Photocatalytic Activity of TiNbC-Modified TiO2 during Hydrogen Evolution and CO2 Reduction

Syuy, Alexander V.; Shtarev, Dmitry S.; Kozlova, Ekaterina A.; Kurenkova, Anna Yu.; Zhurenok, Angelina V.; Shtareva, Anna V.; Gurin, Mikhail S.; Tselikov, Gleb I.; Tikhonowski, Gleb V.; Arsenin, Aleksey; Volkov, Valentyn

doi:10.3390/app13169410

Cited by 7 publications

(4 citation statements)

References 39 publications

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“…Ti 3 C 2 T x MXenes demonstrate an outstanding conductivity (2.0 × 10 4 S cm −1 ), possess a two-dimensional structure, feature abundant surface functional groups, and have the capability to enhance electrochemical performance by expanding their interlayer spacing. The unique layered arrangement of Ti 3 C 2 T x MXene provides ample room for anchoring functional nanomaterials, promoting better dispersion on the Ti 3 C 2 T x MXene surface [23][24][25]. This attribute underscores the potential effectiveness of Ti 3 C 2 T x MXenes in addressing the challenge of nanomaterial agglomeration [26].…”

Section: Introductionmentioning

confidence: 95%

Synergistic Charge Storage Enhancement in Supercapacitors via Ti3C2Tx MXene and CoMoO4 Nanoparticles

Young,

Wu,

2024

Micromachines

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MXene has emerged as a highly promising two-dimensional (2D) layered material with inherent advantages as an electrode material, such as a high electrical conductivity and spacious layer distances conducive to efficient ion transport. Despite these merits, the practical implementation faces challenges due to MXene’s low theoretical capacitance and issues related to restacking. In order to overcome these limitations, we undertook a strategic approach by integrating Ti3C2Tx MXene with cobalt molybdate (CoMoO4) nanoparticles. The CoMoO4 nanoparticles bring to the table rich redox activity, high theoretical capacitance, and exceptional catalytic properties. Employing a facile hydrothermal method, we synthesized CoMoO4/Ti3C2Tx heterostructures, leveraging urea as a size-controlling agent for the CoMoO4 precursors. This innovative heterostructure design utilizes Ti3C2Tx MXene as a spacer, effectively mitigating excessive agglomeration, while CoMoO4 contributes its enhanced redox reaction capabilities. The resulting CoMoO4/Ti3C2Tx MXene hybrid material exhibited 698 F g−1 at a scan rate of 5 mV s−1, surpassing that of the individual pristine Ti3C2Tx MXene (1.7 F g−1) and CoMoO4 materials (501 F g−1). This integration presents a promising avenue for optimizing MXene-based electrode materials, addressing challenges and unlocking their full potential in various applications.

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Section: Introductionmentioning

confidence: 95%

Synergistic Charge Storage Enhancement in Supercapacitors via Ti3C2Tx MXene and CoMoO4 Nanoparticles

Young,

Wu,

2024

Micromachines

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“…Therefore, the hydrogenation of CO 2 to various value-added products is one of the promising methods for utilizing this carbon-rich resource [ 6 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 ]. The main technologies for producing high-value chemicals from CO 2 include thermal catalytic methods, photocatalytic methods [ 22 , 23 , 24 , 25 ], and electrocatalytic methods [ 26 , 27 , 28 , 29 ]. Among them, thermal catalytic CO 2 conversion technology has the advantages of a high catalytic performance, easy-to-control reaction conditions, and large-scale industrial application.…”

Section: Introductionmentioning

confidence: 99%

Development of Multifunctional Catalysts for the Direct Hydrogenation of Carbon Dioxide to Higher Alcohols

Chen,

Liu,

Chen

et al. 2024

Molecules

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The direct hydrogenation of greenhouse gas CO2 to higher alcohols (C2+OH) provides a new route for the production of high-value chemicals. Due to the difficulty of C-C coupling, the formation of higher alcohols is more difficult compared to that of other compounds. In this review, we summarize recent advances in the development of multifunctional catalysts, including noble metal catalysts, Co-based catalysts, Cu-based catalysts, Fe-based catalysts, and tandem catalysts for the direct hydrogenation of CO2 to higher alcohols. Possible reaction mechanisms are discussed based on the structure–activity relationship of the catalysts. The reaction-coupling strategy holds great potential to regulate the reaction network. The effects of the reaction conditions on CO2 hydrogenation are also analyzed. Finally, we discuss the challenges and potential opportunities for the further development of direct CO2 hydrogenation to higher alcohols.

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“…Titanium atoms on MXene may become the nucleation center of the TiO 2 photocatalyst, and a close interface connection is formed between MXene and TiO 2 photocatalyst, to minimize the recombination of photogenerated carriers induced by defects [9]. So far, a large number of MXene/TiO 2 composites have been constructed for the conversion of CO 2 [10][11][12][13]. It is proved this design can effectively broaden the light absorption range of TiO 2 and improve the migration efficiency of photogenerated carriers in TiO 2, which is obviously beneficial to the conversion of CO 2 .The structure of Ti 3 CN, in which nitrogen atoms randomly replace carbon atoms and the titanium layer is stacked in a hexagonal structure, is very similar to that of Ti 3 C 2 [14].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Carrier Migration by Monolayer MXene Structure in Ti3CN/TiO2 Heterojunction to Achieve Efficient Photothermal Synergistic Transformation of CO2

Zhu,

Guo,

Wang

et al. 2024

Catalysts

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Carbon nitride MXene exhibits good metal conductivity, high photothermal conversion, carrier mobility, and high exposure of active sites, which makes it a promising co-catalyst for photothermal synergistic transformation of CO2. In this paper, Ti3CN/TiO2 heterojunction was constructed in situ using Ti3CN as TiO2 precursor to investigate the performance of Ti3CN MXene in photothermal synergistic transformation of CO2, and then the monolayer structure was utilized to enhance the interfacial charge transfer and improve the photothermal catalytic activity of Ti3CN. The catalysts were characterized by SEM, XRD, XPS, and UV-Vis DRS, and it was found the heterojunction constructed by monolayer MXene had a narrower bandgap and a higher carrier generation mobility, which, combined with the catalytic activity test, proved the single monolayer Ti3CN MXene had better photothermal synergistic conversion efficiency of CO2, and the heterojunction yield was 11.36 μmol·g−1·h−1 after layering, compared with that before layering (9.41%), which was 1.2 times higher than that before layering (9.41 μmol·g−1·h−1).

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Photocatalytic Activity of TiNbC-Modified TiO2 during Hydrogen Evolution and CO2 Reduction

Cited by 7 publications

References 39 publications

Synergistic Charge Storage Enhancement in Supercapacitors via Ti3C2Tx MXene and CoMoO4 Nanoparticles

Synergistic Charge Storage Enhancement in Supercapacitors via Ti3C2Tx MXene and CoMoO4 Nanoparticles

Development of Multifunctional Catalysts for the Direct Hydrogenation of Carbon Dioxide to Higher Alcohols

Enhancement of Carrier Migration by Monolayer MXene Structure in Ti3CN/TiO2 Heterojunction to Achieve Efficient Photothermal Synergistic Transformation of CO2

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