Tuned morphologies of DNA-assisted ZnO struggling against pH

Cai, Aijun; Wang, Yalan; Xing, Shengtao; Du, Liqiang; Ma, Zichuan

doi:10.1016/j.ceramint.2012.06.071

Cited by 7 publications

(7 citation statements)

References 15 publications

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“…Bio-inspired synthesis of ZnO nanoparticles has been achieved using environmentally and eco-friendly accepted systems. Several studies have been investigated the use of natural materials for ZnO nanoparticles synthesis such as DNA [12], silk [13], albumen [14], orange juice [15], pea starch [16], peptide structures [17] and etc. The use of nanoparticles derived from noble metals has spread in many areas involving medical fields, electronics, antibacterial textiles, etc.…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal synthesis of zinc oxide nanoparticles using rice as soft biotemplate

Ramimoghadam

Hussein

Taufiq‐Yap

2013

Chemistry Central Journal

126

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BackgroundRice as a renewable, abundant bio-resource with unique characteristics can be used as a bio-template to synthesize various functional nanomaterials. Therefore, the effect of uncooked rice flour as bio-template on physico-chemical properties, especially the morphology of zinc oxide nanostructures was investigated in this study.The ZnO particles were synthesized through hydrothermal-biotemplate method using zinc acetate-sodium hydroxide and uncooked rice flour at various ratios as precursors at 120°C for 18 hours.ResultsThe results indicate that rice as a bio-template can be used to modify the shape and size of zinc oxide particles. Different morphologies, namely flake-, flower-, rose-, star- and rod-like structures were obtained with particle size at micro- and nanometer range. Pore size and texture of the resulting zinc oxide particles were found to be template-dependent and the resulting specific surface area enhanced compared to the zinc oxide synthesized without rice under the same conditions. However, optical property particularly the band gap energy is generally quite similar.ConclusionPure zinc oxide crystals were successfully synthesized using rice flour as biotemplate at various ratios of zinc salt to rice. The size- and shape-controlled capability of rice to assemble the ZnO particles can be employed for further useful practical applications.

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Section: Introductionmentioning

confidence: 99%

Hydrothermal synthesis of zinc oxide nanoparticles using rice as soft biotemplate

Ramimoghadam

Hussein

Taufiq‐Yap

2013

Chemistry Central Journal

126

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“…Some of the biomolecules used in ZnO synthesis include gelatin, polyethylene glycol (PEG), , DNA, silk, albumen, urease, amino acids, ,, peptides, polyamines, cyclodextrin, egg-shell membranes, palm olein, arabic gum, , bacteria, , and viruses. − As shown in Figure , these biomolecules do not only interact with ZnO and form hybrid materials but also influence, in some instances, Zn(OH) 2 and ZnO forming systems either by catalyzing ZnO formation, ,− causing the stabilization of intermediate phases thereby inhibiting ZnO formation ,− and/or by, in some cases, also modifying ZnO morphology. ,,,,,,,,− Artificial ZnO-binding peptides (ZnO-BPs) identified using either CSD or PD libraries have particularly shown great potential and versatility in their ability to affect ZnO formation. There is growing interest in understanding ZnO-ZnO-BP interaction mechanisms, the consequences of such interactions, and possible applications that can be developed exploiting such interactions. ,,,− ,− …”

Section: Znomentioning

confidence: 99%

“…Examples of the effects of biomolecules on ZnO and stable Zn(OH) 2 forming systems: (i) catalysis of ZnO formation by phage display (PD) identified peptide ET-17, ET-17 fused to collagen triple helix, spider silk peptide, polyamine, ZP-1 (GAMHLPWHMGTL), and silk fibroin . (ii) Modification of ZnO morphology by PD peptides (ET-17, G-12, GT-16, and EC-12), DNA, silk fibroin, arabic gum, gelatin, − urease, amino acids, and microorganisms. (iii) Suppression of ZnO formation by PD peptides and amino acids, and (iv) formation of hybrid materials such as ZnO-Au NPs-Nafion-horseradish peroxidase (HRP)-modified glass carbon electrode nanocomposite, Au Np-anti-immunoglobulin G (IgG) conjugates, and Fe 3 O 4 -ZnO core–shell nanoparticles (CSN) …”

Section: Znomentioning

confidence: 99%

Interactions between Metal Oxides and Biomolecules: from Fundamental Understanding to Applications

et al. 2018

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Metallo-oxide (MO)-based bioinorganic nanocomposites promise unique structures, physicochemical properties, and novel biochemical functionalities, and within the past decade, investment in research on materials such as ZnO, TiO 2 , SiO 2 , and GeO 2 has significantly increased. Besides traditional approaches, the synthesis, shaping, structural patterning, and postprocessing chemical functionalization of the materials surface is inspired by strategies which mimic processes in nature. Would such materials deliver new technologies? Answering this question requires the merging of historical knowledge and current research from different fields of science. Practically, we need an effective defragmentation of the research area. From our perspective, the superficial accounting of material properties, chemistry of the surfaces, and the behavior of biomolecules next to such surfaces is a problem. This is particularly of concern when we wish to bridge between technologies in vitro and biotechnologies in vivo. Further, besides the potential practical technological efficiency and advantages such materials might exhibit, we have to consider the wider long-term implications of material stability and toxicity. In this contribution, we present a critical review of recent advances in the chemistry and engineering of MO-based biocomposites, highlighting the role of interactions at the interface and the techniques by which these can be studied. At the end of the article, we outline the challenges which hamper progress in research and extrapolate to developing and promising directions including additive manufacturing and synthetic biology that could benefit from molecular level understanding of interactions occurring between inanimate (abiotic) and living (biotic) materials.

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“…[26] reported DNA molecules are used to control the ZnO morphological structures by adjusting the pH values. Han et al [27] have fabricated zinc oxide Nanoparticles (NPs) from natural silk material for photoluminescent property analysis. Nouroozi et al [28] have developed brush-like ZnO nanorods via bio template of albumen (Egg white) in the sol-gel method.…”

Section: Introductionmentioning

confidence: 99%

Green and sustainable preparation of flower-like ZnO nanostructures via soft bio-template approach for the enhancement of biomedical applications

Senthilkumar¹,

Nandhakumar

Priya

et al. 2021

Appl. Phys. A

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Investigation onthe biomedical applications of ower like Zinc Oxide (ZnO) nanostructures (NSs)synthesized by using aqueous extract of Oryza punctata (red rice) is reported for the rst time. For the sustainable preparation of ZnO NSs, the precursors zinc nitrate and the rice extract act as the biotemplate material. The powder X-ray diffraction analysis demonstrates the crystallographic structure and purity of the bio-prepared ZnO NSs. Fourier transform infrared spectral studies exhibits the existence of several functional groups in the rice extract and synthesized ZnO NSs. The FT-Raman spectroscopy analysis used to detect the presence of the defects in the synthesized material. The UV absorption onset shows the peaks at 270 nm & 370 nm for rice extract and ZnO NSs, respectively. The optimal energy bandgap value for the ZnO NSs was found to be 3.29 eV. The zinc oxygen vacancies, zinc interstitial and surface defects were determined by photoluminescence spectroscopy. The dynamic light scattering analysis reveals the material stability and average particle size distribution of the prepared ZnO NSs. The ower like morphology of the ZnO NSs was con rmed by eld emission scanning electron microscopy analysis. ZnO NSs were tested for cytotoxicity activity against MCF-7 cell line and antibacterial properties using two gram positive (Staphylococcus Aureus, Bacillus Subtilis) and two gram negative bacteria (Salmonella Paratyphi, Escherichia Coli). Signi cant antioxidant activity was studied by the bioprepared ZnO NSs against scavenging of DPPH (di(phenyl)-(2,4,6-trinitrophenyl)iminoazanium) free radicals. The ower like ZnO NSs showed a signi cant anti-arthritic activity which exhibited a maximum inhibition of protein denaturation (78.94±1.62 %) and membrane protective activity (81.12±1.25 %) at a dose of 0.5mg/mL concentration.

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Tuned morphologies of DNA-assisted ZnO struggling against pH

Cited by 7 publications

References 15 publications

Hydrothermal synthesis of zinc oxide nanoparticles using rice as soft biotemplate

Hydrothermal synthesis of zinc oxide nanoparticles using rice as soft biotemplate

Interactions between Metal Oxides and Biomolecules: from Fundamental Understanding to Applications

Green and sustainable preparation of flower-like ZnO nanostructures via soft bio-template approach for the enhancement of biomedical applications

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