Growth of ZnO Nanorods on Stainless Steel Wire Using Chemical Vapour Deposition and Their Photocatalytic Activity

Aziz, Siti Nor Qurratu Aini Abd; Pung, Swee‐Yong; Ramli, Nurul Najiah; Lockman, Zainovia

doi:10.1155/2014/252851

Cited by 10 publications

(2 citation statements)

References 25 publications

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“…Indeed a clear well-established Zn 2p 3/2 peak is observed at 202nd and 270th ALD cycles on fluorocarbon/Si. This peak is observed at a binding energy value of 1022.12 eV and corresponds to the Zn–O bond . These results show excellent correlation with all the characterization results provided so far.…”

Section: Resultssupporting

confidence: 88%

Area-Selective Atomic Layer Deposition Using an Inductively Coupled Plasma Polymerized Fluorocarbon Layer: A Case Study for Metal Oxides

et al. 2016

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Area-selective atomic layer deposition (AS-ALD) has attracted immense attention in recent years for self-aligned accurate pattern placement with subnanometer thickness control. Here, we demonstrate a methodology to achieve AS-ALD by using inductively couple plasma (ICP) grown fluorocarbon polymer film as hydrophobic blocking layer for selective deposition. Our approach has been tested for metal-oxide materials including ZnO, Al 2 O 3 , and HfO 2. Contact angle, X-ray photoelectron spectroscopy (XPS), spectroscopic ellipsometer, and scanning electron microscopy (SEM) measurements were performed to investigate the blocking ability of plasma polymerized fluorocarbon layers against ALD-grown metal-oxide films. A considerable growth inhibition for ZnO has been observed on fluorocarbon coated Si(100) surfaces, while the same polymerized surface caused a relatively slow nucleation for HfO 2 films. No growth selectivity was obtained for Al 2 O 3 films, displaying almost the same nucleation behavior on Si and fluorocarbon surfaces. Thin film patterning has been demonstrated using this strategy by growing ZnO on lithographically patterned fluorocarbon/Si samples. High resolution SEM images and XPS line scan confirmed the successful patterning of ZnO up to a film thickness of ∼15 nm.

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Section: Resultssupporting

confidence: 88%

Area-Selective Atomic Layer Deposition Using an Inductively Coupled Plasma Polymerized Fluorocarbon Layer: A Case Study for Metal Oxides

et al. 2016

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“…In AOP, highly reactive radicals are generated that convert the organic pollutants into less hazardous products having potential to oxidize them. Many nanomaterials such as metal oxide semiconductors including zinc oxide (ZnO) (Aziz et al 2014;Chan et al 2013;Daneshvar et al 2007;Hong et al 2009;Xie et al 2011), titanium dioxide (TiO 2 ) (Chan et al 2014;Esfahani et al 2012;Smijs and Pavel 2011), Copper oxide (CuO) (Mehr et al 2018), Tungsten Oxide (WO 3 ) (Tahir et al 2018b) have been reported as wide band gap photocatalyst for degradation of pollutants under the Ultraviolet (UV) light. As the solar light spectrum contains 45% of visible light and less than 10% of UV light (Chan et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Highly efficient and visible light–driven nickel–doped vanadium oxide photocatalyst for degradation of Rhodamine B Dye

Rafique¹,

Hamza

Shakil

et al. 2020

Appl Nanosci

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Water pollution has become serious threat for environment and society. Due to failure of different methods, semiconductor photocatalyst based advance oxidation process has attracted a huge interest for wastewater treatment. In this work, Nickel-doped vanadium pentaoxide (Ni doped-V 2 O 5 ) is synthesized using easy and facile sol-gel synthesis route and the synthesized material is characterized through various characterization tools. The orthorhombic phase was detected in which decrease in crystallite size is observed with addition of dopant. The SEM analysis revealed that layered structure is formed with sufficient surface area and Energy Dispersive X-ray spectroscopy (EDX) represented the purity of samples. UV-Vis and Photoluminescence spectroscopies provide the information about the absorption and band gap of material and confirm the visible light response of the prepared catalysts. The photodegradation of RhB was evaluated through employing Ni doped-V 2 O 5 photocatalyst which exhibited the 100% dye removal and high photostability. The factors which can affect the performance of catalytic activity are also studied to optimize the parameters for maximum dye removal. The kinetic study was also performed which showed that the synthesized materials follows pseudo first order kinetics.

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ZnO nanostructured matrix as nexus catalysts for the removal of emerging pollutants

Matei,

Șăulean,

Râpă

et al. 2023

Environ Sci Pollut Res

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Water pollution stands as a pressing global environmental concern, elevating the significance of innovative, dependable, and sustainable solutions. This study represents an extensive review of the use of photocatalytic zinc oxide nanoparticles (ZnO NPs) for the removal of emerging pollutants from water and wastewater. The study examines ZnO NPs’ different preparation methods, including physical, chemical, and green synthesis, and emphasizes on advantages, disadvantages, preparation factors, and investigation methods for the structural and morphological properties. ZnO NPs demonstrate remarkable properties as photocatalysts; however, their small dimensions pose an issue, leading to potential post-use environmental losses. A strategy to overcome this challenge is scaling up ZnO NP matrices for enhanced stability and efficiency. The paper introduces novel ZnO NP composites, by incorporating supports like carbon and clay that serve as photocatalysts in the removal of emerging pollutants from water and wastewater. In essence, this research underscores the urgency of finding innovative, efficient, and eco-friendly solutions for the removal of emerging pollutants from wastewater and highlights the high removal efficiencies obtained when using ZnO NPs obtained from green synthesis as a photocatalyst. Future research should be developed on the cost–benefit analysis regarding the preparation methods, treatment processes, and value-added product regeneration efficiency. Graphical Abstract

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Growth of ZnO Nanorods on Stainless Steel Wire Using Chemical Vapour Deposition and Their Photocatalytic Activity

Cited by 10 publications

References 25 publications

Area-Selective Atomic Layer Deposition Using an Inductively Coupled Plasma Polymerized Fluorocarbon Layer: A Case Study for Metal Oxides

Area-Selective Atomic Layer Deposition Using an Inductively Coupled Plasma Polymerized Fluorocarbon Layer: A Case Study for Metal Oxides

Highly efficient and visible light–driven nickel–doped vanadium oxide photocatalyst for degradation of Rhodamine B Dye

ZnO nanostructured matrix as nexus catalysts for the removal of emerging pollutants

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