The Experts below are selected from a list of 132 Experts worldwide ranked by ideXlab platform
Rajandrea Sethi - One of the best experts on this subject based on the ideXlab platform.
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synthesis of eco compatible bimetallic silver iron nanoparticles for water remediation and reactivity assessment on bromophenol blue
2019Co-Authors: Andrea Gallo, Carlo Bianco, Tiziana Anna Elisabetta Tosco, Alberto Tiraferri, Rajandrea SethiAbstract:Abstract In the last decade, zero-valent iron nanoparticles (nZVI) have been applied for groundwater remediation and they proved to be effective towards a wide range of contaminants, both organic and inorganic. One of the critical aspects related to the synthesis of this material concerns the use of borohydride, which increases the cost of the final product and generates toxic borates. In this paper, a new synthesis method of bimetallic nanoscale zero-valent silver/iron (nZVSI), its properties and its reactivity towards a model compound are presented. The novel synthesis protocol employs benign hydrosulfite as reducing agent and it is of easy implementation and scalability. The resulting nanoparticles have narrow size distribution and show appropriate colloidal stability. They consist of a core of zerovalent iron and a thin shell of iron oxide, while silver is homogeneously distributed within the material. The nanoparticles showed effective reactivity, able to degrade bromophenol blue with suitable kinetics and using a low amount of material. Additionally, the bimetallic nanomaterial significantly outperformed nanometric zero-valent silver (nZVS) and nZVI obtained with the same protocol. The proposed synthesis would allow to significantly reduce the environmental and health impact of the stage prior to product application via injection in the subsoil. Also, the simplicity and the safety of the proposed synthesis procedure would allow the production of the bimetallic reactant directly on-site, thus streamlining the remediation process and maximizing its efficiency.
Andrea Gallo - One of the best experts on this subject based on the ideXlab platform.
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synthesis of eco compatible bimetallic silver iron nanoparticles for water remediation and reactivity assessment on bromophenol blue
2019Co-Authors: Andrea Gallo, Carlo Bianco, Tiziana Anna Elisabetta Tosco, Alberto Tiraferri, Rajandrea SethiAbstract:Abstract In the last decade, zero-valent iron nanoparticles (nZVI) have been applied for groundwater remediation and they proved to be effective towards a wide range of contaminants, both organic and inorganic. One of the critical aspects related to the synthesis of this material concerns the use of borohydride, which increases the cost of the final product and generates toxic borates. In this paper, a new synthesis method of bimetallic nanoscale zero-valent silver/iron (nZVSI), its properties and its reactivity towards a model compound are presented. The novel synthesis protocol employs benign hydrosulfite as reducing agent and it is of easy implementation and scalability. The resulting nanoparticles have narrow size distribution and show appropriate colloidal stability. They consist of a core of zerovalent iron and a thin shell of iron oxide, while silver is homogeneously distributed within the material. The nanoparticles showed effective reactivity, able to degrade bromophenol blue with suitable kinetics and using a low amount of material. Additionally, the bimetallic nanomaterial significantly outperformed nanometric zero-valent silver (nZVS) and nZVI obtained with the same protocol. The proposed synthesis would allow to significantly reduce the environmental and health impact of the stage prior to product application via injection in the subsoil. Also, the simplicity and the safety of the proposed synthesis procedure would allow the production of the bimetallic reactant directly on-site, thus streamlining the remediation process and maximizing its efficiency.
Bunshi Fugetsu - One of the best experts on this subject based on the ideXlab platform.
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graphene oxide adsorption enhanced by in situ reduction with sodium hydrosulfite to remove acridine orange from aqueous solution
2012Co-Authors: Ling Sun, Bunshi FugetsuAbstract:Abstract Graphene oxide (GO) is a highly effective adsorbent, and its absorbing capability is further enhanced through its in situ reduction with sodium hydrosulfite as the reductant. Acridine orange is the selected target to eliminate with GO as the adsorbent. Under identical conditions, GO without the in situ reduction showed a maximum adsorption capacity of 1.4 g g −1 , and GO with the in situ reduction provided a maximum adsorption capacity of 3.3 g g −1 . Sodium hydrosulfite converts carbonyl groups on GO into hydroxyl groups, which function as the key sites for the adsorption enhancement.
Alberto Tiraferri - One of the best experts on this subject based on the ideXlab platform.
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synthesis of eco compatible bimetallic silver iron nanoparticles for water remediation and reactivity assessment on bromophenol blue
2019Co-Authors: Andrea Gallo, Carlo Bianco, Tiziana Anna Elisabetta Tosco, Alberto Tiraferri, Rajandrea SethiAbstract:Abstract In the last decade, zero-valent iron nanoparticles (nZVI) have been applied for groundwater remediation and they proved to be effective towards a wide range of contaminants, both organic and inorganic. One of the critical aspects related to the synthesis of this material concerns the use of borohydride, which increases the cost of the final product and generates toxic borates. In this paper, a new synthesis method of bimetallic nanoscale zero-valent silver/iron (nZVSI), its properties and its reactivity towards a model compound are presented. The novel synthesis protocol employs benign hydrosulfite as reducing agent and it is of easy implementation and scalability. The resulting nanoparticles have narrow size distribution and show appropriate colloidal stability. They consist of a core of zerovalent iron and a thin shell of iron oxide, while silver is homogeneously distributed within the material. The nanoparticles showed effective reactivity, able to degrade bromophenol blue with suitable kinetics and using a low amount of material. Additionally, the bimetallic nanomaterial significantly outperformed nanometric zero-valent silver (nZVS) and nZVI obtained with the same protocol. The proposed synthesis would allow to significantly reduce the environmental and health impact of the stage prior to product application via injection in the subsoil. Also, the simplicity and the safety of the proposed synthesis procedure would allow the production of the bimetallic reactant directly on-site, thus streamlining the remediation process and maximizing its efficiency.
Carlo Bianco - One of the best experts on this subject based on the ideXlab platform.
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synthesis of eco compatible bimetallic silver iron nanoparticles for water remediation and reactivity assessment on bromophenol blue
2019Co-Authors: Andrea Gallo, Carlo Bianco, Tiziana Anna Elisabetta Tosco, Alberto Tiraferri, Rajandrea SethiAbstract:Abstract In the last decade, zero-valent iron nanoparticles (nZVI) have been applied for groundwater remediation and they proved to be effective towards a wide range of contaminants, both organic and inorganic. One of the critical aspects related to the synthesis of this material concerns the use of borohydride, which increases the cost of the final product and generates toxic borates. In this paper, a new synthesis method of bimetallic nanoscale zero-valent silver/iron (nZVSI), its properties and its reactivity towards a model compound are presented. The novel synthesis protocol employs benign hydrosulfite as reducing agent and it is of easy implementation and scalability. The resulting nanoparticles have narrow size distribution and show appropriate colloidal stability. They consist of a core of zerovalent iron and a thin shell of iron oxide, while silver is homogeneously distributed within the material. The nanoparticles showed effective reactivity, able to degrade bromophenol blue with suitable kinetics and using a low amount of material. Additionally, the bimetallic nanomaterial significantly outperformed nanometric zero-valent silver (nZVS) and nZVI obtained with the same protocol. The proposed synthesis would allow to significantly reduce the environmental and health impact of the stage prior to product application via injection in the subsoil. Also, the simplicity and the safety of the proposed synthesis procedure would allow the production of the bimetallic reactant directly on-site, thus streamlining the remediation process and maximizing its efficiency.
