Synthesis of ZnO nanostructures via low temperature solution process for photocatalytic degradation of rhodamine B dye

Alvi, M. A.; Al-Ghamdi, Ahmed A.; ShaheerAkhtar, M.

doi:10.1016/j.matlet.2017.06.005

Cited by 59 publications

(21 citation statements)

References 24 publications

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“…After 1 h UV irradiation, ZnO@PVDF Janus membrane degraded nearly 73.25% of RhB, while the self‐degradation of RhB was 5.72%. The degradation efficiency of ZnO@PVDF Janus membrane was 98.93% after 2 h exposure, which is comparable to previous studies . After five cycles, the degradation efficiency of ZnO@PVDF Janus membrane remained about 95% (Figure c) and there was no noticeable change of the membrane surface with ZnO nanowires (Figure S3, Supporting Information).…”

Section: Resultssupporting

confidence: 88%

Buoyancy Assisted Janus Membrane Preparation by ZnO Interfacial Deposition for Water Pollution Treatment and Self‐cleaning

Pan

Shou

et al. 2019

Adv Materials Inter

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Water pollution, such as marine oil spill and organic chemicals pollution, is a worldwide challenge. To advance this emerging field, Janus membranes with asymmetric wettability, for oil–water separation, similitude of diode in electrocircuit, are fabricated by leveraging the buoyancy of poly(vinylidene fluoride) nanofiber on water/air interface. ZnO nanowires are in situ grown on the surface of nanofibers immersed in the solution, mimicking a nanoscale Setaria viridis structure. Such Janus membrane shows a good hydrophilicity/underwater oleophobicity on ZnO nanowires modified side and exhibits opposite hydrophobicity on the other side. Due to the side‐specific morphologies, this membrane can work either as “water‐removing” type or “oil‐removing” type filter as a diode in fluid. The membrane shows excellent permeability with the water and oil flux up to 1210 and 7653 L m−2 h−1, respectively, only driven by gravity. The durability of functional membrane is excellent and separation efficiency is higher than 97.24% after ten cycling tests. Furthermore, the hydrophilic side demonstrates an excellent photocatalytic performance over the degradation of rhodamine B dye, as self‐cleaning properties. This Janus membrane is to be an excellent candidate for wastewater remediation, both oil/water separation and organic pollutant decomposition.

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Section: Resultssupporting

confidence: 88%

Buoyancy Assisted Janus Membrane Preparation by ZnO Interfacial Deposition for Water Pollution Treatment and Self‐cleaning

Pan

Shou

et al. 2019

Adv Materials Inter

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“…In this study, the nano-rod ZnO has a relatively large surface area and pore volume, the ZnO exhibits the spherical ZnO nanoparticles in the structure as presented in Figure 1. These may result in higher degradation efficiency and reaction rate as compared to other morphologies (21)(22)(23)(24)(25) , as seen Table 2. Since band gap energy (3.16 eV), the nano-rod ZnO show high reaction rate and degradation efficiency with dyes, as present in Figures 4 and 5.…”

Section: Comparison Of Degradation Of Dyes By As-prepared Zno With Otmentioning

confidence: 99%

Facile and fast preparation of Nano-rod ZnO for photocatalytic application under low intensity of UV light irradiation

Do¹,

Vu²

2020

IJST

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Objective: This study aims to degrade the organic dyes in aqueous medium and low UV intensity by nano-rod ZnO. Methodology: The ZnO was prepared by a facile and fast method, as-synthesized ZnO was characterized by SEM, XRD, N 2 adsorption/desorption isotherm, and diffuse reflectance UV-vis. The composition of samples before and after calcination steps was analyzed by XRD. The catalytic performance of ZnO was evaluated by the degradation of dyes in aqueous solution under a low UV light irradiation. Finding: the precursor was completely transformed to ZnO at 400 • C. The ZnO was nanorod structure with the crystalline phase of hexagonal wurtzite. The degradation efficiency of ZnO for Janus Green B in 10 min was 96.8%, it was 95.8% in 40 min for Congo Red. The reaction kinetic of photodegradation of dyes was followed by the first-order kinetic model and the photodegradation mechanism of ZnO for dyes was proposed. Application/Improvement: The facile and fast method was developed for the synthesis of nano-rod ZnO, it could be applied for practical application in wastewater treatment.

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“…In some cases, they are even carcinogenic. 4 , 5 An example is rhodamine B ( RhB ), which is a typical fluorescent (xanthene) dye and is highly soluble in water. The carcinogenicity and toxicity, including neurotoxicity toward humans and animals, have been proven experimentally.…”

Section: Introductionmentioning

confidence: 99%

CelluPhot: Hybrid Cellulose−Bismuth Oxybromide Membrane for Pollutant Removal

Onwumere

Piątek

Budnyak

et al. 2020

ACS Appl. Mater. Interfaces

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The simultaneous removal of organic and inorganic pollutants from wastewater is a complex challenge and requires usually several sequential processes. Here, we demonstrate the fabrication of a hybrid material that can fulfill both tasks: (i) the adsorption of metal ions due to the negative surface charge, and (ii) photocatalytic decomposition of organic compounds. The bioinorganic hybrid membrane consists of cellulose fibers to ensure mechanical stability and of Bi 4 O 5 Br 2 /BiOBr nanosheets. The composite is synthesized at low temperature of 115 °C directly on the cellulose membrane (CM) in order to maintain the carboxylic and hydroxyl groups on the surface that are responsible for the adsorption of metal ions. The composite can adsorb both Co(II) and Ni(II) ions and the kinetic study confirmed a good agreement of experimental data with the pseudo-second-order equation kinetic model. CM/Bi 4 O 5 Br 2 /BiOBr showed higher affinity to Co(II) ions than to Ni(II) ions from diluted aqueous solutions. The bioinorganic composite demonstrates a synergistic effect in the photocatalytic degradation of rhodamine B (RhB) by exceeding the removal efficiency of single components. The fabrication of the biologic-inorganic interface was confirmed by various analytical techniques including scanning electron microscopy (SEM), scanning transmission electron microscopy with energy dispersive X-ray spectroscopy (STEM EDX) mapping, X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The presented approach for controlled formation of the bioinorganic interface between natural material (cellulose) and nanoscopic inorganic materials of tailored morphology (Bi–O–Br system) enables the significant enhancement of materials functionality.

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Synthesis of ZnO nanostructures via low temperature solution process for photocatalytic degradation of rhodamine B dye

Cited by 59 publications

References 24 publications

Buoyancy Assisted Janus Membrane Preparation by ZnO Interfacial Deposition for Water Pollution Treatment and Self‐cleaning

Buoyancy Assisted Janus Membrane Preparation by ZnO Interfacial Deposition for Water Pollution Treatment and Self‐cleaning

Facile and fast preparation of Nano-rod ZnO for photocatalytic application under low intensity of UV light irradiation

CelluPhot: Hybrid Cellulose−Bismuth Oxybromide Membrane for Pollutant Removal

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