Water sorption by the perovskite-like layered titanate K2Nd2Ti3O10 in humid atmosphere

Utkina, T. D.; Chislov, Mikhail; Myshenkov, Mikhail S.; Rodionov, Ivan A.; Zvereva, Irina A.

doi:10.1007/s10973-018-7017-1

Cited by 7 publications

(3 citation statements)

References 9 publications

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“…Prior to protonation, the K 2 Nd 2 Ti 3 O 10 oxide was transformed into its hydrated form K 2 Nd 2 Ti 3 O 10 ×H 2 O by exposition to humid air (RH = 75%) for 24 h (Utkina et al, 2018). After the XRD analysis ensured complete hydration, the sample (15 g) was dispersed in 3 L of 0.1 M hydrochloric acid and stirred for 7 days at room temperature.…”

Section: Synthesismentioning

confidence: 99%

Layered Titanate H2Nd2Ti3O10 Intercalated With n-Butylamine: A New Highly Efficient Hybrid Photocatalyst for Hydrogen Production From Aqueous Solutions of Alcohols

et al. 2019

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A layered perovskite-type oxide intercalated with n-butylamine is reported as an efficient photocatalyst for hydrogen production from aqueous solutions of alcohols for the first time. The hybrid photocatalyst H 2 Nd 2 Ti 3 O 10 ×BuNH 2 was synthesized by solid-state ceramic method followed by protonation, intercalation of methylamine and subsequent substitution by n-butylamine. The product was characterized by powder XRD, TGA, STA-MS, DRS, IR, and Raman spectroscopy, CHN analysis, SEM. Intercalation of n-butylamine caused a dramatic increase in photocatalytic activity of H 2 Nd 2 Ti 3 O 10 in the reaction of hydrogen evolution from aqueous solutions of methanol, ethanol, and n-butanol under UV radiation. While the non-intercalated Pt-loaded H 2 Nd 2 Ti 3 O 10 showed a maximum quantum efficiency of only 2% in the 220-340 nm range, the efficiency for hybrid samples reached 23% under the same conditions and after variation of experimental parameters even 52% efficiency was achieved. This effect may be associated with the significant expansion of the interlayer space, which is considered as a separate reaction zone.

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Section: Synthesismentioning

confidence: 99%

Layered Titanate H2Nd2Ti3O10 Intercalated With n-Butylamine: A New Highly Efficient Hybrid Photocatalyst for Hydrogen Production From Aqueous Solutions of Alcohols

et al. 2019

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“…Recently, different studies have examined the heat capacity, thermodynamic, thermaldepending luminescence and adsorption study of RP related phases. [96,[98][99][100][101][102][103] However, DJ phase has the highest reactivity for grafting and intercalation reactions; among the three LPO's phases due to the lower charge density of the interlayer part. Giannici et al has reported the progress in IOH by taking DJ structured HLaNb 2 O 7 as the standard model.…”

Section: Grafting and Intercalation Reactions Of Dj/rp Perovskitementioning

confidence: 99%

A Review on the Synthesis and Modification of Functional Inorganic‐Organic‐Hybrid Materials via Microwave‐Assisted Method

Atri

Tomar

2021

ChemistrySelect

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The microwave-assisted method is an appropriate route; to overcome the energy barrier for stabilizing perovskite structured based inorganic-organic-hybrid materials. The motivation for using the microwave-assisted method in material science as an effective heating technique results from improvement in the topochemical modification of layered perovskite oxides. The microwave-assisted method causes a fall in time duration from days to hours/minutes and produces good quality products with high crystallinity. Inorganic-organic-hybrids can be derived easily by the stepwise modification of layered perovskites. These modification techniques involve proton exchange, grafting, intercalation, and exfoliation steps. The microwave synthesized inorganic-organic-hybrid materials are in high demand due to their various interesting properties, potential catalytic, optical, composite, magnetic, and electronic, making them useful for technological applications.

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“…Layered perovskite-type oxides A 2 Ln 2 Ti 3 O 10 (A ¼ Li, Na, K; Ln ¼ La, Nd) are prepared, and their (i) intercalation, (ii) optical properties, and (iii) photocatalytic properties are investigated [18]. Utkina et al demonstrated the instability of K 2 Nd 2 Ti 3 O 10 to hydration and protonation reactions in an aqueous medium with and without a humid atmosphere [19,20].…”

Section: Introductionmentioning

confidence: 99%

Effect of ion (Ag+, N3−) doping on the photocatalytic activity of the Ruddlesden–Popper-type layered perovskite K2Nd2Ti3O10

Ramaswamy

Ravi

Venkataswamy

et al. 2019

Comptes Rendus. Chimie

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In recent years, metalenonmetal codoping has become a promising approach that can be used for effective tailoring of the structureeactivity properties of semiconductors in photocatalysis. In the present study, N-doped K 2 Nd 2 Ti 3 O 10 (KNdTON), Ag-doped K 2 Nd 2 Ti 3 O 10 (AgNdTO), as well as N and Ag codoped K 2 Nd 2 Ti 3 O 10 (AgNdTON) photocatalysts were successfully synthesized by solid-state and ion-exchange methods, using the pre-prepared K 2 Nd 2 Ti 3 O 10 (KNdTO). The parent K 2 Nd 2 Ti 3 O 10 catalyst was synthesized using a facile gel-burning method. The prepared materials are characterized by different techniques such as powder X-ray diffraction (XRD), thermogravimetric (TG) analysis, scanning electron microscopyeenergy dispersive X-ray (SEMeEDX) spectroscopy, transmission electron microscopy (TEM), high-resolution-TEM (HReTEM), oxygenenitrogen ehydrogen (OeNeH) analysis, inductively coupled plasma-optical emission spectroscopy (ICP-OES), Fourier transform-infrared spectroscopy (FT-IR), and diffuse reflectance UV evisible spectroscopy (UVevis DRS). The photocatalytic activity of the obtained catalysts was investigated by studying the degradation of two different pollutants viz., methylene blue (MB) and methyl violet (MV) under visible light irradiation. The shift in the XRD peaks and absorption edges confirms the incorporation of guest ions into the lattice of KNdTO. The photocatalytic degradation of MB and MV is found to be significantly improved via metal mono-doping and codoping. In particular, AgNdTON showed a remarkable increase in photodegradation compared to KNdTON, AgNdTO, and KNdTO. Such an improved photocatalytic activity of AgNdTON is due to the extended visible light absorption and the lower bandgap energy. Furthermore, AgNdTON demonstrated reasonable photocatalytic activity for the MV degradation up to five cycles.

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Water sorption by the perovskite-like layered titanate K2Nd2Ti3O10 in humid atmosphere

Cited by 7 publications

References 9 publications

Layered Titanate H2Nd2Ti3O10 Intercalated With n-Butylamine: A New Highly Efficient Hybrid Photocatalyst for Hydrogen Production From Aqueous Solutions of Alcohols

Layered Titanate H2Nd2Ti3O10 Intercalated With n-Butylamine: A New Highly Efficient Hybrid Photocatalyst for Hydrogen Production From Aqueous Solutions of Alcohols

A Review on the Synthesis and Modification of Functional Inorganic‐Organic‐Hybrid Materials via Microwave‐Assisted Method

Effect of ion (Ag+, N3−) doping on the photocatalytic activity of the Ruddlesden–Popper-type layered perovskite K2Nd2Ti3O10

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