Synthesis of novel heterostructured FeS2/Ag2MoO4 nanocomposite: Characterization, efficient antibacterial and enhanced visible light driven photocatalytic activity

Kokilavani, S.; Syed, Asad; Raju, Lija L.; Al-Rashed, Sarah; Elgorban, Abdallah M.; Thomas, Ajith M.; Khan, S. Sudheer

doi:10.1016/j.surfin.2021.101003

Cited by 32 publications

(9 citation statements)

References 45 publications

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“…Comparatively, the conduction band (CB) position of BTO was more negative, and the valence band (VB) position of BO was more positive. Hence, according to the fact that pure BTO and BO both were p-type conductivity, it can be concluded that the produced BBTO composite was an interleaved type II and p–p heterojunction. ,,− Such energy band arrangement favored the separation of carriers in BBTO and promoted the photocatalytic efficiency. , …”

Section: Resultsmentioning

confidence: 96%

Preparation of Binary Type II α-Bi₂O₃/Bi₁₂TiO₂₀ Cross-Shaped Heterojunction with Enhanced Visible Light Photocatalytic Performance

Wang

Yan

Sun

et al. 2022

ACS Appl. Electron. Mater.

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The binary type II α-Bi 2 O 3 /Bi 12 TiO 20 heterojunction composite was successfully obtained by a simple hydrothermal process. The pH value and the Bi/Ti molar ratio were the key to form the α-Bi 2 O 3 /Bi 12 TiO 20 heterojunction. The α-Bi 2 O 3 nanobelts intertwined with the Bi 12 TiO 20 nanobelts to form a cross-shaped structure in the composite. The obvious red-shift can be detected in Raman spectra. UV−vis DRS also revealed that the effectively reduced band gap of the heterojunction composite led to sunlight absorption in a larger range. Meanwhile, the photocurrent responses and the EIS demonstrated that the combination of Bi 12 TiO 20 and α-Bi 2 O 3 significantly promoted the separation of photogenerated electron−hole pairs and suppressed their recombination, which was also confirmed by PL analysis. Furthermore, photocatalytic degradation experiments proved that the α-Bi 2 O 3 / Bi 12 TiO 20 heterojunction composite had excellent catalytic performance under visible light, whose rate constant value (k) was about 2.0 times that of pure α-Bi 2 O 3 and 4.5 times that of pure Bi 12 TiO 20 samples. A possible photocatalytic mechanism of α-Bi 2 O 3 /Bi 12 TiO 20 was also proposed based on p−p and type II heterojunction. It was concluded that the heterojunction structure markedly promoted the migration and separation of carriers to enhance its photoactivity.

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Section: Resultsmentioning

confidence: 96%

Preparation of Binary Type II α-Bi₂O₃/Bi₁₂TiO₂₀ Cross-Shaped Heterojunction with Enhanced Visible Light Photocatalytic Performance

Wang

Yan

Sun

et al. 2022

ACS Appl. Electron. Mater.

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“…FeS 2 was prepared according to the reported literature [23] . Solution A of 1 M FeSO 4 was dispensed by dissolving 1.39 g of FeSO 4 ⋅ 7H 2 O in 100 mL of deionized water.…”

Section: Methodsmentioning

confidence: 99%

“…FeS 2 was prepared according to the reported literature. [23] Solution A of 1 M FeSO 4 was dispensed by dissolving 1.39 g of FeSO 4 • 7H 2 O in 100 mL of deionized water. Similarly, solution B of 1 M Na 2 S was dispensed by dissolving 1.2 g of Na 2 S • 9H 2 O in 100 mL of deionized water.…”

Section: Preparation Of Fesmentioning

confidence: 99%

Development of PANI/FeS₂/MnO₂ Composite Electrode Materials for High‐Performance Supercapacitors

Li,

Cui

et al. 2024

ChemistrySelect

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Polyaniline (PANI) has unique physical and chemical peculiarities, so it has been widely researched in the field of energy storage. However, its structure is easy to be damaged during charging and discharging, which seriously affects its application. PANI/FeS2/MnO2 composite materials were successfully prepared by an easy combination of chemical precipitation and chemical oxidative polymerization. The electrochemical test results manifested that the specific capacitance of PANI/FeS2/MnO2 4 : 1 : 3 was 580 F/g at 1 A/g, and had great cyclic stability (capacitance retention rate was 85.2 % after 10000 cycles at 5 A/g). It was because that reticular structure shortened the ion transport path. On the other hand, it was able to effectively mitigate the volume change during long‐term charging and discharging, thus improving the cycling stability. In addition, PANI/FeS2/MnO2 4 : 1 : 3 as the positive and activated carbon (AC) as the negative, an asymmetrical supercapacitor was assembled with a maximal energy density of 37.93 Wh/kg when its power density was 0.85 kW/kg. At the same time, the device possessed a long cycle life (the capacitance conservation rate was 82 % after 5000 cycles at 5 A/g). This excellent performance is due to the excellent synergy between the PANI, FeS2 and MnO2. This study opens a new way to investigate polyaniline‐based composite electrode materials.

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“…[47,48] Thus, composites with FeS 2 have been employed for photocatalytic dye degradation, H 2 evolution, CO 2 reduction, and NRR. [49][50][51][52][53][54] Apart from improving the light absorption properties in composites, FeS 2 can act as an efficient electrocatalyst, which has been shown separately for the H 2 evolution, as well as for the NRR. [55][56][57][58][59] There have been also recent reports on the formation of heterojunctions of FeS 2 with CN and their photocatalytic application in organic dye and antibiotics removal.…”

Section: Introductionmentioning

confidence: 99%

Light‐Induced Ammonia Generation over Defective Carbon Nitride Modified with Pyrite

Zander

Timm

Weiß

et al. 2022

Advanced Energy Materials

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Photocatalytic nitrogen fixation under ambient conditions is currently widely explored in an attempt to develop a sustainable alternative for the Haber–Bosch process. In this work, defect‐rich carbon nitride, one of the most investigated photocatalysts reported in literature for ammonia generation, is combined with earth‐abundant and bioinspired FeS2 to improve the activity for ammonia production. By this combination, an activity enhancement of ≈400% compared to unmodified carbon nitride is achieved. The optimal FeS2 loading is established to be 1 wt%, with ammonia yields of up to 800 µg L−1 after irradiation for 7 h. By detailed material characterization of the electronic and material properties of the composites before and after the photocatalytic reaction, it is revealed that NH3 generation occurs not photocatalytically from N2, but via a light‐induced reduction of N–CN groups adjacent to nitrogen vacancies in the structure of defect‐rich carbon nitride. FeS2 acts similar to a cocatalyst, enhancing the ammonia yield by π‐back‐donation from Fe‐centers to the imine nitrogen of the defect‐rich carbon nitride, thereby activating the structure and boosting the ammonia generation from cyano groups.

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Synthesis of novel heterostructured FeS2/Ag2MoO4 nanocomposite: Characterization, efficient antibacterial and enhanced visible light driven photocatalytic activity

Cited by 32 publications

References 45 publications

Preparation of Binary Type II α-Bi₂O₃/Bi₁₂TiO₂₀ Cross-Shaped Heterojunction with Enhanced Visible Light Photocatalytic Performance

Preparation of Binary Type II α-Bi₂O₃/Bi₁₂TiO₂₀ Cross-Shaped Heterojunction with Enhanced Visible Light Photocatalytic Performance

Development of PANI/FeS₂/MnO₂ Composite Electrode Materials for High‐Performance Supercapacitors

Light‐Induced Ammonia Generation over Defective Carbon Nitride Modified with Pyrite

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Synthesis of novel heterostructured FeS2/Ag2MoO4 nanocomposite: Characterization, efficient antibacterial and enhanced visible light driven photocatalytic activity

Cited by 32 publications

References 45 publications

Preparation of Binary Type II α-Bi2O3/Bi12TiO20 Cross-Shaped Heterojunction with Enhanced Visible Light Photocatalytic Performance

Preparation of Binary Type II α-Bi2O3/Bi12TiO20 Cross-Shaped Heterojunction with Enhanced Visible Light Photocatalytic Performance

Development of PANI/FeS2/MnO2 Composite Electrode Materials for High‐Performance Supercapacitors

Light‐Induced Ammonia Generation over Defective Carbon Nitride Modified with Pyrite

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Preparation of Binary Type II α-Bi₂O₃/Bi₁₂TiO₂₀ Cross-Shaped Heterojunction with Enhanced Visible Light Photocatalytic Performance

Preparation of Binary Type II α-Bi₂O₃/Bi₁₂TiO₂₀ Cross-Shaped Heterojunction with Enhanced Visible Light Photocatalytic Performance

Development of PANI/FeS₂/MnO₂ Composite Electrode Materials for High‐Performance Supercapacitors