Growth of novel ZnO nanostructures by soft chemical routes

Kumar, Rajesh; Ramakrishnan, S.; Matheswaran, P.; Sudhagar, P.; Kang, Yong Soo

doi:10.1016/j.jallcom.2010.06.206

Cited by 23 publications

(7 citation statements)

References 26 publications

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“…Furthermore, materials are allowed to directly grow on conductive substrates, which is conducive to charge transfer and favorable for PEC devices. Besides a few binary metal oxides (ZnO, Fe 2 O 3 , TiO 2 ), [24][25][26] the SILAR method is mainly used to synthesize metal sulfide and selenide (ZnS, CdS, PbS, SnS, CdSe, PbSe) thin films. [27][28][29][30][31][32][33][34][35][36][37] Most recently, the SILAR method has been used to prepare ternary metal oxides.…”

mentioning

confidence: 99%

A Simplified Successive Ionic Layer Adsorption and Reaction (s-SILAR) Method for Growth of Porous BiVO₄Thin Films for Photoelectrochemical Water Oxidation

Guo

Tang

Mabayoje

et al. 2017

J. Electrochem. Soc.

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Since monoclinic bismuth vanadate (BiVO4) has been considered to be a promising anode material for photoelectrochemical (PEC) water splitting, the synthesis of high-quality BiVO4 photoanodes for use in PEC cells is beneficial. Here, we report a facile simplified successive ionic layer adsorption and reaction (s-SILAR) method to synthesize porous BiVO4 films. Evaluation of the porous BiVO4 film as a photoanode yielded photocurrents of ∼0.70 and ∼1.20 mA cm−2 at 1.23 V vs RHE under AM1.5G irradiation for water and sulfite oxidation, respectively. After coupling with a cobalt–phosphate (Co-Pi) catalyst, its photocurrent for water oxidation increased to ∼0.97 mA cm−2 at 1.23 V vs RHE. The high performance of the resultant BiVO4 films and simplicity of operation make this s-SILAR technique a promising strategy to prepare BiVO4 photoanodes.

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mentioning

confidence: 99%

A Simplified Successive Ionic Layer Adsorption and Reaction (s-SILAR) Method for Growth of Porous BiVO₄Thin Films for Photoelectrochemical Water Oxidation

Guo

Tang

Mabayoje

et al. 2017

J. Electrochem. Soc.

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“…Excess ammonia is added to dissolve the Zn(OH) 2 precipitate. This can be represented by the following possible reaction equations [49]:…”

Section: B Possible Growth Mechanism Of Zno Thin Filmsmentioning

confidence: 99%

Solution-Processable Growth and Characterization of Dandelion-like ZnO:B Microflower Structures

et al. 2021

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Intrinsic and dandelion-like microflower nano-rod structures of boron-doped ZnO thin films were synthesized with an ecofriendly and cost-effective chemical bath deposition technique from an aqueous solution of zinc nitrate hexahdyrate [Zn(NO3)2.6H2O] as a precursor solution and boric acid as a doping solution. The boron concentrations were 0.1, 0.3, 0.5, 1.0, 3.0, 5.0, and 7.0 by volume. Scanning electron micrographs showed that doping with boron appears to hinder the vertical alignment of crystallites. Additionally, independent hexagonal nano-rod structures were observed to coalesce together to form dandelion-like structures on the film’s surface. The atomic ratio of the elements was determined via the X-ray photoemission spectrum technique. There were no substantial changes in the vibration structure of the film upon doping in terms of the Raman spectra. The optical band gap of ZnO (3.28 eV) decreased with B doping. The band gap of the ZnO:B film varied between 3.18 and 3.22 eV. The activation energy of the ZnO was calculated as 0.051 eV, whereas that of the ZnO:B film containing 1.0% B was calculated as 0.013 eV at low temperatures (273–348 K), versus 0.072 eV and 0.183 eV at high temperatures (348–523 K), respectively. Consequently, it can be interpreted that the 1% B-doped ZnO, which has the lowest activation energy at both low and high temperatures, may find some application areas such as in sensors for gases and in solar cells.

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“…At room temperature, the bulk ZnO has a direct bandgap of 3.37 eV [1,2]. ZnO can support strong photoactivity, excellent stability of electrochemical properties, and superior electron mobility [3][4][5]. As a promising functional material, ZnO nanostructures are extensively being investigated for wide applications because they are inexpensive, simple and easy to synthesize in film form with controllable morphology and size of nanostructures [6].…”

Section: Introductionmentioning

confidence: 99%

Palladium Role in Growth of ZnO Nanostructure with Plasmonics Layering by Seed Mediated Hydrothermal Method

Albaihaqi

Abdi

Natalia

et al. 2020

KEM

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The electrical and optical properties of nanomaterials depend on their structural form. As an effort to develop an advanced nanomaterial, zinc oxide (ZnO) is interesting to synthesis for many applications such as active material for solar cells and biosensors. This paper provides the role of palladium and plasmonic materials in growing ZnO nanostructure, with a focus on its structural analysis. Nanomaterial ZnO was grown by seed-mediated hydrothermal method with layering by plasmonic materials, i.e. gold (Au) and platinum (Ag). X-ray diffraction analysis shows the presence of three dominant peak angles, i.e 34.43o, 36.32o, and 47.49o corresponding to crystal orientation of (002), (101) and (102), respectively. Palladium (Pd) treatment plus layering by plasmonic materials give a higher size of the nanostructure, but their electric band gaps are decreasing slightly. These findings also supported by high absorbance in UV-vis spectra. Gold layering on the nanomaterial gives a more significant role than platinum which indicated by higher size in diameter and higher absorption of UV-Vis spectra. The average size of pristine ZnO, ZnO:Pd, ZnO:Pd:Ag, and ZnO:Pd:Ag are 44.13, 45.99, 45.28, and 44.81 nm, respectively.

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Growth of novel ZnO nanostructures by soft chemical routes

Cited by 23 publications

References 26 publications

A Simplified Successive Ionic Layer Adsorption and Reaction (s-SILAR) Method for Growth of Porous BiVO₄Thin Films for Photoelectrochemical Water Oxidation

A Simplified Successive Ionic Layer Adsorption and Reaction (s-SILAR) Method for Growth of Porous BiVO₄Thin Films for Photoelectrochemical Water Oxidation

Solution-Processable Growth and Characterization of Dandelion-like ZnO:B Microflower Structures

Palladium Role in Growth of ZnO Nanostructure with Plasmonics Layering by Seed Mediated Hydrothermal Method

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Growth of novel ZnO nanostructures by soft chemical routes

Cited by 23 publications

References 26 publications

A Simplified Successive Ionic Layer Adsorption and Reaction (s-SILAR) Method for Growth of Porous BiVO4Thin Films for Photoelectrochemical Water Oxidation

A Simplified Successive Ionic Layer Adsorption and Reaction (s-SILAR) Method for Growth of Porous BiVO4Thin Films for Photoelectrochemical Water Oxidation

Solution-Processable Growth and Characterization of Dandelion-like ZnO:B Microflower Structures

Palladium Role in Growth of ZnO Nanostructure with Plasmonics Layering by Seed Mediated Hydrothermal Method

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A Simplified Successive Ionic Layer Adsorption and Reaction (s-SILAR) Method for Growth of Porous BiVO₄Thin Films for Photoelectrochemical Water Oxidation

A Simplified Successive Ionic Layer Adsorption and Reaction (s-SILAR) Method for Growth of Porous BiVO₄Thin Films for Photoelectrochemical Water Oxidation