Application of TiO<sub>2</sub> nanoparticles for eco-friendly biodiesel production from waste olive oil

Mihankhah, Taraneh; Delnavaz, Mohammad; Khaligh, Nader Ghaffari

doi:10.1080/15435075.2018.1423975

Cited by 29 publications

(7 citation statements)

References 18 publications

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“…[53] In the electrodeposition process, an electric current is applied between am etal electrode (counter electrode) and the substrate (working electrode) through an electrolytic solution containing metal ions. [53] In the electrodeposition process, an electric current is applied between am etal electrode (counter electrode) and the substrate (working electrode) through an electrolytic solution containing metal ions.…”

Section: Electrodeposition Techniquementioning

confidence: 99%

Recent Progress on Titanium Dioxide Nanomaterials for Photocatalytic Applications

et al. 2018

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Environmental and energy problems have drawn much attention owing to rapid population growth and accelerated economic development. For instance, photocatalysis, "a green technology", plays an important role in solar-energy conversion owing to its potential to solve energy and environmental problems. Recently, many efforts have been devoted to improving visible-light photocatalytic activity by using titanium dioxide as a photocatalyst as a result of its wide range of applications in the energy and environment fields. However, fast charge recombination and an absorption edge in the UV range limit the photocatalytic efficiency of TiO under visible-light irradiation. Many investigations have been undertaken to overcome the limitations of TiO and, therefore, to enhance its photocatalytic activity under visible light. The present literature review focuses on different strategies used to promote the separation efficiency of electron-hole pairs and to shift the absorption edge of TiO to the visible region. Current synthesis techniques used to elaborate several nanostructures of TiO -based materials, recent progress in enhancing visible photocatalytic activity, and different photocatalysis applications will be discussed. On the basis of the studies reported in the literature, we believe that this review will help in the development of new strategies to improve the visible-light photocatalytic performance of TiO -based materials further.

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Section: Electrodeposition Techniquementioning

confidence: 99%

Recent Progress on Titanium Dioxide Nanomaterials for Photocatalytic Applications

et al. 2018

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“…Two peaks at 2.30 ppm (CH 2 COOCH 3 ) and 3.66 ppm (CH 2 COOCH 3 ) were used to quantify the reaction progress and the calculation of biodiesel conversions (Figure S3). 10,11 The purity of biodiesel was evaluated by the presence and integration of the peaks at 5.15 and 4.23–4.19 ppm, assigned to the glycerol protons, in the 1 H NMR spectra. The 1 H NMR analyses showed that biodiesel purity was at a range of 99.95%–100%.…”

Section: Resultsmentioning

confidence: 99%

“…In pursuit of our studies to develop environmentally friendly production of biodiesel 10,11 and TNT applications, 12,13 herein, the synergistic effect of TNTs and solar energy was demonstrated to achieve a low‐cost, energy‐efficient, and sustainable process for the biodiesel production from waste cooking and frying olive oil. In optimal experimental conditions namely stirring a volume ratio of methanol to WCOO of 8.0–1.0 during 4 h at 60°C, a conversion 91.2 ± 0.7% was observed in the current protocol (Scheme 1).…”

Section: Introductionmentioning

confidence: 99%

Solar energy and TiO₂ nanotubes: Biodiesel production from waste cooking olive oil

Khaligh

Mihankhah

Shahnavaz

et al. 2020

Env Prog and Sustain Energy

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TiO2 nanotubes have been used as practical heterogeneous nano‐catalyst for biodiesel production from waste cooking olive oil using solar energy. Several critical parameters namely the reaction time and temperature and volume ratio of methanol to oil were optimized to obtain high‐quality biodiesel fuel. By using an optimum volume ratio of methanol to WCOO of 8.0:1.0 at 60°C within 4 h, the highest conversion of 91.2 ± 0.7% was obtained. Solar energy was applied to heat the reaction vessel by parabolic trough reflectors, and photovoltaic panels were employed to power a small electric motor for the stirring of the reaction mixture. After completion of the reaction, the nanocatalyst was separated by a centrifuge. The catalyst could be reused up to four times with a 3% reduction in yield of the final product. The variation of five pollutant emissions for a blend of biodiesel: diesel (20:80 vol/vol %) showed a net decrease of the total hydrocarbons, carbon monoxide, and carbon dioxide emissions compared to the pure diesel fuel.

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“…Mihankhah et al. 61 studied an eco‐friendly synthetic pathway of TiO 2 nanoparticles and utilized them in transesterification of waste olive oil. More than 91.2 % conversion was obtained at 120 °C within 4 h.…”

Section: Metal Oxide Nanoparticles and Their Composite Materials As N...mentioning

confidence: 99%

“…The conversion was found to be 96.8 % at 200 °C, with a molar ratio of 1:30 and a catalyst content of 5.0 wt %. Mihankhah et al [61] studied an eco-friendly synthetic pathway of TiO 2 nanoparticles and utilized them in transesterification of waste olive oil. More than 91.2 % conversion was obtained at 120 °C within 4 h.…”

Section: Pure Metal Oxide-based Nanocatalystsmentioning

confidence: 99%

Advances in Metal Oxide‐based Nanocatalysts for Biodiesel Production: A Review

et al. 2023

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The demand for renewable fuels has risen as a result of increasing human population, urbanization, industrialization, and transport systems. Biodiesel production using metal oxide-based heterogeneous catalysts is an efficient, sustainable, and environmentally friendly approach. Because of their recovery, reusability, and consistency, heterogeneous catalysts may be preferable to homogeneous catalysts. Since the last few decades, the metal oxides of alkali earth and transition metals and their composite materials have been used as nanocatalysts in the production of biodiesel fuel. Utilization of inorganic metal oxide nanoparticles (MONPs) and their composite materials in producing biodiesel has gained increased attention because of their advanced physical and chemical characteristics. In this review, the applicability of metal oxides and their nanocomposite-based catalysts in biodiesel production, transesterification reactions with nanocatalytic systems, and the important parameters that affect these reactions are discussed.

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Application of TiO₂ nanoparticles for eco-friendly biodiesel production from waste olive oil

Cited by 29 publications

References 18 publications

Recent Progress on Titanium Dioxide Nanomaterials for Photocatalytic Applications

Recent Progress on Titanium Dioxide Nanomaterials for Photocatalytic Applications

Solar energy and TiO₂ nanotubes: Biodiesel production from waste cooking olive oil

Advances in Metal Oxide‐based Nanocatalysts for Biodiesel Production: A Review

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Application of TiO2 nanoparticles for eco-friendly biodiesel production from waste olive oil

Cited by 29 publications

References 18 publications

Recent Progress on Titanium Dioxide Nanomaterials for Photocatalytic Applications

Recent Progress on Titanium Dioxide Nanomaterials for Photocatalytic Applications

Solar energy and TiO2 nanotubes: Biodiesel production from waste cooking olive oil

Advances in Metal Oxide‐based Nanocatalysts for Biodiesel Production: A Review

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Application of TiO₂ nanoparticles for eco-friendly biodiesel production from waste olive oil

Solar energy and TiO₂ nanotubes: Biodiesel production from waste cooking olive oil