Sandwich-like Co3O4/MXene composite with enhanced catalytic performance for Bisphenol A degradation

Liu, Yuxin; Luo, Rui; Li, Yang; Qi, Junwen; Wang, Chaohai; Li, Jiansheng; Sun, Xiuyun; Wang, Lianjun

doi:10.1016/j.cej.2018.04.155

Cited by 234 publications

(52 citation statements)

References 57 publications

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“…Importantly, these findings emphasize the significant role that the reducibility of MXenes plays during the surface modification. Similarly, nanocomposites such as Co 3 O 4 @Ti 3 C 2 T m , Co/PVP@Ti 3 C 2 T m , Co/N CNTs@Ti 3 C 2 T m , ammonium tetrathiomolybdate (ATM)@Ti 3 C 2 T m , ZIF‐67@Ti 3 C 2 T m , TiO 2 @Ti 3 C 2 T m ,30l and NiCoS@Ti 3 C 2 T m can also be obtained through this route …”

Section: Surface Modification Methods For Mxenesmentioning

confidence: 99%

Surface Modified MXene‐Based Nanocomposites for Electrochemical Energy Conversion and Storage

Wang

Yao

et al. 2019

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In recent years, the rapidly growing attention on MXenes makes the material a rising star in the 2D materials family. Although most researchers' interests are still focused on the properties of bare MXenes, little attention has been paid to the surface chemistry of MXenes and MXene‐based nanocomposites. To this end, this Review offers a comprehensive discussion on surface modified MXene‐based nanocomposites for energy conversion and storage (ECS) applications. Based on the structure and reaction mechanism, the related synthesis methods toward MXenes are briefly summarized. After the discussion of existing surface modification techniques, the surface modified MXene‐based nanocomposites and their inherent chemical principles are presented. Finally, the application of these surface modified nanocomposites for supercapacitors (SCs), lithium/sodium–ion batteries (LIBs/SIBs), and electrocatalytic water splitting is discussed. The challenges and prospects of MXene‐based nanocomposites for future ECS applications are also presented.

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Section: Surface Modification Methods For Mxenesmentioning

confidence: 99%

Surface Modified MXene‐Based Nanocomposites for Electrochemical Energy Conversion and Storage

Wang

Yao

et al. 2019

Small

182

132

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“…Due to its Gibbs free energy for hydrogen adsorption (Δ G H ) close to zero, [ 4 ] Ti 3 C 2 can be an excellent co‐catalyst for water reduction to hydrogen. Many investigations have verified the boosting photocatalytic water splitting activity with participation of Ti 3 C 2 , with Ag 3 PO 4 , [ 4 ] Co 3 O 4 , [ 5 ] g‐C 3 N 4 , [ 6 ] CdS, [ 7 ] and many other materials. [ 8–12 ]…”

Section: Figurementioning

confidence: 99%

Photogenerated Electron Transfer Process in Heterojunctions: In Situ Irradiation XPS

et al. 2020

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Photoelectron transfer between heterojuctions is an important process for photocatalysis, and identification of the electron transfer process provides valuable information for catalyst design. Herein, Ti3C2, one of the widely used two‐dimensional materials, is used to produce a heterojunction of TiO2 and Ti3C2 by an in situ growth method and the photogenerated electrons transfer between the two components for photocatalytic water splitting to hydrogen is investigated. Theoretical simulation and experimental tests proclaim that electrons transfer from Ti3C2 to TiO2 forms an internal electric field, which implies that there exists the driving force of electronic movement from TiO2 to Ti3C2. In situ irradiation X‐ray photoelectron spectroscopy shows the binding energies of TiC (in Ti3C2) and TiO (in TiO2) move toward negative and positive positions, respectively, verifying the photogenerated electrons produced from TiO2 and transferring to Ti3C2 driven by the internal electric field. In addition, the amount of TiO2 nanoparticles also affects the hydrogen evolution rate. Several parallel experiments are designed to uncover the fact that less or excess amount of TiO2 nanoparticles leads to a tinier shift of binding energy, which hints the quantity of heterojunction is a considerable factor in photocatalytic performance. This work develops a new method to directly monitor the photoelectron transfer process between heterojuctions.

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“…Ti 3 C 2 MXene with rich oxidized surface groups favors the heterojunction formed between MXene and semiconductors [35][36][37][38]. The heterojunction assists to establish strong interface contact between photocatalyst and cocatalyst.…”

Section: Introductionmentioning

confidence: 99%

2D/2D Heterojunction of R-scheme Ti3C2 MXene/MoS2 Nanosheets for Enhanced Photocatalytic Performance

et al. 2020

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Combination of two-dimensional (2D) materials and semiconductors is considered to be an effective way for fabricating photocatalysts for solving the environmental pollution and energy crisis. In this work, novel 2D/2D heterojunction of R-scheme Ti 3 C 2 MXene/MoS 2 nanosheets is successfully synthesized by hydrothermal reaction. The photocatalytic activity of the Ti 3 C 2 MXene/MoS 2 composites is evaluated by photocatalytic degradation and hydrogen evolution reaction. Especially, 0.5 wt% Ti 3 C 2 MXene/MoS 2 sample exhibits optimum methyl orange (MO) degradation and H 2 evolution rate of 97.4% and H 2 evolution rate of 380.2 μmol h −1 g −1 , respectively, which is attributed to the enhanced optical absorption ability and increased specific surface area. Additionally, Ti 3 C 2 MXene coupled with MoS 2 nanosheets is favorable for improving the photocurrent response and reducing the electrochemical impedance, leading to the enhanced electron transfer of excited semiconductor and inhibition of charge recombination. This work demonstrates that Ti 3 C 2 MXene could be a promising carrier to construct 2D/2D heterojunction in photocatalytic degradation and hydrogen evolution reaction.

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Sandwich-like Co3O4/MXene composite with enhanced catalytic performance for Bisphenol A degradation

Cited by 234 publications

References 57 publications

Surface Modified MXene‐Based Nanocomposites for Electrochemical Energy Conversion and Storage

Surface Modified MXene‐Based Nanocomposites for Electrochemical Energy Conversion and Storage

Photogenerated Electron Transfer Process in Heterojunctions: In Situ Irradiation XPS

2D/2D Heterojunction of R-scheme Ti3C2 MXene/MoS2 Nanosheets for Enhanced Photocatalytic Performance

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