Characterization of CuO-bacterial cellulose nanohybrids fabricated by in-situ and ex-situ impregnation methods

Almasi, Hadi; Mehryar, Laleh; Ghadertaj, Ali

doi:10.1016/j.carbpol.2019.114995

Cited by 57 publications

(20 citation statements)

References 52 publications

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“…Ultrasonic treatment allows the penetration of copper salts and the growth of CuO crystals inside the substrate. While in the precipitation method, there is no stimulant to aid the reagent penetration into the BC structure (Almasi et al, 2019). Similar results have been reported for the effect of ultrasound treatment on ZnO-BC nanohybrids (Shahmohammadi Jebel & Almasi, 2016).…”

Section: Loading Capacity Of Nanohybridssupporting

confidence: 81%

“…The main challenge posed by the application of NPs in wastewater treatment is their lower solubility and nonhomogenously distribution in water as well as lower reusability and laborious recovery (Almasi, Mehryar, & Ghadertaj, 2019). Recently, the nanostructured metal-polymer nanohybrids have drawn considerable attention as emerging subject in a wide variety of areas including water purification, food packaging, and wound healing.…”

Section: Research Articlementioning

confidence: 99%

“…There are no reports on the fabrication and using of BC-supported CuO nanohybrids for the water purification applications. As the first step of this research, we fabricated the CuO-BC nanohybrids by ex situ and in situ methods (Almasi et al, 2019). Sonochemical and precipitation methods were used for the in situ synthesis of nanohybrids.…”

Section: Research Articlementioning

confidence: 99%

“…The preparation methods of nanohybrids have been fully described in our previous research (Almasi et al, 2019). Briefly, for the fabrication of in situ synthesized nanohybrids by the precipitation method, copper acetate (2.7 g) was mixed with 2 ml acetic acid and 600 ml ethylene glycol.…”

Section: Fabrication Of Nanohybridsmentioning

confidence: 99%

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Photocatalytic activity and water purification performance of in situ and ex situ synthesized bacterial cellulose‐CuO nanohybrids

Almasi

Mehryar

Ghadertaj

2020

Water Environment Research

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The aim of this research was synthesizing of bacterial cellulose (BC) nanohybrids by incorporation of CuO‐NPs and evaluation of their ability in the removing of microbial, heavy metals, and dyes pollutants from water. CuO‐BC nanohybrids were synthesized by two in situ (sonochemical and precipitation) methods and compared with ex situ synthesized nanohybrid. FE‐SEM images revealed that the growth of CuO‐NPs in the sonochemically synthesized in situ substrate is better. The ex situ nanohybrid had the highest loading capacity (27.17 μg/cm2) but the migration of CuO‐NPs from this substrate was higher than in situ ones. According to antimicrobial tests, 80% and 90% of initial population of E. coli and S. aureus, respectively, were removed after 6 hr contact of substrates with water. The potential of the substrates in the adsorption of lead and arsenic was about 60% after 24 hr. About 75% of methylene blue and methyl orange dyes were adsorbed into substrates after 6 hr. CuO doped substrates had the photocatalytic activity and caused to decrease the oxygen content about 4%–7% during 6 hr. In general, the reusability of ex situ synthesized substrate was lower than in situ nanohybrids. Sonochemically synthesized substrate was suggested as the best nanohybrid for water purification applications in terms of morphological properties and reusability. Practitioner points CuO‐BC nanohybrids were prepared by in‐situ and ex‐situ methods. Well distribution of NPs and slower release was achieved by in‐situ methods. Antimicrobial and photocatalytic activity of ex‐situ nanohybrid was higher than in‐situ ones. Dyes and heavy metals were removed successfully with nanohybrid substrates. Sonochemical in‐situ nanohybrid exhibited the best water purification performance.

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Section: Loading Capacity Of Nanohybridssupporting

confidence: 81%

Section: Research Articlementioning

confidence: 99%

Section: Research Articlementioning

confidence: 99%

Section: Fabrication Of Nanohybridsmentioning

confidence: 99%

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Photocatalytic activity and water purification performance of in situ and ex situ synthesized bacterial cellulose‐CuO nanohybrids

Almasi

Mehryar

Ghadertaj

2020

Water Environment Research

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“…This reduced adhesion was believed to be attributed to the increased hydrophobicity of the surface thereby decreasing the surface wettability to enhance antimicrobial performance by minimizing water contact; however, additional rationale for the antimicrobial was attributed to the positively charged surface interacting strongly with the negatively charged cell membranes leading to cell disruption but this did not seem to have the same effect on human HEK293 cells. In looking at bacterial cellulose composites with nanoparticles, groups have used CuO nanoparticle formation in a BC films by ex situ (ultrasonication of CuO dispersion with pellicle) and in situ (precipitation of CuO nanoparticles) synthesis methods and have shown the ex situ nanoparticle composite BC method to produce a more effective bactericidal product than the in situ method in reducing S. aureus and E. coli [133]. The related approaches were used by one of the same researchers from the aforementioned to form a BC pellicle with MgO nanoparticles, but this MgO composite with BC was found to have much higher bactericidal effects that for the case with the CuO nanoparticles [134].…”

Section: Biomedical Application Area Key Features Refmentioning

confidence: 99%

Engineering Bacterial Cellulose for Diverse Biomedical Applications

Sandhu¹,

Arpa²,

Chen³

et al. 2019

rpm

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Increasing interest in bacterial cellulose due to the huge potential which exists for the development of this new biomaterial for medical applications has been met with recent growth in research in engineering this unique microbial manufactured material. The mechanical properties, porosity, and biocompatibility of bacterial cellulose derived biomaterials are particularly attractive for use in wound healing, tissue engineering, and drug delivery applications. Advances in synthetic biology and soft materials engineering are pushing the value of this biomaterial to new levels. This review provides and in-depth discussion of these most recent approaches in processing as well as physical, chemical, and genetic modification of bacterial cellulose toward further improvement and expansion of its functionality. In addition, we provide specific attention to the marketed applications of the resulting engineered materials for medical research and conclude with prospective areas of consideration for expanding the clinical utility of this biomaterial to new directions.

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Composites of 2D Materials and Bacterial Cellulose for Sustainable Energy Storage and Environmental Remediation

Gusain,

Kumar,

Seyedin

et al. 2024

Advanced Sustainable Systems

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The ever‐increasing demand for sustainable energy sources and environment protection is the focus of significant scientific scrutiny worldwide. Advanced composite materials have been developed to help meet the energy demand and environmental sustainability. Researchers are drawn to the study of two‐dimensional (2D) materials/bacterial cellulose (BC) composites for energy and environmental applications due to the intriguing electrical, mechanical, electrochemical, and catalytic properties of 2D materials combined with the sustainability and biocompatibility of BC. In this review, the key strategies are explained to develop 2D materials/BC composites and highlight unique properties of such fascinating systems. The recent progress on the application of advanced 2D materials/BC composites in energy storage (supercapacitors and batteries) and environmental remediation (water treatment, antimicrobial activity, and environmental gas sensing) are explained in detail highlighting future outlooks and challenges in the field. This review is intended to serve as a valuable resource for researchers currently engaged in the study of 2D materials and/or BC for different applications and is expected to shape the upcoming research and industrial applications of emerging 2D materials/BC composites.

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Characterization of CuO-bacterial cellulose nanohybrids fabricated by in-situ and ex-situ impregnation methods

Cited by 57 publications

References 52 publications

Photocatalytic activity and water purification performance of in situ and ex situ synthesized bacterial cellulose‐CuO nanohybrids

Photocatalytic activity and water purification performance of in situ and ex situ synthesized bacterial cellulose‐CuO nanohybrids

Engineering Bacterial Cellulose for Diverse Biomedical Applications

Composites of 2D Materials and Bacterial Cellulose for Sustainable Energy Storage and Environmental Remediation

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