Visible light active photocatalyst: Hydrothermal green synthesized TiO 2 NPs for degradation of picric acid

Hariharan, D.; Christy, A. Jegatha; Mayandi, J.; Nehru, L.C.

doi:10.1016/j.matlet.2018.03.109

Cited by 48 publications

(17 citation statements)

References 17 publications

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“…Green hydrothermal synthesis mediated by plant extracts were also used for the production of TiO 2 NPs. Recently, Hariharan et al [ 134 ] synthesized TiO 2 NPs using Aloe vera gel and deionized water as starting materials (autoclave treatment at 180 °C for 4 h). Sample characterization showed TiO 2 anatase NPs with good crystalline quality and sizes ranging from 6 to 13 nm.…”

Section: Green Synthesis Methods Of Tio 2 and Zno Nanostructuresmentioning

confidence: 99%

“…More recently, in addition to the usual applications in dye photodegradation, TiO 2 NPs synthesized by green approaches have also been used to remove Cr 6+ ions and chemical oxygen demand of real tannery effluents (efficiency of 82.26% and 76.48% under solar illumination) [ 95 ], the photoreduction of Cr 6+ ions (79.6% under UV irradiation) [ 208 ], removal of Pb from explosive industrial wastewater (82.53% removal after a 12 h treatment with UV light) [ 108 ], removal of total organic carbon and total nitrogen in refinery wastewater (efficiency of 32% and 67% under UV-C lighting, respectively) [ 209 ], and also organic compounds such as picric acid (100% under visible light at 120 min) [ 134 ], ornidazole antibiotic (67% efficiency under UV illumination after 100 min) [ 210 ], and ciprofloxacin (CIP) antibiotic (CIP removal of 90% after 60 min under UV-Vis illumination) [ 211 ]. The photodegradation of phenol (80% and 100% under irradiation with visible and UV light, respectively) [ 212 ], anthracene (96% efficiency a 4 h treatment with UV illumination) [ 213 ], photocatalytic generation of H 2 (360 µmol/g under UV-Vis irradiation) [ 214 ], and photocatalytic treatment against Enterococcus faecalis bacteria (99.2% efficiency under visible illumination) [ 118 ] was also achieved by using ZnO nanostructures produced by green synthesis.…”

Section: Applications Of Tio 2 and Zno Nanostructuresmentioning

confidence: 99%

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Green Synthesis and Applications of ZnO and TiO2 Nanostructures

et al. 2021

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Over the last two decades, oxide nanostructures have been continuously evaluated and used in many technological applications. The advancement of the controlled synthesis approach to design desired morphology is a fundamental key to the discipline of material science and nanotechnology. These nanostructures can be prepared via different physical and chemical methods; however, a green and ecofriendly synthesis approach is a promising way to produce these nanostructures with desired properties with less risk of hazardous chemicals. In this regard, ZnO and TiO2 nanostructures are prominent candidates for various applications. Moreover, they are more efficient, non-toxic, and cost-effective. This review mainly focuses on the recent state-of-the-art advancements in the green synthesis approach for ZnO and TiO2 nanostructures and their applications. The first section summarizes the green synthesis approach to synthesize ZnO and TiO2 nanostructures via different routes such as solvothermal, hydrothermal, co-precipitation, and sol-gel using biological systems that are based on the principles of green chemistry. The second section demonstrates the application of ZnO and TiO2 nanostructures. The review also discusses the problems and future perspectives of green synthesis methods and the related issues posed and overlooked by the scientific community on the green approach to nanostructure oxides.

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Section: Green Synthesis Methods Of Tio 2 and Zno Nanostructuresmentioning

confidence: 99%

Section: Applications Of Tio 2 and Zno Nanostructuresmentioning

confidence: 99%

Green Synthesis and Applications of ZnO and TiO2 Nanostructures

et al. 2021

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“…The authors [56] synthesized TiO2 nanoparticles by the hydrothermal method using Aloe Vera gel for use as a photocatalyst in the degradation of picric acid. Aloe Vera was peeled and the gel was washed seven times under running water.…”

Section: «Green» Methodsmentioning

confidence: 99%

Methods of Titanium Dioxide Synthesis (Review)

Mironyuk

Soltys

Tatarchuk

et al. 2020

Phys. Chem. Solid St.

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TiO2-based nanomaterials are attracting much attention in many areas, such as photocatalysis, photoelectricity, probing, electrochromism, photochromism, etc. They are widely used in paints, polymers, sunscreens, and toothpaste. There are various ways of synthesis that affect the size, shape, and crystallinity of TiO2 nanoparticles. The main methods of obtaining titanium dioxide (with the structure of anatase, rutile or brookite) in the form of spheres, rods, fibers, and tubes include: sol-gel technology, hydrothermal and solvothermal methods, microwave method involving high-frequency electromagnetic waves, template method, electrodeposition, a sonochemical method using ultrasound, chemical and physical vapor deposition, "green" methods, etc. This literature review presents modern scientific results on the production of TiO2 nanoparticles by various methods.

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“…Among the group of metal oxides, titanium dioxide nanoparticles (TiO 2 ) NPs have proved to be effective materials for various applications. The properties such as surface absorption and light absorption of TiO 2 make it an important n‐type semiconductor metal oxide (Hariharan, Jegatha Christy, Mayandi, & Nehru, 2018; Patidar & Jain, 2017; Subhapriya & Gomathipriya, 2018). The TiO 2 is one of the most widely used and studied material due to its easy handling, enhanced stability, and low cost (Fathy & Hamad, 2016).…”

Section: Introductionmentioning

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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Visible light active photocatalyst: Hydrothermal green synthesized TiO 2 NPs for degradation of picric acid

Cited by 48 publications

References 17 publications

Green Synthesis and Applications of ZnO and TiO2 Nanostructures

Green Synthesis and Applications of ZnO and TiO2 Nanostructures

Methods of Titanium Dioxide Synthesis (Review)

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

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