Hydrothermal growth of ZnO nanostructures in supercritical domain: Effect of the metal salt concentration (Zn(NO3)2) in alkali medium (KOH)

Demoisson, Frédéric; Piolet, Romain; Bernard, Frédéric

doi:10.1016/j.supflu.2014.12.012

Cited by 10 publications

(3 citation statements)

References 37 publications

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“…Then, these species react together (dehydration reaction) until forming a soluble cluster Zn x O y (OH) z (z+y-2x)-. Finally, the ZnO crystals precipitate when the cluster reaches its critical size [37,38]. Moreover, since the (001) faces have higher symmetry than the other faces, growing along the c-axis is the typical crystal habit and growth form of non-hybridized ZnO wurtzite under hydrothermal condition [39].…”

Section: Morphology Analysis Of the Samplesmentioning

confidence: 99%

Hydrothermal growth of ZnO nanoparticles on the surface of two kinds of Ti ₃ C ₂ co‐catalysts with different interlayer spacing towards enhanced photocatalytic activity

Luo

Chen

et al. 2022

Micro & Nano Letters

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One of the methods for improving photocatalytic efficiency is using suitable co‐catalysts which can promote the separation of photogenerated electrons and holes. In this study, a typical MXene material, layered Ti3C2, was selected as a co‐catalyst and acquired by selectively etching Al element from Ti3AlC2 using hydrogen fluoride (HF), and then the interlayer spacing of Ti3C2 was reduced through ultrasonic oscillation treatment. By subsequent hydrothermal reactions, the ZnO nanoparticles successfully grew on the surface of two kinds of layered Ti3C2 without and with ultrasonic oscillation treatment (Ti3C2 and Ti3C2‐U), thus yielding two ZnO/Ti3C2 composite photocatalysts (ZTX and ZTUX samples), respectively. Compared with the pure ZnO, ZTX and ZTUX samples have significantly improved photocatalytic activity, which arises from the efficient separation of photogenerated electrons and holes depending on the appropriate Fermi level position of Ti3C2. Besides, the ZTUX photocatalysts on the whole exhibit higher photocatalytic activity compared with the ZTX photocatalysts, depending on narrower layer spacing of Ti3C2‐U which facilitates transport of photogenerated electrons.

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Section: Morphology Analysis Of the Samplesmentioning

confidence: 99%

Hydrothermal growth of ZnO nanoparticles on the surface of two kinds of Ti ₃ C ₂ co‐catalysts with different interlayer spacing towards enhanced photocatalytic activity

Luo

Chen

et al. 2022

Micro & Nano Letters

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“…Within the synthesis methods, relatively complex methods are found such as the chemical vapor deposition (CVD) [30], Vapor Phase Transport (VPT) [31] for its acronym in English. These techniques are relatively expensive and complex, compared to others such as chemical precipitation [28,32], sol-gel [23,[33][34][35], hydrothermal [29,[36][37][38][39][40][41], or solvothermal [19,42,43].…”

Section: Zinc Oxidementioning

confidence: 99%

Anodic ZnO-Graphene Composite Materials in Lithium Batteries

Herrera-Pérez¹,

Pérez-Zúñiga²,

Verde-Gómez³

et al. 2019

Zinc Oxide Based Nano Materials and Devices

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An important area to cope with in the implementation of technologies for the generation of energy from renewable sources is storage, so it is a priority to develop new ways of storing energy with high efficiency and storage capacity. Experimental reports focused on ZnO-graphene composite materials applied to the anode design which indicated that they show low efficiencies of around 50 %, but values very close to the theoretical capacity have already been reported in recent years. The low efficiency of the materials for the anode design of the Li-ion battery is mainly attributed to the pulverization and fragmentation of the material or materials, caused by the volumetric changes and stability problems during the charge/discharge cycles. In this chapter, we will discuss the development of composite materials such as ZnOgraphene in its application for the design of the anode in the Li-ion battery.

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“…ZnO is a metal oxide that is widely used in many kinds of technological applications such as piezoelectrics, transducers, chemical sensors, catalysts, photovoltaics, lithium batteries, and others. [1][2][3][4] It can be synthesized into nanostructures including nanobars, [5] nanosheets, [6,7] 3D nanostructures, [8,9] and nanocrystals, [10,11] utilizing low-cost methods such as chemical precipitation, [12] sol-gel, [13][14][15] hydrothermal, [16][17][18][19] and solvothermal. [20] Recently, there has been a new 2D ZnO monolayer structure that is attracting a lot of attention.…”

Section: Introductionmentioning

confidence: 99%

First‐Principles Study of Carbon‐Substituted ZnO Monolayer for Adjusting Lithium Adsorption in Battery Application

Jonuarti,

Zulaehah,

Suwardy

et al. 2024

ChemNanoMat

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Structural stability, local density of states, bonding information, and charge distribution differences of C‐substituted ZnO (C/VZnxOy) monolayer structures, as well as their interactions with lithium atoms, are investigated using the density functional theory (DFT) method. The energy required to generate vacancies in pristine ZnO monolayers is considerably high, but since the C atoms are strongly adsorbed in thevacant sites, the energy required to form C/VZnxOy structures is reduced. These lattice substitutions cause an alteration of the Zn d‐states. The bonding analysis shows that the C — O interaction is stronger than the C — Zn interaction. So, it generates high stability for these structures. Furthermore, because the development of C/VZnxOy is aimed at lithium battery electrode applications, the most fundamental thing that needs to be examined initially is the interaction between the C/VZnxOy surfaces and the lithium atoms. Li3 strongly binds on all C/VZnxOy surfaces, and it turns to Li3+ based on a simple analysis of charge distribution differences. These findings will have a substantial impact on the future development of ZnO monolayers, and their potential as lithium battery electrodes can be studied further.

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Hydrothermal growth of ZnO nanostructures in supercritical domain: Effect of the metal salt concentration (Zn(NO3)2) in alkali medium (KOH)

Cited by 10 publications

References 37 publications

Hydrothermal growth of ZnO nanoparticles on the surface of two kinds of Ti ₃ C ₂ co‐catalysts with different interlayer spacing towards enhanced photocatalytic activity

Hydrothermal growth of ZnO nanoparticles on the surface of two kinds of Ti ₃ C ₂ co‐catalysts with different interlayer spacing towards enhanced photocatalytic activity

Anodic ZnO-Graphene Composite Materials in Lithium Batteries

First‐Principles Study of Carbon‐Substituted ZnO Monolayer for Adjusting Lithium Adsorption in Battery Application

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Hydrothermal growth of ZnO nanostructures in supercritical domain: Effect of the metal salt concentration (Zn(NO3)2) in alkali medium (KOH)

Cited by 10 publications

References 37 publications

Hydrothermal growth of ZnO nanoparticles on the surface of two kinds of Ti 3 C 2 co‐catalysts with different interlayer spacing towards enhanced photocatalytic activity

Hydrothermal growth of ZnO nanoparticles on the surface of two kinds of Ti 3 C 2 co‐catalysts with different interlayer spacing towards enhanced photocatalytic activity

Anodic ZnO-Graphene Composite Materials in Lithium Batteries

First‐Principles Study of Carbon‐Substituted ZnO Monolayer for Adjusting Lithium Adsorption in Battery Application

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Hydrothermal growth of ZnO nanoparticles on the surface of two kinds of Ti ₃ C ₂ co‐catalysts with different interlayer spacing towards enhanced photocatalytic activity

Hydrothermal growth of ZnO nanoparticles on the surface of two kinds of Ti ₃ C ₂ co‐catalysts with different interlayer spacing towards enhanced photocatalytic activity