Rodlike AgI/Ag2Mo2O7 Heterojunctions with Enhanced Visible-Light-Driven Photocatalytic Activity

Jiao, Zhongyi; Liu, Zhendong; Ma, Zhen

doi:10.1021/acsomega.9b00806

Cited by 42 publications

(5 citation statements)

References 67 publications

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“…From this result, it is concluded that the possible time required for the deprivation of rhodamine B (RhB) dye was 80 min for the prepared solution. This is related to the previous reported literature 26 , 27 . From the relatively few findings on the visible light photocatalytic performance of SnO 2 , the synthesized sample of SnO 2 exhibits improved results in the destruction of RhB.…”

Section: Resultssupporting

confidence: 90%

Phytosynthesis and characterization of tin-oxide nanoparticles (SnO2-NPs) from Croton macrostachyus leaf extract and its application under visible light photocatalytic activities

Tasisa,

Sarma,

Sahu

et al. 2024

Sci Rep

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Nanotechnology is rapidly becoming more and more important in today's technological world as the need for industry increases with human well-being. In this study, we synthesized SnO2 nanoparticles (NPs) using an environmentally friendly method or green method from Croton macrostachyus leaf extract, leading to the transformation of UV absorbance to visible absorbance by reducing the band gap energy. The products underwent UV, FTIR, XRD, SEM, EDX, XPS, BET, and DLS for characterization. Characterization via UV–Vis spectroscopy confirmed the shift in absorbance towards the visible spectrum, indicating the potential for enhanced photocatalytic activity under visible light irradiation. The energy band gap for as-synthesized nanoparticles was 3.03 eV, 2.71 eV, 2.61 eV, and 2.41 eV for the 1:1, 1:2, 1:3, and 1:4 sample ratios, respectively. The average crystal size of 32.18 nm and very fine flakes with tiny agglomerate structures of nanoparticles was obtained. The photocatalytic activity of the green-synthesized SnO2 nanoparticles was explored under visible light irradiation for the degradation of rhodamine B (RhB) and methylene blue (MB), which were widespread fabric pollutants. It was finally confirmed that the prepared NPs were actively used for photocatalytic degradation. Our results suggest the promising application of these green-synthesized SnO2 NPs as efficient photocatalysts for environmental remediation with low energy consumption compared to other light-driven processes. The radical scavenging experiment proved that hydroxyl radicals (_OH) are the predominant species in the reaction kinetics of both pollutant dyes under visible light degradation.

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Section: Resultssupporting

confidence: 90%

Phytosynthesis and characterization of tin-oxide nanoparticles (SnO2-NPs) from Croton macrostachyus leaf extract and its application under visible light photocatalytic activities

Tasisa,

Sarma,

Sahu

et al. 2024

Sci Rep

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“…AgX absorbs visible light photons to generate electron-hole pairs, which in turn generate highly reactive free radicals which non-selectively, degrade organic pollutants (Rehan et al 2018). Since the pioneering work of Huang et al (2008), silver-halide-based plasmonic photocatalysts (denoted Ag/AgX; X = Cl, Br) have attracted extensive interest from researchers owing to their superior photocatalytic performance for degradation of organic contaminants (Wang et al 2008;Jiao et al 2019;Wang et al 2009;Zhu et al 2015) and inactivation of bacteria (Tian et al 2014;Hu et al 2010). Regarding the influence of different halogen ions on the photocatalytic activity of Ag/ AgX, Huang et al found that Ag@AgBr exhibited higher activity than Ag@AgCl for degradation of methyl orange (Wang et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic degradation of 2,4-dichlorophenol using nanomaterials silver halide catalysts

Moja,

Mapossa,

Chirwa

et al. 2024

Environ Sci Pollut Res

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In this study, the photocatalytic activity of nanomaterials Ag/AgX (X = Cl, Br, I) is reported. Highly efficient silver halide (Ag/AgX where X = Cl, Br, I) photocatalysts were synthesized through a hydrothermal method. The samples were characterized using a range of techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), and Brunauer–Emmett–Teller (BET) to check their structural, morphology, textural and optical properties. In addition, the photocatalytic activity of photocatalysts was evaluated through the degradation of 2,4-dichlorophenol (2,4-DCP) under UV and visible light irradiation. XRD analysis confirmed the presence of a single-phase structure (pure phase) in the synthesized photocatalysts. SEM micrographs showed agglomeration with a non-uniform distribution of particles, which is a characteristic of surfactant-free precipitation reactions in aqueous media. The Ag/AgBr photocatalyst exhibited the best degradation efficiency, resulting in 83.37% and 89.39% photodegradation after 5 h of UV and visible light irradiation, respectively. The effect of catalyst loading, initial solution pH, and 2,4-DCP concentration was investigated for the best-performing Ag/AgBr photocatalyst. The degradation kinetics were best described by the pseudo-first-order Langmuir–Hinshelwood model. The photocatalytic capacity of Ag/AgBr decreased by 50% after five reuse cycles. SEM images revealed heightened levels of photodegradation on the catalyst surface. The study proved the feasibility of using simple synthesis methods to produce visible light active photocatalysts capable of degrading refractory phenolic pollutants in aqueous systems.

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“…Such methods allow the catalyst to enhance the e cacy of the photocatalyst in the presence of visible light and extend the lifetime of the photoinduced charge carriers [25]. For instance, composite photocatalysts such as AgI/Ag 3 PO 4 [26], AgI-WO 3 [27], AgI/BiOI [28], AgI/BiOCl [29], AgI/g-C 3 N 4 [30], AgI/Zn3V2O8 [31], AgI/Ag 2 Mo 2 O 7 [32] have shown superior photocatalytic activity against for contaminant removal from waste water. and has been successful in pollutant degradation [33].…”

Section: Introductionmentioning

confidence: 99%

A Novel Z-Scheme Ni3V2O8/AgI Visible Light Photocatalyst with Enhanced Photocatalytic Activity

Arumugam

Bavani

Preeyanghaa

et al. 2023

Preprint

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The newly developed Z-Scheme Ni3V2O8/AgI visible light photocatalytic heterojunction composite system was fabricated using wet chemical technique with different weight percentages 10, 20, and 30% of Ni3V2O8 for the destruction of (RhB) Rhodamine-B. The purely isolated photocatalyst was further investigated through XRD, UV-vis DRS, TEM, FT-IR, PL, SEM, HRTEM, EDS, and photocurrent measurements. The Ni3V2O8/AgI nanocomposite degraded 82% of RhB with a higher reaction rate coefficient value of 0.0603 min–1 than the other synthesized photocatalysts. The results showed that Z-Scheme heterojunction formation has improved the partition and migration of charged particles leading to intensification in photocatalytic activity when compared to individual photocatalysts. The optimized 20% of Ni3V2O8 nanocomposite was reused three times without any change in photocatalytic performance, which confirmed the stability of the optimized nanocomposite photocatalyst Ni3V2O8/AgI. The outcomes of the radical trapping experiments suggested that radicals •OH and O2•− play a part in RhB degradation. Based on this, a visible light photocatalytic heterogeneous Z-Scheme mechanism is proposed. As a result, the newly fabricated Z-Scheme heterojunction Ni3V2O8/AgI photocatalyst could be a robust material for treating RhB water.

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Rodlike AgI/Ag₂Mo₂O₇ Heterojunctions with Enhanced Visible-Light-Driven Photocatalytic Activity

Cited by 42 publications

References 67 publications

Phytosynthesis and characterization of tin-oxide nanoparticles (SnO2-NPs) from Croton macrostachyus leaf extract and its application under visible light photocatalytic activities

Phytosynthesis and characterization of tin-oxide nanoparticles (SnO2-NPs) from Croton macrostachyus leaf extract and its application under visible light photocatalytic activities

Photocatalytic degradation of 2,4-dichlorophenol using nanomaterials silver halide catalysts

A Novel Z-Scheme Ni3V2O8/AgI Visible Light Photocatalyst with Enhanced Photocatalytic Activity

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