Preparation of Nanoporous TiO2/SiO2 Composite with Rice Husk as Template and Its Photocatalytic Property

Chen, Hui; Zhao, Liancheng; Wang, Xitang; Li, Shujing; Lei, Zhongxing

doi:10.1016/s1875-5372(15)30101-6

Cited by 17 publications

(6 citation statements)

References 20 publications

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“…00-004-0477. Moreover, in line with (2015).Hui et al [22], the small peak at around 2θ=13° would reveal the presence of amorphous SiO 2 . The transition from anatase to rutile structure was observed forpure TiO 2 at 1000°C.Nonetheless, this phase transformation was not observed for the TiO 2 -SiO 2 nanocomposites treated at the same temperature.…”

Section: Iii12 Xrd Analysis Of the Nanocompositessupporting

confidence: 82%

Mechanical and thermal properties of a nanocomposite made of a polymer matrix reinforced by a binary nanoparticle TiO2 - SiO2 produced by sol-gel method

Zahrouni

Benammar

Harzallah

et al. 2023

Preprint

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This study investigated the effect of adding 5% wt of SiO2-TiO2 nanoparticles to polyester-fiberglass on the structural, mechanical and thermal behaviours of the nanocomposite. For this purpose, scanning electron microscopy (SEM) and a Fourier transform infrared spectroscopy (FTIR) were used to examine the surface modification and morphology of the nanocomposites. After the heat treatment of this materialat different compositions, it was observed that its crystalline state was changed and a rutile structure appeared in the treated nanofillers. However, the presence of SiO2 seemed to prevent the complete conversion to this structure. Hence, this change in the microstate affected the mechanical and behavior of the nanocomposite. Indeed, theaddition of 5% wt divided in 75%SiO2-25%TiO2 to the nanocomposite increasedits Young’s modulus by 15.15% and its microhardness by 14%. Furthermore, in terms of thermal behaviour, the addition of 5% wt divided in 75%SiO2-25%TiO2 yieldeda thermal resistance of TG = 49.66 °C. These results would imply the production of nanocomposite with a specific high resistance, a high modulus and a good fatigue resistance which would present a potential replacement for other materials in various industrial applications.

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Section: Iii12 Xrd Analysis Of the Nanocompositessupporting

confidence: 82%

Mechanical and thermal properties of a nanocomposite made of a polymer matrix reinforced by a binary nanoparticle TiO2 - SiO2 produced by sol-gel method

Zahrouni

Benammar

Harzallah

et al. 2023

Preprint

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“…have not yet completely fulfilled their potential in the agriculture sector. MNS porosity and tunable interior and surface characteristics, as well as their diameter and shape, enable them to function as cargo or vehicle that can load and unload proteins, nutrients, and tiny molecules or chemicals into the soil system [13]. In the present study, a simple sol gel approach was used to synthesize Mesoporous nanosilica (MNS) and it was characterized with FTIR, XRD, FESEM, and HR-TEM.…”

Section: Mnsmentioning

confidence: 99%

Synthesis and Characterization of Mesoporous Nanosilica Derived from Rice Husk Ash

Sasidhar,

Malathi,

Rahale

et al. 2023

IJECC

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Rice husk, an abundant agricultural byproduct, has garnered attention as a potential source of natural silica, a material with a myriad of applications. Natural silica is particularly attractive due to its low cost of production and safe handling. In this study, sodium silicate derived from rice husk ash was employed to create mesoporous nanosilica (MNS) via the sol-gel process. The extraction process commenced with the utilization of rice husk as a precursor for silica, capitalizing on its silica-rich composition. Fourier-transform infrared (FTIR) analysis was performed to ascertain the presence of Si-O-Si bonds within the synthesized MNS. This critical step confirmed the successful formation of silica-based materials. Subsequently, X-ray diffraction (XRD) analysis was employed, revealing a significant peak at 22 degrees, a clear indicator of the presence of crystalline silica. Examining the morphology of the MNS, field-emission scanning electron microscopy (FESEM) results showcased a smooth surface and spherical morphology. Additionally, high-resolution transmission electron microscopy (HR-TEM) was employed, revealing the presence of nanoparticles smaller than 100 nanometers, which is indicative of the mesoporous nature of the synthesized nanosilica. Characterization techniques, including FTIR, XRD, FESEM, and HR-TEM, provided compelling evidence of successful nanosilica extraction. The findings underscore the potential of utilizing agricultural waste products for the sustainable production of valuable materials like nanosilica, which holds promise in various industrial applications. This research not only contributes to the valorization of agricultural residues but also aligns with the pursuit of eco-friendly and cost-effective materials for a wide range of applications.

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“…Investigations performed to evaluate agricultural residues such as RH and RHA and to prepare respective TiO 2 photocatalysts are highly notable and important for waste minimization and/or reuse purposes. So far, RH has been used as a silica and/or carbon source to prepare biological hierarchical porous TiO 2 photocatalysts 57–67 …”

Section: Introductionmentioning

confidence: 99%

“…So far, RH has been used as a silica and/or carbon source to prepare biological hierarchical porous TiO 2 photocatalysts. [57][58][59][60][61][62][63][64][65][66][67] The major aim of this study was to use RH as a biotemplate in the synthesis of TiO 2 hierarchical microstructure photocatalyst (TiO 2 -HMP), thereby obtaining a specific route to reduce environmental pollution challenges by utilizing this agricultural waste. More significantly, due to the presence of non-metallic elements (e.g., C, N, S, Si) in RH, TiO 2 -HMP was expected to be self-doped during calcination, leading to enhancement of light absorption.…”

Section: Introductionmentioning

confidence: 99%

A facile synthesis of bio‐inspired hierarchical microstructure TiO₂: Characterization and photocatalytic activity

Türkten

Karataş

Karatas

et al. 2022

Env Prog and Sustain Energy

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Hierarchical photocatalysts have attracted notable concern due to their excellent features such as lower density, higher specific surface area, higher light-harvesting efficiency, and good surface permeability. Generally, such particular properties are achieved via the use of templates, preferentially focusing on natural biological materials.In this respect, rice husk (RH), an environmental waste containing elements C, N, S, and Si was used as a biotemplate to prepare TiO 2 hierarchical microstructure photocatalyst (TiO 2 -HMP) along with TiO 2 nanoparticle photocatalyst (TiO 2 -NP) by a facile sol-gel method. RH and the prepared TiO 2 photocatalysts were characterized by using Fourier transform infrared (FTIR), X-ray powder diffraction (XRD), environmental scanning electron microscope-energy dispersive X-ray analysis (ESEM-EDAX), X-ray photoelectron spectroscopy (XPS), UV-visible diffuse reflectance spectroscopy (UV-DRS), photoluminescence (PL), and Brunauer-Emmett-Teller (BET) methods. The combination of RH and TiO 2 via biotemplate strategy not only altered the band gap (E bg = 2.74 eV) also slightly increased the surface area ($10%). The photocatalytic activities of TiO 2 -NP and TiO 2 -HMP specimens were determined by degradation of 4-nitrophenol (4-NPh) under UV-A light irradiation. TiO 2 -HMP exhibited enhanced photocatalytic activity (≥10%) compared to TiO 2 -NP most probably due to RH originated in-situ self-codoping by the presence of multidopant ions (C, N, S, and Si ions) as verified by EDAX elemental weight distribution profiles. These results demonstrated a beneficial use of an environmental waste in photocatalytic applications.

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Preparation of Nanoporous TiO2/SiO2 Composite with Rice Husk as Template and Its Photocatalytic Property

Cited by 17 publications

References 20 publications

Mechanical and thermal properties of a nanocomposite made of a polymer matrix reinforced by a binary nanoparticle TiO2 - SiO2 produced by sol-gel method

Mechanical and thermal properties of a nanocomposite made of a polymer matrix reinforced by a binary nanoparticle TiO2 - SiO2 produced by sol-gel method

Synthesis and Characterization of Mesoporous Nanosilica Derived from Rice Husk Ash

A facile synthesis of bio‐inspired hierarchical microstructure TiO₂: Characterization and photocatalytic activity

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Preparation of Nanoporous TiO2/SiO2 Composite with Rice Husk as Template and Its Photocatalytic Property

Cited by 17 publications

References 20 publications

Mechanical and thermal properties of a nanocomposite made of a polymer matrix reinforced by a binary nanoparticle TiO2 - SiO2 produced by sol-gel method

Mechanical and thermal properties of a nanocomposite made of a polymer matrix reinforced by a binary nanoparticle TiO2 - SiO2 produced by sol-gel method

Synthesis and Characterization of Mesoporous Nanosilica Derived from Rice Husk Ash

A facile synthesis of bio‐inspired hierarchical microstructure TiO2: Characterization and photocatalytic activity

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A facile synthesis of bio‐inspired hierarchical microstructure TiO₂: Characterization and photocatalytic activity