Hierarchical Hollow CoWO₄–Co(OH)₂ Heterostructured Nanoboxes Enabling Efficient Water Oxidation Electrocatalysis

Inorganic Chemistry, Journal Year: 2022, Volume and Issue: 61(35), P. 14224 - 14232

Published: Aug. 24, 2022

Rational design and construction of well-defined hollow heterostructured nanomaterials assembled by ultrathin nanosheets overtakes crucial role in developing high-efficiency oxygen evolution reaction (OER) electrocatalysts. Herein, a reliable metal–organic framework-mediated cation-exchange strategy to tune the geometric structure multicomponent heterostructures has been proposed for fabrication CoWO4–Co(OH)2 hierarchical nanoboxes rich nanosheets. Benefiting from nanostructure, offer plenty metal active centers available intermediates. Moreover, nanointerfaces between CoWO4 Co(OH)2 can function as bridge boosting efficient electron transfer Co(OH)2. As consequence, optimized exhibit outstanding electrocatalytic performance toward OER delivering 10 mA cm–2 with low overpotential 280 mV small Tafel slope 70.6 dec–1 well electrochemical stability. More importantly, this nanocatalyst couple Pt/C drive overall water splitting achieve voltage 1.57 V.

Language: Английский

---

Sulfur vacancies engineered self-supported Co3S4 nanoflowers as an efficient bifunctional catalyst for electrochemical water splitting

Applied Catalysis B Environment and Energy, Journal Year: 2022, Volume and Issue: 322, P. 122104 - 122104

Published: Oct. 27, 2022

Language: Английский

---

Local photothermal and photoelectric effect synergistically boost hollow CeO2/CoS2 heterostructure electrocatalytic oxygen evolution reaction

Journal of Colloid and Interface Science, Journal Year: 2022, Volume and Issue: 628, P. 663 - 672

Published: July 22, 2022

Language: Английский

---

Hollow Heterostructured Nanocatalysts for Boosting Electrocatalytic Water Splitting

The Chemical Record, Journal Year: 2022, Volume and Issue: 23(2)

Published: Oct. 4, 2022

The implementation of electrochemical water splitting demands the development and application electrocatalysts to overcome sluggish reaction kinetics hydrogen/oxygen evolution (HER/OER). Hollow nanostructures, particularly for hollow heterostructured nanomaterials can provide multiple solutions accelerate HER/OER owing their advantageous merit. Herein, recent advances nanocatalysts excellent performance are systematically summarized. Starting by illustrating intrinsically features heterostructures, achievements in engineering also highlighted with focus on structural design, interfacial engineering, composition regulation, catalytic evaluation. Finally, some perspective insights future challenges electrocatalytic discussed.

Language: Английский

---

Interfacial built-in electric-field for boosting energy conversion electrocatalysis

Nanoscale Horizons, Journal Year: 2023, Volume and Issue: 8(4), P. 441 - 452

Published: Jan. 1, 2023

A critical review of built-in electric fields for the applications in electrocatalytic reactions is organized by focusing on fundamental concepts, modification strategies, and positive influences promotion catalytic performance.

Language: Английский

---

Homogeneous NiMoO4–Co(OH)2 bifunctional heterostructures for electrocatalytic oxygen evolution and urea oxidation reaction

International Journal of Hydrogen Energy, Journal Year: 2023, Volume and Issue: 48(89), P. 34740 - 34749

Published: June 10, 2023

Language: Английский

---

Plasmon-Mediated Oxidase-like Activity on Ag@ZnS Heterostructured Hollow Nanowires for Rapid Visual Detection of Nitrite

Inorganic Chemistry, Journal Year: 2023, Volume and Issue: 62(4), P. 1659 - 1666

Published: Jan. 17, 2023

Rational design of fast and sensitive determination nitrite (NO2-) from a complicated actual sample overtakes crucial role in constructing high-efficiency sensing platform. Herein, visual NO2- platform with outstanding selectivity, sensitivity, stability based on surface plasmon resonance (SPR)-enhanced oxidase-like activity has been proposed. Benefiting the intrinsic photocatalytic limited light penetration ZnS, ZnS decorated Ag nanowires (Ag@ZnS) is determined. It demonstrated that electrons are generated efficiently then transferred into hot help localized SPR excitation, thus greatly oxidating colorless 3,3',5,5'-tetramethylbenzidine (TMB) to produce dark blue oxidized TMB (oxTMB). When added reaction system, oxTMB will selectively react generate diazotized oxTMB, leading color change green subsequently yellow. Owing specific recognition between recovery catalytic induced an enhanced colorimetric test wider linear range for determination, ultralow detection limit 0.1 μM, excellent practicability application real samples. This plasmon-enhanced not only provides smart approach realize assay high sensitivity simplicity but also modulates activities.

Language: Английский

---

Cation–Anion Dual Doping Modifying Electronic Structure of Hollow CoP Nanoboxes for Enhanced Water Oxidation Electrocatalysis

Inorganic Chemistry, Journal Year: 2022, Volume and Issue: 61(42), P. 16944 - 16951

Published: Oct. 12, 2022

Tuning the electronic state of a nanocatalyst is vital importance for elevating its catalytic performance toward oxygen evolution reaction (OER). Herein, cation-anion dual doping strategy has been proposed modifying structure CoP via Fe and S atoms. Impressively, demonstrated to be favorable improving carrier density produce more hydroxyl radicals (•OH), while can further modify improve charge-transfer characteristics, thereby synergistically decreasing energy barrier transformation O* OOH* promoting electrocatalytic OER performance. More importantly, highly open nanobox also beneficial exposure accessible catalytically active sites, which substantially facilitate electron mass transport, leading superb The successful modulation dual-doping will pose new designing advanced nanocatalysts energy-related catalysis process.

Language: Английский

---

Intensifying Hydrogen Spillover for Boosting Electrocatalytic Hydrogen Evolution Reaction

The Chemical Record, Journal Year: 2022, Volume and Issue: 23(3)

Published: Dec. 8, 2022

Abstract Hydrogen spillover has attracted increasing interests in the field of electrocatalytic hydrogen evolution reaction (HER) recent years because their distinct mechanism and beneficial terms for simultaneously weakening strong adsorption on metal strengthening weak support. By taking advantageous merits efficient transfer, spillover‐based binary catalysts have been widely investigated, which paves a new way boosting development production by water electrolysis. In this paper, we summarize progress interesting focusing advanced strategies intensifying towards HER. addition, challenging issues some perspective insights future electrocatalysts are also systematically discussed.

Language: Английский

---

Heterojunction MnO₂-nanosheet-decorated Ag nanowires with enhanced oxidase-like activity for the sensitive dual-mode detection of glutathione

Nanoscale, Journal Year: 2022, Volume and Issue: 14(41), P. 15340 - 15347

Published: Jan. 1, 2022

The biocatalytic design of nanomaterials with enzyme-like activity is considered a reliable and promising toolkit for the generation diagnostic agents in complex biological microenvironments.

Language: Английский

---