Emerging 0D Transition‐Metal Dichalcogenides for Sensors, Biomedicine, and Clean Energy

Li, Bang Lin; Setyawati, Magdiel Inggrid; Zou, Hao; Dong, Jiancheng; Luo, Hong Qun; Li, Nian Bing; Leong, David Tai

doi:10.1002/smll.201700527

Cited by 88 publications

(58 citation statements)

References 127 publications

(300 reference statements)

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“…As a class of traditional nanomaterials, discover new features of metal chalcogenides and fabrication of hybridizing metal chalcogenides with other materials have been subjects of intensive studies in recent years. Till now, metal chalcogenides have been used in many fields, such as catalysts,115–123 battery,53,109–111,116–128 optical application,136–139 biomedicine,112,124,140–142 gas and ions storage,103,143–157 etc. Metal chalcogenides‐based hybrid nanostructures are also interesting, like metal chalcogenides coupling with noble metals,55,158–163 oxides,33,93,109,117,124,155,164–193 carbon materials,194–203 etc 204–208.…”

Section: Synthesis Of Metal Chalcogenidesmentioning

confidence: 99%

Optimized Metal Chalcogenides for Boosting Water Splitting

et al. 2020

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splitting (2H 2 O → 2H 2 + O 2 ), consisting of hydrogen evolution and oxygen evolution reaction (HER/OER), can convert electricity to chemical energy in H 2 and O 2 for further energy applications. The practical application of overall water splitting, however, is still limited due to the lack of effective and stable catalysts to reduce reaction energy barrier and enhance Faraday efficient for both reactions. [6][7][8][9][10] Different materials have been studied for overall water splitting catalysis, like metal chalcogenides, metal carbides, oxides, etc. The transition metal carbides, especially graphene, have a better electroconductivity, ductility, and high surface area which display excellent performance in water splitting. [11][12][13] Oxides as another abundant species on the earth also show better water splitting performance, but their stability in hard media is not very good. [14][15][16] The layered double hydroxides (LDH) with unique structure, abundant interstratified electrons and channels for intermediate adsorption and desorption display wonderful water splitting performance. [17][18][19][20] Additionally, the metalorganic frameworks (MOFs) and their based nanocrystals as newly nanomaterials have got much attention in various fields, but their structure limited the active sites exposure for the complete coordinative metal sites. [21][22][23][24][25] Therefore, it is important to enable the cost-effective, large-scale production of these catalysts, and further improve the performance and efficiency of overall water splitting.Transition metal chalcogenides have many different compositions with various lattice structure, while those materials also have unique electronic structures. [26] Based on those superior properties, the transition metal chalcogenides show promising application in many energy applications, [27] such as electrochemical catalysis, photocatalysis, metal-air batteries, and other energy conversion reactions. Especially for their abundant defects sties, [26][27][28] tunable electronic structure, [29][30][31][32] and various morphology, [33][34][35][36][37] the transition metal chalcogenides exhibit boosting performance for water splitting. However, they still have some disadvantages, such as poor conductivity, activity, and stability, in water splitting limited their large-scale industrial application. [38][39][40][41][42] How to synthesize the active and stable transition metal chalcogenides is still a big challenge for wide application. In this Review, the several promising strategies are designed to prepare the active and stable transition metal chalcogenides (Scheme 1). → 2H 2 + O 2 ) is a very promising avenue to effectively and environmentally friendly produce highly pure hydrogen (H 2 ) and oxygen (O 2 ) at a large scale. Different materials have been developed to enhance the efficiency for water splitting. Among them, chalcogenides with unique atomic arrangement and high electronic transport show interesting catalytic properties in various electrochemical reactions, such as the ...

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Section: Synthesis Of Metal Chalcogenidesmentioning

confidence: 99%

Optimized Metal Chalcogenides for Boosting Water Splitting

et al. 2020

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“…Here, we intend to fill the gap along this exploration. For instance, TMD in quantum dot (QD) form deserves more investigation because their pronounced quantum confinement effects (QCE) and edge effects further aid applications in catalysts and sensing [ 29 , 30 ]. Significant enhancement in photoluminescence (PL) quantum efficiency by QCE is favorable to develop a sensor by optical means [ 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

2D CTAB-MoSe2 Nanosheets and 0D MoSe2 Quantum Dots: Facile Top-Down Preparations and Their Peroxidase-Like Catalytic Activity for Colorimetric Detection of Hydrogen Peroxide

et al. 2020

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We report the facile and economic preparation of two-dimensional (2D) and 0D MoSe2 nanostructures based on systematic and non-toxic top-down strategies. We demonstrate the intrinsic peroxidase-like activity of these MoSe2 nanostructures. The catalytic processes begin with facilitated decomposition of H2O2 by using MoSe2 nanostructures as peroxidase mimetics. In turn, a large amount of generated radicals oxidizes 3,3,5,5-tetramethylbenzidine (TMB) to produce a visible color reaction. The enzymatic kinetics of our MoSe2 nanostructures complies with typical Michaelis–Menten theory. Catalytic kinetics study reveals a ping–pong mechanism. Moreover, the primary radical responsible for the oxidation of TMB was identified to be Ȯ2− by active species-trapping experiments. Based on the peroxidase mimicking property, we developed a new colorimetric method for H2O2 detection by using 2D and 0D MoSe2 nanostructures. It is shown that the colorimetric sensing capability of our MoSe2 catalysts is comparable to other 2D materials-based colorimetric platforms. For instance, the linear range of H2O2 detection is between 10 and 250 μM by using 2D functionalized MoSe2 nanosheets as an artificial enzyme. Our work develops a systematic approach to use 2D materials to construct novel enzyme-free mimetic for a visual assay of H2O2, which has promising prospects in medical diagnosis and food security monitoring.

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“…However, whether long‐term use can cause excessive poisoning of phosphate ions, such as loss of metal ions in the body (e.g., calcium and magnesium), still needs long‐term investigation. Recently, Zhou et al reported that BP nanosheets as a highly bioactive antitumor drug due to their selective chemotherapeutic effect. Due to the accelerated energy metabolism and strong intracellular oxidative stress in cancer cells, the degradation rate of BPs in cancer cells was faster than in normal cells, resulting in severe elevation of phosphate anions in cancer cells.…”

Section: Unsolved Issues Of Bpmentioning

confidence: 99%

2D Black Phosphorus–Based Biomedical Applications

Luo

Fan

Zhou

et al. 2019

Adv Funct Materials

462

300

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Black phosphorus (BP) has increasingly attracted scientific attention since its first applications in biomedicine due to its unique properties and excellent biocompatibility. In particular, its layer-dependent bandgap, moderate carrier mobility, large surface-area-to-volume ratio, biodegradability, intrinsic photoacoustic properties, and biocompatibility make it an ideal candidate for use in photothermal therapy, photodynamic therapy, drug delivery, 3D printing, bioimaging, biosensing, and theranostics, which are reviewed here. In addition, the article discusses strategies to overcome challenges related to surface instability due to chemical degradation, a major obstacle for its application. This review not only provides a comprehensive summary on BP preparation and biomedical applications but also summarizes recent research and future possibilities.

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Emerging 0D Transition‐Metal Dichalcogenides for Sensors, Biomedicine, and Clean Energy

Cited by 88 publications

References 127 publications

Optimized Metal Chalcogenides for Boosting Water Splitting

Optimized Metal Chalcogenides for Boosting Water Splitting

2D CTAB-MoSe2 Nanosheets and 0D MoSe2 Quantum Dots: Facile Top-Down Preparations and Their Peroxidase-Like Catalytic Activity for Colorimetric Detection of Hydrogen Peroxide

2D Black Phosphorus–Based Biomedical Applications

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