ICE SEGREGATION INDUCED SELF-ASSEMBLY OF GRAPHENE OXIDE INTO GRAPHENE-BASED AEROGEL FOR ENHANCED ADSORPTION OF HEAVY METAL IONS AND PHENOLIC COMPOUNDS IN AQUEOUS MEDIA

2021 ◽  
pp. 101309
Author(s):  
Le Minh Huong ◽  
Doan Ba Thinh ◽  
Tran Hoang Tu ◽  
Nguyen Minh Dat ◽  
Tran Thi Hong ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Graphene Oxide ◽  
Phenolic Compounds ◽  
Metal Ions ◽  
Self Assembly ◽  
Heavy Metal Ions ◽  
Aqueous Media ◽  
Enhanced Adsorption ◽  
Ice Segregation

scholarly journals Nickel tungstate–graphene nanocomposite for simultaneous electrochemical detection of heavy metal ions with application to complex aqueous media

RSC Advances ◽  
2017 ◽  
Vol 7 (67) ◽  
pp. 42146-42158 ◽  
Author(s):  
Rudra Kumar ◽  
Thiruvelu Bhuvana ◽  
Ashutosh Sharma
Keyword(s):  
Heavy Metal ◽  
Graphene Oxide ◽  
Transition Metal ◽  
Metal Ions ◽  
Electrochemical Detection ◽  
Heavy Metal Ions ◽  
Aqueous Media ◽  
Reduced Graphene ◽  
Graphene Nanocomposite ◽  
First Time

We show for the first time, a composite of carbon and binary transition metal oxide, in the form of reduced graphene oxide and nickel tungstate (RGO/NiWO4) nanocomposite, is an effective material for electrochemical detection of heavy metal ions.

Graphene oxide modified thiosemicarbazide nanocomposite as an effective eliminator for heavy metal ions

2020 ◽  
pp. 114790
Author(s):  
Haya A. Abubshait ◽  
Ahmed A. Farag ◽  
Mohamed A. El-Raouf ◽  
Nabel A. Negm ◽  
Eslam A. Mohamed
Keyword(s):  
Heavy Metal ◽  
Graphene Oxide ◽  
Metal Ions ◽  
Heavy Metal Ions

Facile Synthesis of Graphene-Based Aerogels and Their Applications for Adsorption of Heavy Metal Ions

2019 ◽  
Vol 18 (02) ◽  
pp. 1850019
Author(s):  
Huiyuan Yu ◽  
Jiayi Zhu ◽  
Hongbo Ren ◽  
Shuxin Liu
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Self Assembly ◽  
Heavy Metal Ions ◽  
Three Dimensional ◽  
Annealing Process ◽  
Interconnected Network ◽  
Facile Synthesis ◽  
Thermal Annealing Process ◽  
Highly Porous

Graphene-based aerogels with a three-dimensional interconnected network were fabricated via the hydrothermal self-assembly and thermal-annealing process. The aerogels were characterized by means of scanning electron microscopy and atomic absorption spectroscopy. The graphene-based aerogels showed highly porous structure and adsorption capacity for heavy metal ions. Thus, they would be the promising materials for removal of heavy metal ions from water.

Graphene oxide-based electrochemical sensor: a platform for ultrasensitive detection of heavy metal ions

RSC Advances ◽  
2014 ◽  
Vol 4 (47) ◽  
pp. 24653-24657 ◽  
Author(s):  
Xuezhong Gong ◽  
Yunlong Bi ◽  
Yihua Zhao ◽  
Guozhen Liu ◽  
Wey Yang Teoh
Keyword(s):  
Heavy Metal ◽  
Graphene Oxide ◽  
Metal Ions ◽  
Electrochemical Sensor ◽  
Electrochemical Detection ◽  
Heavy Metal Ions ◽  
Gold Surface ◽  
Ultrasensitive Detection ◽  
Control Electrode ◽  
Graphene Oxide Sheets

Facile functionalization of graphene oxide sheets on gold surface results in complexation-enhanced electrochemical detection of heavy metal ions, shown here for Pb2+, Cu2+ and Hg2+, with improved detection limits by two orders of magnitude relative to the control electrode.

scholarly journals Advanced Modified Polyacrylonitrile Membrane with Enhanced Adsorption Property for Heavy Metal Ions

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Xinfeng Zhang ◽  
Shujing Yang ◽  
Bing Yu ◽  
Qinglong Tan ◽  
Xiaoyan Zhang ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Adsorption Property ◽  
Enhanced Adsorption ◽  
Polyacrylonitrile Membrane

scholarly journals A systematic study for removal of heavy metals from aqueous media using Sorghum bicolor: an efficient biosorbent

2018 ◽  
Vol 77 (10) ◽  
pp. 2355-2368 ◽  
Author(s):  
Khalida Naseem ◽  
Zahoor H. Farooqi ◽  
Muhammad Z. Ur Rehman ◽  
Muhammad A. Ur Rehman ◽  
Robina Begum ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Aqueous Media ◽  
Review Article ◽  
Isotherm Models ◽  
Adsorption Efficiency ◽  
Adsorption Isotherm Models ◽  
Removal Of Heavy Metals

Abstract This review is based on the adsorption characteristics of sorghum (Sorghum bicolor) for removal of heavy metals from aqueous media. Different parameters like pH, temperature of the medium, sorghum concentration, sorghum particle size, contact time, stirring speed and heavy metal concentration control the adsorption efficiency of sorghum biomass for heavy metal ions. Sorghum biomass showed maximum efficiency for removal of heavy metal ions in the pH range of 5 to 6. It is an agricultural waste and is regarded as the cheapest biosorbent, having high adsorption capacity for heavy metals as compared to other reported adsorbents, for the treatment of heavy metal polluted wastewater. Adsorption of heavy metal ions onto sorghum biomass follows pseudo second order kinetics. Best fitted adsorption isotherm models for removal of heavy metal ions on sorghum biomass are Langmuir and Freundlich adsorption isotherm models. Thermodynamic aspects of heavy metal ions adsorption onto sorghum biomass have also been elaborated in this review article. How adsorption efficiency of sorghum biomass can be improved by different physical and chemical treatments in future has also been elaborated. This review article will be highly useful for researchers working in the field of water treatment via biosorption processing. The quantitative demonstrated efficiency of sorghum biomass for various heavy metal ions has also been highlighted in different sections of this review article.

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