Ni-, Pt- and (Ni/Pt)-doped TiO2 nanophotocatalysts: A smart approach for sustainable degradation of Rhodamine B dye

Pol, Roberto; Guerrero, Miguel; García-Lecina, Eva; Altube, A.; Rossinyol, Emma; Garroni, Sebastiano; Baró, María Dolors; Pons, Josefina; Sort, Jordi; Pellicer, Eva

doi:10.1016/j.apcatb.2015.08.006

Cited by 90 publications

(25 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Photochemistry is a highly promising approach as it uses solar light (it must be noted that solar light consists of ~5% UV, ~43% visible, and ~52 % infra-red) as a renewable, abundant, and clean energy source [14][15][16]. In this sense, semiconducting materials, such as ZnO, TiO2, V2O5, and Nb2O5, have been recently proposed as efficient photocatalysts for the photodegradation of persistent organic pollutants [17][18][19]. Among these photocatalysts, ZnO is one of the most fascinating semiconductors as a result of its chemical stability, low toxicity, piezoelectricity, light conversion efficiency, antibacterial and antifungal activity, and high activity with regard to the production of reactive oxygen species (ROS) under UV light [19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Highly active ZnO-based biomimetic fern-like microleaves for photocatalytic water decontamination using sunlight

Serrà

Zhang

Sepúlveda

et al. 2019

Applied Catalysis B: Environmental

110

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Highly active ZnO-based biomimetic fern-like microleaves for photocatalytic water decontamination using sunlight

Serrà

Zhang

Sepúlveda

et al. 2019

Applied Catalysis B: Environmental

110

View full text Add to dashboard Cite

show abstract

“…The stability of the Pt/SrTiO 3 nanoparticles for the photocatalytic oxidation of cyclohexane was investigated using the 1.5 wt% Pt/SrTiO 3 nanoparticles and the results showed that 1.5 wt% Pt/SrTiO 3 nanoparticles had a high photocatalytic stability after being used for five successive times, which is a common practice to verify the Pt/SrTiO 3 nanoparticles stability. 35 Accordingly, the enhancement of the catalytic activity of the doped Pt/SrTiO 3 photocatalyst compared to the prepared SrTiO 3 photocatalyst could be due to many reasons. First, the prevention of the recombination of the electron-hole pair by Pt atoms in the Pt/SrTiO 3 photocatalyst, as the doped metal atoms often act as electron traps, 36 second; the decrease of band gap energy that allows absorption of photons in the visible region, and finally the promotion of the interfacial electron transfer process as the Pt nanoparticles lead to formation of Schottky barriers on the SrTiO 3 , and work as electron traps, which facilitate the electron-hole separation.…”

Section: Photocatalytic Oxidation Of Cyclohexanementioning

confidence: 99%

Enhancement of visible light irradiation photocatalytic activity of $$\hbox {SrTiO}_{3}$$ SrTiO 3 nanoparticles by Pt doping for oxidation of cyclohexane

Salam

Aljohani

2017

J Chem Sci

View full text Add to dashboard Cite

In this research, strontium titanate (SrTiO 3) nanoparticles were synthesised using an ultrasonic method, then were doped with Pt using a photo-assisted deposition method to form Pt/SrTiO 3 nanoparticles. SrTiO 3 and Pt/SrTiO 3 nanoparticles were characterized by XRD, XPS, TEM, BET surface area UV-Vis and PL techniques in order to explore their chemical and physical properties. The visible light irradiation photocatalytic performances of SrTiO 3 nanoparticles and Pt/SrTiO 3 nanoparticles for photocatalytic oxidation of cyclohexane was investigated, and the results revealed that platinum was doped onto the SrTiO 3 nanoparticles surfaces as metallic platinum, and the weight percent of doped platinum greatly affected the band gap, and the 1.5 wt% Pt/SrTiO 3 nanoparticles showed the highest photocatalytic activity due to the low band gap. The stability of the Pt/SrTiO 3 nanoparticles for the photocatalytic oxidation of cyclohexane was examined and the results revealed that the Pt/SrTiO 3 nanoparticles could be used five times without losing their efficiency.

show abstract

“…ZnO has been frequently considered as an alternative to TiO 2 for photo-catalytic applications, since it shows similar activity in certain conditions [164] . In general, higher photo-catalytic reaction rates were obtained with ZnO samples than with TiO 2 Degussa P25, in spite of the low surface area of the ZnO samples.…”

Section: The New Promising Semiconductors In Photo-degradation Of Dyesmentioning

confidence: 99%

“…The increase in activity in these coupled systems is ascribed to charge separation at the interface, as it has been described for other semiconductor couples [167] . Similar to TiO 2 , another limitation of ZnO is its wide band gap (3.2 eV), which restricts light absorption to the UV region [164] . A possible strategy to extend ZnO absorption to visible light may be the modification of its valence band position by anionic doping, as has been achieved for TiO 2 [168] .…”

Section: The New Promising Semiconductors In Photo-degradation Of Dyesmentioning

confidence: 99%

Advances in Photo-catalytic Materials for Environmental Applications

Ra¹

2016

Res. Rev. J Mat. Sci

View full text Add to dashboard Cite

INTRODUCTIONOver two thirds of Earth's surface is covered by water; less than a third is taken up by land. As Earth's population continues to grow, people are putting ever-increasing pressure on the planet's water resources. In a sense, our oceans, rivers, and other inland waters are being "squeezed" by human activities-not so they take up less room, but so their quality is reduced. Poorer water quality means water pollution. We know that pollution is a human problem because it is a relatively recent development in the planet's history: before the 19 th century Industrial Revolution, people lived more in harmony with their immediate environment. As industrialization has spread around the globe, so the problem of pollution has spread with it. When Earth's population was much smaller, no one believed pollution would ever present a serious problem. It was once popularly believed that the oceans were far too big to pollute. Today, with around 7 billion people on the planet, it has become apparent that there are limits. Pollution is one of the signs that humans have exceeded those limits.Water pollution can be defined in many ways. Usually, it means one or more substances have built up in water to such an extent that they cause problems for animals or people. Water pollution almost always means that some damage has been done to an ocean, river, lake, or other water source. A 1969 United Nations report defined ocean pollution as: "The introduction by man, directly or indirectly, of substances or energy into the marine environment (including estuaries) resulting in such deleterious effects as harm to living resources, hazards to human health, hindrance to marine activities, including fishing, impairment of quality for use of sea water and reduction of amenities."Most water pollution doesn't begin in the water itself. Take the oceans: around 80 percent of ocean pollution enters our seas from the land. Virtually any human activity can have an effect on the quality of our water environment. When farmers fertilize the fields, the chemicals they use are gradually washed by rain into the groundwater or surface waters nearby. Sometimes the causes of water pollution are quite surprising. Chemicals released by smokestacks (chimneys) can enter the atmosphere and then fall back to earth as rain, entering seas, rivers, and lakes and causing water pollution. That's called atmospheric deposition. Water pollution has many different causes like: Sewage, Nutrients, Chemical waste, radioactive waste, Oil pollution, Plastics and Alien species. The common pollutants include toxic organic compounds like chlorinated and non-chlorinated aliphatic and aromatic compounds, dyes, inorganic compounds like heavy metals, noxious gases like NO x , SO x , CO and NH 3 , and pathogens like bacteria, fungi and viruses. ABSTRACTThe growth of industry worldwide has extremely increased the generation and accumulation of waste by products. This has caused severe environmental problems that have become a major concern. Because of this, photo-catalytic polluta...

show abstract

Ni-, Pt- and (Ni/Pt)-doped TiO2 nanophotocatalysts: A smart approach for sustainable degradation of Rhodamine B dye

Abstract: Ni-, Pt-and (Ni/Pt)-doped TiO2 nanophotocatalysts: A smart approach for sustainable degradation of Rhodamine B dye, Applied Catalysis B, Environmental http://dx.

Cited by 90 publications

References 37 publications

Highly active ZnO-based biomimetic fern-like microleaves for photocatalytic water decontamination using sunlight

Highly active ZnO-based biomimetic fern-like microleaves for photocatalytic water decontamination using sunlight

Enhancement of visible light irradiation photocatalytic activity of $$\hbox {SrTiO}_{3}$$ SrTiO 3 nanoparticles by Pt doping for oxidation of cyclohexane

Advances in Photo-catalytic Materials for Environmental Applications

Contact Info

Product

Resources

About