Bandgap and visible-light-induced photocatalytic performance and dye degradation of silver doped HAp/TiO2 nanocomposite by sol-gel method and its antimicrobial activity

Mariappan, Aruljothi; Pandi, P.; Rajeswarapalanichamy, R; Neyvasagam, K.; Sureshkumar, Shanmugam; Gatasheh, Mansour K.; Hatamleh, Ashraf Atef

doi:10.1016/j.envres.2022.113079

Cited by 31 publications

(12 citation statements)

References 18 publications

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“…It was obvious that Ag doping, Cu doping or Ag-Cu co-doping did not significantly change the crystal structure of KTO, which was in good accordance with the previous published reports [18,32]. In addition, no peak related to Cu or Ag was observed in the diffraction patterns of doped KTO samples, indicating that Cu ions and Ag ions entered the lattice of KTO and replaced partial Ti ions [36,37]. The lattice parameters of the tested samples obtained by the Rietveld full spectrum fitting method are shown in table 1.…”

Section: Microstructure Characterizations 311 Xrd Analysissupporting

confidence: 89%

“…The lattice parameters of the tested samples obtained by the Rietveld full spectrum fitting method are shown in table 1. Compared to pure KTO, the lattice constants of the samples doped with metal ions have been changed, which can be attributed to the lattice distortion resulting from the different ionic radii of Ti 4+ (0.605 Å) in KTO lattice, Ag + (1.15 Å) and Cu 2+ (0.73 Å) [36][37][38][39][40][41].…”

Section: Microstructure Characterizations 311 Xrd Analysismentioning

confidence: 99%

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Synergistic effect of Ag and Cu on improving in vitro biological properties of K2Ti6O13 nanowires for potential biomedical applications

Lei

Zhao

et al. 2023

Biomed. Mater.

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The development of novel antibacterial nano-materials with synergistic biological effects has attracted extensive interest of the researchers. In the study, 0.5 mol% Ag and 0.5 mol% Cu co-doped K2Ti6O13 (0.5 Ag-0.5 Cu-KTO) nanomaterial was successfully synthesized using two-step method of sol-gel and hydrothermal synthesis. The crystal structure of 0.5 Ag-0.5 Cu-KTO was the same as that of monoclinic K2Ti6O13. Ag ions and Cu ions were uniformly loaded on K2Ti6O13 by replacing partial Ti ions, so that these antibacterial ions could be slowly released. High specific surface area of 0.5 Ag-0.5 Cu-KTO (337.6 m2/g) provided more surface active sites for Ag-Cu doping and adsorption. More negative surface zeta potential (-32.83 mV in phosphate buffer solution (PBS) and -21.45 mV in physiological saline solution (PSS), respectively) would be beneficial to prevent the aggregation of the nanowires in physiological environment. Under the same doping amount, compared to 1.0 mol% Cu doped K2Ti6O13, 0.5 Ag-0.5 Cu-KTO exhibited better antibacterial performance against gram-positive and gram- negative bacteria at only 100 μg/mL dose concentration, near to 1.0 mol% Ag doped K2Ti6O13 (1.0 Ag-KTO). And 0.5 Ag-0.5 Cu-KTO showed more excellent biocompatibility than 1.0 Ag-KTO, which was attribute to the introduction of Cu ions effectively decreasing the hemolytic and cytotoxic risks from Ag ions. As expected, the synthesized 0.5 Ag-0.5 Cu-KTO nanowires demonstrated excellent structural stability, high antibacterial activity, good hemocompatibility and cytocompatibility owing to the synergistic effects of Cu and Ag ions. 0.5 Ag-0.5 Cu-KTO nanowires will be a promising antimicrobial candidate for biomedical applications.

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Section: Microstructure Characterizations 311 Xrd Analysissupporting

confidence: 89%

Section: Microstructure Characterizations 311 Xrd Analysismentioning

confidence: 99%

Synergistic effect of Ag and Cu on improving in vitro biological properties of K2Ti6O13 nanowires for potential biomedical applications

Lei

Zhao

et al. 2023

Biomed. Mater.

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“… 27 The phase composition, crystallinity, and grain size of HAP NPs increased with the increase in the calcination temperature. 28 The sol–gel method is simple and economical, and the production has good homogeneity and better biocompatibility. However, the process is complex with low productivity.…”

Section: Preparation Of Hap-based Carriersmentioning

confidence: 99%

Hydroxyapatite-based carriers for tumor targeting therapy

Qian

Xiong

2023

RSC Adv.

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“…When the particle size is reduced to 1–10 nm, a quantum size effect occurs, and the band gap becomes larger, thereby significantly improving the photocatalytic activity. There have been some studies on the relationship between particle size and photocatalytic performance [45–49] . Almquist et al [50] .…”

Section: The Mechanism Of Photocatalysis Of Tio2mentioning

confidence: 99%

“…There have been some studies on the relationship between particle size and photocatalytic performance. [45][46][47][48][49] Almquist et al [50] prepared anatase powders with particle sizes ranging from 5 ~165 nm. The results show that photocatalytic activity is the highest when the particle diameter is 25 ~40 nm.…”

Section: Particle Sizementioning

confidence: 99%

Synthesis and Applications of TiO₂‐based Nanostructures as Photocatalytic Materials

Zhao

Zhang

et al. 2022

Chemistry An Asian Journal

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TiO 2 photocatalysis, as an energy-saving, highefficiency and green technology, has a wide range of applications in sewage treatment, cancer treatment, hydrogen production, photocatalytic CO 2 reduction and photocatalytic sensors. However, the large band width (E g = 3.2 eV) of TiO 2 material hinders its practical application, which in turn leads to low visible-light utilization and low quantum yield.Therefore, the preparation of TiO 2 with high quantum yield and fast response to visible light has become a key topic in current photocatalyst research. This review discusses different photocatalytic applications, current synthetic techniques for the elaboration of nanostructures of several TiO 2 -based materials and recent advances in enhancing visible photocatalytic activity.

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Bandgap and visible-light-induced photocatalytic performance and dye degradation of silver doped HAp/TiO2 nanocomposite by sol-gel method and its antimicrobial activity

Cited by 31 publications

References 18 publications

Synergistic effect of Ag and Cu on improving in vitro biological properties of K2Ti6O13 nanowires for potential biomedical applications

Synergistic effect of Ag and Cu on improving in vitro biological properties of K2Ti6O13 nanowires for potential biomedical applications

Hydroxyapatite-based carriers for tumor targeting therapy

Synthesis and Applications of TiO₂‐based Nanostructures as Photocatalytic Materials

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Bandgap and visible-light-induced photocatalytic performance and dye degradation of silver doped HAp/TiO2 nanocomposite by sol-gel method and its antimicrobial activity

Cited by 31 publications

References 18 publications

Synergistic effect of Ag and Cu on improving in vitro biological properties of K2Ti6O13 nanowires for potential biomedical applications

Synergistic effect of Ag and Cu on improving in vitro biological properties of K2Ti6O13 nanowires for potential biomedical applications

Hydroxyapatite-based carriers for tumor targeting therapy

Synthesis and Applications of TiO2‐based Nanostructures as Photocatalytic Materials

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Product

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Synthesis and Applications of TiO₂‐based Nanostructures as Photocatalytic Materials