CuO nanoparticles (CuO NPs) for water treatment: A review of recent advances

Ighalo, Joshua O.; Sagboye, Patience A.; Umenweke, Great; Ajala, Oluwaseun J.; Omoarukhe, Fredrick O.; Adeyanju, Comfort Abidemi; Ogunniyi, Samuel; Adeniyi, Adewale George

doi:10.1016/j.enmm.2021.100443

Cited by 70 publications

(45 citation statements)

References 93 publications

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“…The adsorbate can link with adsorbent by π-π (dispersive) interactions and hydrogen bonds when it is un-ionized (pH < pKa). When pH > pKa, however, the adsorbate is proto- Palm kernel shell AC 5.00 -Hydrogen bonding, π-π interaction [118] Protein from Moringa seeds 3.00 -Hydrogen bonding [25] Bentonite 3.00 -Electrostatic interaction [117] Hexagonal mesoporous silicate 5.00 -Hydrogen bonding [102] nated and remains in its ionic state, resulting in electrostatic interaction (acceptor-donor) attraction based on the adsorbate's ionic charge and the adsorbent's net surface charge (pHzc determines this) [126]. Adsorption of CBZ was practically unaffected by varying the pH [127].…”

Section: Mechanism Of Carbamazepine Adsorptionmentioning

confidence: 99%

Recent Advances on the Aqueous Phase Adsorption of Carbamazepine

et al. 2022

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Carbamazepine (CBZ) is a pharmaceutical compound used in medical practice. Due to the ecotoxicological risk of its presence in the aqueous environment, researchers have been investigating its removal by adsorption technique. The aim of this study is to review the works done on the removal of CBZ from water by adsorption. Carbon‐based materials were the best types of adsorbent for CBZ uptake (> 200 mg g−1). Molecularly imprinted polymer (MIP) and carbon nanotubes (CNTs) showed especially good adsorption capacities. The key mechanisms of CBZ adsorption were π‐π interaction, electrostatic interactions, hydrogen‐bonding and hydrophobic interactions. Classical equilibrium isotherm models like Langmuir and Freundlich were always best‐fits and kinetics modelling was best‐fit to the pseudo‐second order model. The thermodynamics modelling of CBZ adsorption showed it was spontaneous and endothermic for most adsorbents. Methanol and acetone were especially effective for the desorption of CBZ from adsorbents and can achieve > 90 % removal even after 4–5 cycles. CBZ competes favorably in adsorption systems with other pharmaceutical species due to the advantages of the hydrophobic effect and molecular size.

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Section: Mechanism Of Carbamazepine Adsorptionmentioning

confidence: 99%

Recent Advances on the Aqueous Phase Adsorption of Carbamazepine

et al. 2022

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“…These materials can be grouped according to their size, morphology, physical and chemical characteristics (Do et al, 2019). A good number of nanomaterials are carbon-based, ceramic, metallic, semi-conductors, polymeric and lipid based in nature (Ighalo et al, 2021). Nanomaterials are used in various forms for different ways achieving wastewater treatment to enhance environmental protection.…”

Section: Use Of Nanomaterials For Shrimp Aquaculture Wastewater Treatmentmentioning

confidence: 99%

Recent advances in Shrimp aquaculture wastewater management

Iber

Kasan

2021

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“…Copper oxide nanoparticles (CuO NPs) are most common due to the easy oxidizable property of copper. CuO is an important p‐type transition metal oxide semiconductor, with a strong absorption in the visible region, high carrier concentration and low toxicity, [6] which endow CuO effective catalytic activity in the reduction reactions [9] . Recently, the catalytic activity of CuO NPs have also been concerned due to their unique property caused by small size, high surface area and natural abundance of starting material for synthesis [10] .…”

Section: Introductionmentioning

confidence: 99%

“…CuO is an important p-type transition metal oxide semiconductor, with a strong absorption in the visible region, high carrier concentration and low toxicity, [6] which endow CuO effective catalytic activity in the reduction reactions. [9] Recently, the catalytic activity of CuO NPs have also been concerned due to their unique property caused by small size, high surface area and natural abundance of starting material for synthesis. [10] Due to its good redox performance, suitable energy band structure, abundant earth materials, economic and environmental friendliness, it is regarded as an effective substitute for precious metal catalysts.…”

Section: Introductionmentioning

confidence: 99%

Exploring the Spindle‐Shaped Copper Oxide Nanoparticles as Cost‐Effective Catalyst

et al. 2022

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Appropriate purification of the polluted water is a sustainable and significant work. The hydrogenation of 4‐nitrophenol (4‐NP) is an invaluable process by transforming toxic nitrophenol to serviceable industrial raw material 4‐aminophenol (4‐AP). Suffering the limit of high‐cost precious metal as catalyst, the design and exploring cheap and efficient catalyst is urgently needed, to promote this informative process. Here, we propose a simple and economical synthesis route to synthesize spindle‐shaped CuO nanoparticles (S‐CuO NPs). XRD, SEM, HRTEM and ultraviolet‐visible spectroscopy were used to characterize the structure, morphology and catalytic performance of the prepared nanoparticles. In the presence of NaBH4 as a reducing agent, the reduction can be completed in only 90 seconds by using S‐CuO NPs as catalyst, with a good rate constant (k) of 3.774×10−2 s−1. In view of the fact positive surface charge of S‐CuO NPs promotes the occurrence of hydride transfer phenomenon, this mechanism is discussed. The conclusion shows that the prepared S‐CuO NPs have good catalytic activity, can be used as a mild and effective catalyst for the reduction of 4‐NP with good reusability, and have potential applications in catalytic applications.

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CuO nanoparticles (CuO NPs) for water treatment: A review of recent advances

Cited by 70 publications

References 93 publications

Recent Advances on the Aqueous Phase Adsorption of Carbamazepine

Recent Advances on the Aqueous Phase Adsorption of Carbamazepine

Recent advances in Shrimp aquaculture wastewater management

Exploring the Spindle‐Shaped Copper Oxide Nanoparticles as Cost‐Effective Catalyst

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