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Why are bimetallic nanocomposites better at phtocatalytic dye degradation when compared to individual metal oxide nanoparticles?

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Bimetallic nanocomposites exhibit superior photocatalytic dye degradation compared to individual metal oxide nanoparticles due to their synergistic effects . These nanocomposites, such as Fe-Mn bimetallic oxide particles, show enhanced performance in degrading dyes like Rhodamine B by activating peroxymonosulphate. Similarly, bimetallic nanoparticles like CuAg demonstrate higher catalytic efficiency in degrading dyes like rhodamine B and indigo carmine compared to monometallic counterparts. The structural analysis of bimetallic nanocomposites reveals well-deposited metal nanoparticles on porous TiO2, leading to enhanced photocatalytic activity and degradation rates of dyes like methylene blue and methyl green. Additionally, bimetallic nanoparticles loaded in polymer microgels, such as Ag/Co-P(NM), display remarkable catalytic efficiency in degrading organic dyes like methyl orange, even after recycling processes.

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Open access•Journal Article•DOI Photocatalytic Degradation of Organic Dyes Contaminated Aqueous Solution Using Binary CdTiO2 and Ternary NiCdTiO2 Nanocomposites Shakeel A. Khan, Awal Noor, Idrees Matthew Khan, Mian Muhammad, M. Sadiq, Niaz Muhammad - Show less +5 more 26 Dec 2022-Catalysts 2 Citations	Bimetallic nanocomposites exhibit enhanced photocatalytic dye degradation due to synergistic effects, red-shifted absorbance wavelengths, and improved efficiency in degrading organic dyes compared to individual metal oxide nanoparticles.
Open access•Journal Article•DOI Piezocatalytic dye degradation using Bi2O3-ZnO-B2O3 glass-nanocomposites Chirag Porwal, Moolchand Sharma, Rahul Vaish, Vishal S. Chauhan, Samia Ben Ahmed, Wonseop Hwang, Heyong Kwang Benno Park, Tae Hyun Sung, Anuruddh Kumar - Show less +8 more 01 Oct 2022-Journal of materials research and technology 8 Citations	Bimetallic nanocomposites like Bi2O3-ZnO-B2O3 show enhanced piezocatalytic dye degradation due to synergistic effects of multiple metals, improving efficiency in organic pollutant removal compared to individual metal oxide nanoparticles.
Open access•Journal Article•DOI Degradation of Textile Dye by Bimetallic Oxide Activated Peroxymonosulphate Process Hera Rashid, Puthiya Veetil Nidheesh - Show less +1 more 13 Jan 2023-Catalysts	Bimetallic nanocomposites show enhanced photocatalytic dye degradation due to synergistic effects, as seen in Fe-Mn (2:1) system achieving 96% RhB removal compared to individual Fe and Mn oxides.
Open access•Journal Article•DOI Mono- and Bimetallic Nanoparticles for Catalytic Degradation of Hazardous Organic Dyes and Antibacterial Applications Shilpa Molakkalu Padre, S. Kiruthika, Shridhar Mundinamani, Ravikirana, Srivathsava Surabhi, Jong-Ryul Jeong, K.M. Eshwarappa, M.S. Murari, Vignesh Shetty, Mamatha Ballal, Gurumurthy S. C. - Show less +10 more 20 Sep 2022-ACS omega 7 Citations	Bimetallic nanoparticles show enhanced catalytic activity for dye degradation due to synergistic effects between metals, offering improved efficiency compared to individual metal oxide nanoparticles.

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Why titanium oxide is a effective photocatalyst for dye degradation application?4 answersTitanium oxide-based photocatalysts (TOBPs) are effective for dye degradation due to their ability to extend light absorption into the visible spectrum, enhancing photocatalytic activity. Strategies like doping with elements or combining with other compounds reduce TiO2's bandgap, improving visible light absorption and catalytic performance. TiO2/SnO2 nanocomposites show enhanced degradation rates for dyes under UV irradiation, with increasing SnO2 content leading to higher color degradation rates. Additionally, TiO2-RGO composites exhibit superior degradation performance for various dyes, attributed to graphene's electron transport ability and adsorption properties. The phase composition, particle size, and specific surface area of TiO2 samples significantly impact their photocatalytic activity, with TiO2-P25 Degussa and Anatase demonstrating high efficiency in dye degradation.

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Which MOF ternary nanocomposites are most effective at degrading organic pollutants?4 answersMetal organic frameworks-Covalent organic frameworks (MOFs-COFs) nanocomposites have been shown to be effective at degrading organic pollutants. The nanocomposites ZnO/SnO2/rGO, Te@NiS, [email protected]3O4, and Ag2O/NiO/ZnOhave all demonstrated high catalytic performance in the degradation of various organic pollutants. The ZnO/SnO2/rGO nanocomposites showed exceptional photocatalytic effectiveness for the destruction of orange II and reactive red 120 dye. The Te@NiS nanoparticles exhibited excellent dye degradation capacity under sunlight. The [email protected]3O4 nanocomposite demonstrated higher catalytic degradation performance for bisphenol A and rhodamine B. The Ag2O/NiO/ZnO nanocomposites efficiently catalyzed the reduction of various nitrophenols, dyes, and their mixtures. These findings suggest that MOF ternary nanocomposites have the potential to be effective catalysts for the degradation of organic pollutants.

How does the MOF nano composition affect the photocatalytic degradation of organic pollutants?4 answersThe composition of MOF nanostructures has a significant impact on the photocatalytic degradation of organic pollutants. The use of melem oligomer nanosheets (MO-NS) as a photocatalyst showed enhanced activity compared to conventional bulk g-C3N4 due to the presence of "defects" and improved surface area. The combination of MOF-5 with Bi2WO6 resulted in a core-shell structure, leading to improved degradation activity and increased contact between active sites and dye molecules. The synthesis of Ho2O3/CNT nanocomposites through a MOF-assisted route exhibited excellent photocatalytic behavior, with enhanced crystallinity, wide UV-light absorption, and improved oxygen deficiency. Metal-organic frameworks (MOFs) have been widely studied for their photocatalytic applications, and different synthesis methods and design strategies have been explored to achieve efficient degradation of organic pollutants. Polyoxometalates (POMs) have also shown promise as photocatalysts for the degradation of organic pollutants, thanks to their unique photo/electric properties.

What is the Corrosion properties effective factors of metal nanocomposites?5 answersMetal nanocomposites have been found to possess enhanced corrosion resistance properties. The factors that affect the corrosion properties of metal nanocomposites include the type of corrosion inhibitor used, the sintering parameters such as temperature and time, and the volume fraction of nanoparticles in the composite. Metal-carbon nanocomposites have been investigated as additives to enhance the protective effect of corrosion inhibitors. The presence of nano size iron aluminate (FeAl2O4) phase in Fe-Al2O3 nanocomposites improves their corrosion resistance. The corrosion resistance of SiCp/Al metal matrix composites (MMCs) is slightly affected by the volume fraction of SiC nanoparticles due to nanoparticle agglomeration and galvanic corrosion between SiC and Al. Overall, the choice of corrosion inhibitor, sintering parameters, and volume fraction of nanoparticles play a significant role in determining the corrosion properties of metal nanocomposites.

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