Synergistic effect of surface plasmon resonance, Ti3+ and oxygen vacancy defects on Ag/MoS2/TiO2-x ternary heterojunctions with enhancing photothermal catalysis for low-temperature wastewater degradation

Zhao, Tianyu; Xing, Zipeng; Xiu, Ziyuan; Li, Zhenzi; Peng, Chen; Zhu, Qi; Zhou, Wei

doi:10.1016/j.jhazmat.2018.09.097

Cited by 98 publications

(18 citation statements)

References 46 publications

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“…Most of this research about the photo-Fenton reaction for organic pollutants is mainly focused on UV and visible light; however, 54% of the solar spectrum is near-infrared (NIR) light, which is rarely utilized [7]. Generally, common materials with photothermal effects include noble metals, organic compounds, carbon-based materials, aluminum nanoparticles, metallic oxide, and metal sulfide [8]. The photothermal conversion performance of materials can be improved by covalently linking the electron-donor, extending the molecular conjugation length and electron-acceptor fragments, and inhibiting the radiative transition process [6].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Magnetic Ferrocene-Containing Polymer with Photothermal Effects for Rapid Degradation of Methylene Blue

et al. 2021

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Photothermal materials are attracting more and more attention. In this research, we synthesized a ferrocene-containing polymer with magnetism and photothermal properties. The resulting polymer was characterized by Fourier-transform infrared (FT-IR), vibrating sample magnetometer (VSM), scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and thermogravimetric analysis (TGA). Its photo-thermocatalytic activity was investigated by choosing methylene blue (MB) as a model compound. The degradation percent of MB under an irradiated 808 nm laser reaches 99.5% within 15 min, and the degradation rate is 0.5517 min−1, which is 145 times more than that of room temperature degradation. Under irradiation with simulated sunlight, the degradation rate is 0.0092 min−1, which is approximately 2.5 times more than that of room temperature degradation. The present study may open up a feasible route to degrade organic pollutants.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Magnetic Ferrocene-Containing Polymer with Photothermal Effects for Rapid Degradation of Methylene Blue

et al. 2021

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“…Clearer high-resolution TEM observation images (Figures 3d and S4b−f) revealed wellresolved lattice fringes with an interlayer separation of 0.24 nm, corresponding to the (111) plane of metallic Ag. 50 It can also be found that 2−4 layer graphene shells with crystalline stripes of 0.34 nm were sometimes coated on metallic Ag grains. Ultra-thin carbon shells on Ag nanoparticles were helpful for the Ag stability improvement in electrocatalysis and facilitated the electron transfer between the carbon substrate and Ag nanoparticles.…”

Section: Resultsmentioning

confidence: 99%

Efficient Nitrate Reduction over Novel Covalent Ag-Salophen Polymer-Derived “Vein-Leaf-Apple”-like Ag@Carbon Structures

Liu

Cheng

Jiang

et al. 2020

ACS Appl. Mater. Interfaces

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Efficient electrocatalysts for nitrate reduction reaction (NO 3 − -RR) that could selectively transfer nitrate into harmless nitrogen are required for water-denitrification treatment. The most widely used electrodes for NO 3 − -RR including noble metals, transition metals, and their alloys still face many challenges such as lower selectivity and efficiency, high cost, and easy corrosion properties. Metallic Ag with acceptable cost possesses strong corrosion resistance in electrolysis, but its activity is often incompetent for NO 3 − -RR. In this work, Ag nanoparticles with a lower loading content (1.99 wt %) on a nitrogen-doped carbon support was successfully used as the robust electrocatalyst for NO 3 − -RR in a Cl − -free neutral solution. This Ag@carbon catalyst exhibited an impressive electrochemical performance for NO 3 − -RR, with a NO 3 − −N conversion yield of 53% and a N 2 −N selectivity of 97% at a low electrolysis overpotential (−0.29 V vs RHE). In particular, the prepared Ag@carbon showed better stability and no secondary Ag ion pollution in electrolysis. Its impressive electrocatalytic performance was attributed to the unique "vein-leaf-apple"like Ag@carbon structures, prepared by thermal conversion of Ag-salophen polymers@CNTs. CNTs served as veins to enhance the electron transportation in electrocatalysts. Salophen polymer-derived mesoporous N-doped carbon plates acted as leaves to concentrate NO 3 − from the electrolyte. Like apples on trees, Ag nanoparticles of about 10−20 nm highly dispersed on carbons selectively converted NO 3 − −N into N 2 −N. It opens up a cost-acceptable and corrosion-resistant Ag-less electrocatalytic pathway for NO 3 − -RR, and the special "vein-leaf-apple"-like Ag@carbon structure could enhance the electrolytic efficiency and N 2 −N selectivity for NO 3 − -RR.

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“…With simultaneous light irradiation and the addition of H 2 O 2 , the degradation rate of MB reached 97.3% within 30 min. Under visible-light irradiation, the electrons (e – ) and holes (h + ) above the bandgap of MAFCC-Alg/Ca-Fe@PDA are transferred to the band edges, and the extra energy is converted from chemical energy to heat energy through a thermalization process . This probably resulted in the electrons having more energy and moving faster through the MAFCC-Alg/Ca-Fe@PDA, contributing to the increase in the rate of catalytic degradation of MB.…”

Section: Resultsmentioning

confidence: 99%

Fe³⁺-Bridged Cellulose–Alginate Composite Gel Beads as Stable and Effective Photo-Fenton Catalysts

Wang

Fan

Zhang

et al. 2021

ACS Appl. Polym. Mater.

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Cellulose pretreated by mechanical activation in the presence of FeCl3 (MAFCC) was dissolved and regenerated as a reinforcing phase for preparing a Fe3+-bridged cellulose–alginate (Alg) composite, which was formed into gel beads and subjected to ion exchange, followed by modification with polydopamine (PDA) to yield a photo-Fenton catalyst, denoted as MAFCC-Alg/Ca-Fe@PDA. Comparative characterization and studies of the catalytic degradation of methylene blue (MB) revealed that the MAFCC-Alg/Ca-Fe@PDA gel beads had outstanding mechanical properties and photo-Fenton catalytic activity, degrading 98.5% of MB in 40 min under optimized conditions. In particular, the formation of the Fe3+-bridged MAFCC-Alg gel network structure, as well as the PDA coating, contributed to the high specific surface area, compressive strength, and visible-light absorption capacity of the MAFCC-Alg/Ca-Fe@PDA porous gel beads. Moreover, MAFCC-Alg/Ca-Fe@PDA exhibited outstanding reusability and stability over five cycles without any significant decrease in catalytic activity or rupture of the gel beads. In summary, an effective synthetic route was provided to prepare a FeAlg composite catalyst having a stable structure and excellent catalytic performance and reusability.

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Synergistic effect of surface plasmon resonance, Ti3+ and oxygen vacancy defects on Ag/MoS2/TiO2-x ternary heterojunctions with enhancing photothermal catalysis for low-temperature wastewater degradation

Cited by 98 publications

References 46 publications

Synthesis of Magnetic Ferrocene-Containing Polymer with Photothermal Effects for Rapid Degradation of Methylene Blue

Synthesis of Magnetic Ferrocene-Containing Polymer with Photothermal Effects for Rapid Degradation of Methylene Blue

Efficient Nitrate Reduction over Novel Covalent Ag-Salophen Polymer-Derived “Vein-Leaf-Apple”-like Ag@Carbon Structures

Fe³⁺-Bridged Cellulose–Alginate Composite Gel Beads as Stable and Effective Photo-Fenton Catalysts

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Synergistic effect of surface plasmon resonance, Ti3+ and oxygen vacancy defects on Ag/MoS2/TiO2-x ternary heterojunctions with enhancing photothermal catalysis for low-temperature wastewater degradation

Cited by 98 publications

References 46 publications

Synthesis of Magnetic Ferrocene-Containing Polymer with Photothermal Effects for Rapid Degradation of Methylene Blue

Synthesis of Magnetic Ferrocene-Containing Polymer with Photothermal Effects for Rapid Degradation of Methylene Blue

Efficient Nitrate Reduction over Novel Covalent Ag-Salophen Polymer-Derived “Vein-Leaf-Apple”-like Ag@Carbon Structures

Fe3+-Bridged Cellulose–Alginate Composite Gel Beads as Stable and Effective Photo-Fenton Catalysts

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Product

Resources

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Fe³⁺-Bridged Cellulose–Alginate Composite Gel Beads as Stable and Effective Photo-Fenton Catalysts