S-scheme N-doped carbon dots anchored g-C3N4/Fe2O3 shell/core composite for photoelectrocatalytic trimethoprim degradation and water splitting

Dang, Van Dien; Thamilselvan, Annadurai; Khedulkar, Akhil Pradiprao; Lin, James T.; Adorna, Joemer; Wang, Yu; Pandit, Bidhan; Huynh, Trung Viet; Doong, Ruey‐an

doi:10.1016/j.apcatb.2022.121928

Cited by 96 publications

(24 citation statements)

References 63 publications

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“…With the rapid development of social industrialization, energy shortage, and environmental deterioration are becoming Being a multi-functional metal-free semiconductor material, graphitic carbon nitride (g-C 3 N 4 ) possesses many outstanding photochemical properties such as high physicochemical stability and proper energy band configuration, as well as simple and environmental friendly fabrication method. [14][15][16][17][18] However, pristine g-C 3 N 4 suffers from defects including low light absorbance, scarce active site, fast photo-generated carrier recombination rate, and sluggish charge separation and transfer efficiency, thereby limiting its photocatalytic activity in HER. [19,20] Exploring strategies for transforming raw g-C 3 N 4 into appropriate photocatalyst in HER is necessary and urgent.…”

Section: Introductionmentioning

confidence: 99%

Tailoring Advanced N‐Defective and S‐Doped g‐C₃N₄ for Photocatalytic H₂ Evolution

Wang

Jiang

et al. 2023

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Although challenges remain, synergistic adjusting various microstructures and photo/electrochemical parameters of graphitic carbon nitride (g‐C3N4) in photocatalytic hydrogen evolution reaction (HER) are the keys to alleviating the energy crisis and environmental pollution. In this work, a novel nitrogen‐defective and sulfur‐doped g‐C3N4 (S‐g‐C3N4‐D) is designed elaborately. Subsequent physical and chemical characterization proved that the developed S‐g‐C3N4‐D not only displays well‐defined 2D lamellar morphology with a large porosity and a high specific surface area but also has an efficient light utilization and carriers‐separation and transfer. Moreover, the calculated optimal Gibbs free energy of adsorbed hydrogen (ΔGH*) for S‐g‐C3N4‐D at the S active sites is close to zero (≈0.24 eV) on the basis of first‐principle density functional theory (DFT). Accordingly, the developed S‐g‐C3N4‐D catalyst shows a high H2 evolution rate of 5651.5 µmol g−1 h−1. Both DFT calculations and experimental results reveal that a memorable defective g‐C3N4/S‐doped g‐C3N4 step‐scheme heterojunction is constructed between S‐doped domains and N‐defective domains in the structural configuration of S‐g‐C3N4‐D. This work exhibits a significant guidance for the design and fabrication of high‐efficiency photocatalysts.

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Section: Introductionmentioning

confidence: 99%

Tailoring Advanced N‐Defective and S‐Doped g‐C₃N₄ for Photocatalytic H₂ Evolution

Wang

Jiang

et al. 2023

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“…6b and d). It implies that changing the voltage window might have an influence on a-MnO 0 the charge transfer resistance (R CT ) is depicted in the high frequency domain as a semicircular arc, the internal resistance (Rs) corresponds to an intersection point in the X-axis [83,84]. The double layer component inside pores and diffusion in the MnO 2 structure are coupled by the constant phase element (CPE) and Warburg resistance (W).…”

Section: Electrochemical Performancementioning

confidence: 99%

Regulated electrochemical performance of manganese oxide cathode for potassium-ion batteries: A combined experimental and first-principles density functional theory (DFT) investigation

Pandit

Rondiya²,

Shaikh³

et al. 2023

Journal of Colloid and Interface Science

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“…CDs are quasi-spherical carbon nanoparticles composed of amorphous carbon with sp 2 hybridization. Based on these novel properties, the sensitization effect of CDs is getting unveiled with various semiconductors like TiO 2 , ZnO, Fe 2 O 3 , and WO 3 to improve their PEC activity. − …”

Section: Introductionmentioning

confidence: 99%

Sulfur/Nitrogen-Codoped Carbon-Dot-Modified WO₃ Nanosheets toward Enhanced Charge-Carrier Separation in a Saline Water-Splitting Reaction

Choubey,

Sharma,

Basu

2023

ACS Appl. Nano Mater.

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Hydrogen (H 2 ) is considered to be a future fuel because of its high energy density and could replace fossil fuels. It can be produced in a greener way by using abundant solar light and saline water and applying a photoelectrochemical (PEC) pathway. To produce green H 2 , WO 3 2D nanosheets are developed, and their performance in saline water splitting is studied under PEC conditions. WO 3 is very efficient in absorbing visible light from solar irradiation; however, it suffers from low charge-transfer rates, which inhibits its PEC performance. To increase the charge transportation ability, WO 3 is sensitized with sulfur/nitrogen-codoped carbon dots (SNCDs). Impedance analysis indicates an enhanced charge transportation ability of the formed heterostructure. The best-obtained heterostructure of WO 3 and SNCDs exhibits nearly 1.62 times more photocurrent density than bare WO 3 . Bare WO 3 nanosheets can produce a photocurrent density of 1.59 mA/cm 2 at 1.39 V vs Ag/AgCl. The best-obtained heterostructure of WO 3 and SNCDs can produce photocurrent density of 2.57 mA/cm 2 at 1.39 V vs Ag/AgCl. A type II staggered heterostructure of WO 3 / SNCDs leads to improved PEC activity. Enhanced carrier density and lowered charge-transfer resistances are observed from Mott− Schottky and PEC impedance analyses, respectively. The carrier density increases nearly 84 times in the heterostructure. The heterostructure exhibits effective photostability under uninterrupted illumination for 2 h.

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S-scheme N-doped carbon dots anchored g-C3N4/Fe2O3 shell/core composite for photoelectrocatalytic trimethoprim degradation and water splitting

Cited by 96 publications

References 63 publications

Tailoring Advanced N‐Defective and S‐Doped g‐C₃N₄ for Photocatalytic H₂ Evolution

Tailoring Advanced N‐Defective and S‐Doped g‐C₃N₄ for Photocatalytic H₂ Evolution

Regulated electrochemical performance of manganese oxide cathode for potassium-ion batteries: A combined experimental and first-principles density functional theory (DFT) investigation

Sulfur/Nitrogen-Codoped Carbon-Dot-Modified WO₃ Nanosheets toward Enhanced Charge-Carrier Separation in a Saline Water-Splitting Reaction

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S-scheme N-doped carbon dots anchored g-C3N4/Fe2O3 shell/core composite for photoelectrocatalytic trimethoprim degradation and water splitting

Cited by 96 publications

References 63 publications

Tailoring Advanced N‐Defective and S‐Doped g‐C3N4 for Photocatalytic H2 Evolution

Tailoring Advanced N‐Defective and S‐Doped g‐C3N4 for Photocatalytic H2 Evolution

Regulated electrochemical performance of manganese oxide cathode for potassium-ion batteries: A combined experimental and first-principles density functional theory (DFT) investigation

Sulfur/Nitrogen-Codoped Carbon-Dot-Modified WO3 Nanosheets toward Enhanced Charge-Carrier Separation in a Saline Water-Splitting Reaction

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Product

Resources

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Tailoring Advanced N‐Defective and S‐Doped g‐C₃N₄ for Photocatalytic H₂ Evolution

Tailoring Advanced N‐Defective and S‐Doped g‐C₃N₄ for Photocatalytic H₂ Evolution

Sulfur/Nitrogen-Codoped Carbon-Dot-Modified WO₃ Nanosheets toward Enhanced Charge-Carrier Separation in a Saline Water-Splitting Reaction