Palladium nanoparticles anchored MoS2-MXene composite modified electrode for rapid sensing of toxic bisphenol A in aqueous media

Vilian, A.T. Ezhil; Alhammadi, Munirah; Bhaskaran, Gokul; Hwang, Seung‐Kyu; Kim, Suheon; Tiwari, Jitendra N.; Kumar, Krishan; Huh, Yun Suk; Han, Young‐Kyu

doi:10.1016/j.cej.2023.144017

“…[21][22][23] At the same time, we are also considering the possibility of capturing electrons in the conduction band of ZIS using a material with good conductivity, such as Ti 3 AlC 2 . [24][25][26] In particular, Ti 2 C 3 T x MXene quantum dots (MQDs), as a zero-dimensional conductive material, can easily form a dense interface with other materials while inheriting the inherent advantages of their two-dimensional counterparts. [27][28][29] All of the aforementioned considerations inspire us to elaborately design and prepare FO/MQDs/ZIS photoanode to promote the directional simultaneous migration of electrons and holes of ZIS, thereby suppressing their recombination.…”

Section: Introductionmentioning

confidence: 99%

“…Interfacial chemical bonds act as atomic‐level charge transfer channels in composite photoanodes, facilitating faster carrier transfer between interfaces and thus accelerating reaction kinetics [21–23] . At the same time, we are also considering the possibility of capturing electrons in the conduction band of ZIS using a material with good conductivity, such as Ti 3 AlC 2 [24–26] . In particular, Ti 2 C 3 T x MXene quantum dots (MQDs), as a zero‐dimensional conductive material, can easily form a dense interface with other materials while inheriting the inherent advantages of their two‐dimensional counterparts [27–29] …”

Section: Introductionmentioning

confidence: 99%

Fast Interfacial Carrier Dynamics Modulated by Bidirectional Charge Transport Channels in ZnIn₂S₄‐based Composite Photoanodes Probed by Scanning Photoelectrochemical Microscopy

Zhang,

Du,

Xiao

et al. 2023

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Limited charge separation/transport efficiency remains the primary obstacle of achieving satisfying photoelectrochemical (PEC) water splitting performance. Therefore, it is essential to develop diverse interfacial engineering strategies to mitigate charge recombination. Despite obvious progress having been made, most works only considered a single‐side modulation in either the electrons of conduction band or the holes of valence band in a semiconductor photoanode, leading to a limited PEC performance enhancement. Beyond this conventional thinking, we developed a novel coupling modification strategy to achieve a composite electrode with bidirectional carrier transport for a better charge separation, in which Ti2C3Tx MXene quantum dots (MQDs) and α‐Fe2O3 nanodots (FO) are anchored on the surface of ZnIn2S4 (ZIS) nanoplates, resulting in markedly improved PEC water splitting of pure ZIS photoanode. Systematic studies indicated that the bidirectional charge transfer pathways were stimulated due to MQDs as “electron extractor” and S−O bonds as carriers transport channels, which synergistically favors significantly enhanced charge separation. The enhanced kinetic behavior at the FO/MQDs/ZIS interfaces was systematically and quantitatively evaluated by a series of methods, especially scanning photoelectrochemical microscopy. This work may deepen our understanding of interfacial charge separation, and provide valuable guidance for the rational design and fabrication of high‐performance composite electrodes.

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Materials Containing Single‐, Di‐, Tri‐, and Multi‐Metal Atoms Bonded to C, N, S, P, B, and O Species as Advanced Catalysts for Energy, Sensor, and Biomedical Applications

Tiwari,

Kumar,

Safarkhani

et al. 2024

Advanced Science

7

0

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Modifying the coordination or local environments of single‐, di‐, tri‐, and multi‐metal atom (SMA/DMA/TMA/MMA)‐based materials is one of the best strategies for increasing the catalytic activities, selectivity, and long‐term durability of these materials. Advanced sheet materials supported by metal atom‐based materials have become a critical topic in the fields of renewable energy conversion systems, storage devices, sensors, and biomedicine owing to the maximum atom utilization efficiency, precisely located metal centers, specific electron configurations, unique reactivity, and precise chemical tunability. Several sheet materials offer excellent support for metal atom‐based materials and are attractive for applications in energy, sensors, and medical research, such as in oxygen reduction, oxygen production, hydrogen generation, fuel production, selective chemical detection, and enzymatic reactions. The strong metal–metal and metal–carbon with metal–heteroatom (i.e., N, S, P, B, and O) bonds stabilize and optimize the electronic structures of the metal atoms due to strong interfacial interactions, yielding excellent catalytic activities. These materials provide excellent models for understanding the fundamental problems with multistep chemical reactions. This review summarizes the substrate structure‐activity relationship of metal atom‐based materials with different active sites based on experimental and theoretical data. Additionally, the new synthesis procedures, physicochemical characterizations, and energy and biomedical applications are discussed. Finally, the remaining challenges in developing efficient SMA/DMA/TMA/MMA‐based materials are presented.

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Fast Interfacial Carrier Dynamics Modulated by Bidirectional Charge Transport Channels in ZnIn₂S₄‐based Composite Photoanodes Probed by Scanning Photoelectrochemical Microscopy

Zhang,

Du,

Xiao

et al. 2023

Angewandte Chemie

0

View full text Add to dashboard Cite

Limited charge separation/transport efficiency remains the primary obstacle of achieving satisfying photoelectrochemical (PEC) water splitting performance. Therefore, it is essential to develop diverse interfacial engineering strategies to mitigate charge recombination. Despite obvious progress having been made, most works only considered a single‐side modulation in either the electrons of conduction band or the holes of valence band in a semiconductor photoanode, leading to a limited PEC performance enhancement. Beyond this conventional thinking, we developed a novel coupling modification strategy to achieve a composite electrode with bidirectional carrier transport for a better charge separation, in which Ti2C3Tx MXene quantum dots (MQDs) and α‐Fe2O3 nanodots (FO) are anchored on the surface of ZnIn2S4 (ZIS) nanoplates, resulting in markedly improved PEC water splitting of pure ZIS photoanode. Systematic studies indicated that the bidirectional charge transfer pathways were stimulated due to MQDs as “electron extractor” and S−O bonds as carriers transport channels, which synergistically favors significantly enhanced charge separation. The enhanced kinetic behavior at the FO/MQDs/ZIS interfaces was systematically and quantitatively evaluated by a series of methods, especially scanning photoelectrochemical microscopy. This work may deepen our understanding of interfacial charge separation, and provide valuable guidance for the rational design and fabrication of high‐performance composite electrodes.

show abstract

Palladium nanoparticles anchored MoS2-MXene composite modified electrode for rapid sensing of toxic bisphenol A in aqueous media

Cited by 18 publications

References 40 publications

Fast Interfacial Carrier Dynamics Modulated by Bidirectional Charge Transport Channels in ZnIn₂S₄‐based Composite Photoanodes Probed by Scanning Photoelectrochemical Microscopy

Fast Interfacial Carrier Dynamics Modulated by Bidirectional Charge Transport Channels in ZnIn₂S₄‐based Composite Photoanodes Probed by Scanning Photoelectrochemical Microscopy

Materials Containing Single‐, Di‐, Tri‐, and Multi‐Metal Atoms Bonded to C, N, S, P, B, and O Species as Advanced Catalysts for Energy, Sensor, and Biomedical Applications

Fast Interfacial Carrier Dynamics Modulated by Bidirectional Charge Transport Channels in ZnIn₂S₄‐based Composite Photoanodes Probed by Scanning Photoelectrochemical Microscopy

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Palladium nanoparticles anchored MoS2-MXene composite modified electrode for rapid sensing of toxic bisphenol A in aqueous media

Cited by 18 publications

References 40 publications

Fast Interfacial Carrier Dynamics Modulated by Bidirectional Charge Transport Channels in ZnIn2S4‐based Composite Photoanodes Probed by Scanning Photoelectrochemical Microscopy

Fast Interfacial Carrier Dynamics Modulated by Bidirectional Charge Transport Channels in ZnIn2S4‐based Composite Photoanodes Probed by Scanning Photoelectrochemical Microscopy

Materials Containing Single‐, Di‐, Tri‐, and Multi‐Metal Atoms Bonded to C, N, S, P, B, and O Species as Advanced Catalysts for Energy, Sensor, and Biomedical Applications

Fast Interfacial Carrier Dynamics Modulated by Bidirectional Charge Transport Channels in ZnIn2S4‐based Composite Photoanodes Probed by Scanning Photoelectrochemical Microscopy

Contact Info

Product

Resources

About

Fast Interfacial Carrier Dynamics Modulated by Bidirectional Charge Transport Channels in ZnIn₂S₄‐based Composite Photoanodes Probed by Scanning Photoelectrochemical Microscopy

Fast Interfacial Carrier Dynamics Modulated by Bidirectional Charge Transport Channels in ZnIn₂S₄‐based Composite Photoanodes Probed by Scanning Photoelectrochemical Microscopy

Fast Interfacial Carrier Dynamics Modulated by Bidirectional Charge Transport Channels in ZnIn₂S₄‐based Composite Photoanodes Probed by Scanning Photoelectrochemical Microscopy