Photocatalytic Purification of Orange-II-Dye-Polluted Wastewater Using TiO2-Modified g-C3N4 Composite DOI Creative Commons
Bin Guo, Monir Uzzaman, Mai Furukawa

et al.

C – Journal of Carbon Research, Journal Year: 2024, Volume and Issue: 10(4), P. 103 - 103

Published: Dec. 5, 2024

Textile dyes are considered to be one of the major sources water pollution due their complex chemical structures. Photocatalytic dye degradation is an eco-friendly method that uses light-activated catalysts break down molecules in wastewater into harmless byproducts. In present study, pure and N-doped g-C3N4 were synthesized using one-pot calcination. The fabrication g-C3N4/TiO2 TC-g-C3N4/TiO2 was accomplished by physical mixing. prepared photocatalysts used treat Orange-II-polluted wastewater. structural properties, surface morphology, light-harvesting capability, electrochemical properties assessed XRD, XPS, SEM, TEM, BET, DRS, PL, EIS, Mott–Schottky, transient photocurrent response (TPCR) analyses. improved charge separation migration confirmed TPCR results. TEM XPS data formation a composite. Enhanced photocatalytic decolorization achieved for compared with or TiO2. 1 wt% composite exhibited highest (92.1%) efficiency during 60 min UV irradiation. Furthermore, pseudo-first-order reaction rate constant (k) calculated 0.0213 min−1, which 2.5 times better than obtained bare Finally, understanding process, possible mechanism proposed.

Language: Английский

Photocatalytic hydrocarbon production from aqueous acetic acid using TiO2 with simultaneous photodeposition of Cu DOI Creative Commons
Monir Uzzaman, Mai Furukawa, Ikki Tateishi

et al.

RSC Advances, Journal Year: 2025, Volume and Issue: 15(7), P. 5316 - 5326

Published: Jan. 1, 2025

Photocatalytic techniques are considered clean, sustainable and cost-effective in energy conversion environmental restoration.

Language: Английский

Citations

1
Boosting hydrogen evolution performance of nanofiber membrane-based composite photocatalysts with multifunctional carbon dots DOI

Minfeng Zheng,

Xiaowei Xing,

Y. Zhang

et al.

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 678, P. 417 - 429

Published: Sept. 16, 2024

Language: Английский

Citations

4
Ammonia-Treated Graphene Oxide/ZnIn2S4 Composite for Enhanced Photocatalytic Hydrogen Production under Visible Light Irradiation DOI
Monir Uzzaman, Mst. Farhana Afrin, Mai Furukawa

et al.

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: April 17, 2025

In the pursuit of solar-driven photocatalytic energy generation, environmental remediation, and carbon neutrality, development semiconductor-based heterojunction photocatalysts presents a promising strategy. However, efficiency pristine ZnIn2S4 (ZIS) is hindered by rapid electron-hole recombination relatively small surface area. Meanwhile, pure graphene oxide (GO) not an ideal photocatalyst due to its inappropriate bandgap presence oxygenated functional groups. To overcome these limitations, surfactant-assisted ZIS synthesis was combined with ammonia-treated GO (NGO) form NGO/ZIS composite that enhances light absorption, charge carrier separation transport, overall hydrogen production under visible illumination. Among evaluated materials, 0.1NGO/ZIS exhibited highest evolution rate (18.8 mmol·g-1 h-1), demonstrating enhancements 3-fold 940-fold increased compared (5.8 h-1) NGO (0.02 respectively. This superior performance attributed improved interfacial transfer between ZIS, facilitated incorporation amine amide groups into GO. Furthermore, density theory (DFT) calculations were conducted validate impact ammonia treatment on support experimental findings. The synthesized characterized using X-ray diffraction (XRD), Fourier-transform infrared (FTIR), photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission (TEM), Brunauer-Emmett-Teller (BET), diffuse reflectance sorption (DRS), photoluminescence (PL), electrochemical impedance (EIS), spin resonance (ESR), time-resolved (TRPL) analyses. study simple yet effective approach fabricating composites, contributing advancement high-performance for sustainable applications.

Language: Английский

Citations

0
Photocatalytic Purification of Orange-II-Dye-Polluted Wastewater Using TiO2-Modified g-C3N4 Composite DOI Creative Commons
Bin Guo, Monir Uzzaman, Mai Furukawa

et al.

C – Journal of Carbon Research, Journal Year: 2024, Volume and Issue: 10(4), P. 103 - 103

Published: Dec. 5, 2024

Textile dyes are considered to be one of the major sources water pollution due their complex chemical structures. Photocatalytic dye degradation is an eco-friendly method that uses light-activated catalysts break down molecules in wastewater into harmless byproducts. In present study, pure and N-doped g-C3N4 were synthesized using one-pot calcination. The fabrication g-C3N4/TiO2 TC-g-C3N4/TiO2 was accomplished by physical mixing. prepared photocatalysts used treat Orange-II-polluted wastewater. structural properties, surface morphology, light-harvesting capability, electrochemical properties assessed XRD, XPS, SEM, TEM, BET, DRS, PL, EIS, Mott–Schottky, transient photocurrent response (TPCR) analyses. improved charge separation migration confirmed TPCR results. TEM XPS data formation a composite. Enhanced photocatalytic decolorization achieved for compared with or TiO2. 1 wt% composite exhibited highest (92.1%) efficiency during 60 min UV irradiation. Furthermore, pseudo-first-order reaction rate constant (k) calculated 0.0213 min−1, which 2.5 times better than obtained bare Finally, understanding process, possible mechanism proposed.

Language: Английский

Citations

0