Fuel, Journal Year: 2025, Volume and Issue: 395, P. 135173 - 135173
Published: March 26, 2025
Language: Английский
ACS Applied Energy Materials, Journal Year: 2024, Volume and Issue: 7(11), P. 4891 - 4903
Published: May 21, 2024
Photocatalytic water splitting for hydrogen generation is an appealing means of sustainable solar energy storage. In the past few years, mesoporous semiconductors have been at forefront investigations in low-cost chemical fuel production and conversion technologies. Mesoporosity combined with tunable electronic properties semiconducting nanocrystals offers desired large accessible surface connectivity throughout framework, thus enhancing photocatalytic activity. this work, we present construction rationally designed 3D networks Co2P-modified CdIn2S4 nanoscale crystals (ca. 5–6 nm size) through effective soft-templating synthetic route demonstrate their impressive performance visible-light-irradiated catalytic production. Spectroscopic characterizations electrochemical studies unravel multipathway electron transfer dynamics across interface Co2P/CdIn2S4 Mott–Schottky nanoheterojunctions shed light on impact evolution chemistry. The strong interaction occurring heterointerface can regulate charge transport toward greatly improved performance. hybrid catalyst 10 wt % Co2P content unveils a H2 rate 20.9 mmol gcat–1 h–1 under visible irradiation apparent quantum efficiency (AQE) up to 56.1% 420 nm, which among highest reported activities. understanding interfacial charge-transfer mechanism could provide valuable insights into rational development highly efficient catalysts clean applications.
Language: Английский
Citations
7
Chemistry Africa, Journal Year: 2023, Volume and Issue: 6(3), P. 1127 - 1143
Published: Jan. 6, 2023
Language: Английский
Citations
16
Energies, Journal Year: 2023, Volume and Issue: 16(4), P. 1669 - 1669
Published: Feb. 7, 2023
The research on renewable energy is actively looking into electrocatalysts based transition metal chalcogenides because nanostructured support the higher intrinsic activity for both hydrogen evolution reaction (HER) and oxygen (OER). A major technique facilitating conversion of sustainable electrochemical water splitting. aim review to discuss revelations made when trying alter internal external nanoarchitectures chalcogenides-based enhance their performance. To begin, a general explanation water-splitting given clarify key factors in determining catalytic performance electrocatalysts. delve many ways being employed improve HER’s electrocatalytic performance, fabrication processes utilized generate materials are described. Similarly, OER electrocatalysts, applied complementary techniques strategies involved designing bifunctional (HER OER) explained. As conclusive remark, challenges future perspectives chalcogenide-based context splitting summarized.
Language: Английский
Citations
15
Catalysts, Journal Year: 2023, Volume and Issue: 13(5), P. 893 - 893
Published: May 15, 2023
Mg-doped TiO2 nano-structures in different compositions (1, 2.5 and 5%) were successfully synthesized by low-temperature hydrothermal route. X-ray diffraction electron microscopic studies used to investigate the crystal structure, surface morphology particle size of as-synthesized materials. Raman carried out elucidate phase identification modes vibrations determine impact dopant ion on structures. The band gap was estimated using UV-DRS whereas, BET area analysis revealed an increase increasing Mg2+ ions concentration nanostructures. Among various composition nano-structures, 5% photocatalyst showed maximum hydrogen evolution activity (38.96 mmol gcat−1) 8-hour (h) cycle. Moreover, 2.5% nanocatalyst with tafel slopes 123.5 126.7 mV/dec strong for both HER 0.5N H2SO4 0.1N KOH, onset potential 0.96 V (at 10 mA/cm2) −1.38 1 HER, respectively. Experimental investigations deduced that incorporation resulted generation catalytic titanium dioxide owing synergistic effect provided remarkable presence defects introduced doping.
Language: Английский
Citations
15
Energy Advances, Journal Year: 2023, Volume and Issue: 2(9), P. 1512 - 1520
Published: Jan. 1, 2023
Hot injection induced heterostructured nanocomposite substantially boosts photocatalytic hydrogen evolution performance.
Language: Английский
Citations
15
ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(48), P. 55822 - 55836
Published: Nov. 23, 2023
Defect engineering through modification of their surface linkage is found to be an effective pathway escalate the solar energy conversion efficiency metal-organic frameworks (MOFs). Herein, defect using controlled decarboxylation on NH2-UiO-66 and integration ultrathin NiCo-LDH nanosheets synergizes hydrogen evolution reaction (HER) under a broad visible light regime. Diversified analytical methods including positron annihilation lifetime spectroscopy were employed investigate role Zr3+-rich defects by analyzing characteristics positrons in NH2-UiO-66, which provides deep insight into effects structural electronic properties. The progressively tuned photophysical properties NiCo-LDH@NH2-UiO-66-D-heterostructured nanocatalyst led impressive rate HER (∼2458 μmol h-1 g-1), with apparent quantum yield ∼6.02%. nanosheet structure was highly favored toward electrostatic self-assembly heterostructure for efficient charge separation. Coordination Zr3+ support confirmed X-ray absorption electron paramagnetic resonance techniques. Femtosecond transient studies unveiled photoexcited migration process from MOF favorably occurred picosecond time scale boost catalytic activity composite system. Furthermore, experimental finding are validated density functional theory evaluation free reveals strong binding over infers anchoring effect layered double hydroxide (LDH) vicinity Zr cluster host-guest interaction. This work provided novel photocatalysis via at linker modulation MOFs.
Language: Английский
Citations
14
Next Materials, Journal Year: 2024, Volume and Issue: 7, P. 100368 - 100368
Published: Sept. 9, 2024
Language: Английский
Citations
6
Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(21), P. 12533 - 12544
Published: Jan. 1, 2024
Developing acid-stable oxygen evolution/reduction reaction (OER/ORR) electrocatalysts is essential for high-performance water splitting.
Language: Английский
Citations
5
Micromachines, Journal Year: 2024, Volume and Issue: 15(7), P. 876 - 876
Published: July 3, 2024
Herein, we prepare MoS
Language: Английский
Citations
5
ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(7), P. 6861 - 6872
Published: March 25, 2024
The two-dimensional (2D) cadmium sulfide (CdS)-coupled semiconductor material as an artificial photosynthetic leaf presents a potential catalytic paradigm for solar-to-chemical conversions. This supports the spatial separation of photoexcited electrons and holes, inhibits their recombination, allows water-splitting half-reactions to take place at each individual side. In this research, we examine charge-transfer modulation on CdS- CdS/ZIF-8@NiS-coupled semiconductors prepared by hydrothermal in situ growth ZIF-8/NiS clusters CdS, forming design that enables effective utilization solar photons. proposed photocatalytic system drives very high H2-production rate 62.5 mmolg–1h–1 with apparent quantum efficiency (QE) 17.3% under visible-light irradiation without undesirable photocatalyst degradation. Several control experiments established superior performance were suitable renewable energy conversion applications. density functional theory (DFT) calculation provides insights into response NiS within CdS/ZIF-8 (CZ8) heterostructure, aiming comprehend its exceptional behavior.
Language: Английский
Citations
4