Sulfur Vacancy-Rich O-Doped 1T-MoS2 Nanosheets for Exceptional Photocatalytic Nitrogen Fixation over CdS DOI

Benteng Sun,

Zhangqian Liang,

Yeye Qian

et al.

ACS Applied Materials & Interfaces, Journal Year: 2020, Volume and Issue: 12(6), P. 7257 - 7269

Published: Jan. 17, 2020

Here, we reported that sulfur vacancy-rich O-doped 1T-MoS2 nanosheets (denoted as SV-1T-MoS2) can surpass the activity of Pt cocatalysts to assist in photocatalytic nitrogen fixation CdS nanorods. SV-1T-MoS2 exhibit vacancies, O-doping, more metallic 1T phase, and high electronic conductivity, thus leading exposure active edge sites, Brunauer-Emmett-Teller surface area, enhanced visible light absorption, improved electron separation transfer, which are beneficial for fixation. Consequently, optimized 30 wt % SV-1T-MoS2-/CdS composites an outstanding rate 8220.83 μmol L-1 h-1 g-1 long-term stability under simulated solar irradiation, significantly higher than pure nanorods, CdS-Pt (0.1 %), 1T-MoS2/CdS composites. The catalytic mechanism on is discussed by density functional theory calculations.

Language: Английский

Lithium–Sulfur Battery Cathode Design: Tailoring Metal‐Based Nanostructures for Robust Polysulfide Adsorption and Catalytic Conversion DOI
Sue‐Faye Ng,

Michelle Yu Ling Lau,

Wee‐Jun Ong

et al.

Advanced Materials, Journal Year: 2021, Volume and Issue: 33(50)

Published: April 2, 2021

Abstract Lithium–sulfur (Li‐S) batteries have a high specific energy capacity and density of 1675 mAh g −1 2670 Wh kg , respectively, rendering them among the most promising successors for lithium‐ion batteries. However, there are myriads obstacles in practical application commercialization Li‐S batteries, including low conductivity sulfur its discharge products (Li 2 S/Li S ), volume expansion electrode, polysulfide shuttle effect. Hence, immense attention has been devoted to rectifying these issues, which metal‐based compounds (i.e., transition metal, metal phosphides, sulfides, oxides, carbides, nitrides, phosphosulfides, MXenes, hydroxides, metal‐organic frameworks) as hosts is profiled fascinating strategy hinder effect stemming from polar–polar interactions between polysulfides. This review encompasses fundamental electrochemical principles insights into polysulfides, with emphasis on intimate structure–activity relationship corroborated theoretical calculations. Additionally, integration conductive carbon‐based materials ameliorate existing adsorptive abilities compound systematically discussed. Lastly, challenges prospects toward smart design catalysts future development presented.

Language: Английский

Citations

331
Oxygen vacancies in metal oxides: recent progress towards advanced catalyst design DOI Open Access

Guoxin Zhuang,

Ya‐Wen Chen, Zanyong Zhuang

et al.

Science China Materials, Journal Year: 2020, Volume and Issue: 63(11), P. 2089 - 2118

Published: May 19, 2020

Language: Английский

Citations

327
Recent Advances in Plasmonic Photocatalysis Based on TiO2 and Noble Metal Nanoparticles for Energy Conversion, Environmental Remediation, and Organic Synthesis DOI Creative Commons
Ajay Kumar, Priyanka Choudhary, Ashish Kumar

et al.

Small, Journal Year: 2021, Volume and Issue: 18(1)

Published: Aug. 15, 2021

Abstract Plasmonic photocatalysis has emerged as a prominent and growing field. It enables the efficient use of sunlight an abundant renewable energy source to drive myriad chemical reactions. For instance, plasmonic in materials comprising TiO 2 nanoparticles (NPs) effective charge carrier separation tuning optical response longer wavelength regions (visible near infrared). In fact, ‐based effects are at forefront heterogeneous photocatalysis, having applications conversion, production liquid fuels, wastewater treatment, nitrogen fixation, organic synthesis. This review aims comprehensively summarize fundamentals provide guidelines for future work field above‐mentioned applications. The concepts state‐of‐the‐art description important parameters including formation Schottky junctions, hot electron generation transfer, electromagnetic enhancement, plasmon resonance scattering, photothermal heating have been covered this review. Synthetic approaches effect various physicochemical plasmon‐mediated on performances discussed. is envisioned that may inspire insights into rational development next photocatalysts with target enhanced selectivities.

Language: Английский

Citations

315
Construction of LSPR-enhanced 0D/2D CdS/MoO3− S-scheme heterojunctions for visible-light-driven photocatalytic H2 evolution DOI
Jinjun Peng, Jun Shen, Xiaohui Yu

et al.

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Journal Year: 2020, Volume and Issue: 42(1), P. 87 - 96

Published: May 30, 2020

Language: Английский

Citations

304
Recent progress in defective TiO2 photocatalysts for energy and environmental applications DOI
Zhenzi Li, Shijie Wang,

Jiaxing Wu

et al.

Renewable and Sustainable Energy Reviews, Journal Year: 2021, Volume and Issue: 156, P. 111980 - 111980

Published: Dec. 10, 2021

Language: Английский

Citations

304
Defect‐Rich High‐Entropy Oxide Nanosheets for Efficient 5‐Hydroxymethylfurfural Electrooxidation DOI

Kaizhi Gu,

Dongdong Wang, Chao Xie

et al.

Angewandte Chemie International Edition, Journal Year: 2021, Volume and Issue: 60(37), P. 20253 - 20258

Published: June 26, 2021

High-entropy oxides (HEOs), a new concept of entropy stabilization, exhibit unique structures and fascinating properties, are thus important class materials with significant technological potential. However, the conventional high-temperature synthesis techniques tend to afford micron-scale HEOs low surface area, catalytic activity available is still far from satisfactory because their limited exposed active sites poor intrinsic activity. Here we report low-temperature plasma strategy for preparing defect-rich nanosheets high first time employ them 5-hydroxymethylfurfural (HMF) electrooxidation. Owing structure, abundant oxygen vacancies, quinary (FeCrCoNiCu)3 O4 deliver improved HMF oxidation lower onset potential faster kinetics, outperforming that prepared by method. Our method opens opportunities synthesizing nanostructured great applications.

Language: Английский

Citations

300
Photocatalytic ammonia synthesis: Recent progress and future DOI
Shuai Zhang, Yunxuan Zhao, Run Shi

et al.

EnergyChem, Journal Year: 2019, Volume and Issue: 1(2), P. 100013 - 100013

Published: Aug. 12, 2019

Language: Английский

Citations

296
Oxygen Vacancy Engineering in Photocatalysis DOI
Yanmei Huang, Yu Yu, Yifu Yu

et al.

Solar RRL, Journal Year: 2020, Volume and Issue: 4(8)

Published: March 7, 2020

Photocatalysis, which converts natural solar energy into chemical energy, has emerged as one of the most appealing technologies in past decades. However, photocatalytic performances are limited by poor absorption visible light, charge‐carrier recombination during migration, and a high barrier for activating reactants. Oxygen vacancies semiconductive metal oxides reported to be vital improve their efficiency. In this regard, review provides concise overview oxygen transition systems, including functions, construction strategies, characterization methods, applications. Moreover, an outlook on current challenges promising opportunities field is provided.

Language: Английский

Citations

282
Gradient Hydrogen Migration Modulated with Self-Adapting S Vacancy in Copper-Doped ZnIn2S4 Nanosheet for Photocatalytic Hydrogen Evolution DOI
Shuqu Zhang, Zhifeng Zhang, Yanmei Si

et al.

ACS Nano, Journal Year: 2021, Volume and Issue: 15(9), P. 15238 - 15248

Published: Aug. 19, 2021

It is a challenge to regulate charge flow synergistically at the atomic level modulate gradient hydrogen migration (H migration) for boosting photocatalytic evolution. Herein, self-adapting S vacancy (Vs) induced with Cu introduction into ZnIn2S4 nanosheets was fabricated elaborately, which can tune separation and construct channel H migration. Detailed experimental results theoretical simulations uncover behavior mechanism of Vs generation after substituting Zn atom tendentiously. Cu–S bond shrinkage Zn–S distortion are presented around areas. Besides, by lowers internal electric field restrain electron transmission between layers, enriched on area because lower surface electrostatic potential. Atomic show synergistic effect regulating regional due dopant being hole trap an trap. The channels ΔGH0 constructed different sites, modulated Vs. Gradient driven photothermal occurs identical without striding across heterogeneous interface, valid pathway resistance H2 release. Ultimately, 5 mol % confined in achieves optimum evolution activity 9.8647 mmol g–1 h–1, 14.8 times higher than 0.6640 h–1 ZnIn2S4, apparent quantum efficiency reaches 37.11% 420 nm. This work demonstrates substitution provides cognition deeply.

Language: Английский

Citations

275
Piezo‐Photocatalysis over Metal–Organic Frameworks: Promoting Photocatalytic Activity by Piezoelectric Effect DOI
Chenxi Zhang,

Da Lei,

Chenfan Xie

et al.

Advanced Materials, Journal Year: 2021, Volume and Issue: 33(51)

Published: Oct. 13, 2021

The built-in electric field can be generated in the piezoelectric materials under mechanical stress. resulting effect is beneficial to charge separation photocatalysis. Meanwhile, stress usually gives rise accelerated mass transfer and enhanced catalytic activity. Unfortunately, it remains a challenge differentiate contribution of these two factors performance. Herein, for first time, isostructural metal-organic frameworks (MOFs), i.e., UiO-66-NH2 (Zr) (Hf), are adopted piezo-photocatalysis. Both MOFs, featuring same structures except diverse Zr/Hf-oxo clusters, possess distinctly different properties. Strikingly, (Hf) exhibits ≈2.2 times activity compared with that simultaneous light ultrasonic irradiation, though both MOFs display similar photocatalytic H2 production without irradiation. Given their pore features behaviors, difference unambiguously assignable effect. As result, contributions piezo-photocatalysis clearly distinguished owing stronger property (Hf).

Language: Английский

Citations

265