Effect of heating on the structural and optical properties of TiO2 nanoparticles: antibacterial activity

Haq, Sirajul; Rehman, Wajid; Waseem, Muhammad; Javed, Rehan; Mahfooz-ur-Rehman,; Shahid, Muhammad

doi:10.1007/s13204-018-0647-6

Cited by 50 publications

(20 citation statements)

References 33 publications

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“…During the degradation of the organic pollutant, the removal efficiency became low signifying the importance of TiO 2 phase in its application. A recent contribution made by Haq et al (2018) submitted that decrease in the surface area and pore volume was observed as the temperature of calcination increased and opined that these were as a result of rearrangement and growth of TiO 2 crystallites.…”

Section: Effect Of Calcinationmentioning

confidence: 99%

Application of TiO2 and ZnO nanoparticles immobilized on clay in wastewater treatment: a review

et al. 2020

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Increase in industrial and anthropogenic activities leads to a decline in water quality. This necessitates the need for the removal of contaminants from industrial and domestic wastewater. Clay minerals are naturally abundant and non-toxic materials that found to be useful for remediation of emerging contaminants from wastewater. This review paper presents an insight into clay, the simplest material (in solgel techniques) for the synthesis of TiO 2 and ZnO, mechanisms of their reactions, analytical techniques used for characterizations, and their nanocomposites for wastewater treatment. Nanomaterials, such as nanoclay, titanium, and zinc oxide, have offered the opportunities of sequestering variety of pollutants in wastewater. TiO 2 and ZnO anchored on clay have been found to be good promising sequesters and have been explored for wastewater remediation via nanotechnology. This water treatment method includes adsorption/absorption, photocatalysis, and microbial disinfection. These nanocomposites provide more active surface sites and reduce the agglomeration of the nanoparticles, but leaching has been their shortcomings. To overcome this, the filtration technique may become significant for the removal and avoidance of fouling of wastewater. This can be achieved through the fabrication of nano-based filters using the nanocomposites.

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Section: Effect Of Calcinationmentioning

confidence: 99%

Application of TiO2 and ZnO nanoparticles immobilized on clay in wastewater treatment: a review

et al. 2020

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“…The band gap energies were calculated for Zn2SnO4 NC from Tauc plots by joining sharp rising portion with horizontal axis of the (hvlnT) 2 against hv is 3.12 eV [18,19]. The band gap energy for Zn2SnO4 NC is divergent from that of SnO2 NPs and ZnO NPs suggesting that the production of new species and all the deduced band gap energies are in accordance with the reported data [20][21][22][23][24][25]. In the FTIR spectrum of Zn2SnO4 NC (Fig.…”

Section: Physicochemical Studymentioning

confidence: 53%

Ficus Carica Mediated Synthesis of Simulated Solar Light Driven Nano-sized Zinc Stannate Photocatalyst for the Degradation of Methylene Blue

Naqeeb

Haq

Ehsan

et al. 2021

Preprint

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The synthesis of zinc stannate nanocomposite (Zn2SnO4 NC) was carried out using an environment friendly process that included the use of Ficus carica (F. carica) leaves extract as a capping and reducing agent. X-ray diffraction (XRD) analysis was used to analyze the structural and crystallographic parameters, and the crystallite was discovered to have cubic geometry. The elemental composition of the studied Zn2SnO4 NC was investigated using energy dispersive X-ray (EDX), which revealed that it was extremely pure. The band gap (3.12 eV) was calculated through Tauc plot using diffuse reflectance (DRS) data where the functional groups were explored through Fourier transform infrared (FTIR) spectroscopy. Prior to the photocatalytic reaction, some preliminary experiments were performed, which proposed that pH 9 is suitable for the mineralization of methylene blue (MB) (10 ppm) in the presence of 20 mg of Zn2SnO4 NC and simulated solar light. The 96 % of MB was degraded in 80 min with the degradation rate of 0.038 min-1.

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“…The results show that almost linear increase in the crystallite size was occurred with increasing calcination temperature as shown in inset in Figure 1. The increase in crystallite size with increasing heating temperature can be attributed to thermally promoted crystallite growth (Haq, Rehman, Waseem, Javed, et al, 2018).

D = \frac{K normalλ}{BCosθ}

…”

Section: Resultsmentioning

confidence: 99%

Structural and biological investigation of biogenically synthesized titanium dioxide nanoparticles: Calcination and characterization

Hafeez

Shamim

Ehsan

et al. 2021

Microscopy Res & Technique

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The antimicrobial drug resistance is increasing with the passage of time due to wide and improper use of broad spectrum drugs and the demand of the new drug increases day by day. The present study was planned to encounter this problem by synthesizing titanium dioxide nanoparticles (TiO2 NPs) by an eco‐friendly route using Cannabis sativa leaves extract. The synthesized TiO2 NPs were calcined at 100, 300, 600, and 900°C in a muffle furnace. The crystallographic parameters were studied by X‐ray diffraction and the phase transition occurred above 600°C. The surface morphology of the synthesized samples was studied by transmission electron microscopy (TEM), and scanning electron microscopy (SEM) and the particle size was measured through the ImageJ software. The elemental composition and purity of all the samples were studied by performing energy dispersive X‐ray (EDX). All the synthesized TiO2 NPs were tested for their antimicrobial effect against Gram‐positive and Gram‐negative bacteria using the agar well diffusion method. The activity was found higher against Gram‐negative bacteria and compared to Gram‐positive bacteria.

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Effect of heating on the structural and optical properties of TiO2 nanoparticles: antibacterial activity

Cited by 50 publications

References 33 publications

Application of TiO2 and ZnO nanoparticles immobilized on clay in wastewater treatment: a review

Application of TiO2 and ZnO nanoparticles immobilized on clay in wastewater treatment: a review

Ficus Carica Mediated Synthesis of Simulated Solar Light Driven Nano-sized Zinc Stannate Photocatalyst for the Degradation of Methylene Blue

Structural and biological investigation of biogenically synthesized titanium dioxide nanoparticles: Calcination and characterization

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