Exploring the enhanced catalytic performance on nitro dyes via a novel template of flake-network Ni-Ti LDH/GO in-situ deposited with Ag3PO4 NPs

Deng, Huizhen; Yin, Juanjuan; Ma, Jinming; Zhou, Jingxin; Zhang, Lexin; Gao, Lili; Jiao, Tifeng

doi:10.1016/j.apsusc.2020.148821

Cited by 86 publications

(22 citation statements)

References 53 publications

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“…Adsorption has a high removal efficiency, simple operation and low cost, so it has emerged as the best way to remove chromium from wastewater. Recently, since reducing the levels of toxic substances in aquatic ecosystems and promoting water reuse after treatment has become more popular, calls to use nanomaterials for environmental remediation have gained much momentum [3][4][5]. Until now, various materials have been successfully used for Cr(VI) removal from wastewater including iron nanoparticles [6], graphene oxide [7], carbon nanotubes [8], and metal-organic frameworks(MOFs) [9].…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis of Iron Nanoparticles Using Green Tea and Its Removal of Hexavalent Chromium

Hao

Zhang

et al. 2021

Nanomaterials

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Chromium (VI) is a ubiquitous groundwater contaminant and it is dangerous to both ecological and human health. Iron nanoparticles (nFe) have a large specific surface area and they are highly efficient in removing chromium (VI) from aqueous solution. However, since the traditional reductive synthesis of nFe is relatively expensive and often causes secondary pollution, it is necessary to develop a low-cost green synthetic method using plant extracts. Synthetic conditions are important for obtaining highly active chromium-removing nanomaterials. In this paper, a green tea extract was used to prepare nFe and the effects of synthetic conditions on subsequent remediation performance were investigated. The optimal conditions included a green tea extract/Fe2+ ratio of 1:2 (91.6%), a green tea extract temperature of 353 K (88.3%) and a synthetic temperature of 298 K (88.1%). Advanced material characterization techniques, including XPS, SEM-EDS, TEM, and Brunauer–Emmett–Teller (BET) confirmed that the average particle size was between 50–80 nm, with a specific surface area of 42.25 m2·g−1. Furthermore nFe had a core-shell structure, where Fe (0) constituted the core and a shell was composed of iron oxide. Finally, a mechanism for synthesizing nFe by green tea extract was proposed, providing a theoretical basis for optimized synthetic conditions for preparing nFe when using green tea extract.

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Section: Introductionmentioning

confidence: 99%

Green Synthesis of Iron Nanoparticles Using Green Tea and Its Removal of Hexavalent Chromium

Hao

Zhang

et al. 2021

Nanomaterials

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“…The previous reports elucidated that graphene can accelerate the adsorption of 4-NP to the surface of the catalyst, reduce the induction and improve the rate of the reaction. 11,12 UV-vis spectroscopy can intuitively observe its interaction, 37 so we took scanning of GO, 4-NP and rGO + 4-NP solutions, the results were shown in Fig. S8.…”

Section: Resultsmentioning

confidence: 99%

“…One of the methods was the combination of GO or rGO with metal/microorganism to enhance the catalytic activity. Graphene is a two-dimensional material with large specic surface area and possesses many binding sites on the surface, which is benecial to x homodispersed nanoparticles 10 and enhance the adsorption of pollutants to shorten the induction period of the reaction, such as 4-NP, 11,12 dyes, 13,14 etc. Therefore, the addition of GO could improve the catalytic activity and stabilize metal NPs on the metal/microorganism catalysts.…”

Section: Introductionmentioning

confidence: 99%

Construction of stable bio-Pd catalysts for environmental pollutant remediation

et al. 2021

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“…In this regard, layered double hydroxide (LDH)/polymer nanocomposites belong to an important class of polymer/layered inorganic nanocomposites because they have significantly improved thermal stability and physical properties 13 – 19 . LDH has adjustable sheet-like structure and can be synthesized by the following methods: urea hydrolysis, co-precipitation, hydrothermal synthesis, simultaneous precipitation, and ion exchange 20 – 23 . LDH laminates are composed of metal cations and hydroxides, in which anions are placed between the layers, i.e.…”

Section: Introductionmentioning

confidence: 99%

Design and preparation of nanoarchitectonics of LDH/polymer composite with particular morphology as catalyst for green synthesis of imidazole derivatives

Ghanbari

Ghafuri

2022

Sci Rep

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This paper was designed and prepared a new nanoarchitectonics of LDH/polymer composite with specific morphology. For this purpose, CTAB surfactant was used to control the morphology of layered double hydroxide (LDH) and to prepare LDH/polymer nanocomposites (LDH–APS–PEI–DTPA). The polymer was synthesized using diethylenetriaminepentaacetic acid (DTPA), polyethylenimine and used with LDH to form a nanocomposite with high thermal stability. Subsequently, the prepared nanocomposite was identified using FTIR, EDX, TGA, XRD, FESEM, and BET techniques. In addition, the prepared LDH–APS–PEI–DTPA nanocomposite was used as a heterogeneous and recyclable catalyst for the synthesis of imidazole derivatives under green conditions. The results showed that the LDH–APS–PEI–DTPA nanocomposite benefit from suitable morphology, simple preparation, high catalytic activity, and high surface area. Also, the proposed LDH–APS–PEI–DTPA heterogeneous catalyst showed high stability and reusability for five consecutive runs which was consistent with the principles of green chemistry.

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Exploring the enhanced catalytic performance on nitro dyes via a novel template of flake-network Ni-Ti LDH/GO in-situ deposited with Ag3PO4 NPs

Cited by 86 publications

References 53 publications

Green Synthesis of Iron Nanoparticles Using Green Tea and Its Removal of Hexavalent Chromium

Green Synthesis of Iron Nanoparticles Using Green Tea and Its Removal of Hexavalent Chromium

Construction of stable bio-Pd catalysts for environmental pollutant remediation

Design and preparation of nanoarchitectonics of LDH/polymer composite with particular morphology as catalyst for green synthesis of imidazole derivatives

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