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Nano material with zero-valent iron loaded on hollow graphene nanospheres and preparation method thereof

A technology of nanomaterials and nanospheres, applied in the field of nanomaterials, can solve problems such as high cost, incompleteness, and low efficiency, and achieve high recycling efficiency and promote efficient degradation

Pending Publication Date: 2021-08-27
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI +1
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  • Application Information

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Problems solved by technology

[0004] In view of this, the present invention provides a method for preparing nanomaterials loaded with zero-valent iron by graphene hollow nanospheres. Graphene hollow nanospheres loaded with zero-valent iron nanomaterials to solve the problems of low efficiency, high cost, incompleteness, and the need for additional Defects such as providing energy

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  • Nano material with zero-valent iron loaded on hollow graphene nanospheres and preparation method thereof
  • Nano material with zero-valent iron loaded on hollow graphene nanospheres and preparation method thereof
  • Nano material with zero-valent iron loaded on hollow graphene nanospheres and preparation method thereof

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[0032] In a first aspect, the present invention provides a method for preparing a nanomaterial of graphene hollow nanospheres loaded with zero-valent iron, comprising the following steps:

[0033] Preparation of SiO 2 @GO nanospheres: Provide SiO 2 nanospheres and graphene oxide, the SiO 2 Nanospheres and graphene oxide were blended in deionized water, and the SiO 2 The mixture of nanospheres and graphene oxide was transferred to a water bath for ultrasonication for 6-48 hours, centrifuged after ultrasonication, and dried in vacuum to obtain SiO 2 @GO nanosphere;

[0034] Preparation of SiO 2 @rGO / nZVI nanospheres: Provide nano-zero-valent iron and disperse it in deionized water to obtain the first dispersion system, and then add SiO to the first dispersion system 2 @GO nanospheres and reducing agent, after stirring to obtain the second dispersion system, transfer the second dispersion system to a water bath for ultrasonication for 6-48 hours, after ultrasonication, centr...

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Abstract

The invention provides a nano material with zero-valent iron loaded on graphene hollow nanospheres and a preparation method of the nano material. The nano material comprises the following steps: preparing SiO2 @ GO nanospheres, preparing SiO2@ rGO / nZVI nanospheres, and preparing the nano material of the graphene hollow nanospheres loaded with the zero-valent iron. According to the preparation method of the nano material with the zero-valent iron loaded on the graphene hollow nanospheres, the nano material has an extremely large specific surface area and extremely high electron conductivity, and the catalytic degradation activity of the zero-valent iron nano material on a disinfection by-product N-nitrosodimethylamine is favorably exerted. Besides, the zero-valent iron nano-material is loaded on the stable graphene hollow nanospheres, so that the zero-valent iron nano-material can be effectively prevented from self-agglomeration and being corroded in the process of catalytically degrading N-nitrosodimethylamine, and the repeatable degradation efficiency of the nano-material with the zero-valent iron loaded on the graphene hollow nanospheres is improved.

Description

technical field [0001] The invention relates to the technical field of nanomaterials, in particular to a nanomaterial of graphene hollow nanospheres loaded with zero-valent iron, and the invention also relates to a preparation method of the nanomaterial of graphene hollow nanospheres loaded with zerovalent iron. Background technique [0002] N-nitrosodimethylamine (NDMA) is a carcinogenic and mutagenic N-nitrosamine. Since 1989, when NDMA was first detected as a disinfection by-product in drinking water in Ontario, Canada, nearly 30 years later, researchers have found that NDMA-based nitrosamine disinfection by-products are widely distributed around the world. Commonly found in drinking water plants and sewage treatment plants. NDMA is an emerging disinfection by-product, which can be produced in the process of chlorine disinfection or chloramine disinfection of drinking water and wastewater. The highest concentration of NDMA detected in drinking water and wastewater treatm...

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Application Information

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IPC IPC(8): B01J23/745B01J21/18B01J37/06B01J35/10B01J35/02C01B33/18C01B32/198C02F1/72C02F101/34C02F101/38
CPCB01J23/745B01J21/18B01J37/06B01J37/0009C01B33/18C01B32/198C02F1/722C02F1/725C02F2101/34C02F2101/38C02F2305/023B01J35/23B01J35/50B01J35/40B01J35/61
Inventor 吴清平孙铭古其会张友雄张菊梅郭伟鹏吴慧清
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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