A novel Zn–TiO<sub>2</sub>/C@SiO<sub>2</sub>nanoporous material on rice husk for photocatalytic applications under visible light

Chen, Hui; Zhao, Liancheng; Xiang, Ying; He, Yu; Song, Guang; Wang, Xitang; Liang, Feng

doi:10.1080/19443994.2015.1035339

Cited by 21 publications

(6 citation statements)

References 43 publications

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“…82 The sol-gel method has been widely adopted for preparing ash-and clay mineralsbased metal oxide composites. [83][84][85][86][87][88] For example, TiO 2 loaded y ash (FA) catalysts were obtained by adding titanium tetraisopropoxide to acetic acid under continuous stirring for 120 min at 50 C, and then mixing with an aqueous suspension of the FA before drying process and calcination at 500 C. 89 Similarly, Zn-doped TiO 2 /C@SiO 2 nanoporous with rice husk (RH) as a template was prepared by the addition of Zn-RHA to titania sols and impregnation for 24 h, followed by drying in at 100 C for another 24 h. 90…”

Section: Sol-gel Immobilizationmentioning

confidence: 99%

Fly ash-, foundry sand-, clay-, and pumice-based metal oxide nanocomposites as green photocatalysts

2021

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Section: Sol-gel Immobilizationmentioning

confidence: 99%

Fly ash-, foundry sand-, clay-, and pumice-based metal oxide nanocomposites as green photocatalysts

2021

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“…There is only ~ 4-5% of solar light being within the UV range, while the visible light contributes about 50% of the total power. Therefore, many attempts were made to attain visible-light-induced photocatalytic activities, for instance, structure modification, metal and nonmetal doping, co-deposition of metals, and mixing of two semiconductors (Ref 72 - 75 ).…”

Section: Thermal-sprayed Photocatalytic Coatingsmentioning

confidence: 99%

Thermal-Sprayed Photocatalytic Coatings for Biocidal Applications: A Review

et al. 2020

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There have been ever-growing demands for disinfection of water and air in recent years. Efficient, eco-friendly, and cost-effective methods of disinfection for pathogens are vital to the health of human beings. The photocatalysis route has attracted worldwide attention due to its highly efficient oxidative capabilities and sustainable recycling, which can be used to realize the disinfection purposes without secondary pollution. Though many studies have comprehensively reviewed the work about photocatalytic disinfection, including design and fabrication of photocatalytic coatings, inactivation mechanisms, or practical applications, systematic reviews about the disinfection photocatalysis coatings from fabrication to effort for practical use are still rare. Among different ways of fabricating photocatalytic materials, thermal spray is a versatile surface coating technique and competitive in constructing large-scale functional coatings, which is a most promising way for the future environmental purification, biomedical and life health applications. In this review, we briefly introduced various photocatalytic materials and corresponding inactivation mechanisms for virus, bacteria and fungus. We summarized the thermal-sprayed photocatalysts and their antimicrobial performances. Finally, we discussed the future perspectives of the photocatalytic disinfection coatings for potential applications. This review would shed light on the development and implementation of sustainable disinfection strategies that is applicable for extensive use for controlling pathogens in the near future.

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“…Doping of TiO 2 with nonmetal/halogen elements such as C, N, S, F, and Cl could induce a bathochromic shift in absorption of TiO 2 100 . The reason of this chromic phenomenon could be attributed to the presence of biotemplate originated self‐doped anions, for example, N in the TiO 2 structure 57 as verified by XPS analysis (Figure 11).…”

Section: Resultsmentioning

confidence: 78%

“…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%

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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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A novel Zn–TiO₂/C@SiO₂nanoporous material on rice husk for photocatalytic applications under visible light

Cited by 21 publications

References 43 publications

Fly ash-, foundry sand-, clay-, and pumice-based metal oxide nanocomposites as green photocatalysts

Fly ash-, foundry sand-, clay-, and pumice-based metal oxide nanocomposites as green photocatalysts

Thermal-Sprayed Photocatalytic Coatings for Biocidal Applications: A Review

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

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A novel Zn–TiO2/C@SiO2nanoporous material on rice husk for photocatalytic applications under visible light

Cited by 21 publications

References 43 publications

Fly ash-, foundry sand-, clay-, and pumice-based metal oxide nanocomposites as green photocatalysts

Fly ash-, foundry sand-, clay-, and pumice-based metal oxide nanocomposites as green photocatalysts

Thermal-Sprayed Photocatalytic Coatings for Biocidal Applications: A Review

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

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A novel Zn–TiO₂/C@SiO₂nanoporous material on rice husk for photocatalytic applications under visible light

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