Phyto-mediated synthesis of nickel oxide (NiO) nanoparticles using leaves’ extract of Syzygium cumini for antioxidant and dyes removal studies from wastewater

Riaz, Tauheeda; Munnwar, Ansa; Shahzadi, Tayyaba; Zaib, Maria; Shahid, Sammia; Javed, Mohsin; Iqbal, Shahid; Waqas, Muhammad; Khalid, Bilal; Awwad, S. Nasser; Ibrahium, A. Hala; Bajaber, Majed A.

doi:10.1016/j.inoche.2022.109656

Cited by 31 publications

(10 citation statements)

References 73 publications

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“…The doped NiO NPs exhibited the smaller size in comparison to the pure structures indicating that the doped structures should express better antioxidant and antibacterial applications than pure NPs. Riaz et al 30 synthesized NiO NPs using Syzygium cumini leaves extract and the absorbance value was observed in the range of 290–350 nm. The strong absorption peak associated with NiO NPs was observed at 320 nm which corresponded quite well with our findings.…”

Section: Resultsmentioning

confidence: 99%

Effect of Mo doping in NiO nanoparticles for structural modification and its efficiency for antioxidant, antibacterial applications

Alam

BaQais

Mir

et al. 2023

Sci Rep

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Novel molybdenum (Mo)-doped nickel oxide (NiO) Nanoparticles (NPs) were synthesized by using a simple sonochemical methodology and the synthesized NPs were investigated for antioxidant, and antibacterial applications. The X-ray diffraction (XRD) analysis revealed that the crystal systems of rhombohedral (21.34 nm) and monoclinic (17.76 nm) were observed for pure NiO and Mo-doped NiO NPs respectively. The scanning electron microscopy (SEM) results show that the pure NiO NPs possess irregular spherical shape with an average particle size of 93.89 nm while the Mo-doped NiO NPs exhibit spherical morphology with an average particle size of 85.48 nm. The ultraviolet–visible (UV–Vis) spectrum further indicated that the pure and Mo-doped NiO NPs exhibited strong absorption band at the wavelengths of 365 and 349 nm, respectively. The free radical scavenging activity of NiO and Mo-doped NiO NPs was also investigated by utilizing several biochemical assays. The Mo-doped NiO NPs showed better antioxidant activity (84.2%) towards ABTS. + at 200 µg/mL in comparison to their pure counterpart which confirmed that not only antioxidant potency of the doped NPs was better than pure NPs but this efficacy was also concentration dependant as well. The NiO and Mo-doped NiO NPs were further evaluated for their antibacterial activity against gram-positive (Staphylococcus aureus and Bacillus subtilis) and gram-negative (Pseudomonas aeruginosa and Escherichia coli) bacterial strains. The Mo-doped NiO NPs displayed better antibacterial activity (25 mm) against E. coli in comparison to the pure NPs. The synthesized NPs exhibited excellent aptitude for multi-dimensional applications.

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Section: Resultsmentioning

confidence: 99%

Effect of Mo doping in NiO nanoparticles for structural modification and its efficiency for antioxidant, antibacterial applications

Alam

BaQais

Mir

et al. 2023

Sci Rep

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“…In comparison with the NiO x -300 and NiO x -800 samples, the NiO x -500 sample exhibited substantially lower binding energy for the Ni–O and O–H peaks in O 1s spectra. From the UV–vis spectra from 300 to 800 °C (Figure S4), a strong band emerges at 300–330 nm, describing the electronic transition in the NiO semiconductor from the valence to the conduction band . The strong absorbance peak evident at ∼320 nm confirmed the growth of NiO with increasing temperature.…”

Section: Results and Discussionmentioning

confidence: 99%

“…From the UV−vis spectra from 300 to 800 °C (Figure S4), a strong band emerges at 300−330 nm, describing the electronic transition in the NiO semiconductor from the valence to the conduction band. 28 The strong absorbance peak evident at ∼320 nm confirmed the growth of NiO with increasing temperature. The Raman spectra (Figure S5) of various NiO x materials revealed the internal defects of the Ni/NiO composite.…”

Section: Structure and Morphology Of Nio Xmentioning

confidence: 91%

Oxygen Vacancy Enhanced Proton Transfer to Boost Carbamate Decomposition Kinetics with Tunable Heterostructure Ni/NiO

Li,

Xing,

Zhan

et al. 2024

ACS Catal.

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Catalytic carbamate decomposition is a feasible option for reducing the heat duty of amine solvent regeneration during the chemisorption of CO 2 capture; advanced material with excellent proton transfer and exchange performance is crucial to boost the decomposition kinetics in an alkaline environment. Here, we prepared magnetic heterostructure Ni/NiO nanocatalysts with tunable Ni(0) nanoparticles and NiO support. The heterointerface of the proposed materials creates abundant surface oxygen vacancies (OVs) and offers abundant reactive active sites ascribed to the special electron transfer scheme of Ni 0 −NiO. The generated surface hydroxyls and unsaturated coordinated Ni, respectively, provide transferable protons and electrons, involved in the deprotonation of RNH 3 + and C−N break of RNHCOO − . Thus, the obtained nanomaterials achieved considerably improved CO 2 desorption of up to 3 mmol/min for a CO 2 -saturated monoethanolamine solvent, representing a substantial (approximately 50%) increase over the catalyst-free case. The reinforcement mechanism of OV generation by the Ni/NiO heterostructure and the induced proton transfer were revealed through in situ spectroscopic measurement and theoretical calculations. The results verified that the OVs stimulate the production of surface hydroxyls and water-assisted proton hopping, providing an advantageous condition for carbamate decomposition.

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“…Riaz et. al [45] synthesis a nickel oxide (NiO) nanoparticle using the Syzygium cumini leaves as an anti-oxidant & dye particles remover from the waste water. Apart from, in order to remove dye particles and antioxidants from waste water, Riaz et al [46] synthesize nickel oxide (NiO) nanoparticles using Syzygium cumini leaves.…”

Section: Introductionmentioning

confidence: 99%

Exploring Ultrasonic‐Assisted Extraction and Eco‐Friendly Dyeing of Organic Cotton using Syzygium cumini Leaf Extracts

Akram,

Uddin Banna,

Mahmud

et al. 2024

ChemistrySelect

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The demand for natural dyes is increasing due to the negative environmental impacts of synthetic color. In fact, customers are becoming more concerned about their health and the environmentally friendly products. The aim of this research is to disclose the dye extraction process using the ultrasonic method and eco‐friendly dyeing of organic cotton knitted fabric. Initially, 10 g of Syzyguim cumini leaf powder was dissolved in 150 mL of purified water maintaining a 1 : 15 M : L ratio to extract the color. After that, the extracted dye solution was added to coloration bath following the M : L ratios of 1 : 16, 1 : 12, and 1 : 8 for producing dark, medium, and light shades, respectively. Post mordanting was done using natural lemon juice for colorfastness improvement. The color attributes were revealed by the spectrophotometric analysis. Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) were used to comprehend the successful relationship that exists among SCL dyes and organic cotton fibers, and the TGA analysis confirmed that dyed fabric is more stable than undyed fabric. Moreover, the colored sample‘s pH, formaldehyde level, and presence of forbidden Azo groups (aromatic amines) were examined. The test results revealed that very good to excellent color fastness properties were obtained and no harmful chemicals were detected in the dyed samples.

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Phyto-mediated synthesis of nickel oxide (NiO) nanoparticles using leaves’ extract of Syzygium cumini for antioxidant and dyes removal studies from wastewater

Cited by 31 publications

References 73 publications

Effect of Mo doping in NiO nanoparticles for structural modification and its efficiency for antioxidant, antibacterial applications

Effect of Mo doping in NiO nanoparticles for structural modification and its efficiency for antioxidant, antibacterial applications

Oxygen Vacancy Enhanced Proton Transfer to Boost Carbamate Decomposition Kinetics with Tunable Heterostructure Ni/NiO

Exploring Ultrasonic‐Assisted Extraction and Eco‐Friendly Dyeing of Organic Cotton using Syzygium cumini Leaf Extracts

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