A novel ternary Fe(III)-SrTiO3-GO nanocomposite for LED-light-driven photocatalytic degradation of norfloxacin antibiotic: Performance, mineralization ability, degradation pathway, and mechanistic insight

Passi, Manjusha; Pal, Bonamali

doi:10.1016/j.cej.2023.147685

Cited by 13 publications

(3 citation statements)

References 71 publications

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“…These images illustrate the proper formation of the intended composite material, showing close connections between its components. The high-resolution image in Figure C,D exhibits continuous and well-resolved lattice fringes observed in the pure SrTiO 3 image exhibit an interplanar spacing of d = 0.23 nm, precisely corresponding to the (110) plane of SrTiO 3 which shows a highly crystalline nature . From Figure B, it is evident that average particle size of the SrTiO 3 is about 85 nm and the SAED pattern (Figure D) shows single diffractional bright spots which indicates highly crystalline nature reinforces the results from the XRD results.…”

Section: Results and Discussionsupporting

confidence: 75%

Yeast Reduced Ti³⁺ Self-Doped SrTiO₃/rGO-In-Ni₂P Nanocomposite for Efficient Visible Light-Driven Hydrogen Generation

Suresh,

Meera,

Anil

et al. 2024

ACS Appl. Nano Mater.

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SrTiO 3 is a promising candidate for photocatalysis because of its tunable band structure and extreme stability. By suitably formulating nanocomposites of SrTiO 3 with other materials, it can introduce defects into the crystal lattice and thereby alter its electronic structure favorably for the desired catalytic applications. In this study, a ternary composite in the form of a coating comprising of SrTiO 3 nanocubes on yeast-reduced graphene oxide (yrGO) and Ni 2 P is developed for the generation of hydrogen by visible light-driven water splitting. The in situ tuning on the electronic state of SrTiO 3 nanocubes by a self-doping effect from the controlled and simultaneous occurrence of Ti 3+ species and oxygen vacancies via the Ti−C bond formation is achieved in the presence of a yeast-assisted reduction of GO in the SrTiO 3 /yrGO nanocomposite. Consequently, SrTiO 3 forms epitaxially self-assembled SrTiO 3 nanocubes on the surface of yrGO as a distinctive bush-like structure, which is further integrated with Ni 2 P matrix resulting in a hierarchical architecture consisting of SrTiO 3 /yrGO microflowers on the spherical Ni 2 P beds. This harmonious integration of SrTiO 3 /yrGO on Ni 2 P enriches the catalytically active sites facilitated by yrGO together with a straddling band gap alignment in the heterojunction for the efficient separation of the electron−hole pairs. The SrTiO 3 /yrGO-Ni 2 P composite coating heterojunction exhibits an outstanding performance toward solar light-driven water splitting and produces 13.25 mmol/g/h of hydrogen with an AQE value of 36.26% under 1 h irradiation after a successful compositional tuning on the coating surface.

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Section: Results and Discussionsupporting

confidence: 75%

Yeast Reduced Ti³⁺ Self-Doped SrTiO₃/rGO-In-Ni₂P Nanocomposite for Efficient Visible Light-Driven Hydrogen Generation

Suresh,

Meera,

Anil

et al. 2024

ACS Appl. Nano Mater.

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“…It is already established that the norfloxacin antibiotic is photocatalytically degraded by the oxidation process in an aqueous medium. − The free radicals and holes trapping tests provide more insight into the photocatalytic mechanism of norfloxacin degradation in aqueous solution using RGO–SnSe catalysts. The role of different oxidative species was studied by using 2-propanol (OH · scavenger), EDTA-Na 2 (h + , hole scavenger), and purging N 2 gas (O 2 –· scavenger). − The temporal photodegradation and degradation efficiency of RGO–SnSe composite for different scavengers are graphically represented in Figure S6A,B in SI, respectively.…”

Section: Resultsmentioning

confidence: 99%

Reduced Graphene Oxide–SnSe Nanocomposite Photocatalyst with High Apparent Quantum Yield for the Photodegradation of Norfloxacin

Kar,

Pal,

Ghosh

2024

ACS Appl. Nano Mater.

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A visible-light-responsive photocatalyst, comprising reduced graphene oxide (RGO) modified tin selenide (SnSe), was fabricated via a cost-effective, one-pot, easy-to-achieve, single-step solvothermal method. The Brunauer−Emmett−Teller analysis shows SnSe with a specific surface area of about 0.3 m 2 g −1 , while RGO−SnSe significantly increases it to 8.44 m 2 g −1 . The photocatalytic kinetics of the RGO−SnSe composite revealed a pseudo-first-order reaction mechanism during the degradation of norfloxacin antibiotics in an aqueous environment. Results indicated that an increase in RGO content in the composites led to enhanced degradation efficiency and apparent quantum yield, reaching maximum values of 90.7 and 11.37%, respectively, at a specific RGO loading of 37 wt %. These values were found to be 3.6 times higher than pure SnSe. However, further augmentation of RGO resulted in a decline in both efficiency and yield. The enhanced catalytic performance can be attributed to the improved synergy between RGO and SnSe. The electrical energy per order was calculated to assess the energy efficiency of the photocatalytic degradation process, yielding a low value of 6.7 kW h m −3 /order for the RGO−SnSe composite with a loading of 0.75 mg/L RGO−SnSe catalyst. The photocatalytic activity of the composite remained nearly unchanged for at least four repeated cycles without any degradation of the catalyst. This outcome underscores the efficacy of the RGO−SnSe composite as an efficient and sustainable technique for antibiotic degradation with a high apparent quantum yield and low energy consumption.

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“…Among these methods, photocatalysis is a powerful technique for environmental detoxification and has emerged as a promising solution due to its cost-effectiveness and environmental friendliness [12,13]. Various metal oxides, such as TiO 2 [14], ZnO [15], CuO [16], WO 3 [17], Fe 2 O 3 [18], and SrTiO 3 [19], are known for their ability to efficiently photocatalyze organic compounds and effectively inactivate bacteria via photocatalytic chemical reactions. Zinc oxide (ZnO), a group II-VI semiconductor material, is often considered one of the most promising photocatalytic agents due to its nontoxic nature and physical stability [20].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Fe-doped ZnO/biochar nanocomposites for acid orange 7 photodegradation and antibacterial activity under visible light region

Nhu,

Nguyet,

Bich

et al. 2024

Mater. Res. Express

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In the present study, different molar ratios of Fe-doped ZnO/biochar (FZBC) were synthesized using a coprecipitation method. ZnO nanoparticles with a size of approximately 30 nm were well dispersed on the biochar matrix. The bandgap energy decreases from 3.11 to 3.08 eV as the Fe-ion concentration increases from 1 to 7 mol%. Photocatalytic studies demonstrated that FZBC exhibited photodegradation toward acid orange 7 (AO7). FZBC exhibited a photodegradation efficiency of AO7 at a concentration of 10 mg. L-1 (93.17%), which was nine times greater than that of pure ZnO (10.30%). Furthermore, the FZBC materials also demonstrated effective inactivation of E. coli, with an antibacterial rate reaching 98%. Overall, these materials are expected to be cost-effective and suitable for photocatalytic degradation and antibacterial activities.

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A novel ternary Fe(III)-SrTiO3-GO nanocomposite for LED-light-driven photocatalytic degradation of norfloxacin antibiotic: Performance, mineralization ability, degradation pathway, and mechanistic insight

Cited by 13 publications

References 71 publications

Yeast Reduced Ti³⁺ Self-Doped SrTiO₃/rGO-In-Ni₂P Nanocomposite for Efficient Visible Light-Driven Hydrogen Generation

Yeast Reduced Ti³⁺ Self-Doped SrTiO₃/rGO-In-Ni₂P Nanocomposite for Efficient Visible Light-Driven Hydrogen Generation

Reduced Graphene Oxide–SnSe Nanocomposite Photocatalyst with High Apparent Quantum Yield for the Photodegradation of Norfloxacin

Synthesis of Fe-doped ZnO/biochar nanocomposites for acid orange 7 photodegradation and antibacterial activity under visible light region

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A novel ternary Fe(III)-SrTiO3-GO nanocomposite for LED-light-driven photocatalytic degradation of norfloxacin antibiotic: Performance, mineralization ability, degradation pathway, and mechanistic insight

Cited by 13 publications

References 71 publications

Yeast Reduced Ti3+ Self-Doped SrTiO3/rGO-In-Ni2P Nanocomposite for Efficient Visible Light-Driven Hydrogen Generation

Yeast Reduced Ti3+ Self-Doped SrTiO3/rGO-In-Ni2P Nanocomposite for Efficient Visible Light-Driven Hydrogen Generation

Reduced Graphene Oxide–SnSe Nanocomposite Photocatalyst with High Apparent Quantum Yield for the Photodegradation of Norfloxacin

Synthesis of Fe-doped ZnO/biochar nanocomposites for acid orange 7 photodegradation and antibacterial activity under visible light region

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Yeast Reduced Ti³⁺ Self-Doped SrTiO₃/rGO-In-Ni₂P Nanocomposite for Efficient Visible Light-Driven Hydrogen Generation

Yeast Reduced Ti³⁺ Self-Doped SrTiO₃/rGO-In-Ni₂P Nanocomposite for Efficient Visible Light-Driven Hydrogen Generation