Partially Oxidized SnS<sub>2</sub> Atomic Layers Achieving Efficient Visible-Light-Driven CO<sub>2</sub> Reduction

Jiao, Xingchen; Li, Xiao Dong; Jin, Xiuyu; Sun, Yongfu; Xu, Jiaqi; Liang, Liang; Ju, Huanxin; Zhu, Junfa; Pan, Yang; Yan, Wensheng; Lin, Yue; Xie, Yi

doi:10.1021/jacs.7b10287

Cited by 412 publications

(262 citation statements)

References 49 publications

Supporting

Mentioning

247

Contrasting

Unclassified

Order By: Relevance

“…TEM images and XRD patterns of CdS/MoO x before and after the reaction show no obvious change, which further demonstrates the high stability of the CdS/MoO x photo catalyst ( Figure S11, Supporting Information). [37] To investigate the recombination behavior of charge carriers, fluorescence decay curves of different samples are collected ( Figure S13, Supporting Information). This phenomenon indicates that the generation of H 2 is driven by photoexcitation.…”

Section: Photocatalysismentioning

confidence: 99%

Ultrasmall MoO_x Clusters as a Novel Cocatalyst for Photocatalytic Hydrogen Evolution

et al. 2018

View full text Add to dashboard Cite

of semiconductor photocatalysts to retard the recombination of charge carriers and enhance surface reaction rates. [13][14][15] Among various kinds of cocatalysts, Pt often shows the best performance. However, practical application of Pt-based cocatalysts is limited by their scarcity and high cost. [16] Therefore, development of highly active and cost-efficient alternatives to Pt is urgently needed. A large number of transition metals (e.g., iron, cobalt, nickel, molybdenum, and tungsten) and their derivative compounds have been studied. Fu and colleagues have integrated CdS with MoS 2 and obtained much improved hydrogen evolution activity. [17] However, the performances of which are still far from satisfactory because of the low active surface areas and sluggish separation of electron-hole pairs. [18][19][20] Thus, designing novel materials which can address these problems may lead to the discovery of non-noble metal cocatalysts with enhanced performance. Metal oxide clusters, constructed by a small number of atoms, can largely expose active metal sites. [21] Moreover, when loaded onto semiconductor photocatalysts, metal oxide clusters can induce discrete energy bands to trap charge carriers and promote the separation of electrons and holes. Regarding such unique properties, cluster cocatalysts show the potential to boost the activity of semiconductor photocatalysts for solar water splitting.The performance of cluster cocatalysts is significantly influenced by the number and coordination environment of the active atoms. [22][23][24] Therefore, it is essential to establish a synthetic method to precisely control the configuration of clusters decorated on the surface of semiconductor photocatalysts at atomic level. [25,26] Herein, a bottom-up strategy is developed to decorate ultrasmall molybdenum-oxygen (MoO x ) clusters onto the surface of CdS nanowires (NWs). The decorated clusters with finely controlled size and configuration greatly enhance the photocatalytic H 2 evolution efficiency of CdS NWs.CdS NWs are first synthesized through a solvothermal approach. [27] X-ray diffraction (XRD) pattern of as-prepared sample shows characteristic peaks of CdS with hexagonal wurtzite crystal structure ( Figure S1, Supporting Information). Field-emission scanning electron microscope (FESEM), transmission electron microscope (TEM), and high-resolution TEM (HRTEM) images indicate the successful synthesis of CdS NWs with good crystallinity (Figure S2, Supporting Information). The average diameter of the CdS NWs is about 75 nm (Figure S3, Supporting Information). MoO x clusters are then decorated To enhance the performance of semiconductor photocatalysts, cocatalysts are used to accelerate surface reactions. Herein, ultrasmall molybdenumoxygen (MoO x ) clusters are developed as a novel non-noble cocatalyst, which significantly promotes the photocatalytic hydrogen generation rate of CdS nanowires (NWs). As indicated by extended X-ray absorption fine structure analysis, direct bonds are formed between CdS NWs and MoO x clusters,...

show abstract

Section: Photocatalysismentioning

confidence: 99%

Ultrasmall MoO_x Clusters as a Novel Cocatalyst for Photocatalytic Hydrogen Evolution

et al. 2018

View full text Add to dashboard Cite

show abstract

“…XRD patterns of hollow spheres, double‐, triple‐, and quadruple‐shelled SnS 2 /SnO 2 heterogeneous HoMSs (Supporting Information, Figure S2) indicate that the products are mixture of hexagonal SnS 2 (JCPDS card no. 23‐677) and tetragonal SnO 2 (JCPDS card no. 21‐1250), and no additional peaks can be detected.…”

Section: Figurementioning

confidence: 99%

“…After obtaining electrons or/and interacting with the surface protons from the dissociating of surface absorbed water molecules, CO 2 − or/and COOH* intermediates formed. Further protonation of COOH* intermediates could product CO* groups, and the last step in the photocatalytic CO 2 process was the desorption of CO* from the catalyst surface

true normalH_{2} normalO + 2 normalh^{+} \to 2 normalH^{+} + 1 / 2 normalO_{2}

true CO_{2} + 2 normalH^{+} + 2 normale^{-} \to CO + normalH_{2} normalO

…”

Section: Figurementioning

confidence: 99%

Lattice Distortion in Hollow Multi‐Shelled Structures for Efficient Visible‐Light CO₂Reduction with a SnS₂/SnO₂Junction

You

Wan

et al. 2019

Angewandte Chemie

View full text Add to dashboard Cite

Precise control of the micro‐/nanostructures of nanomaterials, such as hollow multi‐shelled structures (HoMSs), has shown its great advantages in various applications. Now, the crystal structure of building blocks of HoMSs are controlled by introducing the lattice distortion in HoMSs, for the first time. The lattice distortion located at the nanoscale interface of SnS2/SnO2 can provide additional active sites, which not only provide the catalytic activity under visible light but also improve the separation of photoexcited electron–hole pairs. Combined with the efficient light utilization, the natural advantage of HoMSs, a record catalytic activity was achieved in solid–gas system for CO2 reduction, with an excellent stability and 100 % CO selectivity without using any sensitizers or noble metals.

show abstract

“…[4] As at ypical twodimensional (2D) layered semiconductor,S nS 2 has been explored as an efficient photocatalyst owing to its unique optical and electronic properties. [6] Moreover,SnS 2 has an average carrier diffusion length as long as 0.19 mmt of acilitate the charge transfer. [6] Moreover,SnS 2 has an average carrier diffusion length as long as 0.19 mmt of acilitate the charge transfer.…”

Section: Introductionmentioning

confidence: 99%

A Plasma‐Triggered O−S Bond and P−N Junction Near the Surface of a SnS₂ Nanosheet Array to Enable Efficient Solar Water Oxidation

et al. 2019

View full text Add to dashboard Cite

Ap hotoelectrochemical (PEC) cell can split water into hydrogen and oxygen with the assistance of solar illumination. However,i ts application is still limited by excessive bulk carrier recombination and sluggish surface oxygen evolution reaction (OER) kinetics.T aking SnS 2 as an example,apromising layered optoelectronic semiconductor, Ar plasma treatment strategy was used to introduce aSnS/SnS 2 PÀNheterojunction and OÀSbond near the surface of aSnS 2 nanosheet array,s imultaneously increasing the separation efficiency of photogenerated electron-hole pairs in the bulk and lowering the OER overpotential at the surface.T he onset potential of the plasma-treated SnS 2 nanosheet arrays hifts negatively to 0.16 V, and the photocurrent density at 1.23 Vvs. RHE boosts to 2.15 mA cm À2 ,which is 7times that of pristine SnS 2 .T his work demonstrates af acile plasma treatment strategy to modulate the energy band structure and surface chemical states for improved PEC performance.

show abstract

Partially Oxidized SnS₂ Atomic Layers Achieving Efficient Visible-Light-Driven CO₂ Reduction

Cited by 412 publications

References 49 publications

Ultrasmall MoO_x Clusters as a Novel Cocatalyst for Photocatalytic Hydrogen Evolution

Ultrasmall MoO_x Clusters as a Novel Cocatalyst for Photocatalytic Hydrogen Evolution

Lattice Distortion in Hollow Multi‐Shelled Structures for Efficient Visible‐Light CO₂Reduction with a SnS₂/SnO₂Junction

A Plasma‐Triggered O−S Bond and P−N Junction Near the Surface of a SnS₂ Nanosheet Array to Enable Efficient Solar Water Oxidation

Contact Info

Product

Resources

About

Partially Oxidized SnS2 Atomic Layers Achieving Efficient Visible-Light-Driven CO2 Reduction

Cited by 412 publications

References 49 publications

Ultrasmall MoOx Clusters as a Novel Cocatalyst for Photocatalytic Hydrogen Evolution

Ultrasmall MoOx Clusters as a Novel Cocatalyst for Photocatalytic Hydrogen Evolution

Lattice Distortion in Hollow Multi‐Shelled Structures for Efficient Visible‐Light CO2Reduction with a SnS2/SnO2Junction

A Plasma‐Triggered O−S Bond and P−N Junction Near the Surface of a SnS2 Nanosheet Array to Enable Efficient Solar Water Oxidation

Contact Info

Product

Resources

About

Partially Oxidized SnS₂ Atomic Layers Achieving Efficient Visible-Light-Driven CO₂ Reduction

Ultrasmall MoO_x Clusters as a Novel Cocatalyst for Photocatalytic Hydrogen Evolution

Ultrasmall MoO_x Clusters as a Novel Cocatalyst for Photocatalytic Hydrogen Evolution

Lattice Distortion in Hollow Multi‐Shelled Structures for Efficient Visible‐Light CO₂Reduction with a SnS₂/SnO₂Junction

A Plasma‐Triggered O−S Bond and P−N Junction Near the Surface of a SnS₂ Nanosheet Array to Enable Efficient Solar Water Oxidation