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165 Results Found

  • Article
  • Open Access
5 Citations
3,695 Views
28 Pages

19 January 2021

Electron emission (EE) from real metal surfaces occurring during sliding contact with a polytetrafluoroethylene (PTFE) rider has been investigated using the thermodynamic data of metal oxides and the X-ray photoelectron spectroscopy (XPS) intensity r...

  • Article
  • Open Access
6 Citations
4,762 Views
17 Pages

Se–Cl Interactions in Selenite Chlorides: A Theoretical Study

  • Sergey V. Krivovichev and
  • Liudmila A. Gorelova

29 April 2018

The Se–Cl interactions in five selenite chlorides (α,β-Zn2(SeO3)Cl2 (sofiite and its polymorph), α,β-Cu5O2(SeO3)2Cl2 (georgbokiite and parageorgbokiite), and KCdCu7O2(SeO3)2Cl9 (burnsite)) have been investigated by means o...

  • Article
  • Open Access
4 Citations
2,444 Views
11 Pages

Water-Processed Ultrathin Crystalline Indium–Boron–Oxide Channel for High-Performance Thin-Film Transistor Applications

  • Wangying Xu,
  • Tao Peng,
  • Yujia Li,
  • Fang Xu,
  • Yu Zhang,
  • Chun Zhao,
  • Ming Fang,
  • Shun Han,
  • Deliang Zhu and
  • Peijiang Cao
  • + 2 authors

29 March 2022

Thin-film transistors (TFTs) made of solution-processable transparent metal oxide semiconductors show great potential for use in emerging large-scale optoelectronics. However, current solution-processed metal oxide TFTs still suffer from relatively p...

  • Article
  • Open Access
37 Citations
5,405 Views
14 Pages

Sol-Gel Synthesized High Entropy Metal Oxides as High-Performance Catalysts for Electrochemical Water Oxidation

  • Muhammad Asim,
  • Akbar Hussain,
  • Safia Khan,
  • Javeria Arshad,
  • Tehmeena Maryum Butt,
  • Amina Hana,
  • Mehwish Munawar,
  • Farhat Saira,
  • Malika Rani and
  • Arshad Mahmood
  • + 1 author

13 September 2022

Hexanary high-entropy oxides (HEOs) were synthesized through the mechanochemical sol-gel method for electrocatalytic water oxidation reaction (WOR). As-synthesized catalysts were subjected to characterization, including X-ray diffraction (XRD), Fouri...

  • Article
  • Open Access
5 Citations
6,709 Views
12 Pages

Experimental Investigations on the Influence of Adhesive Oxides on the Metal-Ceramic Bond

  • Susanne Enghardt,
  • Gert Richter,
  • Edgar Richter,
  • Bernd Reitemeier and
  • Michael H. Walter

21 January 2015

The objective of this study was to test the influence of selected base metals, which act as oxide formers, on the metal-ceramic bond of dental veneer systems. Using ion implantation techniques, ions of Al, In and Cu were introduced into near-surface...

  • Review
  • Open Access
3 Citations
2,172 Views
18 Pages

8 November 2024

The photo-induced aerobic oxidation of C–H bonds has become an increasingly valuable strategy in organic synthesis, offering a green and efficient method for introducing oxygen into organic molecules. The utilization of molecular oxygen as an o...

  • Review
  • Open Access
16 Citations
6,986 Views
49 Pages

13 January 2022

Performing synthetic transformation using visible light as energy source, in the presence of a photocatalyst as a promoter, is currently of high interest, and oxidation reactions carried out under these conditions using oxygen as the final oxidant ar...

  • Article
  • Open Access
7 Citations
2,926 Views
12 Pages

Enhancing the Oxidation Resistance of NiCrAlY Bond Coat by High-Current Pulsed Electron Beam Irradiation

  • Xianxiu Mei,
  • Xiaonan Zhang,
  • Lisong Zhang,
  • Na Li,
  • Peng Zhang,
  • Yuting Guo and
  • Nikolai N. Koval

29 July 2021

The bond coat of a NiCrAlY thermal barrier coating plays an important role in solving the thermal expansion mismatch between a metal matrix and a ceramic layer and in improving the oxidation resistance of the whole thermal barrier coating. However, t...

  • Article
  • Open Access
5 Citations
2,822 Views
9 Pages

11 September 2021

Amorphization using impurity doping is a promising approach to improve the thermoelectric properties of tin-doped indium oxide (ITO) thin films. However, an abnormal phenomenon has been observed where an excessive concentration of doped atoms increas...

  • Review
  • Open Access
5 Citations
4,271 Views
17 Pages

This article provides a discussion on the nature of bonding between noble gases (Ng) and noble metals (M) from a quantum chemical perspective by investigating compounds such as NgMY (Y=CN, O, NO3, SO4, CO3), [NgM−(bipy)]+, NgMCCH, and MCCNgH co...

  • Review
  • Open Access
124 Citations
9,682 Views
44 Pages

The Key Role of Active Sites in the Development of Selective Metal Oxide Sensor Materials

  • Artem Marikutsa,
  • Marina Rumyantseva,
  • Elizaveta A. Konstantinova and
  • Alexander Gaskov

6 April 2021

Development of sensor materials based on metal oxide semiconductors (MOS) for selective gas sensors is challenging for the tasks of air quality monitoring, early fire detection, gas leaks search, breath analysis, etc. An extensive range of sensor mat...

  • Article
  • Open Access
18 Citations
4,900 Views
15 Pages

Effects of Bonding Agents on Metal-Ceramic Bond Strength of Co-Cr Alloys Fabricated by Selective Laser Melting

  • Soo-Yoen Yoo,
  • Seong-Kyun Kim,
  • Seong-Joo Heo,
  • Jai-Young Koak and
  • Joung-Gyu Kim

28 September 2020

Bonding agents have been developed to improve bond strength between ceramic and Co-Cr metal. The aim of this study was to investigate the influence of two bonding agents on bond strength of Co-Cr metal fabricated by selective laser melting (SLM). Bon...

  • Article
  • Open Access
8 Citations
2,910 Views
18 Pages

15 September 2022

Because the laser powder bed fusion process is generally completed in a confined space and in a very short time, it is difficult to study material oxidation during this process using traditional methods. To address this knowledge gap, in this work, w...

  • Article
  • Open Access
3 Citations
2,301 Views
12 Pages

26 June 2024

Oxidation of the bond coat during turbine operation leads to additional stresses in the thermal barrier coating (TBC) system that promotes spalling of the thermal insulation. Therefore, the oxidation behavior of a TBC system plays an important role i...

  • Article
  • Open Access
35 Citations
6,536 Views
20 Pages

14 December 2018

Thermochemical energy storage is promising for the long-term storage of solar energy via chemical bonds using reversible redox reactions. The development of thermally-stable and redox-active materials is needed, as single metal oxides (mainly Co and...

  • Article
  • Open Access
23 Citations
5,430 Views
15 Pages

In this manuscript, we use the primary source of geometrical information, i.e., Cambridge Structural Database (CSD), combined with density functional theory (DFT) calculations (PBE0-D3/def2-TZVP level of theory) to demonstrate the relevance of π-h...

  • Article
  • Open Access
3 Citations
6,945 Views
13 Pages

11 April 2018

Thermocompression bonding for wafer-level hermetic packaging was demonstrated at the lowest temperature of 370 to 390 °C ever reported using Al films with thin Sn capping or insertions as bonding layer. For shrinking the chip size of MEMS (micro elec...

  • Review
  • Open Access
65 Citations
13,832 Views
28 Pages

An Overview of Active Electrode Materials for the Efficient High-Performance Supercapacitor Application

  • Bharathi Arumugam,
  • Gopiraman Mayakrishnan,
  • Suresh Kumar Subburayan Manickavasagam,
  • Seong Cheol Kim and
  • Ramkumar Vanaraj

18 July 2023

Recent energy research focuses on the efficiency enhancement of supercapacitor devices for multipurpose applications. Several materials have been used as electrode materials to achieve the maximum specific capacitance. The present review article conc...

  • Article
  • Open Access
63 Citations
18,888 Views
14 Pages

Corrosion Study and Intermetallics Formation in Gold and Copper Wire Bonding in Microelectronics Packaging

  • Chwee Sim Goh,
  • Wee Ling Eddy Chong,
  • Teck Kheng Lee and
  • Christopher Breach

17 July 2013

A comparison study on the reliability of gold (Au) and copper (Cu) wire bonding is conducted to determine their corrosion and oxidation behavior in different environmental conditions. The corrosion and oxidation behaviors of Au and Cu wire bonding ar...

  • Review
  • Open Access
15 Citations
3,678 Views
32 Pages

Recent Advances in Co3O4-Based Composites: Synthesis and Application in Combustion of Methane

  • Xinfang Wei,
  • Jiawei Kang,
  • Lin Gan,
  • Wei Wang,
  • Lin Yang,
  • Dijia Wang,
  • Ruixia Zhong and
  • Jian Qi

23 June 2023

In recent years, it has been found that adjusting the organizational structure of Co3O4 through solid solution and other methods can effectively improve its catalytic performance for the oxidation of low concentration methane. Its catalytic activity...

  • Article
  • Open Access
4 Citations
3,881 Views
11 Pages

Molecular Linking Selectivity on Self-Assembled Metal-Semiconductor Nano-Hybrid Systems

  • Thinh Luong The Nguyen,
  • Alba Gascón Nicolás,
  • Tomas Edvinsson,
  • Jie Meng,
  • Kaibo Zheng,
  • Mohamed Abdellah and
  • Jacinto Sá

15 July 2020

Plasmonics nanoparticles gained prominence in the last decade in fields of photonics, solar energy conversion and catalysis. It has been shown that anchoring the plasmonics nanoparticles on semiconductors via a molecular linker reduces band bending a...

  • Article
  • Open Access
31 Citations
5,011 Views
19 Pages

25 February 2021

Gold–palladium (Au–Pd) bimetallic nanostructures with engineered plasmon-enhanced activity sustainably drive energy-intensive chemical reactions at low temperatures with solar simulated light. A series of alloy and core–shell Au–Pd nanoparticles (NPs...

  • Article
  • Open Access
2 Citations
1,645 Views
13 Pages

16 January 2024

Tri-metallofullerenes, specifically M3@C80 where M denotes rare-earth metal elements, are molecules that possess intriguing magnetic properties. Typically, only one metal element is involved in a given tri-metallofullerene molecule. However, mixed tr...

  • Article
  • Open Access
14 Citations
2,900 Views
16 Pages

30 September 2021

Molecular dynamics of the interaction between four metal oxides (ZnO, Fe2O3, Al2O3, and CaO) present in zinc-bearing dust sludge and choline chloride (ChCl)-malonic acid (MA)(1:2) was studied in this work using Materials Studio software. The interact...

  • Review
  • Open Access
8 Citations
3,397 Views
17 Pages

Synthesis and Application of Liquid Metal Based-2D Nanomaterials: A Perspective View for Sustainable Energy

  • Gengcheng Liao,
  • Long Ren,
  • Zixuan Guo,
  • Hui Qiao,
  • Zongyu Huang,
  • Ziyu Wang and
  • Xiang Qi

5 January 2023

With the continuous exploration of low-dimensional nanomaterials, two dimensional metal oxides (2DMOs) has been received great interest. However, their further development is limited by the high cost in the preparation process and the unstable states...

  • Article
  • Open Access
19 Citations
3,946 Views
18 Pages

The Early Steps of Molecule-to-Material Conversion in Chemical Vapor Deposition (CVD): A Case Study

  • Davide Barreca,
  • Ettore Fois,
  • Alberto Gasparotto,
  • Chiara Maccato,
  • Mario Oriani and
  • Gloria Tabacchi

Transition metal complexes with β-diketonate and diamine ligands are valuable precursors for chemical vapor deposition (CVD) of metal oxide nanomaterials, but the metal-ligand bond dissociation mechanism on the growth surface is not yet clarified in...

  • Article
  • Open Access
1 Citations
1,921 Views
11 Pages

Effect of Copper Surface Roughness on the High-Temperature Structural Stability of Single-Layer-Graphene

  • Songsong Yao,
  • Boan Zhong,
  • Chongxiao Guo,
  • Jiamiao Ni,
  • Kunming Yang,
  • Siqi Hu,
  • Zheng Gong,
  • Yue Liu,
  • Jian Song and
  • Tongxiang Fan

3 April 2024

Graphene (Gr) has shown great potential in the field of oxidation protection for metals. However, numerous studies have shown that Gr will suffer structural degradation on metal surface during high-temperature oxidation, which significantly limited t...

  • Article
  • Open Access
17 Citations
4,234 Views
19 Pages

23 October 2018

Nanocomposite powders based on metal-coated graphene were synthesized using an in-situ co-reduction method in order to improve wettability and interfacial bonding between graphene and metal. Graphene oxide (GO) of 2~3 atomic layers was synthesized us...

  • Feature Paper
  • Article
  • Open Access
10 Citations
3,132 Views
11 Pages

Study on the Characteristics of a TBC System Containing a PVD-Al Interlayer under Isothermal Loading

  • Ibrahim Ali,
  • Paweł Sokołowski,
  • Lech Pawłowski,
  • Daniel Wett,
  • Thomas Grund and
  • Thomas Lampke

26 July 2021

In this work, the oxidation behavior of an atmospheric plasma-sprayed thermal barrier coating (TBC) system with a thin Al physical vapor deposition (PVD) film deposited over the bond coat is discussed. The TBC consisted of: (i) CoNiCrAlY bond coat sp...

  • Article
  • Open Access
292 Views
17 Pages

16 November 2025

Photoactivatable nitric oxide donors (photoNORMs) are promising agents for controlled NO release and real-time optical tracking in biomedical theranostics. Here, we report a comprehensive density functional theory (DFT) and time-dependent DFT (TDDFT)...

  • Article
  • Open Access
36 Citations
5,605 Views
16 Pages

Piezoelectric Effect and Electroactive Phase Nucleation in Self-Standing Films of Unpoled PVDF Nanocomposite Films

  • Marco Fortunato,
  • Chandrakanth Reddy Chandraiahgari,
  • Giovanni De Bellis,
  • Paolo Ballirano,
  • Francesca Sarto,
  • Alessio Tamburrano and
  • Maria Sabrina Sarto

19 September 2018

Novel polymer-based piezoelectric nanocomposites with enhanced electromechanical properties open new opportunities for the development of wearable energy harvesters and sensors. This paper investigates how the dissolution of different types of hexahy...

  • Article
  • Open Access
4 Citations
2,233 Views
16 Pages

Interface Strengthening and Toughening Mechanism of Hot Rolled Multilayer TWIP/40Si2CrMo Steels

  • Mingchao Dong,
  • Zhuoyu Li,
  • Baoxi Liu,
  • Cuixin Chen,
  • Wenxing Yu,
  • Bo Yang and
  • Fuxing Yin

27 September 2022

Layered metal composites play an increasingly important role in aerospace, automotive, and nuclear energy. Compared with a single metal or alloy, the layered metal composite exhibits an excellent strong-plastic matching effect. In this paper, multila...

  • Article
  • Open Access
2 Citations
1,869 Views
13 Pages

27 December 2023

The oxygen vacancy formation behavior and electrochemical and thermal properties of Ba0.5Sr0.5Fe1−xMnxO3−δ (BSFMnx, x = 0–0.15) cathode materials were investigated. For thermogravimetric analysis, the weight decreased from 1.9...

  • Review
  • Open Access
90 Citations
17,724 Views
21 Pages

Metal Oxides as Catalyst/Supporter for CO2 Capture and Conversion, Review

  • Nezar H. Khdary,
  • Alhanouf S. Alayyar,
  • Latifah M. Alsarhan,
  • Saeed Alshihri and
  • Mohamed Mokhtar

7 March 2022

Various carbon dioxide (CO2) capture materials and processes have been developed in recent years. The absorption-based capturing process is the most significant among other processes, which is widely recognized because of its effectiveness. CO2 can b...

  • Article
  • Open Access
20 Citations
5,841 Views
16 Pages

Zirconium-Aluminum-Oxide Dielectric Layer with High Dielectric and Relatively Low Leakage Prepared by Spin-Coating and the Application in Thin-Film Transistor

  • Zhihao Liang,
  • Shangxiong Zhou,
  • Wei Cai,
  • Xiao Fu,
  • Honglong Ning,
  • Junlong Chen,
  • Weijian Yuan,
  • Zhennan Zhu,
  • Rihui Yao and
  • Junbiao Peng

18 March 2020

In this paper, zirconium–aluminum–oxide (ZAO) dielectric layers were prepared by a solution method with intent to combine the high dielectric constant with a low leakage current density. As a result, dielectric layers with improved electrical propert...

  • Article
  • Open Access
11 Citations
3,299 Views
13 Pages

25 May 2022

Molybdenum carbide (Mo2C) is a promising and low-cost catalyst for the reverse water−gas shift (RWGS) reaction. Doping the Mo2C surface with alkali metals can improve the activity of CO2 conversion, but the effect of these metals on CO2 convers...

  • Review
  • Open Access
3 Citations
3,728 Views
14 Pages

Application of Laser Treatment in MOS-TFT Active Layer Prepared by Solution Method

  • Nanhong Chen,
  • Honglong Ning,
  • Zhihao Liang,
  • Xianzhe Liu,
  • Xiaofeng Wang,
  • Rihui Yao,
  • Jinyao Zhong,
  • Xiao Fu,
  • Tian Qiu and
  • Junbiao Peng

30 November 2021

The active layer of metal oxide semiconductor thin film transistor (MOS-TFT) prepared by solution method, with the advantages of being a low cost and simple preparation process, usually needs heat treatment to improve its performance. Laser treatment...

  • Article
  • Open Access
4 Citations
1,722 Views
14 Pages

23 November 2023

Environmental pollution has been widely considered by researchers, especially the heavy metals damage to the human and ecological environment is irreversible. Adsorption is an important method to remove heavy metal ions from the environment. In this...

  • Article
  • Open Access
10 Citations
2,586 Views
17 Pages

Synthesis, Characterization of Magnetic Composites and Testing of Their Activity in Liquid-Phase Oxidation of Phenol with Oxygen

  • Binara T. Dossumova,
  • Tatyana V. Shakiyeva,
  • Dinara Muktaly,
  • Larissa R. Sassykova,
  • Bedelzhan B. Baizhomartov and
  • Sendilvelan Subramanian

The development and improvement of methods for the synthesis of environmentally friendly catalysts based on base metals is currently an urgent and promising task of modern catalysis. Catalysts based on nanoscale magnetite and maghemite have fast adso...

  • Feature Paper
  • Article
  • Open Access
901 Views
17 Pages

Structure of Cu, Ni, and CuNi Bimetallic Small Clusters Incorporated in g-C3N4: A DFT Study

  • Agnieszka Drzewiecka-Matuszek,
  • Priti Sharma and
  • Dorota Rutkowska-Zbik

6 September 2025

Graphitic carbon nitride is recognized as a very promising support structure to anchor single atoms and small, sub-nanometric metal clusters, with vast applications in catalysis. In the current manuscript, we aim to study the geometry and electronic...

  • Article
  • Open Access
82 Citations
10,386 Views
16 Pages

25 November 2021

Metal oxide titanium dioxide (TiO2) nanoparticles were synthesized by using a simple and economical sol-gel method. The prepared nanoparticles were used to evaluate methylene blue dye degradation and as catalysts in the oxidation of benzaldehyde. The...

  • Article
  • Open Access
1,144 Views
30 Pages

Polymer-bonded Nd–Fe–B and Sm–Fe–N magnets have excellent magnetic properties, but their corrosion resistance is inferior. Polymer-bonded magnets, the binary alloys Nd–Fe and Sm–Fe, and the metals Fe, Nd, and Sm we...

  • Article
  • Open Access
1,901 Views
13 Pages

30 September 2024

The femtosecond laser direct writing of metals has gained significant attention for micro/nanostructuring. Copper (I) oxide nanospheres (NSs), a promising material for multi-photon metallization, can be reduced to copper (Cu) and sintered through nea...

  • Article
  • Open Access
32 Citations
7,744 Views
14 Pages

12 October 2015

Ab initio density functional theory was used to investigate the adsorption of oxygen molecule on the nickel-rich pentlandite (110) surface, which is important for mineral extraction. The three most reactive adsorption sites: Fe-top, Ni-top, and fcc-h...

  • Article
  • Open Access
19 Citations
4,427 Views
15 Pages

The Effects of Metal Complexes of Nano-Graphene Oxide to Thermal Decomposition of FOX-7

  • Chongmin Zhang,
  • Xiaolong Fu,
  • Xuexue Zhang,
  • Jizhen Li,
  • Xuezhong Fan and
  • Guofang Zhang

13 January 2020

1,1-diamino-2,2-dinitroethene (FOX-7) an insensitive high-energetic compound, has rarely been reported previously with respect to combustion performance. In order to quickly apply it to propellants, the thermal decomposition behaviors of FOX-7 should...

  • Review
  • Open Access
36 Citations
6,436 Views
34 Pages

Synthesis of Graphene-Based Nanocomposites for Environmental Remediation Applications: A Review

  • Rohit Goyat,
  • Yajvinder Saharan,
  • Joginder Singh,
  • Ahmad Umar and
  • Sheikh Akbar

29 September 2022

The term graphene was coined using the prefix “graph” taken from graphite and the suffix “-ene” for the C=C bond, by Boehm et al. in 1986. The synthesis of graphene can be done using various methods. The synthesized graphene w...

  • Article
  • Open Access
8 Citations
2,736 Views
13 Pages

Square Planar Pt(II) Ion as Electron Donor in Pnictogen Bonding Interactions

  • Sergi Burguera,
  • Rosa M. Gomila,
  • Antonio Bauzá and
  • Antonio Frontera

15 February 2023

It has been proposed that late transition metals with low coordination numbers (square planar or linear) can act as nucleophiles and participate in σ-hole interactions as electron donors. This is due to the existence, in this type of metal comp...

  • Article
  • Open Access
21 Citations
6,044 Views
14 Pages

New Insights into H2S Adsorption on Graphene and Graphene-Like Structures: A Comparative DFT Study

  • Azam Salmankhani,
  • Zohre Karami,
  • Amin Hamed Mashhadzadeh,
  • Mohammad Reza Ganjali,
  • Vahid Vatanpour,
  • Amin Esmaeili,
  • Sajjad Habibzadeh,
  • Mohammad Reza Saeb,
  • Vanessa Fierro and
  • Alain Celzard

9 November 2020

The efficient removal of pollutants from different environments has been one of the great challenges for scientists in recent years. However, the understanding of the mechanisms underlying this phenomenon is still the subject of passionate debates, m...

  • Article
  • Open Access
1 Citations
1,962 Views
18 Pages

Ni Porous Preforms Compacted with Al2O3 Particles and Al Binding Agent

  • Andrej Opálek,
  • Peter Švec,
  • Matúš Žemlička,
  • Matej Štěpánek,
  • Pavol Štefánik,
  • Stanislav Kúdela,
  • Naďa Beronská and
  • Karol Iždinský

20 January 2023

This work presents an energy-efficient, cheap, and rapid production method of a metal–ceramic preform with open porosity suitable for liquid metal infiltration and filtration applications. It is based on cold isostatic pressing of a mixture of...

  • Feature Paper
  • Article
  • Open Access
6 Citations
6,937 Views
31 Pages

18 July 2022

In this work, we investigated the catalytic effects of a Sharpless dimeric titanium (IV)–tartrate–diester catalyst on the epoxidation of allylalcohol with methyl–hydroperoxide considering four different orientations of the reacting...

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