Organic Photocatalysts for the Oxidation of Pollutants and Model Compounds

Marín, M. Luisa; Santos‐Juanes, Lucas; Arqués, A.; Amat, Ana M.; Miranda, Miguel A.

doi:10.1021/cr2000543

Cited by 385 publications

(244 citation statements)

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“…Several strategiesh aveb een developed to efficiently populate triplet excited state in organic materials. For example, incorporation of transition metal ions such as d 10 8 Au III into the organic ligands leads to highly populated triplet states upon excitation with light. [1,3,15] Moreover,a toms with high atomic numbers (I, Br,I r, Pt, Ru, Os, Pb, Tl, etc.)…”

Section: Introductionmentioning

confidence: 99%

Visible‐Light Photoactive, Highly Efficient Triplet Sensitizers Based on Iodinated Aza‐BODIPYs: Synthesis, Photophysics and Redox Properties

Gut

Łapok

Drelinkiewicz

et al. 2017

Chemistry An Asian Journal

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As eries of novel iodinated NO 2 -substituted azaBODIPYs have been synthesized and characterized.H ighly desirable photophysical and photochemical properties were induced in NO 2 -substituted aza-BODIPYs by iodinationo ft he pyrrole rings. In particular, highv alues of singlet oxygen quantum yields (F D )r anging from 0.79 to 0.85 were measured. The photooxygenation process proceeds via aT ype II mechanism under the experimental conditions applied. The compounds studied exhibited an absorption band within the so-called "therapeutic window", with l max located between 645 nm to 672 nm. They were non-fluorescent at room temperature with excited singlet-state lifetimes within the picosecond range as measured by femtosecond transient absorption. Nanosecond laser flash photolysis experiments revealed T 1 !T n absorption spanning from ca. 400 nm to ca. 500 nm and allowedd etermination of the triplet-state lifetimes. The estimated triplet lifetimes (t T )i nd eaerated acetonitrile ranged between 2.74 msa nd 3.50 ms. As estimated by CV/DPV measurements, all iodinateda za-BODIPYs studied exhibited one irreversible oxidation and two quasireversible reductions processes. Estimation of the E HOMO gave the value of À6.06 to À6.26 eV while the E LUMO was found to be located at ca. À4.6 eV.T hermogravimetric (TGA) analysis revealed that iodinated aza-BODIPYs weres table up to approximately 300 8C. All compounds studied exhibit high photostability in toluene solution.

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Section: Introductionmentioning

confidence: 99%

Visible‐Light Photoactive, Highly Efficient Triplet Sensitizers Based on Iodinated Aza‐BODIPYs: Synthesis, Photophysics and Redox Properties

Gut

Łapok

Drelinkiewicz

et al. 2017

Chemistry An Asian Journal

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“…Apart from TiO 2 -based semiconductors, non-TiO 2 -based materials also become a research hotspot in the field of contamination control (Brahimi et al 2008;Jinlin et al 2014;Liu et al 2014;Marin et al 2012;Martinez Suarez et al 2015;Wang et al 2015;Zhang and Zhu 2012;Zhang et al 2016;Zhao et al 2015). Among these materials, bismuth oxide compounds are prominent due to their special layer structure, which is beneficial to electron transfer in the interlayer Liu et al (2010).…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Bi $$_{5}$$ 5 O $$_{7}$$ 7 I Photocatalysts for Efficient Removal of NO in Air Under Visible Light

et al. 2017

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In this study, we report a flower-like Bi 5 O 7 I photocatalyst with a 41% gaseous nitride oxide (NO) removal efficiency under visible light through the in situ thermal treatment of the hierarchical architecture BiOI synthesized using a facile hydrothermal process. The UV-Vis diffuse reflectance spectroscopy and photocurrent experiments showed that the absorption band edge and photo-induced electron-hole pairs separation efficiency of Bi 5 O 7 I were negative than that of BiOI, whereas the as-prepared Bi 5 O 7 I exhibited excellent and stable visible light photocatalytic performance for NO removal as compared with original BiOI and P25. The results of electron spin resonance spectroscopy and density functional theory calculations suggested that the prominent visible light photocatalytic activity of obtained Bi 5 O 7 I has been attributed to the proper electron band structure which oxidizes the O 2 molecule to ·OH radicals with two electrons in the conduction band. Electronic supplementary materialThe online version of this article

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“…Literatürde atık sulardan bazik boyarmaddelerin giderimi için ozonlama [10,11], fotokataliz [12], adsorpsiyon [13,14], koagülasyon-flokülasyon [15,16] ve biyolojik muamele metotları [17,18] gibi birçok alternatif teknikler bildirilmiştir. Bu metotların bazıları boyama atık sularından boya giderimi konusunda etkili değillerdir.…”

Section: Gi̇ri̇ş (Introduction)unclassified

Tekstil Atık Sularından C.I. Bazik Mavi 3 Boyarmaddesinin Elektrokimyasal Uygulama ile Giderilmesi

Bulut¹

2016

SAUFenBilDer

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ÖZTekstil boyama endüstrisinde kullanılan Bazik Mavi 3 boyarmaddesinin alüminyum elektrot kullanılarak elektrokimyasal olarak tekstil atık sularından giderimi üzerinde çalışılmıştır. Kesikli proses ile yapılan deneyler sonrasında 10 dakika sonunda pH8 değerinde %97'den fazla giderim etkinliği hesaplanmıştır. Elektrokimyasal işlemin 6. dakikası sonunda 50-400 mg/L aralığındaki konsantrasyonlardaki boya giderim etkinliği %92-95 arasında değişirken bu oran, 500 ve 600 mg/L için sırasıyla %72 ve %60 olarak hesaplanmıştır. 10. dakika sonunda ise bütün konsantrasyon değerlerindeki boya giderim oranı %96 civarındadır. Akım yoğunluğu değerlendirildiğinde ise boya giderim etkinliği 333 A/m 2 akım yoğunluğu ile 4. dakikadan sonra (%96) işlem bitene kadar çok fazla bir artış göstermemiş ve 10. dakikada %97 seviyesine ulaşmıştır.Anahtar Kelimeler: elektrokoagülasyon, tekstil atık suları, bazik mavi 3, alüminyum elektrot Removal of C.I. Basic Blue 3 dyestuff from textile waste waters by electrochemical treatment ABSTRACTThe present study investigates the electrochemical treatment of Basic Blue 3 dyestuff from the textile waste waters. We achieved more than 97% color removal with pH8 after 10 minutes. In terms of initial dye concentrations, 92-95%, 72 and 60% dye removal efficiencies were obtained in 6 minutes for 50-400 mg/L, 500 and 600 mg/L initial dye concentrations respectively. In 10 minutes removing efficiencies became 96% for all the concentrations. When we consider the current density parameter, 96% removal efficiency was obtained with 333 A/m 2 current density in 4 minutes respectively. However the removal efficiency only increases to 97% in 10 minutes.

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Organic Photocatalysts for the Oxidation of Pollutants and Model Compounds

Cited by 385 publications

References 248 publications

Visible‐Light Photoactive, Highly Efficient Triplet Sensitizers Based on Iodinated Aza‐BODIPYs: Synthesis, Photophysics and Redox Properties

Visible‐Light Photoactive, Highly Efficient Triplet Sensitizers Based on Iodinated Aza‐BODIPYs: Synthesis, Photophysics and Redox Properties

Three-Dimensional Bi $$_{5}$$ 5 O $$_{7}$$ 7 I Photocatalysts for Efficient Removal of NO in Air Under Visible Light

Tekstil Atık Sularından C.I. Bazik Mavi 3 Boyarmaddesinin Elektrokimyasal Uygulama ile Giderilmesi

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