Recent advances in nano-photocatalysts for organic synthesis

Radhika, N. P; Selvin, Rosilda; Kakkar, Rita; Umar, Ahmad

doi:10.1016/j.arabjc.2016.07.007

Cited by 61 publications

(23 citation statements)

References 206 publications

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“…Moreover, the present lack of extensive commercial applications is due to absence of effective photoreactor configurations and lower photocatalytic competence of photocatalysts. Despite all, heterogeneous nanophotocatalyst recommend fascinating advantages i.e., inexpensive usage of chemicals, additive free, work even at lower concentration, chemical stability (e.g., TiO 2 stable in aqueous medium) [66]. Therefore, recently heterogeneous photocatalysis is achieving the pre-industrial scale.…”

Section: Water Pollutants Source Of Pollutants Effect Of Pollutants Rmentioning

confidence: 99%

Role of Nanomaterials in the Treatment of Wastewater: A Review

Yaqoob

Parveen

Umar

et al. 2020

Water

522

160

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Water is an essential part of life and its availability is important for all living creatures. On the other side, the world is suffering from a major problem of drinking water. There are several gases, microorganisms and other toxins (chemicals and heavy metals) added into water during rain, flowing water, etc. which is responsible for water pollution. This review article describes various applications of nanomaterial in removing different types of impurities from polluted water. There are various kinds of nanomaterials, which carried huge potential to treat polluted water (containing metal toxin substance, different organic and inorganic impurities) very effectively due to their unique properties like greater surface area, able to work at low concentration, etc. The nanostructured catalytic membranes, nanosorbents and nanophotocatalyst based approaches to remove pollutants from wastewater are eco-friendly and efficient, but they require more energy, more investment in order to purify the wastewater. There are many challenges and issues of wastewater treatment. Some precautions are also required to keep away from ecological and health issues. New modern equipment for wastewater treatment should be flexible, low cost and efficient for the commercialization purpose.

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Section: Water Pollutants Source Of Pollutants Effect Of Pollutants Rmentioning

confidence: 99%

Role of Nanomaterials in the Treatment of Wastewater: A Review

Yaqoob

Parveen

Umar

et al. 2020

Water

522

160

View full text Add to dashboard Cite

show abstract

“…Structural and surface properties, including surface area, porosity, crystal composition, particle size distribution, and band gap energy, are able to affect the photocatalytic activity of the catalyst [35]. The following characteristics typically represent nanophotocatalysts with specific favorable benefits over bulk materials [36]. First, their large surface area to volume ratio results in a high particle fraction, and subsequently a high division of active sites on the catalyst surface.…”

Section: Types and Characteristics Of Nanophotocatalystsmentioning

confidence: 99%

Biomedical Waste Management by Using Nanophotocatalysts: The Need for New Options

et al. 2020

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Biomedical waste management is getting significant consideration among treatment technologies, since insufficient management can cause danger to medicinal service specialists, patients, and their environmental conditions. The improvement of waste administration protocols, plans, and policies are surveyed, despite setting up training programs on legitimate waste administration for all healthcare service staff. Most biomedical waste substances do not degrade in the environment, and may also not be thoroughly removed through treatment processes. Therefore, the long-lasting persistence of biomedical waste can effectively have adverse impact on wildlife and human beings, as well. Hence, photocatalysis is gaining increasing attention for eradication of pollutants and for improving the safety and clearness of the environment due to its great potential as a green and eco-friendly process. In this regard, nanostructured photocatalysts, in contrast to their regular counterparts, exhibit significant attributes such as non-toxicity, low cost and higher absorption efficiency in a wider range of the solar spectrum, making them the best candidate to employ for photodegradation. Due to these unique properties of nanophotocatalysts for biomedical waste management, we aim to critically evaluate various aspects of these materials in the present review and highlight their importance in healthcare service settings.

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“…Meanwhile photoreduction is used to deposit the noble metal particles on a semiconductor using light irradiation [48]. This method is simple as the preparation time is shorter than other methods.…”

Section: Impregnation -Precipitation -Photoreductionmentioning

confidence: 99%

Visible Light Driven Photocatalystfor Degradation of Organophosphate Pesticides: A Review

2019

BJoST

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Organophosphates (OPs) are insecticide used to replace the persistence organochlorines (OCs). OPs are the effective insecticide used to control pests to enhance crops productions. Due to the strong recalcitrant properties, OPs cannot totally be degraded by conventional wastewater treatment process and the effluent causes negative impacts to the environment. The effectiveness of the AOPs is relied on the strong radical namely hydroxyl radicals (•OH) which can convert the pollutants into less harmful products. Photocatalysis is one of the AOPs widely practiced in water treatment process. A good photocatalyst must able to promote the electron from its valance band to the conduction band and the prevent the photogenerated electrons from returning to its valance band. The electron generated was further reacted with oxygen to form peroxyl radicals, •O2-. The hole (h+) formed was then react with water molecule to form •OH. Titanium dioxide, TiO2 is well known photocatalyst which only can be activated under ultra-violet light. Visible light photocatalysts are in the current research trend as they are found to be an effective method to degrade contaminants in wastewater. Various type of dopants has been doped on the TiO2 with different method purposely to shift the absorption of light from the UV light region to visible light region. The purpose of this review is to present the studies on different preparation method of the modified TiO2 and application of the modified TiO2 in degrading different types of OP pesticides. Finally, the need for present and further research on OPs wastewater also briefly discussed.

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Recent advances in nano-photocatalysts for organic synthesis

Cited by 61 publications

References 206 publications

Role of Nanomaterials in the Treatment of Wastewater: A Review

Role of Nanomaterials in the Treatment of Wastewater: A Review

Biomedical Waste Management by Using Nanophotocatalysts: The Need for New Options

Visible Light Driven Photocatalystfor Degradation of Organophosphate Pesticides: A Review

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