Antibacterial and Photocatalytic Properties of ZnO–9-Aminoacridine Hydrochloride Hydrate Drug Nanoconjugates

Mitra, P.; Dutta, Dipak; Das, Somnath; Basu, Tarakdas; Pramanik, Arindam; Patra, Amitava

doi:10.1021/acsomega.8b00568

Cited by 35 publications

(16 citation statements)

References 72 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[43] Moreover, due to their photocatalycic activity, ZnO nanoparticles have been synthesized as anticancer and antibacterial agents. [44][45][46][47][48] In photochemistry, ZnO excitons can produce reactive oxygen species, including hydroxyl radicals (OH − ) and hydrogen peroxide (H 2 O 2 ) from water and oxygen, which effectively decompose organic compounds. [49] In the case of photoconductivity processes, it has been reported that the presence of hole traps in ZnO nanowires prevents carrier recombination, extending the photocarrier lifetime and, therefore, improving its photoconductivity performance.…”

Section: Introductionmentioning

confidence: 99%

“…Photogenerated ZnO holes are also important in hybrid systems, such as polyaniline‐ZnO, where the polymer is used to enhance the oxide's photoactivity and to inhibit photocorrosion . Moreover, due to their photocatalycic activity, ZnO nanoparticles have been synthesized as anticancer and antibacterial agents . In photochemistry, ZnO excitons can produce reactive oxygen species, including hydroxyl radicals (OH − ) and hydrogen peroxide (H 2 O 2 ) from water and oxygen, which effectively decompose organic compounds .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Modeling of Intrinsic Electron and Hole Trapping in Crystalline and Amorphous ZnO

Mora‐Fonz

Shluger

2019

Adv Elect Materials

View full text Add to dashboard Cite

Furthermore, even thermodynamically stable phases, for example, zincblende or rocksalt, are only grown under very specific conditions of substrates and/or at high pressure (see, e.g., refs. [8-12]). Although successful growth of thin a-ZnO films with thicknesses ranging from 5 to 100 nm using different techniques and on different substrates has been reported, [13-18] the morphology of these films remains controversial due to the lack of high intensity X-ray diffraction or grazing incidence X-ray and neutron diffraction characterization. Many of such films are reported to contain nanocrystalline inclusions. [13,16,18-20] Amid largely unsuccessful attempts to grow good quality a-ZnO films, theoretical predictions of a-ZnO have been more optimistic. Stable a-ZnO structures have been produced using mainly ab initio molecular dynamics (MD) melt and quench (MQ) methods. [21-26] These computationally demanding calculations use small periodic cells, very high cooling rates, and provide limited statistics of structural characteristics. The sampling of the a-ZnO configurational space has been, therefore, poor and a distribution of electronic properties has not been provided yet. Recently, we investigated the ability of bulk ZnO to form glass structures using interatomic potentials (IPs) and an MQ procedure within isothermal-isobaric (NPT) ensemble. [27] This allowed us to use large (up to 768 000 atoms) periodic cells and improve the statistics of the distribution of a-ZnO structural characteristics. These calculations have demonstrated that cooling rates in an MQ procedure around 100 K ps −1 lead to the formation of stable and uniform amorphous structures. ZnO samples show, however, different degrees of crystallinity at lower cooling rates. The average density of a-ZnO samples produced using IPs is about 5.04 g cm −3 and the coordination numbers of Zn and O atoms are around 3.9, reflecting the strong propensity to crystallization. Still, the stability tests carried out using the activation-relaxation technique (ART) [28-32] and simulated annealing demonstrated that the obtained amorphous structures are stable. [27] Advances in ultrafast liquid quenching and deposition of thin films on cold substrates [33-36] make achieving growth of amorphous ZnO films a tangible prospect. Their potential use in (photo)electronic devices will expose these films to electrons and holes. Therefore, questions arise whether a-ZnO films will retain good electron mobility and whether there is any possibility for electron or hole localization due to disorder. Such Recent advances in ultrafast liquid quenching and deposition of thin films on cold substrates make growing amorphous (a)-ZnO films increasingly feasible. The electronic structure and electron and hole trapping properties of amorphous ZnO are predicted using density functional theory (DFT) simulations with a hybrid density functional (h-DFT). An ensemble of fifty 324-atom structures is employed to obtain the distribution of structural and electronic properties of a-ZnO. The results demon...

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modeling of Intrinsic Electron and Hole Trapping in Crystalline and Amorphous ZnO

Mora‐Fonz

Shluger

2019

Adv Elect Materials

View full text Add to dashboard Cite

show abstract

“…2 In addition to the semiconductor property, ZnO has intriguing piezoelectric, 3 oxidizing, 4 and antibacterial properties. 5−7 Moreover, because of the cheaper price, abundance, and high chemical, as well as physical robustness, ZnO is widely used in a number of applications. For example, ZnO is used in transparent electrodes of the dye-sensitized solar cells, 8 piezoelectric nanogenerators, 9 sensing, 10 as fillers in numerous products, 11 ultraviolet (UV) light absorbers in personal care products, 12 light-emitting diodes, 13 UV photodetectors, 14 and photocatalysis.…”

Section: Introductionmentioning

confidence: 99%

Sucrose-Mediated Fast Synthesis of Zinc Oxide Nanoparticles for the Photocatalytic Degradation of Organic Pollutants in Water

et al. 2019

View full text Add to dashboard Cite

We report a facile method for the synthesis of zinc oxide nanoparticles (nZnOs) by rapidly heating a paste of zinc nitrate and sucrose on the hot plate at 500 °C. The transmission electron microscopy images revealed the spherical shape of the nZnO with an average size of 35 nm. The band gap and the specific surface area of the nZnO were measured to be about 3.32 eV and 80.11 m 2 /g, respectively. The nZnO was utilized for the photocatalytic degradation of methyl orange (MO) and methylene blue (MB) in water under the ultraviolet (UV-B) light and sunlight irradiation. Photocatalysis was performed in two types of water matrices, viz., the deionized water and the simulated fresh drinking water. Almost a complete degradation of MO and MB was obtained within 30 min of UV-B light irradiation. Under sunlight irradiation, more than 95% of the MO solution underwent degradation within 30 min. The photocatalytic stability of the nZnO was examined for five cycles, and a similar activity was found throughout the cycles. The photocatalytic generation of the hydroxyl radical ( • OH) was confirmed by the terephthalic acid photoluminescence tests. Moreover, the synthesis methodology was validated by triplicating the nZnO synthesis. Every time, the nZnO demonstrated a similar photocatalytic activity, which confirmed the robustness of the synthesis procedure.

show abstract

“…This result shows the formation of ZnO/α-Fe 2 O 3 nanocomposites and reveals that Fe, Zn, and O elements exist in the nanocomposites, as shown in Figure 3g. The optical absorption spectra of the ZnO and ZnO/α-Fe2O3 nanocomposites with different weight percentages are shown in Figure 4, which shows the pure ZnO absorption peak at 345 nm exhibited in the UV region [41,42]. Further, it extends to the visible region after incorporating α-Fe2O3 with different weight percentages.…”

Section: Resultsmentioning

confidence: 99%

Fabrication of Hybrid Catalyst ZnO Nanorod/α-Fe2O3 Composites for Hydrogen Evolution Reaction

et al. 2020

View full text Add to dashboard Cite

This report presents the synthesis of ZnO nanorod/α-Fe2O3 composites by the hydrothermal method with different weight percentages of α-Fe2O3 nanoparticles. The as-synthesized nanorod composites were characterized by different techniques, such as X-ray diffraction (XRD), Fourier transform-infrared (FT-IR), field emission scanning electron microscopy (FE-SEM), electrochemical impedance spectroscopy (EIS), and X-ray photoelectron spectroscopy (XPS). From our results, it was found that the ZnO/α-Fe2O3 (3 wt%) nanorod composites exhibit a higher hydrogen evolution reaction (HER) activity when compared to other composites. The synergetic effect between ZnO and (3 wt%) of α-Fe2O3 nanocomposites resulted in a low onset potential of −125 mV, which can effectively produce more H2 than pure ZnO. The H2 production rate over the composite of ZnO/α-Fe2O3 (3 wt%) clearly shows a significant improvement in the photocatalytic activity in the heterojunction of the ZnO nanorods and α-Fe2O3 nanoparticles on nickel foam.

show abstract

Antibacterial and Photocatalytic Properties of ZnO–9-Aminoacridine Hydrochloride Hydrate Drug Nanoconjugates

Cited by 35 publications

References 72 publications

Modeling of Intrinsic Electron and Hole Trapping in Crystalline and Amorphous ZnO

Modeling of Intrinsic Electron and Hole Trapping in Crystalline and Amorphous ZnO

Sucrose-Mediated Fast Synthesis of Zinc Oxide Nanoparticles for the Photocatalytic Degradation of Organic Pollutants in Water

Fabrication of Hybrid Catalyst ZnO Nanorod/α-Fe2O3 Composites for Hydrogen Evolution Reaction

Contact Info

Product

Resources

About