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

Chemical Reviews, Год журнала: 2019, Номер 120(2), С. 919 - 985

Опубликована: Авг. 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.

Язык: Английский

---

Computational 2D Materials Database: Electronic Structure of Transition-Metal Dichalcogenides and Oxides

The Journal of Physical Chemistry C, Год журнала: 2015, Номер 119(23), С. 13169 - 13183

Опубликована: Апрель 30, 2015

We present a comprehensive first-principles study of the electronic structure 51 semiconducting monolayer transition metal dichalcogenides and -oxides in 2H 1T hexagonal phases. The quasiparticle (QP) band structures with spin-orbit coupling are calculated $G_0W_0$ approximation comparison is made different density functional theory (DFT) descriptions. Pitfalls related to convergence $GW$ calculations for 2D materials discussed together possible solutions. edge positions relative vacuum used estimate alignment at various heterostructure interfaces. sensitivity in-plane lattice constant analysed rationalized terms structure. Finally, $q$-dependent dielectric functions effective electron/hole masses obtained from QP as input hydrogenic model exciton binding energies. Throughout paper we focus on trends correlations rather than detailed analysis specific materials. All computed data available an open database.

Язык: Английский

---

Role of Interfaces in Two-Dimensional Photocatalyst for Water Splitting

ACS Catalysis, Год журнала: 2018, Номер 8(3), С. 2253 - 2276

Опубликована: Янв. 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.

Язык: Английский

---

Photocatalytic hydrogen production using metal doped TiO2: A review of recent advances

Applied Catalysis B Environment and Energy, Год журнала: 2018, Номер 244, С. 1021 - 1064

Опубликована: Ноя. 28, 2018

Язык: Английский

---

MXene: a promising photocatalyst for water splitting

Journal of Materials Chemistry A, Год журнала: 2016, Номер 4(29), С. 11446 - 11452

Опубликована: Янв. 1, 2016

Identifying suitable photocatalysts for photocatalytic water splitting to produce hydrogen fuelviasunlight is an arduous task by the traditional trial-and-error method.

Язык: Английский

---

Ab Initio Prediction of Piezoelectricity in Two-Dimensional Materials

ACS Nano, Год журнала: 2015, Номер 9(10), С. 9885 - 9891

Опубликована: Авг. 27, 2015

Two-dimensional (2D) materials present many unique concepts, including material properties that sometimes differ dramatically from those of their bulk counterparts. One these properties, piezoelectricity, is important for micro- and nanoelectromechanical systems applications. Using symmetry analysis, we determine the independent piezoelectric coefficients four groups predicted synthesized 2D materials. We calculate with density-functional perturbation theory stiffness tensors in-plane coefficient d11 37 within families metal dichalcogenides, oxides, III–V semiconductor A majority structures, CrSe2, CrTe2, CaO, CdO, ZnO, InN, have greater than 5 pm/V, a typical value Our analysis shows buckled exhibit an out-of-plane d31. find d31 8 semiconductors ranges 0.02 to 0.6 pm/V. From statistical identify correlations between electronic structural elucidate origin piezoelectricity. Among materials, CrTe2 stand out combination large low formation energy are recommended experimental exploration.

Язык: Английский

---

High-performance SnSe thermoelectric materials: Progress and future challenge

Progress in Materials Science, Год журнала: 2018, Номер 97, С. 283 - 346

Опубликована: Апрель 30, 2018

Язык: Английский

---

2D Nanomaterials for Photocatalytic Hydrogen Production

ACS Energy Letters, Год журнала: 2019, Номер 4(7), С. 1687 - 1709

Опубликована: Июнь 11, 2019

The photocatalytic water splitting technique is a promising alternative to produce hydrogen using facile and proficient method. In the current Review, recent progress made in evolution reaction (HER) 2D nanomaterials (NMs) composite heterostructures described. strong in-plane chemical bonds along with weak van der Waals interaction make these materials lucrative for surface-related applications. State-of-the-art protocols designed synthesis of NMs discussed detail. Review illustrates density functional theory (DFT)-based studies against new set NMs, which also highlights importance structural defects doping electronic structure. Additionally, describes influence electronic, structural, surface manipulation strategies. These impact structures, intrinsic conductivity, finally output toward HER. Moreover, this provides fresh perspective on prospects challenges existing behind application fabrication

Язык: Английский

---

Two-dimensional materials in semiconductor photoelectrocatalytic systems for water splitting

Energy & Environmental Science, Год журнала: 2018, Номер 12(1), С. 59 - 95

Опубликована: Окт. 10, 2018

Hydrogen production via solar water splitting can be enhanced by combining semiconductors with various 2-dimensional materials.

Язык: Английский

---

Engineering graphene and TMDs based van der Waals heterostructures for photovoltaic and photoelectrochemical solar energy conversion

Chemical Society Reviews, Год журнала: 2018, Номер 47(13), С. 4981 - 5037

Опубликована: Янв. 1, 2018

This review provides a systematic overview of the integration, surface, and interfacial engineering 2D/3D 2D/2D homo/heterojunctions for PV PEC applications.

Язык: Английский

---