost hinder large-scale…

High-entropy oxide (HEO) thermodynamics transcend temperature-centric approaches, spanning a multidimensional landscape where oxygen chemical potential plays a decisive role. Here, we experimentally demonstrate how controlling the oxygen…

We report fabrication and characteristics of an organic monolayer based Metal Oxide Semiconductor (MOS) device. In place of SiO2 oxide layer in the MOS configuration, we used 1H, 1H, 2H, 2H- perfluorooctyl trichlorosilane (FOTS)…

Mesoscale and Nanoscale Physics · Physics 2014-09-24 Rosilin George , U. Satheesh , J. Cyril Robinson Azariah , D. Devaprakasam

Layered double-hydroxides (LDHs) are superior to the conventional (Transition Metal Oxides) TMOs as their lamellar morphology accommodates higher active sites contributing to the facile electron transfer towards the material degradation…

Hydrogen peroxide (H2O2) formation rates in a proton exchange membrane (PEM) fuel cell anode and cathode were estimated as a function of humidity and temperature by studying the oxygen reduction reaction (ORR) on a rotating ring disc…

MoS2 are facile, stable, non-toxic, affordable materials with reasonable price, and have exhibit its superior potential in catalysis, sensing, opt electrochemical, environmental relate application1, etc. Modification of MoS2 materials has…

Materials Science · Physics 2020-12-03 Yang Cao

The formation and electronic properties of nitrogen-related defect complexes in $\beta-Ga_2O_3$ are investigated using first-principles calculations. Starting from the energetically favorable $N_{i9}-N_{OI}$ configuration, nitrogen atoms…

Materials Science · Physics 2026-05-13 Asiyeh Shokri , Yevgen Melikhov , Yevgen Syryanyy , Maryna Chernyshova , Iraida N. Demchenko

Electrochemical reactions for hydrogen and hydrogen peroxide production are essential for energy conversion to diminish energy crisis, but still lack efficient electrocatalysts. Development of non\-noble metal bifunctional electrocatalysts…

Materials Science · Physics 2023-05-02 Antonia Kagkoura , Christina Stangel , Raul Arenal , Nikos Tagmatarchis

The photocatalytic production of hydrogen peroxide (H$_2$O$_2$) from water is a promising strategy for solar-to-chemical energy conversion. Herein, we investigate the effect of metal-free heteroatom doping (B, O, P, and S) on the…

Recently, avalanche multiplication has been observed in TMDC-based FETs, enhancing sensor performance with high sensitivity. However, the high voltage required for operation can damage the FETs, making it crucial to reduce the breakdown…

Applied Physics · Physics 2024-09-13 Xiaofan Cai , Ruichang Chen , Xu Gao , Meili Yuan , Haixia Hu , Hang Yin , Yuanyuan Qu , Yang Tan , Feng Chen

The efficiency of $H_2$ production via water electrolysis is typically limited to the sluggish oxygen evolution reaction (OER). As such, significant emphasis has been placed upon improving the rate of OER through the anode catalyst. More…

Improving the stability of electrocatalysts for the oxygen evolution reaction (OER) through materials design has received less attention than improving their catalytic activity. We explored the effect of Mn addition to a cobalt oxide for…

Materials Science · Physics 2022-02-23 Javier Villalobos , Dulce M. Morales , Denis Antipin , Götz Schuck , Ronny Golnak , Jie Xiao , Marcel Risch