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Effective regulation of the morphology of transition metal spinel structures is crucial for creating efficient and stable bifunctional catalysts for electrocatalysis of water. In this work, micro-flower NiCo2O4 (F-NCO) assembled by…

Chemical Physics · Physics 2024-03-27 Yujie Wang , Yan Duan , Yuwen Chen , Man Zhang , Yuchen Wang , Bin Liu , Xiaodie Zhang , Yutong Zhang , Kai Yan

The quest for efficient and scalable thermoelectric materials has catalyzed intense interest in quasi 1D nanoribbons, where reduced dimensionality and structural tunability can decouple key transport parameters to enhance energy conversion.…

Mesoscale and Nanoscale Physics · Physics 2025-07-18 Kalpana Panneerselvam , Swastik Sahoo , Bhaskaran Muralidharan

Hydrogen as the cleanest energy carrier is a promising alternative renewable resource to fossil fuels. There is an ever-increasing interest in exploring efficient and cost-effective approaches of hydrogen production. Recent experiments have…

Materials Science · Physics 2023-08-29 Zheng Shu , Yongqing Cai

Hexagonal boron nitride (h-BN) is a critical material for 2D electronic devices for graphene and has attracted a considerable amount of attention owing to its structural similarity and semiconducting property. However, modifying its…

Applied Physics · Physics 2019-11-12 Jerome A. Cuenca , Soumen Mandal , Malcolm Snowball , Adrian Porch , Oliver A. Williams

A new model for the intermediate compound of the hydrogen evolution reaction (HER) is proposed, for the electrochemical reduction of hydrogen in the presence of bisulfate on platinum(111). The formation of this compound, a regular 2…

Chemical Physics · Physics 2007-05-23 L. Blum , Dale A. Huckaby

The present study investigates the catalytic performance of a $hg-C_{3}N_{4}$ quantum dot aimed at enhancing electrochemical water splitting, using the first-principles density functional theory. The size of the considered quantum dot lies…

Materials Science · Physics 2024-08-08 Khushboo Dange , Vaishali Roondhe , Alok Shukla

By a combination of the first-principles calculations and climbing image nudged elastic band method (ciNEB) we investigate structure stabilities and hydrogen evolution reaction (HER) performance of monolayer 2H-CrS2. The results suggest the…

Materials Science · Physics 2020-10-06 Feng Sun , Aijun Hong , Wenda Zhou , Cailei Yuan , Wei Zhang

To satisfy rising energy needs and to handle the forthcoming worldwide climate transformation, major research attention has been drawn to environmentally friendly, renewable, and abundant energy resources. Hydrogen plays an ideal and…

Materials Science · Physics 2022-07-19 Rupali Jindal , Vaishali Sharma , Alok Shukla

Zigzag edges of neutral armchair-oriented Graphene Nano-Ribbons show states strongly localized at those edges. They behave as free radicals that can capture electrons during processing, increasing ribbon's stability. Thus, charging and its…

Mesoscale and Nanoscale Physics · Physics 2019-07-26 E. Louis , E. San-Fabian , G. Chiappe , J. A. Verges

Quasi-1D nanowires of topological insulators are emerging candidate structures in superconductor hybrid architectures for the realization of Majorana fermion based quantum computation schemes. It is however technically difficult to both…

Experimentally observation of borophene nanoribbons (BNRs) motivated us to carry out a comprehensive investigation on BNRs, decomposed from {\chi}_3 sheet, using density functional theory. Our results show that the stability and also the…

Materials Science · Physics 2018-04-12 S. I. Vishkayi , M. B. Tagani

Recently synthesized two-dimensional (2D) boron, borophene, exhibits a novel metallic behavior rooted in the s-p orbital hybridization, distinctively different from other 2D materials such as sulfides/selenides and semi-metallic graphene.…

Graphene/hexagonal boron nitride (G/$h$-BN) heterostructures offer an excellent platform for developing nanoelectronic devices and for exploring correlated states in graphene under modulation by a periodic superlattice potential. Here, we…

Mesoscale and Nanoscale Physics · Physics 2018-03-14 Jiayu Li , Li Lin , Guang-Yao Huang , N. Kang , Jincan Zhang , Hailin Peng , Zhongfan Liu , H. Q. Xu

The design and development of inexpensive highly efficient electrocatalysts for hydrogen production, underpins several emerging clean-energy technologies. In this work, for the first time, molybdenum disulfide (MoS2) nanodots have been…

Materials Science · Physics 2015-07-02 John Benson , Meixian Li , Shuangbao Wang , Peng Wang , Pagona Papakonstantinou

Graphene nanoribbons are semiconductor nanostructures with great potentials in nanoelectronics. Their realization particularly with small lateral dimensions below a few nanometers, however, remains challenging. Here we theoretically analyze…

Mesoscale and Nanoscale Physics · Physics 2015-05-14 Valentina Tozzini , Vittorio Pellegrini

Molecular dynamics simulations show that a graphene nanoribbon with alternating regions which are one and three hexagons wide can transform into a hybrid 1D nanoobject with alternating double chains and polycyclic regions under electron…

Materials carrying topological surface states (TSS) provide a fascinating platform for the hydrogen evolution reaction (HER). Based on systematic first-principles calculations for $A_3 B$ ($A$ = Ni, Pd, Pt; $B$ = Si, Ge, Sn), we propose…

Materials Science · Physics 2024-09-09 Ming-Chun Jiang , Guang-Yu Guo , Motoaki Hirayama , Tonghua Yu , Takuya Nomoto , Ryotaro Arita

Hydrogen production via the Hydrogen Evolution Reaction (HER) is critical for sustainable energy solutions, yet the reliance on expensive platinum (Pt) catalysts limits scalability. Zirconium-doped (\ce{Zr}-doped) MXenes, such as \ce{Ti3C2}…

Materials Science · Physics 2025-01-28 Shrestha Dutta , Rudra Banerjee

Biphenylene nanotubes (BPNNTs) represent a novel class of carbon-based nanomaterials, constructed by rolling a biphenylene network (BPN) monolayer into a one-dimensional tubular structure. In this study, the thermal transport properties of…

Materials Science · Physics 2025-09-24 Jhionathan de Lima , Cristiano F. Woellner

Graphynes offer a chemically heterogeneous $sp/sp^{2}$ carbon framework with distinct electronic regimes and site-selective reactivity. Here, Density Functional Theory and Reactive Molecular Dynamics Simulations are combined to evaluate…