Synthesis and characterization of Ag<sup>0</sup>(NPs)/TiO<sub>2</sub> nanocomposite: insight studies of triclosan removal from aqueous solutions

Tiwari, Alka; Shukla, Alok; Lalliansanga,; Tiwari, Diwakar; Lee, Seung Mok

doi:10.1080/09593330.2019.1615127

Cited by 24 publications

(11 citation statements)

References 63 publications

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“…Additionally, Zhang et al, (2019) [37], further showed that the sorption mechanisms among CNT dispersion and compounds depend on the dispersion properties that the aggregated CNT do not exhibit and also of the principal interactions between MWCNTs and compounds. In the present work, TiO 2 thin films revealed a better performance in MMW matrix and this result may be explained by the fact that they are oxides, which may improve its adsorption capacity to TCS compound [27]. On the other hand, for water matrices, the results were less evident, and these results can be explained because CNTs tend to form aggregates in water due to the strong Van der Waals interactions, which can limit their sorption sites' availability for the target compounds [38].…”

Section: Sensor Response: Impedance Spectroscopy Measurementssupporting

confidence: 49%

“…On this base, Multi-Walled Carbon Nanotubes (MWCNTs) and titanium dioxide (TiO 2 ) thin films were studied. TiO 2 thin films have been used in electrocatalytic, photocatalytic and photo electrocatalytic degradation of organic pollutants including TCS [26][27][28][29]. TiO 2 presents adsorption ability to the lipopolysaccharide, due to the high relative surface area, hydrophilic property and electrostatic attraction [30].…”

Section: Introductionmentioning

confidence: 99%

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Magnetron Sputtering Thin Films as Tool to Detect Triclosan in Infant Formula Powder: Electronic Tongue Approach

et al. 2021

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Triclosan (TCS) is being detected in breast milk and in infants of puerperal women. The harmful effects caused by this compound on living beings are now critical and thus it is pivotal find new tools to TCS monitoring. In the present study, an electronic tongue (e-tongue) device comprising an array of sputtered thin films based on Multi-Walled Carbon Nanotubes and titanium dioxide was developed to identify TCS concentrations, from 10−15 to 10−5 M, in both water and milk-based solutions. Impedance spectroscopy was used for device signal transducing and data was analyzed by principal component analysis (PCA). The e-tongue revealed to be able to distinguish water from milk-based matrices through the two Principal Components (PC1 and PC2), which represented 67.3% of the total variance. The PC1 values of infant formula milk powder prepared with tap water (MT) or mineral water (MMW) follows a similar exponential decay curve when plotted with the logarithm of concentration. Therefore, considering the TCS concentration range between 1015 and 10−9 M, the PC1 values are fitted by a straight line and values of −1.9 ± 0.2 and of 7.6 × 10−16 M were calculated for the sensor sensitivity and sensor resolution, respectively. Additionally, a strong correlation (R = 0.96) between MT and MMW PC1 data was found. These results have shown that the proposed device corresponds to a promisor method for the detection of TCS in milk-based solutions.

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Section: Sensor Response: Impedance Spectroscopy Measurementssupporting

confidence: 49%

Section: Introductionmentioning

confidence: 99%

Magnetron Sputtering Thin Films as Tool to Detect Triclosan in Infant Formula Powder: Electronic Tongue Approach

et al. 2021

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“…The effect of initial concentrations of SMX was studied by Tiwari et al [72] in photocatalytic removal over thin film photocatalyst Ag0(NP)/TiO 2 (B). Researchers reported a decrease in photodegradation efficiency from 57% to 20% when SMX concentration was increased from 0.5 mgL −1 to 15.0 mgL −1 .…”

Section: Effect Of Antibiotic Concentrationmentioning

confidence: 99%

Application of TiO2-Based Photocatalysts to Antibiotics Degradation: Cases of Sulfamethoxazole, Trimethoprim and Ciprofloxacin

2021

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The extensive application of antibiotics in human and veterinary medicine has led to their widespread occurrence in a natural aquatic environment. Global health crisis is associated with the fast development of antimicrobial resistance, as more and more infectious diseases cannot be treated more than once. Sulfamethoxazole, trimethoprim and ciprofloxacin are the most commonly detected antibiotics in water systems worldwide. The persistent and toxic nature of these antibiotics makes their elimination by conventional treatment methods at wastewater treatment plants almost impossible. The application of advanced oxidation processes and heterogeneous photocatalysis over TiO2-based materials is a promising solution. This highly efficient technology has the potential to be sustainable, cost-efficient and energy-efficient. A comprehensive review on the application of various TiO2-based photocatalysts for the degradation of sulfamethoxazole, trimethoprim and ciprofloxacin is focused on highlighting their photocatalytic performance under various reaction conditions (different amounts of pollutant and photocatalyst, pH, light source, reaction media, presence of inorganic ions, natural organic matter, oxidants). Mineralization efficiency and ecotoxicity of final products have been also considered. Further research needs have been presented based on the literature findings. Among them, design and development of highly efficient under sunlight, stable, recyclable and cost-effective TiO2-based materials; usage of real wastewaters for photocatalytic tests; and compulsory assessment of products ecotoxicity are the most important research tasks in order to meet requirements for industrial application.

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“…The use of metals slows the charge-pair recombination by acting as an electron sink or by trapping electrons on the CB to be transferred to electron acceptors. This study Standard water treatment systems are unable to rid waterways of such antibiotics pollutants, such as tetracycline, creating a need for oxidation processes including TiO 2 photocatalyst [16]. Tiwari et al aimed to improve the limited photocatalytic functions of TiO 2 through the doping of noble metal nanoparticles of Au onto the titanium dioxide.…”

Section: Improving the Efficiency With Decorated Tio2 Nanopillarsmentioning

confidence: 99%

Improving Photocatalytic Performance Using Nanopillars and Micropillars

Waite

Hunt

2021

Materials

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A recent research emphasis has been placed on the development of highly crystallized nanostructures as a useful technology for many photocatalytic applications. With the unique construction of semiconductor transition metal oxide nanostructures in the form of nanopillars—artificially designed pillar-shaped structures grouped together in lattice-type arrays—the surface area for photocatalytic potential is increased and further enhanced through the introduction of dopants. This short review summarizes the work on improving the efficiency of photocatalyst nanopillars through increased surface area and doping within the applications of water splitting, removal of organic pollutants from the environment, photoswitching, soot oxidation, and photothermalization.

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Synthesis and characterization of Ag⁰(NPs)/TiO₂ nanocomposite: insight studies of triclosan removal from aqueous solutions

Cited by 24 publications

References 63 publications

Magnetron Sputtering Thin Films as Tool to Detect Triclosan in Infant Formula Powder: Electronic Tongue Approach

Magnetron Sputtering Thin Films as Tool to Detect Triclosan in Infant Formula Powder: Electronic Tongue Approach

Application of TiO2-Based Photocatalysts to Antibiotics Degradation: Cases of Sulfamethoxazole, Trimethoprim and Ciprofloxacin

Improving Photocatalytic Performance Using Nanopillars and Micropillars

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Synthesis and characterization of Ag0(NPs)/TiO2 nanocomposite: insight studies of triclosan removal from aqueous solutions

Cited by 24 publications

References 63 publications

Magnetron Sputtering Thin Films as Tool to Detect Triclosan in Infant Formula Powder: Electronic Tongue Approach

Magnetron Sputtering Thin Films as Tool to Detect Triclosan in Infant Formula Powder: Electronic Tongue Approach

Application of TiO2-Based Photocatalysts to Antibiotics Degradation: Cases of Sulfamethoxazole, Trimethoprim and Ciprofloxacin

Improving Photocatalytic Performance Using Nanopillars and Micropillars

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Synthesis and characterization of Ag⁰(NPs)/TiO₂ nanocomposite: insight studies of triclosan removal from aqueous solutions