Green synthesis of Cadmium Sulphide nanoparticles for the photodegradation of Malachite green dye, Sulfisoxazole and removal of bacteria

Munyai, S.; Tetana, Zikhona N.; Mathipa, Morongwa Mary; Ntsendwana, Bulelwa; Hintsho‐Mbita, Nomso C.

doi:10.1016/j.ijleo.2021.167851

Cited by 40 publications

(11 citation statements)

References 43 publications

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“…Except in a few cases in which external stabilizing chemicals have been applied, plant extracts serve as both a reductant and a stabilizer. AgNPs have been produced using a variety of plants, including medicinal plants, ordinary spices, some exotic weeds, plants that produce essential oils and alkaloids, etc. Moreover, these plants are utilized to modify the surface of silver nanoparticles, enhancing their capacity as photocatalysts and their removal effectiveness. Environmentally friendly nanoparticles made from plant extracts are preferred over chemically made ones used in water treatment.…”

Section: Molecularly Imprinted Polymers Used In Sample Preparation As...mentioning

confidence: 99%

Molecularly Imprinted Polymer-Based Adsorbents for the Selective Removal of Pharmaceuticals from Wastewater: Adsorption Kinetics, Isotherms, and Thermodynamics Studies

Nxumalo,

Mahlambi

2023

Ind. Eng. Chem. Res.

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The majority of pharmaceuticals are found in the environment as mixtures. However, a significant amount of these therapeutic compounds cannot be completely metabolized by the human body; thus, they are excreted through feces and urine and end up in wastewater treatment plants (WWTPs). The presence of pharmaceuticals and the degree to which they can be removed during wastewater treatment are now important research topics. Despite the adoption of various alternative technologies for the treatment of wastewater, the adsorption process is still regarded as a promising method due to its high efficiency, increased simplicity, and lower costs. Recent developments in the adsorption process involve the incorporation of an artificial molecularly imprinted polymer (MIP), which is a potent molecular receptor capable of selectively recognizing and removing pollutants. The MIP has advantageous characteristics, which include high affinity, predetermination, high stability, ease of preparation, and low cost. Notably, MIPs can be applied to the cleanup and preconcentration of analytes as the selective adsorbent of solid-phase extraction (SPE), magnetic solid phase extraction (MSPE), and dispersive solid-phase extraction (dSPE). Furthermore, MIPs can be produced as composite nanomaterials by employing nanoparticles (nanoMIP). The advancements of MIPs employed as sorbent materials for quantitative assessment and purification of pharmaceuticals in environmental water have been given most of the focus. Therefore, this study not only aims to present the fundamental ideas about the application of MIPs as sorbents but also gives an overview of the considerable initiatives made in recent years to enhance the performance of MIPs. Considering this, various current approaches to the development of MIP-based extraction techniques are detailed in the present review. This review also demonstrates how kinetics, thermodynamics, and isotherm models can be used to better understand the behavior of adsorbents and the adsorption process.

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Section: Molecularly Imprinted Polymers Used In Sample Preparation As...mentioning

confidence: 99%

Molecularly Imprinted Polymer-Based Adsorbents for the Selective Removal of Pharmaceuticals from Wastewater: Adsorption Kinetics, Isotherms, and Thermodynamics Studies

Nxumalo,

Mahlambi

2023

Ind. Eng. Chem. Res.

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“…Photocatalysis is a simple and efficient technology for photocatalysts to remove pollutants by stimulating its oxidation−reduction ability through light. The common photocatalytic particles include CdS [ 100 , 101 ], SnO 2 [ 102 , 103 ], AgCl [ 104 ], and ZnO [ 105 , 106 , 107 ]. Single particles have limited applications due to their own light absorption, the compounding of electron−hole pairs, and lack of specific surface area.…”

Section: Applications In Photocatalytic Degradation Of Water Pollutantsmentioning

confidence: 99%

Electrospun Porous Nanofibers: Pore−Forming Mechanisms and Applications for Photocatalytic Degradation of Organic Pollutants in Wastewater

et al. 2022

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Electrospun porous nanofibers have large specific surface areas and abundant active centers, which can effectively improve the properties of nanofibers. In the field of photocatalysis, electrospun porous nanofibers can increase the contact area of loaded photocatalytic particles with light, shorten the electron transfer path, and improve photocatalytic activity. In this paper, the main pore−forming mechanisms of electrospun porous nanofiber are summarized as breath figures, phase separation (vapor−induced phase separation, non−solvent−induced phase separation, and thermally induced phase separation) and post−processing (selective removal). Then, the application of electrospun porous nanofiber loading photocatalytic particles in the degradation of pollutants (such as organic, inorganic, and bacteria) in water is introduced, and its future development prospected. Although porous structures are beneficial in improving the photocatalytic performance of nanofibers, they reduce their mechanical properties. Therefore, strategies for improving the mechanical properties of electrospun porous nanofibers are also briefly discussed.

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“…The strong biological activity of the synthesised ZnO NPs can be attributed to the small size of the NPs, which translates to a large surface area and the secondary metabolites incorporated in the NPs. L. frutescens has also been investigated for the synthesis of NiO NPs [84], AgO NPs [85], ZnS NPs [86], CdS NPs [87], ZnO/SnO 2 NPs [88] and Ag NPs [89] for various applications such as photodegradation of organic dyes and pharmaceutical pollutants, antibacterial activity, and anticancer activity.…”

Section: Lessertia Montanamentioning

confidence: 99%

A Review of the Green Synthesis of ZnO Nanoparticles Utilising Southern African Indigenous Medicinal Plants

2022

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Metal oxide nanoparticles (NPs), such as zinc oxide (ZnO), have been researched extensively for applications in biotechnology, photovoltaics, photocatalysis, sensors, cosmetics, and pharmaceuticals due to their unique properties at the nanoscale. ZnO NPs have been fabricated using conventional physical and chemical processes, but these techniques are limited due to the use of hazardous chemicals that are bad for the environment and high energy consumption. Plant-mediated synthesis of ZnO NPs has piqued the interest of researchers owing to secondary metabolites found in plants that can reduce Zn precursors and stabilise ZnO NPs. Thus, plant-mediated synthesis of ZnO NPs has become one of the alternative green synthesis routes for the fabrication of ZnO NPs. This is attributable to its environmental friendliness, simplicity, and the potential for industrial-scale expansion. Southern Africa is home to a large and diverse indigenous medicinal plant population. However, the use of these indigenous medicinal plants for the preparation of ZnO NPs is understudied. This review looks at the indigenous medicinal plants of southern Africa that have been used to synthesise ZnO NPs for a variety of applications. In conclusion, there is a need for more exploration of southern African indigenous plants for green synthesis of ZnO NPs.

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Green synthesis of Cadmium Sulphide nanoparticles for the photodegradation of Malachite green dye, Sulfisoxazole and removal of bacteria

Cited by 40 publications

References 43 publications

Molecularly Imprinted Polymer-Based Adsorbents for the Selective Removal of Pharmaceuticals from Wastewater: Adsorption Kinetics, Isotherms, and Thermodynamics Studies

Molecularly Imprinted Polymer-Based Adsorbents for the Selective Removal of Pharmaceuticals from Wastewater: Adsorption Kinetics, Isotherms, and Thermodynamics Studies

Electrospun Porous Nanofibers: Pore−Forming Mechanisms and Applications for Photocatalytic Degradation of Organic Pollutants in Wastewater

A Review of the Green Synthesis of ZnO Nanoparticles Utilising Southern African Indigenous Medicinal Plants

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