Preparation of TiO2/Ti3C2Tx hybrid nanocomposites and their tribological properties as base oil lubricant additives

Xue, Maoquan; Wang, Zhiping; Yuan, Feng; Zhang, Xianghua; Wei, Wei; Tang, Hua; Li, Changsheng

doi:10.1039/c6ra27653a

Cited by 100 publications

(48 citation statements)

References 39 publications

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“…Nb 2 CT x can be synthesized by HF etching, like most other MXenes. [65] The Nb/C ratio, which can be effectively increased by adding an amine, as illustrated in Figure 2A,i sd ependento nt he number of Nb atoms etched by HF in the etching process. [66] In the MAX phases, the Nb atomsc onsist of Nb top (on the top of the MXenes heets)a nd Nb bottom (on the bottomo ft he MXenes heets) atoms, both of which bond with Al atoms.…”

Section: Lithium-ion Battery Electrodementioning

confidence: 99%

“…Apart from the Ti 3 C 2 T x MXene, the Nb 4 C 3 MXene is also a worthy anode material for LIBs. Nb 2 CT x can be synthesized by HF etching, like most other MXenes . The Nb/C ratio, which can be effectively increased by adding an amine, as illustrated in Figure A, is dependent on the number of Nb atoms etched by HF in the etching process .…”

Section: Energy Storagementioning

confidence: 99%

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Functional MXene Materials: Progress of Their Applications

Wang

Cao

et al. 2018

Chemistry An Asian Journal

187

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Nowadays, two-dimensional materials have many applications in materials science. As a novel two-dimensional layered material, MXene possesses distinct structural, electronic, and chemical properties; thus, it has potential applications in many fields, including battery electrodes, energy storage materials, sensors, and catalysts. Up to now, more than 70 MAX phases have been reported. However, in contrast to the variety of MAX phases, the existing MXene family merely includes Ti C, Ti C , (Ti , Nb ) C, (V , Cr ) C , Nb C, Ti CN, Ta C , V C, and Nb C . Among these materials, the Ti C T MXene exhibits prominently high volumetric capacitance, and the rate at which it transports electron is suitable for electrode materials in batteries and supercapacitors. Hence, Ti C T is commonly utilized as an electrode material in ion batteries such as Li , Na , K , Mg , Ca , and Al batteries. What is more, Ti C has the biggest specific surface area among all of these potential MXene phases, and therefore, Ti C has remarkably high gravimetric hydrogen storage capacities. In addition, Ti CO materials display extremely high activity for CO oxidation, which makes it possible to design catalysts for CO oxidation at low temperatures. Furthermore, Ti C T with O, OH, and/or F terminations can be used for water purification owing to excellent water permeance, favorable filtration ability, and long-time operation ability. This review supplies a relatively comprehensive summary of various applications of MXenes over the past few years.

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Section: Lithium-ion Battery Electrodementioning

confidence: 99%

Section: Energy Storagementioning

confidence: 99%

Functional MXene Materials: Progress of Their Applications

Wang

Cao

et al. 2018

Chemistry An Asian Journal

187

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“…In Figure 4a, the layered structure of Ti 3 C 2 T x powders is obviously shown after the etching effect of HF solution. In Figure 4b, after the hydrothermal oxidation, even though anatase TiO 2 particles exist on the Ti 3 C 2 T x powders, the layered structure of Ti 3 C 2 T x powders still remain, deriving from the titanium atoms on Ti 3 C 2 T x , acting as nucleating sites for the growth of anatase TiO 2 [27]. The HRSEM image of the circle area displays the anatase TiO 2 with a thickness of~30 nm and length of~200 nm, and it can be observed that the interfacial angle between the {001} and {101} facets of anatase TiO 2 is about 68.3 • [28].…”

Section: Compositions Experimental Conditionsmentioning

confidence: 99%

Electrodeposition of a Ni–P–TiO2/Ti3C2Tx Coating with In Situ Grown Nanoparticles TiO2 on Ti3C2Tx Sheets

Zhang

Wei

et al. 2019

Coatings

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Protective coatings have received considerable attention for the surface treatment of devices. Herein, in situ grown nanoparticles, TiO2 on Ti3C2Tx sheets (TiO2/Ti3C2Tx), are prepared by a simple hydrothermal oxidation method possessing the layer structure, which is applied to prepare protective coatings. The Ni–P–TiO2/Ti3C2Tx coating is prepared by electroplating technology, revealing more excellent properties than those of the Ni–P coating. Compared with the Ni–P coating, even though the Ni–P–TiO2/Ti3C2Tx coating holds the rough surface, the wettability is changed from hydrophilic to hydrophobic, owing to the gathering existence of TiO2/Ti3C2Tx on the surface and coarse surface texture. In addition, the participation of TiO2/Ti3C2Tx in the Ni–P coating can improve the capacity of corrosion prevention and decrease the corrosion rate. According to the results of hardness and wear tests, microhardness of the Ni–P–TiO2/Ti3C2Tx coating is approximately 1350 kg mm–2 and the coefficient of friction (COF) of Ni–P–TiO2/Ti3C2Tx coatings is about 0.40, which is much lower than that of Ni–P coatings. Thus, the Ni–P–TiO2/Ti3C2Tx coating can be a promising material to protect the surface of equipment.

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“…[30][31][32] The MXenes have already showed their significant applicability in biosensors, [33] electromagnetic wave absorption, [34] supercapacitors, [35,36] Li-ion batteries, [37,38] electronic devices, [39,40] gas sensors, [41] etc., because of their high conductivity, [42] hydrophilic surface, [43] and flexibility. [46] It is anticipated that the formed composite could provide the TiO 2 NPs with the highly conductive supporting platform and prevent the self-aggregation by themselves, [47,48] indicating their great potential as a promising NRR catalyst, although this was paid little attention before. [12,45] Meanwhile, since the marginal titanium atoms on the Ti 3 C 2 T x MXenes surface are thermodynamically metastable, which could act as nucleating sites to enable the generation of relatively stable TiO 2 , thereby a heterojunction structure of TiO 2 nanoparticles (NPs) distributed at the 2D Ti 3 C 2 T x nanosheets (TiO 2 /Ti 3 C 2 T x ) could be facilely formed.…”

mentioning

confidence: 99%

High‐Performance Electrocatalytic Conversion of N₂ to NH₃ Using Oxygen‐Vacancy‐Rich TiO₂ In Situ Grown on Ti₃C₂T_x MXene

Fang

Liu

Han

et al. 2019

Advanced Energy Materials

365

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To achieve the energy‐effective ammonia (NH3) production via the ambient‐condition electrochemical N2 reduction reaction (NRR), it is vital to ingeniously design an efficient electrocatalyst assembling the features of abundant surface deficiency, good dispersibility, high conductivity, and large surface specific area (SSA) via a simple way. Inspired by the fact that the MXene contains thermodynamically metastable marginal transition metal atoms, the oxygen‐vacancy‐rich TiO2 nanoparticles (NPs) in situ grown on the Ti3C2Tx nanosheets (TiO2/Ti3C2Tx) are prepared via a one‐step ethanol‐thermal treatment of the Ti3C2Tx MXene. The oxygen vacancies act as the main active sites for the NH3 synthesis. The highly conductive interior untreated Ti3C2Tx nanosheets could not only facilitate the electron transport but also avoid the self‐aggregation of the TiO2 NPs. Meanwhile, the TiO2 NPs generation could enhance the SSA of the Ti3C2Tx in return. Accordingly, the as‐prepared electrocatalyst exhibits an NH3 yield of 32.17 µg h−1 mg−1cat. at −0.55 V versus reversible hydrogen electrode (RHE) and a remarkable Faradaic efficiency of 16.07% at −0.45 V versus RHE in 0.1 m HCl, placing it as one of the most promising NRR electrocatalysts. Moreover, the density functional theory calculations confirm the lowest NRR energy barrier (0.40 eV) of TiO2 (101)/Ti3C2Tx compared with Ti3C2Tx or TiO2 (101) alone.

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Preparation of TiO₂/Ti₃C₂T_x hybrid nanocomposites and their tribological properties as base oil lubricant additives

Abstract: TiO2/Ti3C2Tx hybrid nanocomposites were successfully prepared by a liquid phase synthesis technology. The hybrid nanocomposites improve the tribological properties of base oil by mending the surface and formation a uniform tribofilm on the surface.

Cited by 100 publications

References 39 publications

Functional MXene Materials: Progress of Their Applications

Functional MXene Materials: Progress of Their Applications

Electrodeposition of a Ni–P–TiO2/Ti3C2Tx Coating with In Situ Grown Nanoparticles TiO2 on Ti3C2Tx Sheets

High‐Performance Electrocatalytic Conversion of N₂ to NH₃ Using Oxygen‐Vacancy‐Rich TiO₂ In Situ Grown on Ti₃C₂T_x MXene

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Preparation of TiO2/Ti3C2Tx hybrid nanocomposites and their tribological properties as base oil lubricant additives

Abstract: TiO2/Ti3C2Tx hybrid nanocomposites were successfully prepared by a liquid phase synthesis technology. The hybrid nanocomposites improve the tribological properties of base oil by mending the surface and formation a uniform tribofilm on the surface.

Cited by 100 publications

References 39 publications

Functional MXene Materials: Progress of Their Applications

Functional MXene Materials: Progress of Their Applications

Electrodeposition of a Ni–P–TiO2/Ti3C2Tx Coating with In Situ Grown Nanoparticles TiO2 on Ti3C2Tx Sheets

High‐Performance Electrocatalytic Conversion of N2 to NH3 Using Oxygen‐Vacancy‐Rich TiO2 In Situ Grown on Ti3C2Tx MXene

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Product

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About

Preparation of TiO₂/Ti₃C₂T_x hybrid nanocomposites and their tribological properties as base oil lubricant additives

High‐Performance Electrocatalytic Conversion of N₂ to NH₃ Using Oxygen‐Vacancy‐Rich TiO₂ In Situ Grown on Ti₃C₂T_x MXene