Near-infrared light-driven photofixation of nitrogen over Ti3C2Tx/TiO2 hybrid structures with superior activity and stability

Hou, Tingting; Li, Qi; Yida, Zhang; Zhu, Wenkun; Yu, Kaifu; Wang, Sanmei; Xu, Quan; Liang, Shuquan; Wang, Liangbing

doi:10.1016/j.apcatb.2020.119072

Cited by 90 publications

(46 citation statements)

References 37 publications

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“…41,43 MXene surface oxidation is most commonly employed in Ti-based MXenes to form TiO2 photocatalysts, 55 although oxidation can be also applied to V, Nb, and Mo-based MXenes to form their respective oxides. 58,62,82 In-situ oxidation is achieved through flash oxidation (1150 °C, 30 s), 55 prolonged oxidation from calcination (350-650 °C), [85][86][87] hydro/solvothermal processes (120-220 °C), 47,78,[88][89][90][91] or CO2 oxidation (500-900 °C). 62,83 Control over the MXenes' surface Tx groups prior to oxidation is crucial, since different surface terminations have resulted in morphological differences in the oxides formed.…”

Section: Design Strategies For Mxene Hybrids and Compositesmentioning

confidence: 99%

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Rational Design of Two-Dimensional Transition Metal Carbide/Nitride (MXene) Hybrids and Nanocomposites for Catalytic Energy Storage and Conversion

et al. 2020

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Electro-, photo-, and photoelectrocatalysis play a critical role toward the realization of a sustainable energy economy. They facilitate numerous redox reactions in energy storage and conversion systems, enabling the production of chemical feedstock and clean fuels from abundant resources like water, carbon dioxide, and nitrogen. One major obstacle for their large-scale implementation is the scarcity of cost-effective, durable, and efficient catalysts. A family of twodimensional transition metal carbides, nitrides, and carbonitrides (MXenes) has recently emerged as promising earth-abundant candidates for large-area catalytic energy storage and conversion due to their unique properties of hydrophilicity, high metallic conductivity, and ease of production by solution processing. To take full advantage of these desirable properties, MXenes have been combined with other materials to form MXene hybrids with significantly enhanced catalytic performances beyond the sum of their individual components. MXene hybridization tunes the electronic structure towards optimal binding of redox active species to improve intrinsic activity, while increasing the density and accessibility of active sites. This review outlines recent strategies in the design of MXene hybrids for industrially relevant electrocatalytic, photocatalytic, and photoelectrocatalytic applications such as water splitting, metal-air/sulfur batteries, carbon dioxide reduction, and nitrogen reduction. By clarifying the roles of individual material components in the MXene hybrids, we provide design strategies to synergistically couple MXenes with associated materials for highly efficient and durable catalytic applications. We conclude by highlighting key gaps in the current understanding of MXene hybrids to guide future MXene hybrid designs in catalytic energy storage and conversion applications.

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Section: Design Strategies For Mxene Hybrids and Compositesmentioning

confidence: 99%

“…A significant yield (82 μmol g -1 h -1 ) was still detectible at 740 nm irradiation, corresponding to an apparent quantum efficiency (AQE) of 0.07% (Figure 13c). 86 Liao et al…”

Section: Mxenes Hybrids and Composites For Electrocatalytic/photocatalytic (Ec/pc) Nitrogen Reduction (N2rr)mentioning

confidence: 99%

Rational Design of Two-Dimensional Transition Metal Carbide/Nitride (MXene) Hybrids and Nanocomposites for Catalytic Energy Storage and Conversion

et al. 2020

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“…It has been shown that the heat treatment of Ti 3 C 2 T x in the air or owing CO 2 atmosphere could result in complete oxidation of TiO 2 embedded in the amorphous carbon layer by controlling the appropriate temperature. 94,95 In the early time, Naguib and coworkers rst studied the fast ash oxidation from Ti 3 C 2 T x to TiO 2 @C composites at 1150 C for 30 seconds under air atmosphere. 96 However, it seemed hard to control the reaction during the violent oxidation process.…”

Section: Synthesis Of 2d Nanosheetsmentioning

confidence: 99%

MXene derivatives: synthesis and applications in energy convention and storage

Sui

Chen

et al. 2021

RSC Adv.

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“…TheE XAFS spectrum of Ti 3 C 2 microsphere depicts two distinctive peaks located at the radial distance of about 1.8 and about 2.5 can be assigned to the Ti À Cbond and Ti À Ti bond, respectively. [20] Theanatase TiO 2 spectrum shows three peaks located at circa 1.6 ,2 .5 ,a nd 3.2 ,w hich can be assigned to the Ti-O,T i-Ti, and Ti-O-Ticoordination shells, respectively. [21] Notably,T S-Ti 3 C 2 microsphere demonstrates the reduced Ti À Cb ond and enlarged Ti À Ti bond, indicating the increased bond length induced by tensile strain, as consistent with STEM image analyzations.Also,the reduced coordination number of both Ti-C and Ti-Ticoordination can be observed in TS-Ti 3 C 2 ,i ndicating the structure distortion induced.…”

Section: Resultsmentioning

confidence: 99%

Strain Engineering of a MXene/CNT Hierarchical Porous Hollow Microsphere Electrocatalyst for a High‐Efficiency Lithium Polysulfide Conversion Process

et al. 2021

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Tensile-strained Mxene/carbon nanotube (CNT) porous microspheres were developed as an electrocatalyst for the lithium polysulfide (LiPS) redoxr eaction. The internal stress on the surface results in lattice distortion with expanding TiÀTi bonds,e ndowing the Mxene nanosheet with abundant active sites and regulating the d-band center of Ti atoms upshifted closer to the Fermi level, leading to strengthened LiPS adsorbability and accelerated catalytic conversion. The macroporous framework offers uniformed sulfur distribution, potent sulfur immobilization, and large surface area. The composite interwoven by CNT tentacle enhances conductivity and prevents the restacking of Mxene sheets.This combination of tensile strain effect and hierarchical architecture design results in smooth and favorable trapping-diffusion-conversion of LiPS on the interface.T he Li-S battery exhibits an initial capacity of 1451 mAh g À1 at 0.2 C, rate capability up to 8C,and prolonged cycle life.

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Near-infrared light-driven photofixation of nitrogen over Ti3C2Tx/TiO2 hybrid structures with superior activity and stability

Cited by 90 publications

References 37 publications

Rational Design of Two-Dimensional Transition Metal Carbide/Nitride (MXene) Hybrids and Nanocomposites for Catalytic Energy Storage and Conversion

Rational Design of Two-Dimensional Transition Metal Carbide/Nitride (MXene) Hybrids and Nanocomposites for Catalytic Energy Storage and Conversion

MXene derivatives: synthesis and applications in energy convention and storage

Strain Engineering of a MXene/CNT Hierarchical Porous Hollow Microsphere Electrocatalyst for a High‐Efficiency Lithium Polysulfide Conversion Process

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