Preparation of TiO2 nano-particle photocatalysts by a multi-gelation method: the effect of pH change

Neppolian, B.; Eddy, Diana Rakhmawaty; Sakai, S.; Okada, Yoshimi; Nishijima, Hiroaki; Anpo, Masakazu

doi:10.1007/bf03039139

Cited by 5 publications

(2 citation statements)

References 19 publications

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“…Substantially, it extends their conspicuous potential to organic chemistry areas with the involvement of relatively big molecules. Typical catalytic applications in organic chemistry cover catalytic oxidation, hydrogenation, polymerization, photocatalysis, and alkylation …”

Section: Matter Transportmentioning

confidence: 99%

Engineering Gyroid‐Structured Functional Materials via Templates Discovered in Nature and in the Lab

Zhang

2015

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In search of optimal structures for functional materials fabrication, the gyroid (G) structure has emerged as a promising subject of widespread research due to its distinct symmetry, 3D interconnected networks, and inherent chiral helices. In the past two decades, researchers have made great progress fabricating G-structured functional materials (GSFMs) based on G templates discovered both in nature and in the lab. The GSFMs demonstrate extraordinary resonance when interacting with light and matter. The superior properties of GSFMs can be divided into two categories based on the dominant structural properties, namely, dramatic optical performances dominated by short-range symmetry and well-defined texture, and effective matter transport due to long-range 3D interconnections and high integrity. In this review, G templates suitable for fabrication of GSFMs are summarized and classified. State-of-the-art optical applications of GSFMs, including photonic bandgap materials, chiral devices, plasmonic materials, and matamaterials, are systematically discussed. Applications of GSFMs involved in effective electron transport and mass transport, including electronic devices, ultrafiltration, and catalysis, are highlighted. Existing challenges that may hinder the final application of GSFMS together with possible solutions are also presented.

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Section: Matter Transportmentioning

confidence: 99%

Engineering Gyroid‐Structured Functional Materials via Templates Discovered in Nature and in the Lab

Zhang

2015

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“…TiO 2 was used alone as well as being doped with Ag metal to reduce the gape of valance and conduction band, and also to control the electron-hole recombination rate. Catalysts were then calcinated at 350ºC, 450ºC, 550ºC, 650ºC, and 750ºC to obtain desired anatase phase of TiO 2 to improve the crystallinity in order to enhance performance of the catalysts [28,35,[43][44][45]. Performance of the catalyst was evaluated by degradation (COD removal percentage) and decolorization (colour removal percentage) of synthetic textile effluent (Remazol red RGB dye containing 10 ppm concentration, pH3) through mobilized and immobilized TiO 2 and Ag-doped TiO 2 under UV (400W) irradiation for 60 mins.…”

Section: Methodsmentioning

confidence: 99%

Characterization and Optimization of Photocatalytic Activity of Sol Gel-Synthesized TiO2 and Ag-doped TiO2 through Degradation of Synthetic Textile Effluent by UV Lamp-Assisted Experimental Setup

Akram

Ahmad

Shaikh

2019

Pol. J. Environ. Stud.

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The textile industry is one of the largest producers of harmful effluent, and this has become a serious threat to the environment when disposed of into water bodies, which may lead to high pollution risk -especially in developing countries. There are several treatment methods ranging from conventional to advanced for treating textile effluent before disposal in the environment. Photocatalytic oxidation (AOPs) is the most sophisticated process among all other advanced oxidation processes. In this study, TiO 2 and Ag-doped TiO2 were used for the photcatalytic degradation of synthetic textile effluent. TiO 2 and Ag-doped TiO 2 catalyst were synthesized through two routes of sol-gel method (M1 and M2 reported in our previous study) for mobilized and immobilized utilization purposes [1], and characterization of the catalysts was carried out through X-ray diffrectrometric analysis. XRD patterns showed that catalysts synthesized by both routs of sol-gel method were initially found in amorphous form as no peak appeared in an X-ray diffractrogram at 0ºC calcination (catalyst without calcinations), whereas with an increase of temperature the amorphous form of catalyst turned into crystalline. Results showed that TiO 2 synthesized by the sol-gel route showed anatase phase at 350ºC, and peaks kept growing until 550ºC. Furthermore, at 650-750ºC anatase and rutile co-exist, while in Ag-doped TiO 2 , anatase appeared at 350-450ºC and at 550ºC anatase phase/silver co-existed, whereas at 650-750ºC anatse-silver-rutile co-existed. An X-ray diffractrogram showed that catalyst synthesized through the 2 nd sol-gel route also possessed an amorphous nature at 350ºC and peaks of anatase phase of TiO 2 appeared at 450ºC and kept growing sharper as temperature increased from 450-750ºC, whereas anatase peaks detected at 350ºC in Ag-TiO 2 , and anatase-silver co-existed at 450ºC and 550ºC. Hence, anatase disappeared *

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The influence of activated carbon annealing temperature on sunlight-driven photocatalytic dye degradation and biological activity

Aravind¹,

Ahmed²,

M³

et al. 2022

Inorganic Chemistry Communications

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Preparation of TiO2 nano-particle photocatalysts by a multi-gelation method: the effect of pH change

Cited by 5 publications

References 19 publications

Engineering Gyroid‐Structured Functional Materials via Templates Discovered in Nature and in the Lab

Engineering Gyroid‐Structured Functional Materials via Templates Discovered in Nature and in the Lab

Characterization and Optimization of Photocatalytic Activity of Sol Gel-Synthesized TiO2 and Ag-doped TiO2 through Degradation of Synthetic Textile Effluent by UV Lamp-Assisted Experimental Setup

The influence of activated carbon annealing temperature on sunlight-driven photocatalytic dye degradation and biological activity

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