Electrochemical synthesis of ZnO/In2S3 core–shell nanowires for enhanced photoelectrochemical properties

Braiek, Z.; Brayek, A.; Ghoul, Mohamed; Taieb, S. Ben; Gannouni, M.; Assaker, I. Ben; Souissi, A.; Chtourou, R.

doi:10.1016/j.jallcom.2015.08.204

Cited by 35 publications

(29 citation statements)

References 40 publications

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“…The electrical and optical properties of ZnO nanostructures can be easily changed to controlled with controlled size, morphology and doping level. ZnO nanomaterial metal doping includes Mg (Shewale and Yu 2016), In (Nam, Kim, and Leem 2015;Tang et al 2015), Ce Li et al 2015a, Pd (Öztürk et al 2016), Eu (Chandrasekhar et al 2015;Khataee et al 2015), Co (Habibi and Shojaee 2015), Er (Bu 2015), Al (Bu 2015;Yoo et al 2015), Ni (Kaneva, Dimitrov, and Dushkin 2011), Cu (Li et al 2015a; Wang and Su 2016), Fe (Amiri et al 2016), Ag (Ansari et al 2014;Braiek et al 2015;Hsu et al 2014;Kumari et al 2015;Mosquera et al 2015;Patil et al 2016;Sahu et al 2012) and nonmetal doping includes F (Li et al 2015a), C (Ge et al 2015;Li et al 2015b), N (Bu 2015), and Cl (Chikoidze et al 2008). To produce p-type conductivity and enhance luminescence yield of ZnO doped with silver where its acts as an electron acceptor in the material (Bechambi et al 2015;Kang et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Electrochemical production of ZnO and ZnO@Ag core-shell nanorods on ITO substrate and their photocatalytic and photoelectrochemical performance

Haspulat-Taymaz¹,

Kamış²,

Duyar-Karakuş³

2019

Bilge International Journal of Science and Technology Research

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Zinc oxide (ZnO) and Ag deposited ZnO (ZnO@Ag) core-shell nanorods produced electrochemically on indium tin oxide coated glass (ITO) substrate for the first time without any organic surfactants or high annealing temperature. Nanorod films were synthesized two-step synthesis procedure. Firstly, ZnO nanorods electrodeposited at low temperature, in second step, in situ electrochemically etching of deposited ZnO nanorod was carried out. Characterizations of electrochemically produced films have been carried by using morphologic, spectroscopic and structural analysis methods by using X-ray diffraction (XRD), scanning electron microscope (SEM), atomic force microscope (AFM), fourier transform infrared spectroscopy (FTIR), Elemental mapping, UV-visible diffuse absorption spectra and photoluminesance spectroscopy (PL). The photocatalytic performance of the obtained films was determined by degradation of methylene blue and malachite green dyes under UV light illumination. Methylene blue and malachite green dyes completely degraded under UV light irradiation after 150 and 180 min, respectively. Also, photoelectrochemical (PEC; water splitting) performances of the produced films were investigated under dark conditions and UV light irradiation. The ZnO@Ag core-shell nanorods exhibited higher photocatalytic and photoelectrochemical performance in comparison with unmodified ZnO nanorods film. The nanorods grown on the ITO substrates showed very good photocatalytic activity and became reusable without significant loss of activity.

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Section: Introductionmentioning

confidence: 99%

Electrochemical production of ZnO and ZnO@Ag core-shell nanorods on ITO substrate and their photocatalytic and photoelectrochemical performance

Haspulat-Taymaz¹,

Kamış²,

Duyar-Karakuş³

2019

Bilge International Journal of Science and Technology Research

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“…51,52 A photochemical study has revealed a carrier mobility value for In 2 S 3 that is in the same range as compounds frequently used in photoelectrodes, such as the metal oxides semiconductors Cu 2 O, WO 3 and BiVO 4 . 53,54 In 2 S 3 has been tested as photoanode in aqueous media, but only rarely without a sacrificial agent [55][56][57] , so that O 2 photogeneration may be feasible. However such works disregarded the photocorrosion or the generation of byproducts like H 2 O 2 , which have been evidenced 58,59 .…”

Section: Introductionmentioning

confidence: 99%

Laccase-Catalyzed Bioelectrochemical Oxidation of Water Assisted with Visible Light

et al. 2017

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Here we present the modification of fluorinated tin oxide electrodes with In 2 S 3 , a n-type semiconductor chalcogenide that absorbs visible light (λ ≤ 600nm), and its further use as an active scaffold for laccase-catalyzed oxidation of water. Illumination of FTO-In 2 S 3-laccase electrode yields O 2 production at much lower applied potential than the previous example using the same laccase, where only electric energy was applied. The present system allows a diversification of the energy applied to accomplish the water splitting, taking a portion of it from the Sun. This work is the first example where an enzyme other than PSII has been used combined with visible light to biocatalyze the O 2 evolution.

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“…QDs represents a more efficient solution with respect of dye sensitizers because of better stability and chemical compatibility with ZnO, tunable properties and dimensions by ease control of synthesis parameter and higher optical absorption. A great variety of semiconducting QDs like CdS, CdSe, CdTe, PbS, PbSe, CuInS 2 , Bi 2 S 3 , In 2 S 3 , and carbon QDs has been implemented in ZnO based photovoltaic cell to work in visible range and cover a larger adsorption spectrum. Functionalization of ZnO nanostructures with QDs can be classified in two groups depending on the particles growth approach.…”

Section: Surface‐engineering Of Zno Nanostructures With Nanoparticlesmentioning

confidence: 99%

Surface Engineering of Nanostructured ZnO Surfaces

Laurenti

Stassi

Canavese

et al. 2016

Adv Materials Inter

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are oriented in one direction and their assembly and stacking produces the wurtzite hexagonal symmetry. The noncentrosymmetric and anisotropic crystalline structure of wurtzite-like ZnO generates very interesting properties such as piezo-and pyro-electricity: the application of an external stimulus, like mechanical stress or temperature, deforms the tetrahedron structure. This deformation results in a separation between the positive and negative centers of charge, inducing the formation of a dipole moment. [7,8] The polar surface and anisotropic structure of ZnO can be usefully exploited to form different kinds of micro and nanostructures from 0D to 3D, [5] including, but not limited to nanowires, [9][10][11][12] nanotubes, [13,14] nanobelts, [15][16][17][18][19] nanorings, [20] flower-like morphologies, [21][22][23][24][25] multipods, [26,27] tetrapods, [28][29][30] sponge-like structures [31][32][33][34] and so on [29,[35][36][37][38][39] (Figure 1). Therefore, several research efforts have been invested in studying various preparation procedures for ZnO micro and nano-materials. Wet chemical approaches, like sol-gel, hydrothermal growths, electrodeposition and template-assisted routes, [40,41] as well as vapor-phase methods, for example chemical vapour deposition (CVD), physical vapour deposition (PVD) including sputtering and evaporation approaches, [42][43][44] and epitaxial growth methods [45] are among the most used ones. The great advantages of the wet chemical approaches are the high synthesis versatility, low temperature employed and low costs. [9] From the other side, dry methods take advantage of the high quality and excellent control over the level of crystallinity of the synthesized ZnO structures, as well as the absence of contamination and high purity of the final material. [46] The combination of different properties with the ease and high versatile synthesis of ZnO material in different micro and nanostructures offers a huge possibility of potential applications.For example, ZnO is already used as an efficient catalyst in the selective oxidation of involving oxygenates (i.e., alcohols, aldehydes, and carboxylic acids) and in methanol synthesis catalysts. It is also largely applied as protective, anti-corrosion layer in galvanized steel products, [49][50][51] as well as in paints and sunscreens as an UV absorber. Its biocompatibility makes this material suitable, in the form of microparticles, for paste formulations in cosmetic applications.The combination of the piezoelectric with the semiconducting properties of ZnO is found to result into new exciting physical properties, [52][53][54] and it has recently opened the research field to energy harvesting application. ZnO nanomaterials can be thus used as nanogenerators, able to convert the mechanical deformation from the surrounding environment into electrical Zinc Oxide (ZnO) nanostructures represent promising substrate materials for numerous applications, ranging from new generation solar cells, to bio-and chemical sensors. This interest is due ...

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Electrochemical synthesis of ZnO/In2S3 core–shell nanowires for enhanced photoelectrochemical properties

Cited by 35 publications

References 40 publications

Electrochemical production of ZnO and ZnO@Ag core-shell nanorods on ITO substrate and their photocatalytic and photoelectrochemical performance

Electrochemical production of ZnO and ZnO@Ag core-shell nanorods on ITO substrate and their photocatalytic and photoelectrochemical performance

Laccase-Catalyzed Bioelectrochemical Oxidation of Water Assisted with Visible Light

Surface Engineering of Nanostructured ZnO Surfaces

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