Synergistic Modulation of the Separation of Photo‐Generated Carriers via Engineering of Dual Atomic Sites for Promoting Photocatalytic Performance

Advanced Materials, Journal Year: 2021, Volume and Issue: 33(52)

Published: Oct. 18, 2021

The separation efficiency of photo-generated carriers is still a great challenge that restricts the practical application photocatalytic technology. design spatial path for at atomic level provides an innovative approach to address this challenge. Herein, facile dual sites strategy, consisting Cu-N4 and C-S-C active moieties decorated on polymeric carbon nitride (Cu SAs/p-CNS) reported simultaneously achieve highly efficient electrons holes boosting performance. As proof concept, Cu SAs/p-CNS successfully applied photo-oxidation 5-hydroxymethylfurfural (HMF) 2,5-diformylfuran (DFF), which exhibits 77.1% HMF conversion 85.6% DFF selectivity under visible light irradiation. activity considerably higher than bulk p-CN, S doped p-CN supported single atom catalysts. Theoretical calculations experimental results suggest that, during reaction, isolated directly capture electrons, while surrounding atoms bear holes, synergistically facilitates thus in enhanced activity. This study new perspective rational high performance photocatalysts level.

Language: Английский

---

Defect engineering in metal sulfides for energy conversion and storage

Coordination Chemistry Reviews, Journal Year: 2021, Volume and Issue: 448, P. 214147 - 214147

Published: Aug. 27, 2021

Language: Английский

---

Advantageous roles of phosphate decorated octahedral CeO2 {111}/g-C3N4 in boosting photocatalytic CO2 reduction: Charge transfer bridge and Lewis basic site

Applied Catalysis B Environment and Energy, Journal Year: 2021, Volume and Issue: 294, P. 120257 - 120257

Published: April 26, 2021

Language: Английский

---

Defect engineering of BiOX (X = Cl, Br, I) based photocatalysts for energy and environmental applications: Current progress and future perspectives

Coordination Chemistry Reviews, Journal Year: 2022, Volume and Issue: 464, P. 214541 - 214541

Published: April 13, 2022

Language: Английский

---

Boosted Inner Surface Charge Transfer in Perovskite Nanodots@Mesoporous Titania Frameworks for Efficient and Selective Photocatalytic CO₂ Reduction to Methane

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(20)

Published: Feb. 22, 2022

Exploring high-efficiency and stable halide perovskite-based photocatalysts for the selective reduction of CO2 to methane is a challenge because intrinsic photo- chemical instability perovskites. In this study, perovskites (Cs3 Bi2 Br9 Cs2 AgBiBr6 ) were grown in situ mesoporous TiO2 frameworks an efficient reduction. Benchmarked CH4 production rates 32.9 24.2 μmol g-1 h-1 with selectivities 88.7 % 84.2 %, achieved, respectively, which are better than most reported perovskite photocatalysts. Focused ion-beam sliced-imaging techniques used directly image hyperdispersed nanodots confined mesopores tunable sizes ranging from 3.8 9.9 nm. X-ray photoelectronic spectroscopy Kelvin probe force microscopy showed that built-in electric field between titania channels efficiently promoted photo-induced charge transfer. Density functional theory calculations indicate high selectivity was attributed Bi-adsorption-mediated hydrogenation *CO *HCO dominates CO desorption.

Language: Английский

---

Photoredox coupling of benzyl alcohol oxidation with CO2 reduction over CdS/TiO2 heterostructure under visible light irradiation

Applied Catalysis B Environment and Energy, Journal Year: 2022, Volume and Issue: 307, P. 121158 - 121158

Published: Jan. 31, 2022

Language: Английский

---

Integrating Single Atoms with Different Microenvironments into One Porous Organic Polymer for Efficient Photocatalytic CO₂ Reduction

Advanced Materials, Journal Year: 2021, Volume and Issue: 33(33)

Published: July 8, 2021

Abstract The precise identification of single‐atom catalysts (SACs) activity and boosting their efficiency toward CO 2 conversion is imperative yet quite challenging. Herein, for the first time a series porous organic polymers designed prepared simultaneously, containing well‐defined M–N 4 O sites. Such strategy not only offers multiactive sites to promote catalytic but also provides more direct chance identify metal center activity. photoreduction results indicate that introduction salphen unit with Ni–N centers into pristine phthalocyanine‐based framework achieves remarkable generation ability (7.77 mmol g –1 ) high selectivity 96% over H . In combination control experiments, as well theoretical studies, moiety evidenced active site RR compared traditional moiety, which can be ascribed effectively reducing energy barrier, facilitating adsorption reaction radicals *COOH, improving charge transportation. This work might shed some light on designing efficient SACs reduction through modification coordination environments.

Language: Английский

---

Recent advances of single-atom catalysts in CO₂conversion

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(7), P. 2759 - 2803

Published: Jan. 1, 2023

The catalytic transformation of CO 2 into valuable fuels/chemicals is a promising and economically profitable process because it offers an alternative toward fossil feedstocks the benefit transforming cycling on scale-up.

Language: Английский

---

Efficient piezocatalytic H2O2 production of atomic-level thickness Bi4Ti3O12 nanosheets with surface oxygen vacancy

Chemical Engineering Journal, Journal Year: 2021, Volume and Issue: 431, P. 133930 - 133930

Published: Dec. 2, 2021

Language: Английский

---

Targeted regulation of exciton dissociation in graphitic carbon nitride by vacancy modification for efficient photocatalytic CO2 reduction

Applied Catalysis B Environment and Energy, Journal Year: 2021, Volume and Issue: 292, P. 120179 - 120179

Published: April 5, 2021

Language: Английский

---