Preparation of TiO2/Ti3C2Tx Composite for Hybrid Capacitive Deionization

Wen XI; Haibo LI

doi:10.15541/jim20200243

Journals >Journal of Inorganic Materials >Volume 36 >Issue 3 >Page 283 > Article

Journal of Inorganic Materials
Vol. 36, Issue 3, 283 (2021)

Preparation of TiO₂/Ti₃C₂T_x Composite for Hybrid Capacitive Deionization

Wen XI and Haibo LI^*

Author Affiliations

Ningxia Key Laboratory of Photovoltaic Materials, Ningxia University, Ningxia 750021, China

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DOI: 10.15541/jim20200243 Cite this Article

Wen XI, Haibo LI. Preparation of TiO₂/Ti₃C₂T_x Composite for Hybrid Capacitive Deionization[J]. Journal of Inorganic Materials, 2021, 36(3): 283 Copy Citation Text

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1. Calcination process of Ti₃AlC₂

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Synthesis flowchart of TiO2/Ti3C2Tx composites

2. Synthesis flowchart of TiO₂/Ti₃C₂T_x composites

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3. SEM images of Ti₃AlC₂(A), Ti₃C₂T_x(B, C), TiO₂/Ti₃C₂T_x-350(D), TiO₂/Ti₃C₂T_x-450(E) and TiO₂/Ti₃C₂T_x-550(F), HRTEM (G) and elemental mapping(H, I) of TiO₂/Ti₃C₂T_x-450

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4. XRD patterns (A) of various samples, XRD patterns (B, C) of TiO₂/Ti₃C₂T_x calcined at different temperatures, Raman spectra (D), N₂ adsorption-desorption isotherms (E) and pore size distributions (F) of various samples

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5. XPS spectra of Ti₃C₂T_x, TiO₂/Ti₃C₂T_x-350, TiO₂/Ti₃C₂T_x-450 and TiO₂/Ti₃C₂T_x-550

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6. CV curves(A), GCD(B) and EIS(C) of Ti₃C₂T_x, TiO₂/Ti₃C₂T_x-350, TiO₂/Ti₃C₂T_x-450 and TiO₂/Ti₃C₂T_x-550 with inset in (C) representing the equivalent circuit

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7. Desalination performance of TiO₂/Ti₃C₂T_x-450‖AC device

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8. SEM (A) and the enlarged (B) images of TiO₂/Ti₃C₂T_x-450 after 20 cycling, XRD patterns(C, D) of TiO₂/Ti₃C₂T_x-450 before and after desalting and regeneration

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Sample	Specific surface area/(m²·g^-1)	Pore size/nm	Pore volume/(cm³·g^-1)
Ti₃C₂T_x	8.542	51.979	0.111
TiO₂-Ti₃C₂T_x-350	23.227	26.394	0.153
TiO₂-Ti₃C₂T_x-450	14.630	41.005	0.150
TiO₂-Ti₃C₂T_x-550	12.324	40.134	0.124

Table 1. Comparison of specific surface areas, pore sizes and pore volumes of Ti₃C₂T_x, TiO₂/Ti₃C₂T_x-350, TiO₂/Ti₃C₂T_x-450 and TiO₂/Ti₃C₂T_x-550

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Sample	Specific surface area/(m²·g^-1)	Initial conductivity/(mg·L^-1)	Voltage/V	Desalination capacity/(mg·g^-1)	Ref.
Pre-conditioned Ti₃C₂T_x MXene	-	585.0	-1.2 (discharge potential)	9.19	[42]
Ti₃C₂ MXene	6.0	292.5	1.2	13.00	[39]
Ar plasma modified Ti₃C₂T_x	-	500.0	1.4	26.80	[43]
LiH/HCl-etched Ti₃C₂T_x MXene	2.1	585.0	1.2	67.70	[44]
Porous Ti₃C₂T_x MXene	293.0	10000.0	1.2	45.00	[40]
Porous nitrogen-doped MXene sheets(N-Ti₃C₂T_x)	368.8	5000.0	1.2	43.50±1.70	[45]
TiO₂/Ti₃C₂T_x-450	14.6	1500.0	1.2	22.00	This work

Table 2. Comparison of salt removal capacity among various CDI electrodes

Wen XI, Haibo LI. Preparation of TiO₂/Ti₃C₂T_x Composite for Hybrid Capacitive Deionization[J]. Journal of Inorganic Materials, 2021, 36(3): 283

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