Review on surface-characterization applications of X-ray photoelectron spectroscopy (XPS): Recent developments and challenges

Krishna, D. Nanda Gopala; Philip, John

doi:10.1016/j.apsadv.2022.100332

Cited by 239 publications

(85 citation statements)

References 181 publications

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“…Cyclic voltammograms (CV) were obtained at a scan rate of 0.1 mV s −1 using Arbin Tester. Electrochemical impedance spectroscopy (EIS) was conducted using a Solartron 1260 connected to a 1296 dielectric interface, covering a frequency range of 15 MHz to 1 Hz at room temperature [ [40][41][42][43][44]. Nyquist plots were analyzed by fitting with equivalent circuits using Z View-Plot software.…”

Section: Electrochemical Measurementsmentioning

confidence: 99%

Microwave assisted synthesis for ϵ-MnO₂ nanostructures on Ni foam as for rechargeable Li–O₂ battery applications

Rao,

Ramasubramanian,

Saritha

et al. 2023

Nano Ex.

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Lithium-air batteries exhibits high practical energy densities ranging from 1000 to 4000 Wh Kg-1, rendering them appealing for applications in portable electronic devices and electric vehicles. Nevertheless, they grapple with challenges like low charge-discharge efficiency, limited stability over multiple cycles, and electrode degradation stemming from undesirable side reactions, thus impeding their commercial market. In this study, ϵ-MnO2 petal-like nanostructures were synthesized on Ni foam via simple, microwave-assisted synthesis approach. The resulting ϵ-MnO2/Ni electrode demonstrated storage capacities (1982 mAh/g discharge capacity at 200 mA/g) alongside enhanced cyclability and stability over 100 cycles, independent of discharge depth. This electrochemical performance can be attributed to its 3D morphology, oxygen defects, and the absence of side reactions from carbon-based additives. Overall, ϵ-MnO2/Ni electrode catalysts hold potential for realizing cost-effective Li-O2 based energy storage technologies.

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Section: Electrochemical Measurementsmentioning

confidence: 99%

Microwave assisted synthesis for ϵ-MnO₂ nanostructures on Ni foam as for rechargeable Li–O₂ battery applications

Rao,

Ramasubramanian,

Saritha

et al. 2023

Nano Ex.

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“…The peak of C at 284.8 eV was applied as the standard peak for calibration, which is the most popular XPS calibration approach. [ 39–41 ] Based on the above results, it can be concluded that superhydrophobic film is composed of Ni/Al 2 O 3 /STA composite film.…”

Section: Resultsmentioning

confidence: 88%

Facile Fabrication of High‐White and Robust Superhydrophobic Ni/Al₂O₃ Composite Coating on Al Alloy

Zhou

Jia

et al. 2023

Adv Eng Mater

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This work presented a facile method to fabricate high‐white and robust superhydrophobic film on Al alloy surface. Ni/Al2O3 film with appropriate roughness and high‐white surface were constructed on the Al alloy by a simple chemical bath method via placing the Al alloy into the Ni2+ aqueous solution. Then the surface energy was reduced by spin‐coating the stearic acid (STA) to achieve excellent superhydrophobicity. As expected, the reflectivity, self‐cleaning, corrosion resistivity and mechanical durability of Al alloy after modification have all displayed dramatic enhancements. The reflectance of the modified Al alloy is far above the pristine Al alloy at all wavelengths (200‐2000 nm). This high‐white film with remarkable reflectivity can effectively reduce its surface temperature and improve visibility in practical application. Finally, a champion water contact angle of 161° and corrosion resistivity of 97.6% were attained by coating Ni/Al2O3‐STA composite film on Al alloy. The Leeb hardness of superhydrophobic film coated Al alloy was enhanced from 325 to 461 after coating superhydrophobic film on Al alloy. This work provides a framework for the development of superhydrophobic Al alloy with high‐whiteness and robustness.This article is protected by copyright. All rights reserved.

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“…The van der Waals surface ESP plays a crucial role in predicting intermolecular interactions. , In general, the ESP of C and H atoms in coal molecules is red, indicating a positive charge and their susceptibility to nucleophilic reactions. The ESP of the O atomic region is blue, indicating a negative charge and its propensity for electrophilic reactions.…”

Section: Results and Discussionmentioning

confidence: 99%

Reaction Mechanism of Nitrogen-Containing Heterocyclic Compounds Affecting Coal Spontaneous Combustion

Zhang,

Xi,

Gong

et al. 2023

ACS Omega

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To uncover the reaction mechanism of nitrogencontaining heterocyclic compounds affecting coal self-heating, quantum chemical calculations and X-ray photoelectron spectroscopy (XPS) experiments were applied to elucidate the reaction pathways and thermodynamic characteristics of pyrrole, pyridine, indole, quinoline, and carbazole. Results show that in pyrrole, pyridine, indole, quinoline, and carbazole, the reaction with O 2 captures the H atom and leads to the formation of •OOH and pyrrolyl, pyridinyl, indolyl, quinolinyl, and carbazolyl radicals, respectively. The activation energies are 118.15, 86.642, 34.132, 21.004, and 47.259 kJ/mol, respectively. ROO• formed by spontaneous adsorption of O 2 by nitrogen-containing radicals undergoes self-reaction, and the O−O bond is broken and dehydrogenated to generate •OH. Subsequently, at room temperature, •OH reacts with pyrrole, pyridine, indole, quinoline, and carbazole, resulting in the formation of H 2 O and pyrrolyl, pyridinyl, indolyl, quinolinyl, and carbazolyl radicals, respectively, thereby forming a cyclic chain reaction. The XPS analysis yielded the following findings: (i) when the temperature rises to 70 °C, the N-5 and N-6 content decrease, which is attributed to the activation energy; (ii) when the temperature reaches 200 °C, the N-5 content decreases, which can be attributed to the activation energy required for the oxidation of pyrrole (118.5 kJ/mol).

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Review on surface-characterization applications of X-ray photoelectron spectroscopy (XPS): Recent developments and challenges

Cited by 239 publications

References 181 publications

Microwave assisted synthesis for ϵ-MnO₂ nanostructures on Ni foam as for rechargeable Li–O₂ battery applications

Microwave assisted synthesis for ϵ-MnO₂ nanostructures on Ni foam as for rechargeable Li–O₂ battery applications

Facile Fabrication of High‐White and Robust Superhydrophobic Ni/Al₂O₃ Composite Coating on Al Alloy

Reaction Mechanism of Nitrogen-Containing Heterocyclic Compounds Affecting Coal Spontaneous Combustion

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Review on surface-characterization applications of X-ray photoelectron spectroscopy (XPS): Recent developments and challenges

Cited by 239 publications

References 181 publications

Microwave assisted synthesis for ϵ-MnO2 nanostructures on Ni foam as for rechargeable Li–O2 battery applications

Microwave assisted synthesis for ϵ-MnO2 nanostructures on Ni foam as for rechargeable Li–O2 battery applications

Facile Fabrication of High‐White and Robust Superhydrophobic Ni/Al2O3 Composite Coating on Al Alloy

Reaction Mechanism of Nitrogen-Containing Heterocyclic Compounds Affecting Coal Spontaneous Combustion

Contact Info

Product

Resources

About

Microwave assisted synthesis for ϵ-MnO₂ nanostructures on Ni foam as for rechargeable Li–O₂ battery applications

Microwave assisted synthesis for ϵ-MnO₂ nanostructures on Ni foam as for rechargeable Li–O₂ battery applications

Facile Fabrication of High‐White and Robust Superhydrophobic Ni/Al₂O₃ Composite Coating on Al Alloy