Hydrothermal synthesis of TiO2/Ti3C2 nanocomposites with enhanced photocatalytic activity

Gao, Yupeng; Wang, Libo; Zhou, Aiguo; Li, Zhengyang; Chen, Jingkuo; Bala, Hari; Hu, Qianku; Cao, Xinxin

doi:10.1016/j.matlet.2015.02.135

Cited by 242 publications

(103 citation statements)

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“…And O group is the most common termination after the Ti 2 C was kept for some days (Gan et al 2013;Zhu et al 2015;Gao et al 2015). Using the calculating method described in Sect.…”

Section: Resultsmentioning

confidence: 99%

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Preparation and methane adsorption of two-dimensional carbide Ti2C

et al. 2016

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Here a novel material for methane adsorption was synthesized and studied, which is a graphene-like twodimensional (2D) carbide (Ti 2 C, a member of MXenes), formed by exfoliating Ti 2 AlC powders in a solution of lithium fluoride (LiF) and hydrochloric acid (HCl) at 40°C for 48 h. Based on first-principles calculation, theoretically perfect Ti 2 C with O termination has a specific surface area (SSA) of 671 m 2 g -1 and methane storage capacity is 22.9 wt%. Experimentally, 2.85 % exfoliated Ti 2 C with mesopores shown methane capacity of 11.58 cm 3 (STP: 0°C, 1 bar) g -1 (0.82 wt%) under 5 MPa and the SSA was 19.1 m 2 g -1 . For Ti 2 C sample intercalated with NH 3 ÁH 2 O, the adsorbed amount was increased to 16.81 cm 3 (STP) g -1 at same temperature. At the temperature of 323 K, the adsorbed amount of as-prepared Ti 2 C was increased to 52.76 cm 3 (STP) g -1 . For fully exfoliated Ti 2 C, the methane capacity was supposed to be 28.8 wt% or 1148 V (STP)v -1 . Ti 2 C theoretically has much larger volume methane capacity than current methane storage materials, though its SSA is not very high.

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“…And O group is the most common termination after the Ti 2 C was kept for some days (Gan et al 2013;Zhu et al 2015;Gao et al 2015). Using the calculating method described in Sect.…”

Section: Resultsmentioning

confidence: 99%

“…The most extensively researched MXene is Ti 3 C 2 (Mashtalir et al 2014;Sun et al 2014;Li et al 2015;Gao et al 2015;Yin et al 2015). It was first synthesized by selective etching Al elements from Ti 3 AlC 2 with HF acid (Naguib et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Preparation and methane adsorption of two-dimensional carbide Ti2C

et al. 2016

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“…[40][41][42] Therefore, combining Ti 3 C 2 T x /TiO 2 and co-catalyst such as LDHs is expected to produce high performance PEC photocatalyst.…”

Section: -39mentioning

confidence: 99%

In situ hybridization of an MXene/TiO₂/NiFeCo-layered double hydroxide composite for electrochemical and photoelectrochemical oxygen evolution

et al. 2018

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Electrochemical and photoelectrochemical (PEC) oxygen evolution reactions (OER) are receiving considerable attention owing to their important roles in the overall water splitting reaction. In this contribution, ternary NiFeCo-layered double hydroxide (LDH) nanoplates were in situ hybridized with Ti 3 C 2 T x (the MXene phase) via a simple solvothermal process during which Ti 3 C 2 T x was partially oxidized to form anatase TiO 2 nanoparticles. The obtained Ti 3 C 2 T x /TiO 2 /NiFeCo-LDH composite (denoted as TTL) showed a superb OER performance as compared with pristine NiFeCo-LDH and comercial IrO 2 catalyst, achieving a current density of 10 mA cm À2 at a potential of 1.55 V versus a reversible hydrogen electrode (vs. RHE) in 0.1 M KOH. Importantly, the composite was further deposited on a standard BiVO 4 film to construct a TTL/BiVO 4 photoanode which showed a significantly enhanced photocurrent density of 2.25 mA cm À2 at 1.23 V vs. RHE under 100 mW cm À2 illumination. The excellent PEC-OER performance can be attributed to the presence of TiO 2 nanoparticles which broadened the light adsorption to improve the generation of electron/hole pairs, while the ternary LDH nanoplates were efficient hole scavengers and the metallic Ti 3 C 2 T x nanosheets were effective shuttles for transporting electrons/ions. Our in situ synthetic method provides a facile way to prepare multi-component catalysts for effective water oxidation and solar energy conversion.

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“…There is also report about hydrothermal treatment of Ti 3 C 2 T x which is resulted in hybrid TiO 2 and Ti 3 C 2 structure with good photocatalytic properties. The produced TiO 2 structure depends on temperature and time of hydrothermal treatment [14].…”

Section: Introductionmentioning

confidence: 99%

Studying of 2D Titanium Carbide Structure by Raman Spectroscopy after Heat Treatment in Argon and Hydrogen Atmospheres

Kaipoldayev

Mukhametkarimov

Немкаева

et al. 2017

Eurasian Chem. Tech. J.

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Herein we show the effect of heat treatment of two dimensional layered titanium carbide structure (Ti 3 C 2 T x ), so called MXene. As prepared MXene has functional groups -OH, -F, -Cl. In order to remove the functional groups we heat treated the MXene in Ar (with 0.01% O 2 ) and H 2 (with 0.01% H 2 O) atmospheres. We discovered the significant decrease in the amount of functional groups (-F and -Cl) and increase in the -O content, which refers to the oxidation of the material. Also we determined the optimal regime for Raman spectroscopy in order to avoid any changes in the structure of the material. We revealed that titanium carbide changes its structure at 700 °C and 900 °C into two different titanium dioxide modifications like rutile and anatase in Ar (with 0.01% O 2 ) atmosphere. Also there are small changes occurred in Ti 3 C 2 Tx structure and formation of amorphous carbon after 700 °C treatment in H 2 (with 0.01% H 2 O) atmosphere and formation of TiO 2 (rutile) at 900 °C. Energydispersive X-ray spectroscopy (EDX) revealed the reduction of functional groups at 700 °C in both atmospheres and total disappearance of -F and -Cl and increasing the oxygen at 900 °C. The huge increase of oxygen by atomic percent, can be explained by the initial oxygen content in argon and hydrogen gases.

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Hydrothermal synthesis of TiO2/Ti3C2 nanocomposites with enhanced photocatalytic activity

Cited by 242 publications

References 20 publications

Preparation and methane adsorption of two-dimensional carbide Ti2C

Preparation and methane adsorption of two-dimensional carbide Ti2C

In situ hybridization of an MXene/TiO₂/NiFeCo-layered double hydroxide composite for electrochemical and photoelectrochemical oxygen evolution

Studying of 2D Titanium Carbide Structure by Raman Spectroscopy after Heat Treatment in Argon and Hydrogen Atmospheres

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Hydrothermal synthesis of TiO2/Ti3C2 nanocomposites with enhanced photocatalytic activity

Cited by 242 publications

References 20 publications

Preparation and methane adsorption of two-dimensional carbide Ti2C

Preparation and methane adsorption of two-dimensional carbide Ti2C

In situ hybridization of an MXene/TiO2/NiFeCo-layered double hydroxide composite for electrochemical and photoelectrochemical oxygen evolution

Studying of 2D Titanium Carbide Structure by Raman Spectroscopy after Heat Treatment in Argon and Hydrogen Atmospheres

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In situ hybridization of an MXene/TiO₂/NiFeCo-layered double hydroxide composite for electrochemical and photoelectrochemical oxygen evolution