نتایج جستجو برای: fe3o4 go nh2

تعداد نتایج: 92954  

2015
Xiaoling Yang Wei Chen Jianfei Huang Ying Zhou Yihua Zhu Chunzhong Li

Herein, a ternary nanocomposite with TiO2 nanoparticles anchored on reduced graphene oxide (rGO)-encapsulated Fe3O4 spheres (Fe3O4@rGO@TiO2) is presented as a high efficient heterogeneous catalyst for photo-Fenton degradation of recalcitrant pollutants under neutral pH. Fe3O4@rGO@TiO2 was synthesized by depositing TiO2 nanoparticles on the surface of the Fe3O4 spheres wrapped by graphene oxide ...

2017
Wenxia Wang Kaijun Xiao Liang Zhu Yurong Yin Zhaomei Wang

A facile, robust approach to the synthesis of Fe3O4/rGO/TiO2 nanocomposites is described. The synthesis involves two major steps: (1) preparation of Fe3O4/GO by an electrostatic self-assembly method; (2) deposition of TiO2 on the surface of the Fe3O4/rGO nanocomposite via a hydrothermal method. The asprepared Fe3O4/rGO/TiO2 photocatalyst exhibited an enhanced photocatalytic activity for the deg...

بسیاری از پسابهای صنعتی حاوی آلاینده‌های کاتیونی متنوعی از جمله فلزات‌ سنگین و رنگ‌های آلی با ساختارهای تجریه‌ناپذیر هستند که تهدید جدی برای سلامت عمومی و محیط زیست به‌شمار می‌روند. در مطالعه حاضر نانوجاذب‌های‌ اکسید گرافن (GO) و اکسید گرافن اصلاح شده با 3-آمینو پروپیل ‌تری ‌اتوکسی‌ سیلان (GO-NH2) به منظور حذف یونهای فلزی سرب (Pb2+)، کادمیوم (Cd2+) و رنگ کاتیونی متیلن‌بلو (MB) در محلولهای آبی د...

Journal: :Journal of Electrochemical Science and Engineering 2021

A simple strategy for determination of hydroxylamine based on Fe3O4 nanoparticles function­nalized by [2-(4-((3-(trimethoxysilyl)propylthio)methyl)1-H1,2,3-triazol-1-yl)acetic­acid] (FNPs) and graphene oxide (GO) modified screen-printed electrode (SPE), denoted as (Fe3O4 FNPs/GO/SPE), is reported. The electrochemical behavior was investigated at Fe3O4FNPs/GO/SPE cyclic voltammetry (CV), differe...

Journal: :Membranes 2023

Porous low-pressure membranes have been used as active in water treatment and support for thin-film composite desalination gas separation applications. In this article, microfiltration polysulfone (PSf)mixed-matrix (MMM) containing amine-functionalized graphene oxide (GO-NH2) were fabricated via a phase inversion process characterized using XPS, SEM, AFM, DMA, XRD, contact angle measurements. T...

Journal: :Environmental Science and Pollution Research 2021

This study focused on the feasibility of using Fe3O4/graphene oxide (FGO) nanocomposites as heterogeneous catalysts for advanced treatment real industrial wastewater. FGO with different graphene (GO) ratios were synthesized by coprecipitating iron salts onto GO sheets in basic solution. The characterization resulting material structures and functionalities was performed a range analytical techn...

Journal: :Nanocomposites 2022

Dopamine concentration abnormalities in the body can cause various disorders and diseases such as Parkinson's, Tourette's syndrome, depression. In this study, graphene oxide (GO) was combined with Fe3O4 to sensitively selectively detect dopamine. The performance evaluated by cyclic voltammetry (CV) differential pulse (DPV) methods. results of testing CV on solution [Fe(CN)6] showed that a modif...

Journal: :Chemosensors 2023

The detection of bifenthrin is closely related to the adsorption SERS substrates. In this study, superparamagnetic Fe3O4@Au MNPs coated with GO were used detect and enrichment molecules benzene rings. Firstly, thermal solvent method synthesized Fe3O4 magnetic nanoparticles (MNPs) a particle size ~250 nm. Next, polyethylene imide (PEI) was as an intermediate layer modify surface form positively ...

Journal: :Adsorption Science & Technology 2022

The treatment of Sb (III) wastewater produced from mining activities is uniquely challenging and has therefore garnered increasing attention. Here, an amino-modified zirconium-based metal-organic framework material (UiO-66-NH2) its composites were loaded onto graphene oxide (GO@UiO-66-NH2) via the hydrothermal method, after which these materials used to adsorb in mine wastewater. effects adsorp...

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