Solvothermal synthesis of a layered titanate nanosheets and its photocatalytic activity: Effect of Ag doping

Rahut, Sibsankar; Panda, Ramdayal; Basu, Jayanta Kumar

doi:10.1016/j.jphotochem.2017.03.017

Cited by 20 publications

(5 citation statements)

References 43 publications

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Section: Application Of Layered Titanatementioning

confidence: 99%

“…When the electrons on t 2g and e g are in an unsaturated state, it will affect the properties of the compound. The introduction of new ions into layered titanates through doping and other methods may effectively change its optical and electronic properties …”

Section: Structure and Properties Of Layered Titanatementioning

confidence: 99%

“…The band structure of titanate nanosheets also changed greatly after silver doping; the band gap was reduced, which made the sample sensitive to visible light. The silver-doped titanate nanosheets can photodegrade methyl orange and phenol under visible light irradiation, thereby indicating good photocatalytic performance (Figure b).…”

Section: Application Of Layered Titanatementioning

confidence: 99%

“…The raw materials for synthesizing layered titanate are relatively cheap and easy to obtain. Its preparation process is simple, and the reaction process can be adjusted by changing the reaction conditions, thereby realizing the preparation with low energy consumption . In addition, layered titanate has good swelling ability, and its surface can be modified by cation exchange and grafting .…”

Section: Introductionmentioning

confidence: 99%

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Structure, Properties, Preparation, and Application of Layered Titanates

Liu,

Miao,

Yao

et al. 2023

Inorg. Chem.

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As a typical cation-exchangeable layered compound, layered titanate has a unique open layered structure. Its excellent physical and chemical properties allow its wide use in the energy, environmental protection, electronics, biology, and other fields. This paper reviews the recent progress in the research on the structure, synthesis, properties, and application of layered titanates. Various reactivities, as well as the advantages and disadvantages, of different synthetic methods are discussed. The reaction mechanism and influencing factors of the ion exchange reaction, intercalation reaction, and exfoliation reaction are analyzed. The latest research progress on layered titanates and their modified products in the fields of photocatalysis, adsorption, electrochemistry, and other applications is summarized. Finally, the future development of layered titanate and its exfoliated product two-dimensional nanosheets is proposed.

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Section: Application Of Layered Titanatementioning

confidence: 99%

Section: Structure and Properties Of Layered Titanatementioning

confidence: 99%

Section: Application Of Layered Titanatementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Structure, Properties, Preparation, and Application of Layered Titanates

Liu,

Miao,

Yao

et al. 2023

Inorg. Chem.

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“…[14,15] Titanate is another well-studied photocatalyst for organic pollutant degradation. [16][17][18][19][20] Wastewater treatment efficiency depended on the activity of photocatalyst, and modification of the materials could lead to an improved activity or to meet special requirements of a wastewater treatment process. Some different types of materials were used to prepare composite materials with greatly enhanced activities.…”

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confidence: 99%

Effects of ZSM‐5 Treatment on the Properties of Gd₂Ti₂O₇‐nHZSM‐5 Composites for RBR‐X3B Degradation

Jiao

Zhang

2021

Part & Part Syst Charact

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an effective method to improve light absorption property of some kinds of materials, [12,13] and rare earth doping into titania could significantly enhanced the efficiency on organic pollutant degradation. [14,15] Titanate is another well-studied photocatalyst for organic pollutant degradation. [16][17][18][19][20] Wastewater treatment efficiency depended on the activity of photocatalyst, and modification of the materials could lead to an improved activity or to meet special requirements of a wastewater treatment process. Some different types of materials were used to prepare composite materials with greatly enhanced activities. [21][22][23] Photocatalysts were also prepared in the supported forms for a better waterphotocatalyst separation after treatment. [24][25][26] However, the supported photocatalyst in a flat surface usually had weaker activity than powders. Alternatively, photocatalyst was supported on porous zeolites. The obtained powders could be easily separated from the treated water, and a very interesting finding was an improved activity of photocatalyst in the supported form. HZSM-5 was used to prepare TiO 2 -zeolite and titanatezeolite composites in our previous works. [27][28][29] Degradation efficiencies of the photocatalysts were significantly enhanced after supporting.The properties of titanate-zeolite composite apparently depended on the properties of zeolite. Since HZSM-5 zeolite was prepared from Na-type ZSM-5 in a hydrochloric acid solution, the properties of HZSM-5 depended on hydrochloric acid solution concentration. In this work, Gd 2 Ti 2 O 7 -nHZSM-5 composite was prepared to study the influences of hydrochloric acid solution concentration on the characterization results and on the performance of Gd 2 Ti 2 O 7 -nHZSM-5 composite. Results and Discussions Surface Images of GTO and GTO-nZThe surface morphologies of GTO and GTO-nZ composites are presented in Figure 1. The sol-gel synthesized GTO had an irregular shape, and the particle size coluld be larger than 10 µm. Some small particles were along with the big ones because the materials were ground after calcination. Gd 2 Ti 2 O 7 -nHZSM-5 (GTO-nZ) composites are prepared using HZSM-5 zeolite via a sol-gel route. The hydrochloric acid concentration in zeolite treatment can affect the properties of GTO-nZ composites. GTO has a typical pyrochlore phase Gd 2 Ti 2 O 7 , and HZSM-5 zeolite does not have noticeable influences on GTO crystal formation. The bandgap energies are 3.77, 3.73, 3.67, 3.65, and 3.64 eV for GTO-nZ composites when hydrochloric acid concentration is 0, 0.2, 0.3, 0.5, and 1 mol L −1 , respectively. The isotherms of GTO-nZ composites are classified as IUPAC type IV of mesoporous material, while the adsorbed nitrogen quantities on GTO-nZ composites are much larger than the nitrogen quantity on GTO. The small amount of HZSM-5 zeolite can improve the porosity of GTO in the composites, and the surface area of GTO in the composites is significantly enlarged. The hydrochloric acid concentration has an apparent influence on the ...

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The influences of molecular weight of polyethylene glycol on porous Sm2Ti2O7 for degradation of reactive Brilliant Red X-3B

Wang²,

Zhang³

et al. 2022

J Sol-Gel Sci Technol

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Solvothermal synthesis of a layered titanate nanosheets and its photocatalytic activity: Effect of Ag doping

Cited by 20 publications

References 43 publications

Structure, Properties, Preparation, and Application of Layered Titanates

Structure, Properties, Preparation, and Application of Layered Titanates

Effects of ZSM‐5 Treatment on the Properties of Gd₂Ti₂O₇‐nHZSM‐5 Composites for RBR‐X3B Degradation

The influences of molecular weight of polyethylene glycol on porous Sm2Ti2O7 for degradation of reactive Brilliant Red X-3B

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Solvothermal synthesis of a layered titanate nanosheets and its photocatalytic activity: Effect of Ag doping

Cited by 20 publications

References 43 publications

Structure, Properties, Preparation, and Application of Layered Titanates

Structure, Properties, Preparation, and Application of Layered Titanates

Effects of ZSM‐5 Treatment on the Properties of Gd2Ti2O7‐nHZSM‐5 Composites for RBR‐X3B Degradation

The influences of molecular weight of polyethylene glycol on porous Sm2Ti2O7 for degradation of reactive Brilliant Red X-3B

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Effects of ZSM‐5 Treatment on the Properties of Gd₂Ti₂O₇‐nHZSM‐5 Composites for RBR‐X3B Degradation