Hydrothermal synthesis of photo-induced hydrophilic ZnO nanorods

Khamkhom, P.; Pokai, S.; Chananonnawathorn, Chanunthorn; Horprathum, Mati; Eiamchai, Pitak; Pattantsetakul, V.; Limwichean, Saksorn; Nuntawong, Noppadon; Limnonthakul, Puenisara; Kaewkhao, J.

doi:10.1016/j.matpr.2018.02.075

Cited by 4 publications

(3 citation statements)

References 9 publications

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“…Pada pola XRD menunjukan semua sampel diidentifikasi sebagai polikristalin yang sesuai dengan struktur ZnO heksagonal wurtzite. Hasil menunjukkan bahwa dengan meningkatnya waktu pertumbuhan, ada peningkatan yang signifikan dalam intensitas puncak difraksi sesuai dengan bidang (002) karena orientasi ZnO nanorod horizontal [9].…”

Section: Gambar 2 Ilustrasi Proses Arus Konveksiunclassified

Studi Pengaruh Aliran Konveksi Pada Perbedaan Letak Substrat Proses Sintesis Struktur Kristal Zno Nanorod

Fauziyyah¹,

Isnaeni²,

Sugihartono³

2020

Prosiding Seminar Nasional Fisika (E-Journal) snf2016 Unj

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Berdasarkan hasil review, ZnO nanorod dapat ditumbuhkan diatas substrat silicon (Si) pada suhu 90 ºC dengan Teknik Hidrotermal selama 2 jam. Pengamatan dilakukan untuk melihat pengaruh aliran konveksi pada peletakan substrat di dalam botol selama proses sintesis terhadap struktur kristal nanorod ZnO. Scanning Electron Microscopy (SEM) akan dilakukan untuk menguji morfologi sampel nanorod ZnO. Teknik difraksi sinar-x (XRD) akan dilakukan untuk menguji struktur kristal nanorod ZnO pada suhu ruang. Spektrum XRD yang diperoleh akan dikonfirmasi menggunakan standar yang mengacu pada Inorganic Crystal Structure Database (ICSD). Perhitungan Full Width at Half Maximum (FWHM), ukuran kristalit, dan strain akan dilakukan sesuai persamaan Debye-Scherer. Selanjutnya penelitian ini diharapkan dapat berupa analisis pada sampel nanorod ZnO di atas substrat Si yang disintesis dengan posisi letak berbeda.

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Section: Gambar 2 Ilustrasi Proses Arus Konveksiunclassified

Studi Pengaruh Aliran Konveksi Pada Perbedaan Letak Substrat Proses Sintesis Struktur Kristal Zno Nanorod

Fauziyyah¹,

Isnaeni²,

Sugihartono³

2020

Prosiding Seminar Nasional Fisika (E-Journal) snf2016 Unj

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“…18 These aligned nanorod arrays have been produced using a number of growth methods including chemical bath deposition (CBD), 19 vapour phase transport (VPT), 20 chemical vapour deposition (CVD), 21 carbothermal reduction vapour phase transport (CTR-VPT), 22 electrodeposition, 23 and hydrothermal deposition. 24 Among these methods, CBD has achieved prominence because of its advantages such as simplicity, controllability, potential for scalable deposition, low cost, and low temperature processing which provides the possibility of using cheap substrates such as plastics, as well as glass or silicon. 12,25,26 The formation of ZnO nanorods by CBD is explained in detail by Byrne et al…”

Section: Introductionmentioning

confidence: 99%

Photoelectrocatalytic Degradation of Methylene Blue Using ZnO Nanorods Fabricated on Silicon Substrates

Rosa

Cavalcante

Silva

et al. 2020

j nanosci nanotechnol

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ZnO nanorods were grown on silicon (Si) substrates by two techniques: (i) Chemical Bath Deposition (CBD) and (ii) a CBD seed layer combined with Carbothermal Reduction Vapor Phase Transport (CTR-VPT). The structured ZnO nanorods were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and contact angle measurments. The photoelectrochemical property of ZnO nanorods were analyzed by linear voltammetry under UV-ABC light excitation. Using the ZnO nanorod samples as photoanodes, the removal of methylene blue (MB) as a representative organic compound was studied by the photoelectrocatalytic (PEC) technique applying a potential (E) of 0.6 V. For comparison purposes, experiments were performed under the same conditions using photocatalysis (PC), direct photolysis and using samples of pure Si (support material) as working electrodes in PEC. XRD analyses of ZnO prepared by both methods showed the expected ZnO wurtzite phase and a preferred c-axial orientation in the growth of the nanorods. The presence of ZnO was further confirmed by XPS and contact angle measurements showed that ZnO grown by CBD (ZnO/CBD) had a slightly hydrophobic behavior while ZnO grown by CTR-VPT (ZnO/CTR-VPT) is hydrophilic. Both ZnO sample types were shown to be photoactive, 3 with ZnO/CBD showing higher resultant photocurrent compared to ZnO/CTR-VPT. For the degradation of MB 53% of the compound was removed using ZnO/CBD as a working electrode, while using the ZnO/CTR-VPT electrode led to a removal of 43% of MB. However, direct photolysis alone removed 39% of the MB. The lower removal of MB using ZnO/CTR-VPT samples was related to surface dissociation during the degradation process. The results show that ZnO nanorods prepared by the CBD techique are a promising photoelectrode for PEC applications. Our data also indicate that CTR-VPTgrown nanorods produce uniform nanorod arrays, but this uniform nanostructure deposit does not lead to any increase in PEC activity.

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“…Thus, ZnO films have been widely applied in the field of nanomaterial development, and possess good catalytic performance. [24][25][26][27] However, little attention has been paid to the preparation of nanosphere array PbO 2 electrodes on ZnO films. Additionally, among the preparation technologies used for ZnO films, electrodeposition methods have more advantages because of their simplicity and low cost.…”

mentioning

confidence: 99%

Preparation and Electrocatalytic Performance of Nanosphere Array PbO₂ Electrode on Stainless Steel-Based Grid-Like ZnO Film

Gui¹,

Жен²,

Song³

et al. 2019

J. Electrochem. Soc.

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A nanosphere array PbO 2 electrode was constructed on as-prepared stainless steel-based grid-like ZnO film via anodic oxidation in lead nitrate solution. The above grid-like ZnO film was prepared in zinc nitrate solution by electrodeposition using polystyrene (PS) microsphere templates. The morphology and composition were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The performance was investigated using cyclic voltammetry (CV), linear sweep voltammetry (LSV) and electrochemical impedance spectroscopy (EIS) measurements. The results showed that the active layer of the array PbO 2 electrode possesses a regular petal-like array structure that consists of many clustered PbO 2 nanospheres. The array structure can increase the electrochemical active surface area (ECSA). The total voltammetric charge (q T * ) is 2.6 times that of the traditional PbO 2 electrode. Additionally, the array electrode shows a larger exchange current density (i 0 ), lower activation energy (E a ) and charge transfer resistance (R ct ) during the process of oxygen evolution. In the degradation process of phenol, the degradation rate constant of the array PbO 2 electrode is significantly greater than that of a traditional PbO 2 electrode. The results demonstrated that the array PbO 2 electrode with enhanced electrocatalytic performance is a promising material for degrading organic effluents.

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Hydrothermal synthesis of photo-induced hydrophilic ZnO nanorods

Cited by 4 publications

References 9 publications

Studi Pengaruh Aliran Konveksi Pada Perbedaan Letak Substrat Proses Sintesis Struktur Kristal Zno Nanorod

Studi Pengaruh Aliran Konveksi Pada Perbedaan Letak Substrat Proses Sintesis Struktur Kristal Zno Nanorod

Photoelectrocatalytic Degradation of Methylene Blue Using ZnO Nanorods Fabricated on Silicon Substrates

Preparation and Electrocatalytic Performance of Nanosphere Array PbO₂ Electrode on Stainless Steel-Based Grid-Like ZnO Film

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Hydrothermal synthesis of photo-induced hydrophilic ZnO nanorods

Cited by 4 publications

References 9 publications

Studi Pengaruh Aliran Konveksi Pada Perbedaan Letak Substrat Proses Sintesis Struktur Kristal Zno Nanorod

Studi Pengaruh Aliran Konveksi Pada Perbedaan Letak Substrat Proses Sintesis Struktur Kristal Zno Nanorod

Photoelectrocatalytic Degradation of Methylene Blue Using ZnO Nanorods Fabricated on Silicon Substrates

Preparation and Electrocatalytic Performance of Nanosphere Array PbO2 Electrode on Stainless Steel-Based Grid-Like ZnO Film

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Preparation and Electrocatalytic Performance of Nanosphere Array PbO₂ Electrode on Stainless Steel-Based Grid-Like ZnO Film