Fabrication of un-doped and magnesium doped TiO2 films by aerosol assisted chemical vapor deposition for dye sensitized solar cells

Shakir, Sehar; Abd-ur-Rehman, Hafiz M.; Yunus, Kamran; Iwamoto, Mitsumasa; Periasamy, Vengadesh

doi:10.1016/j.jallcom.2017.12.165

Cited by 48 publications

(18 citation statements)

References 35 publications

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“…Hiremath et al [71] synthesized MgO-TiO 2 composites with different ratios of Mg to Ti in the range of 0-5. Formation of different phases such as MgTiO 3 , MgO-MgTi 2 O 4 , and MgO-Mg 2 TiO 4 was detected.…”

Section: Doping Of Tio 2 and Its Effect On Adsorptionmentioning

confidence: 99%

Recent Advancements in the Understanding of the Surface Chemistry in TiO2 Photocatalysis

et al. 2020

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Surface chemistry plays a major role in photocatalytic and photoelectrochemical processes taking place with the participation of TiO2. The synthesis methods, surface characterizations, theoretical research methods, and hardware over the last decade generated opportunities for progress in the surface science of this photocatalyst. Very recently, attention was paid to the design of photocatalysts at the nanoscale level by adjusting the types of exposed surfaces and their ratio, the composition and the surface structure of nanoparticles, and that of individual surfaces. The current theoretical methods provide highly detailed designs that can be embodied experimentally. The present review article describes the progress in the surface science of TiO2 and TiO2-based photocatalysts obtained over the last three years. Such aspects including the properties of macro- and nano-scale surfaces, noble-metal-loaded surfaces, doping with Mg and S, intrinsic defects (oxygen vacancies), adsorption, and photoreactions are considered. The main focus of the article is on the anatase phase of TiO2.

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Section: Doping Of Tio 2 and Its Effect On Adsorptionmentioning

confidence: 99%

Recent Advancements in the Understanding of the Surface Chemistry in TiO2 Photocatalysis

et al. 2020

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“…Among these metals, Mg-TiO2 NPs exhibit potent antibacterial activity, because Mg 2+ can be substituted into the Ti 4+ ion owing to their smaller ionic radii. The smaller ionic radii of Mg 2+ ion helpful to enhance the antibacterial efficiency [25]. The efficiency of antibacterial activity also depends on the structure of microbes.…”

Section: Introductionmentioning

confidence: 99%

An Amalgam of Mg-Doped TiO2 Nanoparticles Prepared by Sol–Gel Method for Effective Antimicrobial and Photocatalytic Activity

Nithya¹,

Gopi²,

Bhoopathi³

2021

J Inorg Organomet Polym

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In this study, undoped and Magnesium doped TiO2 nanoparticles (Mg-TiO2 NPs) were successfully synthesized via a simple sol-gel method cost-effectively. The prepared Mg-TiO2NPs were characterized by UV-Vis, FTIR, PL, XRD, FESEM, TEM, and EDAX. UV -Visible Spectroscopy showed that an increase in the optical bandgap concerning the concentration of dopant Mg increases. The bandgap values were found to be 3.57-3.54 eV. FTIR spectra showed that the presence of the characteristic stretching and bending vibrational band of Ti -O bonding at 468 cm-1 and shifts in vibrational bands were observed for Mg-TiO2 NPs. PL spectra of Mg-TiO2 NPs at different concentrations exhibit a strong UV emission band. X-ray diffraction confirmed the formation of the tetragonal anatase phase. The average crystallite size of prepared samples was found to be 22-19 nm. The average crystallite size of Mg-TiO2 NPs decreases with increasing the concentration of dopant Mg. The FESEM and TEM analysis confirmed that the spherical morphology for both TiO2 and Mg-TiO2 NPs. SAED pattern confirms the crystalline nature of prepared samples. EDAX spectra confirm the presence of Ti, O, and Mg and confirm that Mg 2+ ions are present in the TiO2 lattices. The prepared samples were investigated against gram-positive (B. subtilis and S. aureus) and gram-negative (P. eugenia and K. Pneumonia) bacteria. The prepared samples showed potent antibacterial activity against gram-negative bacteria than the gram-positive bacteria. The prepared samples show the excellent photocatalytic degradation for Methylene blue.

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“…Another factor affecting the reduction of FF value is the series resistance, R s of GO72-TiO 2, which is lower compared with the TiO 2 sample. The mesoporous TiO 2 -based photoanode only achieves 2.96% because of its wide band gap energy and high charge recombination rate [25]. GO72 loading could reduce the charge transport resistance between the dye and TiO 2 at the GO72-TiO 2 /N-719 dye/KI electrolyte interface, leading to the enhancement of overall PCE performance [26].…”

Section: Resultsmentioning

confidence: 99%

An investigation of the stirring duration effect on synthesized graphene oxide for dye-sensitized solar cells

et al. 2020

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This study investigates the effects of stirring duration on the synthesis of graphene oxide (GO) using an improved Hummers' method. Various samples are examined under different stirring durations (20, 40, 60, 72, and 80 h). The synthesized GO samples are evaluated through X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy dispersive spectroscopy (EDX), Fourier transform infrared spectroscopy (FTIR), and Raman spectroscopy. The GO sample with 72 h stirring duration (GO72) has the highest dspacing in the XRD results, highest atomic percentage of oxygen in EDX (49.57%), highest intensity of oxygen functional group in FTIR spectra, and highest intensity ratio in Raman analysis (I D /I G = 0.756). Results show that GO72 with continuous stirring has the highest degree of oxidation among other samples. Electrochemical impedance spectroscopy analysis shows that GO72-titanium dioxide (TiO 2) exhibits smaller charge transfer resistance and higher electron lifetime compared with the TiO 2-based photoanode. The GO72 sample incorporating TiO 2 nanocomposites achieves 6.25% photoconversion efficiency, indicating an increase of more than twice than that of the mesoporous TiO 2 sample. This condition is fully attributed to the efficient absorption rate of nanocomposites and the reduction of the recombination rate of TiO 2 by GO in dye-sensitized solar cells.

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Fabrication of un-doped and magnesium doped TiO2 films by aerosol assisted chemical vapor deposition for dye sensitized solar cells

Cited by 48 publications

References 35 publications

Recent Advancements in the Understanding of the Surface Chemistry in TiO2 Photocatalysis

Recent Advancements in the Understanding of the Surface Chemistry in TiO2 Photocatalysis

An Amalgam of Mg-Doped TiO2 Nanoparticles Prepared by Sol–Gel Method for Effective Antimicrobial and Photocatalytic Activity

An investigation of the stirring duration effect on synthesized graphene oxide for dye-sensitized solar cells

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