Ultrathin 2D/2D WO3/g-C3N4 step-scheme H2-production photocatalyst

Applied Catalysis B Environment and Energy, Journal Year: 2018, Volume and Issue: 243, P. 556 - 565

Published: Nov. 5, 2018

Language: Английский

---

g‐C₃N₄‐Based Heterostructured Photocatalysts

Advanced Energy Materials, Journal Year: 2017, Volume and Issue: 8(3)

Published: Sept. 21, 2017

Abstract Photocatalysis is considered as one of the promising routes to solve energy and environmental crises by utilizing solar energy. Graphitic carbon nitride (g‐C 3 N 4 ) has attracted worldwide attention due its visible‐light activity, facile synthesis from low‐cost materials, chemical stability, unique layered structure. However, pure g‐C photocatalyst still suffers low separation efficiency photogenerated charge carriers, which results in unsatisfactory photocatalytic activity. Recently, ‐based heterostructures have become research hotspots for their greatly enhanced carrier performance. According different transfer mechanisms carriers between coupled components, heterostructured photocatalysts can be divided into following categories: conventional type II heterojunction, Z‐scheme p–n /metal heterostructure, /carbon heterostructure. This review summarizes recent significant progress on design special separation/transfer carriers. Moreover, applications fields, e.g., water splitting, dioxide reduction, degradation pollutants, are also reviewed. Finally, some concluding remarks perspectives challenges opportunities exploring advanced presented.

Language: Английский

---

Particulate Photocatalysts for Light-Driven Water Splitting: Mechanisms, Challenges, and Design Strategies

Chemical Reviews, Journal Year: 2019, Volume and Issue: 120(2), P. 919 - 985

Published: Aug. 8, 2019

Solar-driven water splitting provides a leading approach to store the abundant yet intermittent solar energy and produce hydrogen as clean sustainable carrier. A straightforward route light-driven is apply self-supported particulate photocatalysts, which expected allow be competitive with fossil-fuel-derived on levelized cost basis. More importantly, powder-based systems can lend themselves making functional panels large scale while retaining intrinsic activity of photocatalyst. However, all attempts generate via water-splitting date have unfortunately fallen short efficiency values required for practical applications. Photocatalysis photocatalyst particles involves three sequential steps: (i) absorption photons higher energies than bandgap excitation electron-hole pairs in particles, (ii) charge separation migration these photoexcited carriers, (iii) surface chemical reactions based carriers. In this review, we focus challenges each step summarize material design strategies overcome obstacles limitations. This review illustrates that it possible employ fundamental principles underlying photosynthesis tools materials science prepare photocatalysts overall splitting.

Language: Английский

---

Cocatalysts for Selective Photoreduction of CO₂into Solar Fuels

Chemical Reviews, Journal Year: 2019, Volume and Issue: 119(6), P. 3962 - 4179

Published: Feb. 14, 2019

Photoreduction of CO2 into sustainable and green solar fuels is generally believed to be an appealing solution simultaneously overcome both environmental problems energy crisis. The low selectivity challenging multi-electron photoreduction reactions makes it one the holy grails in heterogeneous photocatalysis. This Review highlights important roles cocatalysts selective photocatalytic reduction using semiconductor catalysts. A special emphasis this review placed on key role, design considerations modification strategies for photoreduction. Various cocatalysts, such as biomimetic, metal-based, metal-free, multifunctional ones, their are summarized discussed, along with recent advances area. provides useful information highly photo(electro)reduction electroreduction complements existing reviews various photocatalysts.

Language: Английский

---

Fundamentals of TiO₂ Photocatalysis: Concepts, Mechanisms, and Challenges

Advanced Materials, Journal Year: 2019, Volume and Issue: 31(50)

Published: Aug. 18, 2019

Photocatalysis has been widely applied in various areas, such as solar cells, water splitting, and pollutant degradation. Therefore, the photochemical mechanisms basic principles of photocatalysis, especially TiO2 have extensively investigated by surface science methods last decade, aiming to provide important information for photocatalysis under real environmental conditions. Recent progress that provides fundamental insights into at a molecular level is highlighted. Insights structures are discussed first, which concepts photocatalysis. Following this, details photochemistry three molecules (oxygen, water, methanol) on model surfaces presented, an attempt unravel relationship between charge/energy transfer bond breaking/forming Lastly, challenges opportunities mechanistic studies briefly, well possible models.

Language: Английский

---

Reactive species in advanced oxidation processes: Formation, identification and reaction mechanism

Chemical Engineering Journal, Journal Year: 2020, Volume and Issue: 401, P. 126158 - 126158

Published: July 4, 2020

Language: Английский

---

Semiconductor polymeric graphitic carbon nitride photocatalysts: the “holy grail” for the photocatalytic hydrogen evolution reaction under visible light

Energy & Environmental Science, Journal Year: 2019, Volume and Issue: 12(7), P. 2080 - 2147

Published: Jan. 1, 2019

Graphitic carbon nitrides and their composites with various morphologies bandgaps engineered for the hydrogen evolution reaction under visible light are reviewed.

Language: Английский

---

Nanostructured materials for photocatalysis

Chemical Society Reviews, Journal Year: 2019, Volume and Issue: 48(14), P. 3868 - 3902

Published: Jan. 1, 2019

Photocatalysis is a green technology which converts abundantly available photonic energy into useful chemical energy.

Language: Английский

---

Role of Interfaces in Two-Dimensional Photocatalyst for Water Splitting

ACS Catalysis, Journal Year: 2018, Volume and Issue: 8(3), P. 2253 - 2276

Published: Jan. 30, 2018

Hydrogen generation from the direct splitting of water by photocatalysis is regarded as a promising and renewable solution for energy crisis. The key to realize this reaction find an efficient robust photocatalyst that ideally makes use sunlight. Recently, due attractive properties such appropriate band structure, ultrahigh specific surface area, more exposed active sites, two-dimensional (2D) photocatalysts have attracted significant attention photocatalytic splitting. This Review attempts summarize recent progress in fabrication applications 2D including graphene-based photocatalysts, oxides, chalcogenides, carbon nitride, some other emerging materials construction strategies characterization techniques 2D/2D are summarized. Particular has been paid role interfaces these heterojunctions critical facilitating charge separation improving efficiency. We also critically discuss their stability Finally, we highlight ongoing challenges opportunities future development exciting still area research.

Language: Английский

---

A direct Z-scheme g-C3N4/SnS2 photocatalyst with superior visible-light CO2 reduction performance

Journal of Catalysis, Journal Year: 2017, Volume and Issue: 352, P. 532 - 541

Published: July 12, 2017

Language: Английский

---