Effect of sulfate ions on the crystallization and photocatalytic activity of TiO2/diatomite composite photocatalyst

Zhang, Jinjun; Wang, Xiaoyan; Wang, Jimei; Wang, Jing; Ji, Zhijiang

doi:10.1016/j.cplett.2015.11.020

Cited by 32 publications

(9 citation statements)

References 35 publications

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“…Therefore, the charged surface showed more affinity to SO 4 2− , resulting in a lower discoloration rate [64,65]. The present result is in concordance with that obtained by Zhang et al [66], in which synthesized TiO 2 nanoparticles were immobilized on diatomite by hydrolysis deposition. The effect of sulfates on the photocatalytic activity of TiO 2 /diatomite indicated that the addition of a small amount of sulfate ions promoted the initial phase and, consequently, the stable sulfate had a strong electron affinity, capturing the photogenerated electrons and making the e − /h + pair recombination difficult.…”

Section: Effect Of the Presence Of So 4 2− Ionssupporting

confidence: 93%

Oxide-Clay Mineral as Photoactive Material for Dye Discoloration

Miranda

Viana²,

Honorio³

et al. 2020

Minerals

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Titanium and zirconium oxides (TiO2 and ZrO2, respectively) were obtained from alkoxides hydrolyses, and then deposited into palygorskite clay mineral (Pal) to obtain new materials for photocatalytic applications. The obtained materials were characterized by structural, morphological, and textural techniques. X-ray diffraction (XRD) results confirmed the characteristic peaks of oxides and clay transmission electron microscopy (TEM) and scanning electron microscopy (SEM) images of the modified palygorskite with both oxides showed that the clay was successfully modified by the proposed method. The increase in the specific surface area of the clay occurred when TiO2 and ZrO2 were deposited on the surface. The photocatalytic activity of these materials was investigated using the Remazol Blue anion dye under UV light. The evaluated systems presented high photocatalytic activity, reaching approximately 98% of dye discoloration under light. Thus, TiO2–Pal and ZrO2–TiO2–Pal are promising clay mineral-based photocatalysts.

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Section: Effect Of the Presence Of So 4 2− Ionssupporting

confidence: 93%

Oxide-Clay Mineral as Photoactive Material for Dye Discoloration

Miranda

Viana²,

Honorio³

et al. 2020

Minerals

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“…Sulfatni joni su takođe pozitivno uticali na razgradnju naproksena, a koncentracija od mg l -1 se pokazala kao najpovoljnija od tri ispitivane, jer je konstanta razgradnje bila uvećana za 107,02% u odnosu na njenu vrednost u odsustvu sulfatnih jona. Poneke neorganske komponente, poput sulfatnih jona, mogu se imobilisati na površini nanočestica fotokatalizatora, pa se time može poboljšati fotokatalitička moć novooformljenog kompozita [11,13]. Izraženo inhibirajuće dejstvo sulfata uočava se kod ketoprofena, gde već pri maloj koncentraciji sulfatnih jona od 20 mg l -1 konstanta razgradnje opada za 87,64%.…”

Section: Uticaj Sulfatnih Jonaunclassified

Uticaj Neorganskih Anjona Na Fotokatalitički Tretman Farmaceutika

Aleksandrovski¹,

Mihajlović

Novaković³

2022

Zbornik radova FTN

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U okviru rada proučavan je uticaj neorganskih anjona na proces fotokatalitičke degradacije farmaceutika u vodama. Detaljno je obrađena tema prisustva neorganskih anjona u vodenoj sredini i njihovih uticaja na procese razgradnje, a zatim i mogući postupci uklanjanja farmaceutika iz vode, uz akcenat na unapređene procese oksidacije i fotokatalitički tretman. Ispitan je uticaj nitratnih, fosfatnih, sulfatnih i hloridnih jona na fotokatalitičku degradaciju naproksena, ibuprofena, ketoprofena i diklofenaka u vodi.

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“…On the other hand, composite catalysts formed from TiO 2 nanoparticles and some inorganic compounds may have a higher photocatalytic activity than conventional semiconductors [Zhang et al 2016]. The effectiveness of the process depends therefore also on the physicochemical composition of the treated solution.…”

Section: Influence Of Inorganic Compounds On the Process Of Photocatamentioning

confidence: 99%

Influence of Inorganic Compounds on the Process of Photocatalysis of Biologically Active Compounds

et al. 2017

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Constant increase in concentration of organic micropollutants in the water environment influences the development of methods for their effective elimination from various matrices released into aquatic ecosystems. One of widely described in literature processes for the decomposition of hardly-biodegradable pollutants is the process of heterogeneous photocatalysis. The paper presents the influence of inorganic substances on the decomposition of polycyclic aromatic hydrocarbons (anthracene and benzo[a]pyrene), industrial admixtures -octylphenol and pharmaceutical compounds -diclofenac in the photocatalysis process conducted in the presence of TiO 2 . It has been shown that the presence of Cl -ions did not affect the photochemical reaction of the micropollutant decomposition. Whereas, the presence of CO 3 2-

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Effect of sulfate ions on the crystallization and photocatalytic activity of TiO2/diatomite composite photocatalyst

Cited by 32 publications

References 35 publications

Oxide-Clay Mineral as Photoactive Material for Dye Discoloration

Oxide-Clay Mineral as Photoactive Material for Dye Discoloration

Uticaj Neorganskih Anjona Na Fotokatalitički Tretman Farmaceutika

Influence of Inorganic Compounds on the Process of Photocatalysis of Biologically Active Compounds

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