Synthesis and Characterization of Anatase TiO2 Nanorods: Insights from Nanorods’ Formation and Self-Assembly

Hosseini, Seyedeh Narjes; Chen, Xiaodan; Baesjou, Patrick J.; Imhof, Arnout; Blaaderen, Alfons van

doi:10.3390/app12031614

Cited by 10 publications

(5 citation statements)

References 93 publications

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“…TiO 2 is in the metastable anatase form at low temperatures, and here some rutile peaks can be seen because of sintering. − However, the main diffraction peak at the position of Bragg’s angle of 25.2° (101) is observed in the anatase form of TiO 2 (Figure ). Moreover, other peaks which are relevant for the TiO 2 anatase form are located in the positions of Bragg’s angles of 37, 48, 53, and 62°, corresponding to the planes of (103), (004), (200), and (301), respectively.…”

Section: Resultsmentioning

confidence: 99%

Factors Affecting the Hydrophobic Property of Stearic Acid Self-Assembled on the TiO₂ Substrate

et al. 2022

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The self-assembled monolayer (SAM) on inorganic metal oxides is highly applicable in making different kinds of surface phenomena such as superhydrophobicity, functional group-modified surfaces, corrosion resistance, and so on. The formation of stearic acid SAMs on the TiO2 substrate depends on a few factors, and the cleanability of the substrate surface can be considered as the critical criterion for the formation of the SAM layer. The solvent, concentration of the adsorbate, immersion time, and temperature can be identified as other factors that are crucial for growing a uniform and highly dense monolayer. SAM layers always build up spontaneously on a suitable substrate, but the growth rate and arrangement can be changed by varying the external factors. These factors highly affect the chemisorption of stearic acid molecules onto the TiO2 substrate and building a well-ordered pattern on the surface without defects. This study mainly focuses on identifying the critical conditions of the external factors in obtaining a high-performance superhydrophobic surface. The crystal structure and surface morphologies of the substrate materials are characterized by powder X-ray diffraction and scanning electron microscopy, and the surface wettability is characterized by contact angle measurements. High superhydrophobicity is observed at the optimum conditions of the factors. Ethanol is used as the solvent; the temperature is about 40 °C; and 600 ppm of stearic acid is the critical concentration in obtaining a superhydrophobic surface with 100 min of immersion time, while the contact angle is 151.38°. Simultaneously, if the concentration is 1000 ppm and the immersion time is 120 min, the surface shows high superhydrophobicity with a contact angle of 162.06°. These critical conditions are found to be adequate for building well-ordered stearic acid SAMs on the TiO2 substrate.

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Section: Resultsmentioning

confidence: 99%

Factors Affecting the Hydrophobic Property of Stearic Acid Self-Assembled on the TiO₂ Substrate

et al. 2022

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“…Figure 3 a represents the XRD spectrum of CuCo 2 O 4 @rGO. By comparing the sample’s XRD peaks with the standard PDF cards, we identified the predominant presence of CuCo 2 O 4 , corresponding to the JCPDS 001-1155 [ 23 ] standard card.…”

Section: Resultsmentioning

confidence: 99%

Introducing CuCo2S4 Nanoparticles on Reduced Graphene Oxide for High-Performance Supercapacitor

Fang,

Yang,

Zhang

et al. 2024

Nanomaterials

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In this work, a bimetallic sulfide-coupled graphene hybrid was designed and constructed for capacitive energy storage. The hybrid structure involved decorating copper–cobalt–sulfide (CuCo2S4) nanoparticles onto graphene layers, with the nanoparticles anchored within the graphene layers, forming a hybrid energy storage system. In this hybrid structure, rGO can work as the substrate and current collector to support the uniform distribution of the nanoparticles and provides efficient transportation of electrons into and out of the electrode. In the meantime, CuCo2S4-active materials are expected to offer an evident enhancement in electrochemical activities, due to the rich valence change provided by Cu and Co. Benefiting from the integrated structure of CuCo2S4 nanoparticles and highly conductive graphene substrates, the prepared CuCo2S4@rGO electrode exhibited a favorable capacitive performance in 1 M KOH. At 1 A g−1, CuCo2S4@rGO achieved a specific capacitance of 410 F g−1. The capacitance retention at 8 A g−1 was 70% of that observed at 1 A g−1, affirming the material’s excellent rate capability. At the current density of 5 A g−1, the electrode underwent 10,000 charge–discharge cycles, retaining 98% of its initial capacity, which indicates minimal capacity decay and showcasing excellent cycling performance.

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“…Moreover, the austenite peak intensities for the stainless steel substrate at 2 θ = 43° (111) and 2 θ = 54° (200) decreased when the solution concentration was increased. On the other hand, the peak at 35° is typical of TiO 2 -B [ 21 ], which was detected in the XRD patterns of FS1, FS2, and FS3 coatings in Figure 7 and Figure 8 . TiO 2 -B is a crystalline form of titania with a looser structure than that of anatase and rutile.…”

Section: Resultsmentioning

confidence: 99%

Solution Precursor Plasma Spraying of TiO2 Coatings Using a Catalyst-Free Precursor

et al. 2023

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The microstructural characteristics and phase composition of solution precursor plasma-sprayed (SPPS) titania-based coatings using a catalyst-free precursor are reported in this work. An ethanol-based solution containing titanium isopropoxide was used to deposit TiO2 coatings. The thermal behavior of the solution precursor changed as its phase transformation temperature increased when the molar concentration was increased from 0.3 M to 0.6 M. Scanning electron micrographs showed that the surface of the coatings was composed of nano- and submicron-sized spherical particles (<1 μm) with sintered and melted particles. The cross-sections showed a porous structure using lower concentrations and dense coating formation with micropores using higher concentrations, with thicknesses of about 5 µm–8 µm. Moreover, the coatings when the number of spray passes was increased were 16 µm–20 µm thick, giving an average layer thickness of 0.6 µm deposited per spray pass in all cases. Phase analysis revealed the presence of both the anatase and rutile phases of TiO2 in coatings sprayed with various concentrations at various stand-off distances. More detailed discussion is presented with respect to the effects of the solution concentration, stand-off distance, and number of spray passes on the coating’s phase composition and microstructure.

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Synthesis and Characterization of Anatase TiO2 Nanorods: Insights from Nanorods’ Formation and Self-Assembly

Cited by 10 publications

References 93 publications

Factors Affecting the Hydrophobic Property of Stearic Acid Self-Assembled on the TiO₂ Substrate

Factors Affecting the Hydrophobic Property of Stearic Acid Self-Assembled on the TiO₂ Substrate

Introducing CuCo2S4 Nanoparticles on Reduced Graphene Oxide for High-Performance Supercapacitor

Solution Precursor Plasma Spraying of TiO2 Coatings Using a Catalyst-Free Precursor

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Synthesis and Characterization of Anatase TiO2 Nanorods: Insights from Nanorods’ Formation and Self-Assembly

Cited by 10 publications

References 93 publications

Factors Affecting the Hydrophobic Property of Stearic Acid Self-Assembled on the TiO2 Substrate

Factors Affecting the Hydrophobic Property of Stearic Acid Self-Assembled on the TiO2 Substrate

Introducing CuCo2S4 Nanoparticles on Reduced Graphene Oxide for High-Performance Supercapacitor

Solution Precursor Plasma Spraying of TiO2 Coatings Using a Catalyst-Free Precursor

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Factors Affecting the Hydrophobic Property of Stearic Acid Self-Assembled on the TiO₂ Substrate

Factors Affecting the Hydrophobic Property of Stearic Acid Self-Assembled on the TiO₂ Substrate