Recent progress in photocatalytic degradation of chlorinated phenols and reduction of heavy metal ions in water by TiO<sub>2</sub>-based catalysts

Shoneye, Ayoola; Chang, Jang Sen; Chong, Meng Nan; Tang, Junwang

doi:10.1080/09506608.2021.1891368

Cited by 66 publications

(24 citation statements)

References 149 publications

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“…40 This technology can also be used to reduce heavy metal ions, degrade organic pollutants, and so on. 41,42 It can also protect soil and water sources, and effectively improve our environment. Generally speaking, the photocatalytic process can be simplied into the following steps.…”

Section: The Theory Of Photocatalysis and The Basic Principles Of Pho...mentioning

confidence: 99%

Recent progress on van der Waals heterojunctions applied in photocatalysis

et al. 2022

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Section: The Theory Of Photocatalysis and The Basic Principles Of Pho...mentioning

confidence: 99%

Recent progress on van der Waals heterojunctions applied in photocatalysis

et al. 2022

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“…Nemours adsorbent materials like; alumina (Al2O3) [7], activated carbon [15], graphene oxide [4], titanium dioxide (TiO2) [16], kaolin clay [17], and silica [4,6], etc. have been reported as adsorbents for sequestration of metal ions from wastewater.…”

Section: Metalmentioning

confidence: 99%

“…On the other hand, researchers have been using numerous commercial adsorbent materials such as; alumina, activated carbon, silica, titanium dioxide TiO2, halloysite nanotube (HNT), and graphene oxide, etc. [4,7,8,15,16]. The main disadvantages of these traditional adsorbents are their low adsorption efficiencies, comparatively fragile interactions with metal ions, and complications of capturing and regeneration of some of them from wastewater [4].…”

Section: Hybrid Adsorbentsmentioning

confidence: 99%

Hybrid bioadsorbents for heavy metal decontamination from wastewater: A review

Taleb

Halawani

Neamtallah

et al. 2022

International Journal of Materials Technology and Innovation

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Wastewater containing heavy metals (HMs) beyond permissible limit has to be decontaminated by an appropriate treatment method. Numerous conventional methods have been applied for heavy metal decontamination including chemical precipitation, ion exchange, electrolysis and membrane applications, etc. Most conventional methods are less efficient for the decontamination of metals due to the resistance and persistence of HMs in wastewater. Even so, the conventional methods have their limitations; adsorption using low-cost hybrid bioadsorbents has been explored as an environmentally friendly method for the removal of metal ions from wastewater. This review has been summarized the sources and effects of different heavy metals in the water/wastewater. The possible treatment methods also highlighted their advantages and limitations. Factors affecting the biosorption process such as bioadsorbent dosage, solution pH, contact time, initial concentration, temperature, and ionic potentials attracting to metal ions have been evaluated by the published researches. Moreover, the possible mechanisms of metal biosorption were discussed in light of previous studies. According to this review, hybrid bioadsorbents are outstanding materials due to their exciting physicochemical properties and other characteristics including eco-friendly nature, low cost, nontoxic, high adsorption capacity, and reusability. This review could be considered as a precious pathway for exploring more low-cost, environmentally friendly hybrid adsorbents for metal decontamination from wastewater, eventually, the review will contribute to environmental remediation and purification applications of biomaterials.

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“…To obtain decent hydrogenation, the experimental conditions in the synthesis process play a significant role in controlling properties of the materials. It has been found that the reactor materials impact the properties: stainless-steel reactor resulted in black powder, while in quartz reactor blue powder was obtained indicating different extents of reduction [ 147 , 148 ]. The initial powder was prepared via mixing 2 g of TiO 2 in 50 mL NaOH at 120 °C for 48 h, then washed in water and HCl followed by drying overnight at 110 °C to yield titanate nanotubes [ 142 ].…”

Section: Strategy Iv: Modified Tio 2 Nanostructure...mentioning

confidence: 99%

Photocatalytic Carbon Dioxide Conversion by Structurally and Materially Modified Titanium Dioxide Nanostructures

Fawzi

Rani

Roy

et al. 2022

IJMS

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TiO2 has aroused considerable attentions as a promising photocatalytic material for decades due to its superior material properties in several fields such as energy and environment. However, the main dilemmas are its wide bandgap (3–3.2 eV), that restricts the light absorption in limited light wavelength region, and the comparatively high charge carrier recombination rate of TiO2, is a hurdle for efficient photocatalytic CO2 conversion. To tackle these problems, lots of researches have been implemented relating to structural and material modification to improve their material, optical, and electrical properties for more efficient photocatalytic CO2 conversion. Recent studies illustrate that crystal facet engineering could broaden the performance of the photocatalysts. As same as for nanostructures which have advantages such as improved light absorption, high surface area, directional charge transport, and efficient charge separation. Moreover, strategies such as doping, junction formation, and hydrogenation have resulted in a promoted photocatalytic performance. Such strategies can markedly change the electronic structure that lies behind the enhancement of the solar spectrum harnessing. In this review, we summarize the works that have been carried out for the enhancement of photocatalytic CO2 conversion by material and structural modification of TiO2 and TiO2-based photocatalytic system. Moreover, we discuss several strategies for synthesis and design of TiO2 photocatalysts for efficient CO2 conversion by nanostructure, structure design of photocatalysts, and material modification.

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Recent progress in photocatalytic degradation of chlorinated phenols and reduction of heavy metal ions in water by TiO₂-based catalysts

Abstract: Tang (2021): Recent progress in photocatalytic degradation of chlorinated phenols and reduction of heavy metal ions in water by TiO 2 -based catalysts, International Materials Reviews,

Cited by 66 publications

References 149 publications

Recent progress on van der Waals heterojunctions applied in photocatalysis

Recent progress on van der Waals heterojunctions applied in photocatalysis

Hybrid bioadsorbents for heavy metal decontamination from wastewater: A review

Photocatalytic Carbon Dioxide Conversion by Structurally and Materially Modified Titanium Dioxide Nanostructures

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Recent progress in photocatalytic degradation of chlorinated phenols and reduction of heavy metal ions in water by TiO2-based catalysts

Abstract: Tang (2021): Recent progress in photocatalytic degradation of chlorinated phenols and reduction of heavy metal ions in water by TiO 2 -based catalysts, International Materials Reviews,

Cited by 66 publications

References 149 publications

Recent progress on van der Waals heterojunctions applied in photocatalysis

Recent progress on van der Waals heterojunctions applied in photocatalysis

Hybrid bioadsorbents for heavy metal decontamination from wastewater: A review

Photocatalytic Carbon Dioxide Conversion by Structurally and Materially Modified Titanium Dioxide Nanostructures

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Product

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Recent progress in photocatalytic degradation of chlorinated phenols and reduction of heavy metal ions in water by TiO₂-based catalysts