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Maslova MV, Ivanenko VI, Gerasimova LG, Nikolaev AI. New Approaches to the Synthesis of Titanium Phosphates from Crystalline Precursors. DOKLADY CHEMISTRY 2021. [DOI: 10.1134/s0012500821080024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Chirra S, Siliveri S, Gangalla R, Goskula S, Gujjula SR, Adepu AK, Anumula R, Sivasoorian SS, Wang LF, Narayanan V. Synthesis of new multivalent metal ion functionalized mesoporous silica and studies of their enhanced antimicrobial and cytotoxicity activities. J Mater Chem B 2019; 7:7235-7245. [PMID: 31664291 DOI: 10.1039/c9tb01736d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the present study, we have reported the synthesis of a transition metal (Me = Ti, V, and Pd) incorporated into MCM-41 mesoporous molecular sieves (Si/Me = 20) synthesized by the sol-gel method. Their physicochemical properties were studied in detail by standard techniques like low angle powder X-ray diffraction (XRD), scanning electron microscopy-energy-dispersive X-ray spectroscopy (SEM-EDXS), transmission electron microscopy (TEM), N2 adsorption/desorption studies, and thermogravimetric-differential thermal (TG-DTA) analysis and spectral studies like Fourier transform infrared spectroscopic analysis (FT-IR), diffuse reflectance ultraviolet-visible spectroscopic analysis (UV-Visible-DRS), and X-ray photoelectron spectroscopy (XPS). The XRD patterns prove that the material's phase identity is the same irrespective of metal incorporation. SEM displayed the uniform shape and size of the nanoparticles. The presence of elements such as Ti, V, Pd, Si and O in respective materials is revealed using the EDXS analysis. Around 30% weight loss arose upon calcination from room temperature to 800 °C. BET surface area analysis presented that the parent materials have a high surface area (1024 m2 g-1) which was reduced upon metal incorporation. FT-IR analysis exhibited the framework vibrations of the synthesised materials. UV-Visible-DRS analysis indicated the presence of tetrahedrally coordinated transition metal ions. The multivalent-metal-ion-functionalized mesoporous materials showed significant enhancement in potent antimicrobial and anticancer activity. The antimicrobial activity is because of its low lipophilicity, which no longer allows the materials to enter via the lipid membrane. Thus, the new materials neither obstruct the metal-binding sites nor inhibit the growth of microbe enzymes. Further, the results show that the transition metal ion-containing mesoporous materials possessing good anticancer activity arising from their excessive surface area to volume ratio provided appropriate association with a tumour cell due to the direct penetration of mesoporous materials into the cell wall, causing membrane damage and cell death.
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Affiliation(s)
- Suman Chirra
- Department of Chemistry, National Institute of Technology, Warangal 506 004, Telangana, India.
| | - Suresh Siliveri
- Department of Chemistry, National Institute of Technology, Warangal 506 004, Telangana, India.
| | - Ravi Gangalla
- Department of Microbiology, Kakatiya University, Warangal 506 009, Telangana, India
| | - Srinath Goskula
- Department of Chemistry, National Institute of Technology, Warangal 506 004, Telangana, India.
| | - Sripal Reddy Gujjula
- Department of Chemistry, National Institute of Technology, Warangal 506 004, Telangana, India.
| | - Ajay Kumar Adepu
- Inorganic & Physical Chemistry Division, CSIR - Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Rajini Anumula
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100090, China
| | - Siva Sankari Sivasoorian
- Department of Medicinal & Applied Chemistry, College of Life Science, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Li-Fang Wang
- Department of Medicinal & Applied Chemistry, College of Life Science, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Venkatathri Narayanan
- Department of Chemistry, National Institute of Technology, Warangal 506 004, Telangana, India.
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Gnanamoorthy G, Dhanasekaran T, Munusamy S, Padmanaban A, Stephen A, Narayanan V. Photocatalytic and biological properties of porous titanium aminophosphate. APPLIED NANOSCIENCE 2018. [DOI: 10.1007/s13204-018-0855-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Rajini A, Suman C, Ajay Kumar A, Suresh S, Venkatathri N. Titanium aminophosphates as efficient, economical, and recyclable catalysts for the synthesis of xanthenediones. SYNTHETIC COMMUN 2016. [DOI: 10.1080/00397911.2016.1220578] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- A. Rajini
- Department of Chemistry, National Institute of Technology, Warangal, Telangana, India
| | - C. Suman
- Department of Chemistry, National Institute of Technology, Warangal, Telangana, India
| | - A. Ajay Kumar
- Department of Chemistry, National Institute of Technology, Warangal, Telangana, India
| | - S. Suresh
- Department of Chemistry, National Institute of Technology, Warangal, Telangana, India
| | - N. Venkatathri
- Department of Chemistry, National Institute of Technology, Warangal, Telangana, India
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Rajini A, Adepu AK, Chirra S, Siliveri S, Venkatathri N. Correction: Titanium aminophosphates: synthesis, characterization and crystal violet dye degradation studies. RSC Adv 2016. [DOI: 10.1039/c6ra90123a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Correction for ‘Titanium aminophosphates: synthesis, characterization and crystal violet dye degradation studies’ by Anumula Rajini et al., RSC Adv., 2016, 6, 507–514.
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Affiliation(s)
- Anumula Rajini
- Department of Chemistry
- National Institute of Technology
- Warangal 506 004
- India
| | - Ajay Kumar Adepu
- Department of Chemistry
- National Institute of Technology
- Warangal 506 004
- India
| | - Suman Chirra
- Department of Chemistry
- National Institute of Technology
- Warangal 506 004
- India
| | - Suresh Siliveri
- Department of Chemistry
- National Institute of Technology
- Warangal 506 004
- India
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Rajini A, Nookaraju M, Chirra S, Adepu AK, Venkatathri N. Correction: Titanium aminophosphates: synthesis, characterization and orange G dye degradation studies. RSC Adv 2016. [DOI: 10.1039/c6ra90122k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Correction for ‘Titanium aminophosphates: synthesis, characterization and orange G dye degradation studies’ by Anumula Rajini et al., RSC Adv., 2015, 5, 106509–106518.
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Affiliation(s)
- Anumula Rajini
- Department of Chemistry
- National Institute of Technology
- Warangal 506 004
- India
| | - Muralasetti Nookaraju
- Department of Chemistry
- Anil Neerukonda Institute of Technology and Sciences
- Vishakapatnam – 531162
- India
| | - Suman Chirra
- Department of Chemistry
- National Institute of Technology
- Warangal 506 004
- India
| | - Ajay Kumar Adepu
- Department of Chemistry
- National Institute of Technology
- Warangal 506 004
- India
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