Continuous photocatalysis via Z-scheme based nanocatalyst system for environmental remediation of pharmaceutically active compound: Modification, reaction site, defect engineering and challenges on the nanocatalyst

Swedha, M.; Balasurya, S.; Syed, Asad; Das, Arunava; Khan, S. Sudheer

doi:10.1016/j.molliq.2022.118745

Cited by 20 publications

(8 citation statements)

References 221 publications

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“…What is worse, the long-term exposure to TCs induces chronic and even acute disease, endangering humans and the ecosystem [6]. To overcome the harmful impacts of TCs in water, various strategies have been explored in previous works, including adsorption [7,8], advanced oxidation [9,10], biodegradation [11,12], electrocatalysis [13,14], photocatalysis [15,16], filtration [17], and flocculation [18]. Among these approaches, photocatalysis is the most promising route to eliminate TCs through the conversion of solar light to chemical and thermal energies.…”

Section: Introductionmentioning

confidence: 99%

Mg–Fe Layered Double Hydroxides/Polyacrylonitrile Nanofibers for Solar-Light Induced Peroxymonosulfate Elimination of Tetracycline Hydrochloride

Peng,

Ye,

Luo

et al. 2024

Water

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The photo-induced peroxymonosulfate (photo-PMS) reaction is a promising route to eliminate antibiotics from waste water. To achieve excellent photo-PMS activity in Mg–Fe layered double hydroxides (LDHs) for tetracycline hydrochloride (TCH) degradation under simulative solar-light irradiation, Mg–Fe LDHs-loaded polyacrylonitrile (Mg–Fe/PAN) nanofibers were in-situ prepared via the hydrothermal route. For comparison to the photocatalysis and photo-PMS process, the Mg–Fe/PAN-assisted photo-PMS process exhibited a better elimination activity for TCH elimination. In addition, the photo-PMS activities of Mg–Fe/PAN composites were greatly affected by Mg–Fe LDHs content, TCH concentration, pH, and inorganic salts. Among these Mg–Fe/PAN composites, the optimal MgFe2/PAN with a Mg/Fe molar ratio of 1:2 and a nominal Mg–Fe LDHs content of 2.0 wt. % removed 81.31% TCH solution of 80 mg L−1 TCH within 120 min. This enhanced photo-PMS capacity of MgFe2/PAN was ascribed to the abundant active sites formed by functional groups and oxygen defects for efficient TCH species adsorption and photon capturing, and the tight interface between Mg–Fe LDHs nanoparticles and PAN nanofibers for the rapid separation and transfer of photoinduced e−/h+ pairs. SO4•− and •O2− radicals were vital for the MgFe2/PAN-assisted photo-PMS reaction.

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Section: Introductionmentioning

confidence: 99%

Mg–Fe Layered Double Hydroxides/Polyacrylonitrile Nanofibers for Solar-Light Induced Peroxymonosulfate Elimination of Tetracycline Hydrochloride

Peng,

Ye,

Luo

et al. 2024

Water

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“…Os níveis de energia HOMO e LUMO dos catalisadores WO 3 /TiO 2 podem ser calculados a partir do potencial de oxidação inicial (E 0 Ox (início)) e do potencial de redução inicial (E 0 Red (início)), como um método relatado na literatura [96,97] e representado pelas equações (24), (25) processo fotocatalítico e, nesse contexto, perdas de hidroxilas, acarretam uma diminuição na oxidação do metano na banda de valência. [28,31].…”

Section: Fonte: Autor Da Teseunclassified

“…A fotocatálise, como rota direta, a baixas temperaturas, tem sido um método promissor para aplicações ambientais na eliminação de poluentes orgânicos na água e na atmosfera nos conhecidos como processos de oxidação avançada, POA's [26]. Também é uma rota adotada para a transformação de compostos orgânicos que proporcionam ganhos à comunidade [27,28]. Este é o caso da conversão de metano em combustíveis líquidos, com potencial aplicação menos poluidora e de interesse comercial, sendo um deles o metanol, objeto de estudo nessa presente tese [29,30].…”

Section: Introductionunclassified

“…Estudos para a conversão fotocatalítica, fotocatálise, de metano em metanol, têm sido muito realizados recentemente [28,31,33,34]. Em meio aquoso, muito estudado, proporciona a separação de portadores de cargas, e [36,37].…”

Section: Introductionunclassified

“…Esses radicais hidroxilas podem, inicialmente, realizar reações com o metano e produzir o metil, equação (3), posteriormente produzindo o -), diminuindo, com isso, as reações indesejáveis que consomem metano e metanol, equações(14) e (15) da página 36. Esses elétrons, podem reagir com WO 3 , reduzindo W +6 para W 5+ , conforme mostram as equações (22) e (23)[28,35,42,63,83,84]. tese, proporciona uma borda de banda de condução na condição de menor energia que a banda de condução do TiO 2 .…”

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Conversão de metano em metanol em camada fina de difusão de gás utilizando fotocatalisadores porosos de WO>sub<3>/sub</TiO>sub<2>/sub<

Yovanovich

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Defect Engineering in Nanocatalysts: From Design and Synthesis to Applications

Muhammad,

Zada,

Rashid

et al. 2024

Adv Funct Materials

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Defect engineering is an emerging technology for tailoring nanomaterials' characteristics and catalytic performance in various applications. Recently, defect‐engineered nanoparticles have emerged as highly researched materials in catalytic applications because of their exceptional redox reaction capabilities and physicochemical and optical properties. The properties of nanomaterials can be readily adjusted by controlling the nature and concentration of defects within the nanoparticles, avoiding the need for intricate design strategies. This review investigates defect engineering in nanocatalysts, including the design, fabrication, and applications. Initially, the various categories and strategies of nanomaterial defects and their impacts on the nanocatalysts' electronic and surface properties, catalytic activity, selectivity, and stability are summarized. Then, the catalytic processes and their uses, including gas sensing, hydrogen (H2) evolutions, water splitting, reductions of carbon dioxide (CO2) and nitrogen to value‐aided products, pollutant degradation, and biomedical (oncotherapy, antibacterial and wound healing, and biomolecular sensing) applications are discussed. Finally, the limitations in defect engineering and the prospective paths for allowing the logical design and optimization of nanocatalytic materials for long‐term and efficient applications are also examined. This comprehensive review gives unique insights into the current state of defect engineering in nanocatalysts and inspires future research on exploiting shortcomings to improve and customize catalytic performance.

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Continuous photocatalysis via Z-scheme based nanocatalyst system for environmental remediation of pharmaceutically active compound: Modification, reaction site, defect engineering and challenges on the nanocatalyst

Cited by 20 publications

References 221 publications

Mg–Fe Layered Double Hydroxides/Polyacrylonitrile Nanofibers for Solar-Light Induced Peroxymonosulfate Elimination of Tetracycline Hydrochloride

Mg–Fe Layered Double Hydroxides/Polyacrylonitrile Nanofibers for Solar-Light Induced Peroxymonosulfate Elimination of Tetracycline Hydrochloride

Conversão de metano em metanol em camada fina de difusão de gás utilizando fotocatalisadores porosos de WO>sub<3>/sub</TiO>sub<2>/sub<

Defect Engineering in Nanocatalysts: From Design and Synthesis to Applications

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