Spherical Bacterial Cellulose/TiO2 Nanocomposite with Potential Application in Contaminants Removal from Wastewater by Photocatalysis

Brandès, Ricardo; Trindade, Elizabeth Cristine Adam; Vanin, Daniel F.; Vargas, Vanessa M. M.; Carminatti, Claudimir Antonio; Al-Qureshi, H. A.; Recouvreux, Derce de Oliveira Souza

doi:10.1007/s12221-018-7798-7

Cited by 27 publications

(8 citation statements)

References 37 publications

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“…Furthermore, carbon can dope in the place of oxygen in the TiO 2 lattice [4]. Some researchers [35,62,63,67] have reported the synthesis of BCPs using the in situ method. Brandes et al [67] proposed an in situ approach to insert TiO 2 in the bacterial cellulose matrix.…”

Section: In-situ Methodsmentioning

confidence: 99%

“…Some researchers [35,62,63,67] have reported the synthesis of BCPs using the in situ method. Brandes et al [67] proposed an in situ approach to insert TiO 2 in the bacterial cellulose matrix. Typically, bacterial cellulose hydrogel was suspended in H 2 SO 4 solution (65%), followed by dropwise addition of TiOSO 4 •H 2 SO 4 •H 2 O and constant stirring.…”

Section: In-situ Methodsmentioning

confidence: 99%

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Recent Progress in Biochar-Based Photocatalysts for Wastewater Treatment: Synthesis, Mechanisms, and Applications

Cui

Zhang

et al. 2020

Applied Sciences

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Biochar (BC) is a carbon-rich material produced from pyrolysis of biomass. In addition to its low toxicity, environmental compatibility, and low cost, BC has the desired advantages of well-developed mesoporous structure and abundant surface functional groups. In recent years, BC-based photocatalysts (BCPs) have played a significant role in many environmental fields. In this paper, we highlight the current progress and several exciting results of BCPs by focusing on their synthesis, characterization, mechanisms, and applications in wastewater treatment. Details on various preparation methods include sol–gel, hydrothermal/solvothermal, ultrasound, calcination, and in situ methods are summarized and discussed. The underlying mechanisms and the applications of BCPs for different semiconductors are reviewed. Furthermore, some future trends and potentials are outlined.

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Section: In-situ Methodsmentioning

confidence: 99%

Section: In-situ Methodsmentioning

confidence: 99%

Recent Progress in Biochar-Based Photocatalysts for Wastewater Treatment: Synthesis, Mechanisms, and Applications

Cui

Zhang

et al. 2020

Applied Sciences

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“…Also, good mechanical parameters and higher crystallinity have proposed BC as a promising candidate for the immobilization of CuO-NPs and eventually its application in water purification (Almasi, Jafarzadeh, & Mehryar, 2018). Several NPs have been impregnated into BC membrane including MgO (Mirtalebi, Almasi, & Khaledabad, 2019), ZnO (Shahmohammadi Jebel & Almasi, 2016), Au (Lv et al, 2018), Ag (Shao et al, 2015), and TiO 2 (Brandes et al, 2018).…”

Section: Research Articlementioning

confidence: 99%

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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“…8 BC composites including organic or inorganic materials such as polymers, metal or metal oxide nanoparticles have been produced with antibacterial properties. 9 For instance, the potential of sesame oil to impart antibacterial activities to BC has been confirmed. 10 Many studies were published concerning with the synthesis of bacterial cellulose/silver nanocomposites.…”

Section: Introductionmentioning

confidence: 98%

“…Recently, there have been an increased number of studies dealing with the incorporation of nanofillers for multifunctional properties in medical, tissue engineering, wound dressing, drug delivery, bioengineering, and food applications 8 . BC composites including organic or inorganic materials such as polymers, metal or metal oxide nanoparticles have been produced with antibacterial properties 9 . For instance, the potential of sesame oil to impart antibacterial activities to BC has been confirmed 10 .…”

Section: Introductionmentioning

confidence: 99%

Innovative preparation of bacterial cellulose/silver nanocomposite hydrogels: In situ green synthesis, characterization, and antibacterial properties

Sarkandi

Montazer

Harifi

et al. 2020

J of Applied Polymer Sci

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In this study, an innovative in situ green strategy was applied to prepare bacterial cellulose/silver nanocomposites using green tea as a substrate for the fermentation of Acetobacter xylinum bacteria and a reducing agent for the in situ synthesis of silver nanoparticles. The samples were analyzed by different characterization tests including field emission scanning electron microscopy (FESEM), X-ray diffraction analysis (XRD), UV-vis spectroscopy, atomic absorption spectroscopy, and ATR. The results indicated the excellent antibacterial activities with 100% bacterial reduction percentage and inhibition zones of 2.6 and 2.8 cm against S. aureus and E. coli, respectively. Moreover, water absorption percentage and vertical wicking measurements supported the hydrogel properties of the prepared bio-cellulose/silver nanocomposites. Finding of this research suggested the potential of the proposed green route for preparing antibacterial BC which can be regarded as a candidate for future wound healing applications.

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Spherical Bacterial Cellulose/TiO2 Nanocomposite with Potential Application in Contaminants Removal from Wastewater by Photocatalysis

Cited by 27 publications

References 37 publications

Recent Progress in Biochar-Based Photocatalysts for Wastewater Treatment: Synthesis, Mechanisms, and Applications

Recent Progress in Biochar-Based Photocatalysts for Wastewater Treatment: Synthesis, Mechanisms, and Applications

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

Innovative preparation of bacterial cellulose/silver nanocomposite hydrogels: In situ green synthesis, characterization, and antibacterial properties

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