Surface modification of silica-coated gadolinium oxide nanoparticles with zinc tetracarboxyphenoxy phthalocyanine for the photodegradation of Orange G

Ledwaba, Mpho; Masilela, Nkosiphile; Nyokong, Tebello; Antunes, Edith

doi:10.1016/j.molcata.2015.03.023

Cited by 24 publications

(23 citation statements)

References 48 publications

(72 reference statements)

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“…[17] The peak that appears at 529.1 eV is attributed to P−O bond. [17] The N (1 s) signal which appears at 398 eV is in accordance with previous data and the peak of P (2p) is lumped with the Gd (4d) peak. [18] The C(1 s) high‐resolution spectrum (Figure d) was decomposed into three different peaks corresponding to DPPC of liposomes.…”

Section: Resultssupporting

confidence: 85%

Liposome-Permeability Templating of Gadolinium Hydroxide Nanostructures

Municoy

Bellino

2016

ChemistrySelect

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With the growing attention in building novel nanostructures, there is a need for general approaches to controlling the sizes and shapes in precipitation processes. Here, precipitated gadolinium hydroxides (Gd(OH) 3 ) were made in the form of hollow spheres by control of the liposome permeability. Addition of Gd(NO 3 ) 3 to the acidic solution containing the liposomes entrapping OH À creates a self-precipitating template in the precipitation process. The control-formation of these nano-structures takes place through a liposome-membrane phase change. Hybrid nanocapsules are obtained when entrapped hydroxyl ions (OH À ) permeates from the liposome and shell material precipitates by forming Gd(OH) 3 . The morphology of the final product is molded on the original liposome. This synthesis strategy might have implications in significant applications, such as drug delivery systems, and in mineralization, where many processes are also membrane-assisted.

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Section: Resultssupporting

confidence: 85%

Liposome-Permeability Templating of Gadolinium Hydroxide Nanostructures

Municoy

Bellino

2016

ChemistrySelect

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“…The process constitutes a means of removing persistent water contaminants such as dyes, which have high chemical stability and low biodegradability, via photocatalytic degradation [1][2][3][4][5]. In recent times, several techniques to improve the efficiency and reusability of the photoactive compounds responsible for photodegradation have been explored [6][7][8][9]. Some of such techniques include the development of photosensitizers supported on polymer matrices [6,7] and nanoparticles [8,9].…”

Section: Introductionmentioning

confidence: 99%

“…In recent times, several techniques to improve the efficiency and reusability of the photoactive compounds responsible for photodegradation have been explored [6][7][8][9]. Some of such techniques include the development of photosensitizers supported on polymer matrices [6,7] and nanoparticles [8,9]. A promising candidate among the many previously tested compounds is the metallophthalocyanines (MPcs) [6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

“…Some of such techniques include the development of photosensitizers supported on polymer matrices [6,7] and nanoparticles [8,9]. A promising candidate among the many previously tested compounds is the metallophthalocyanines (MPcs) [6][7][8][9][10][11][12]. This family of compounds is favored due to their excellent absorption in the visible range of the electromagnetic spectrum, their high chemical and thermal stability, and their remarkable ability to generate reactive singlet oxygen ( 1 O 2 ) from ground state molecular oxygen during photoexcitation [8,9,12].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and spectroscopic characterization of new phthalocyanine derivatives:application as photocatalysts for the degradation of Orange G

Yılmaz¹,

Sanusi²

2019

Turk J Chem

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New derivatives of 2(3),9(10),16(17),23(24)-tetrakis-(6-methylpyridin-2-yloxy)phthalocyanine (Pc) (2b, 2c, and 2d) were synthesized and their structures were characterized by elemental analysis, IR, 1 H NMR, and high-resolution mass spectrometry. The spectral results were in line with the proposed structures. The photodegradation of Orange G (OG) dye in DMSO by the Pc derivatives was investigated. The compounds showed relatively high photodegradation rates that increased with increasing size of the central atoms. The Pc photodegradation rates showed fair correlation with the singlet oxygen generation efficiencies (Φ∆). The observed rate constants were higher than the values already reported for other Pcs in the literature for the photodegradation of OG in aqueous media.

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“…Furthermore, Schiff base derivatives of [1, 2,4] triazoles have been identified having diverse pharmacological properties, like antifungal, antimicrobial, anticancer, antioxidant, anticonvulsant and anti-tubercular activities [9][10][11][12]. Moreover, Schiff bases bearing 1,2,4-triazole ring play important roles in coordination chemistry as they easily stable complexes with most transition metal ions [13,14].…”

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confidence: 99%

Triazole substituted phthalocyanines and their electrochemical properties

Bayrak

2017

Hittite J. Sci. Eng.

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P hthalocyanines (Pcs) can be used many different applications such as gas sensors, electrochromic devices, photovoltaic cells and photodynamic therapy (PDT), due to their 18-π planar conjugate electron system [1][2][3][4]. Therefore synthesizing Pcs having different groups play a vital role in promoting these high technologies.These macrocyclic compounds are ideal building blocks for applications when they are modified with groups in the desired properties. For this reason, substitution of Pcs either on peripheral/nonperipheral or axial positions has vital importance for their utilizations. Furthermore, the solubility of Pc derivatives plays a critical role in order to use in all those applications. Phthalocyanines that unsubstituted are not soluble in common organic solvents due to the aggregation. These compounds can be made soluble in organic solvents by integration of substituents in the periphery/non-periphery of Pc core, thus increasing their electrochemical and catalysis applications. [5]. 1,2,4-Triazole derivatives are one of the key organic compound class have an important functions in biological applications. It's known that some of 1,2,4-triazoles exhibit biological trenchancy e.g. antifungal, anti microbial, anti viral, anti tubercular,

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Surface modification of silica-coated gadolinium oxide nanoparticles with zinc tetracarboxyphenoxy phthalocyanine for the photodegradation of Orange G

Cited by 24 publications

References 48 publications

Liposome-Permeability Templating of Gadolinium Hydroxide Nanostructures

Liposome-Permeability Templating of Gadolinium Hydroxide Nanostructures

Synthesis and spectroscopic characterization of new phthalocyanine derivatives:application as photocatalysts for the degradation of Orange G

Triazole substituted phthalocyanines and their electrochemical properties

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