Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: unknown, P. 115197 - 115197
Published: Dec. 1, 2024
Language: Английский
Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: unknown, P. 115197 - 115197
Published: Dec. 1, 2024
Language: Английский
Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 5, 2025
Hydrogen peroxide (H2O2) artificial photosynthesis converts low-density solar energy into storable clean chemical energy, which is an important hot topic in green chemistry. Constructing heterojunctions effective tactic to enhance the oxygen reduction kinetics of H2O2 photosynthesis, however, actual source activity remains ambiguous. Here, a series BiVO4@ZnIn2S4 hierarchical (BZ-x, x = 0.4, 0.8, 1.2) were elegantly designed through piecing two-dimensional (2D) BiVO4 nanosheets onto surface three-dimensional (3D) ZnIn2S4 flower-like microspheres by straightforward ethanol ultrasound-induced self-assembly strategy. These BZ-x photocatalysts exhibit significantly enhanced photocatalytic production rates across wide pH range (3–13) compared with those pristine and ZnIn2S4, optimal BZ-0.8 showing excellent rate as high 1585.99 μmol g–1 h–1. Comprehensive analysis reveals that 2D 3D form Z-scheme heterojunction, can deliver favorable coupling between photogenerated electrons adsorption O2 at interface heterojunctions, thereby accelerating two-step one-electron kinetic process. This study provides new perspective for improving introducing heterojunction strategies.
Language: Английский
Citations
2Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 13, 2025
Abstract Developing conductor‐mediated S‐scheme heterojunction photocatalysts imitating natural photosynthetic systems emerges as a promising approach to hydrogen peroxide (H 2 O ) production. However, achieving precise coupling between two semiconductors with charge shuttle and modulating the interfacial interactions still remain significant bottleneck. Herein, we propose catalyst architecture Cd single atom mediated formed by interfacing CdS TiO nanoparticles. This exhibits an H production rate high 60.33 µmol g −1 min under UV–vis light irradiation, which is attributed efficient transport at interface of thanks S‐scheme. In‐situ X‐ray photoelectron spectroscopy (XPS) electron spin resonance (ESR) spin‐trapping tests confirm transfer route. Femtosecond transient absorption (fs‐TA) other ex‐situ characterizations further corroborate across interface. work offers new perspective on constructing atoms heterojunctions enhance photocatalytic performance.
Language: Английский
Citations
2Separation and Purification Technology, Journal Year: 2024, Volume and Issue: unknown, P. 129713 - 129713
Published: Sept. 1, 2024
Language: Английский
Citations
10Journal of Energy Chemistry, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 1, 2025
Language: Английский
Citations
1Applied Surface Science, Journal Year: 2025, Volume and Issue: unknown, P. 163017 - 163017
Published: March 1, 2025
Language: Английский
Citations
1Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 354, P. 129220 - 129220
Published: Aug. 14, 2024
Language: Английский
Citations
5Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 14, 2024
Abstract The photocatalytic oxygen reduction reaction (ORR) is a key pathway for producing hydrogen peroxide (H 2 O ). While most previous studies have focused on the two‐step 2e − ORR process, one‐step two‐electron route offers thermodynamic and kinetic advantages that can significantly enhance activity selectivity. In this study, photocatalyst design reported by incorporating cadmium into vacancy‐rich Zn 3 S 6 (Cd‐S V /ZIS). This catalyst enables H production via process without use of sacrificial agents, achieving high yield 39.42 µmol g −1 min under UV–vis light irradiation, outperforming ZIS‐based photocatalysts. Theoretical simulations experimental results demonstrate Cd doping improves carrier kinetics catalyst, broadens its absorption range, promotes Yeager adsorption configuration , leading to highly active selective generation. study provides insights efficient photocatalysts production.
Language: Английский
Citations
5ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(21), P. 16245 - 16255
Published: Oct. 19, 2024
The limitations imposed by the high carrier recombination rate in current photocatalytic H2O2 production system substantially restrict of generation. Herein, we successfully prepared an In2S3/HTCC dense heterojunction bridged In–S–C bonds through situ polymerization glucose on In2S3. This interfacial bond provides a fast transfer channel for electrons at interface to achieve highly efficient charge efficiency, leading formation enhanced built-in electric field between In2S3 and HTCC, thus dramatically accelerating separation effectively prolonging lifetime photogenerated carriers. Moreover, coverage HTCC enhances absorption visible light sorption O2 In2S3, while lowering its two-electron oxygen reduction reaction (ORR) energy barrier. Notably, our research demonstrates that can generate not only well-known two-step one-electron ORR but also via alternative pathway utilizing 1O2 as intermediate, thereby enhancing production. Benefiting from these advantages, In2S3/HTCC-2 produce up 1392 μmol g–1 h–1 pure aqueous system, which is 18.2 5.2 times higher than respectively. Our work novel synthesis method new organic/inorganic photocatalysts based offers insights into potential mechanism bonding heterostructures regulate activity.
Language: Английский
Citations
5Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 6, 2025
The essential nature of the photocatalytic process is charge transfer. To optimize spatial separation photogenerated electron–hole (e–-h+) pairs for high-performance catalytic efficiency, in this work, we have successfully prepared hierarchical core–shell two-dimensional (2D)/2D ZnIn2S4@TpBpy (ZIS@TpBpy) with well-matched Z-scheme interfacial transfer channels uranium (U(VI)) photoreduction. electron configuration was confirmed by internal electric field (IEF) formation analysis, XPS characterization, and DMPO spin-trapping EPR spectroscopy. With large specific surface area abundant active sites, ZIS@TpBpy composite achieved a U(VI) extraction rate 94.08%. In addition, removal constant (0.0137 min–1) 2.05 4.28 times higher than those TpBpy (0.0067 ZnIn2S4 (0.0032 min–1), respectively. First, combination organic inorganic components expanded range visible light absorption utilization. Afterward, under visible-light irradiation, more e–-h+ dissociated migrated to driven IEF heterostructure. Simultaneously, synergistic effect between polarization potential generated sites (N O atoms) framework further accelerated depletion translocation pairs, which significantly improved efficiency reduction U(VI).
Language: Английский
Citations
0Applied Surface Science, Journal Year: 2025, Volume and Issue: unknown, P. 162656 - 162656
Published: Feb. 1, 2025
Language: Английский
Citations
0