Degradation of carbon tetrachloride using ultrasound‐assisted nanoscaled zero‐valent iron particles@sulfur/nitrogen dual‐doped reduced graphene oxide composite: Kinetics, activation energy, effects of reaction conditions and degradation mechanism

2019 ◽  
Vol 33 (8) ◽  
Author(s):  
Fansheng Meng ◽  
Yiyang Ma ◽  
Yeyao Wang
Keyword(s):  
Activation Energy ◽  
Graphene Oxide ◽  
Carbon Tetrachloride ◽  
Reduced Graphene Oxide ◽  
Degradation Mechanism ◽  
Zero Valent Iron ◽  
Iron Particles ◽  
Reaction Conditions ◽  
Reduced Graphene ◽  
Ultrasound Assisted

scholarly journals Hydrodechlorination of carbon tetrachloride with nanoscale nickeled zero-valent iron @ reduced graphene oxide: kinetics, pathway, and mechanisms

2020 ◽  
Vol 82 (4) ◽  
pp. 759-772
Author(s):  
Xiao Chen ◽  
Zhen Wang ◽  
Qi Yang ◽  
Yeyao Wang ◽  
Zhaoxiang Liu ◽  
...  
Keyword(s):  
Activation Energy ◽  
Graphene Oxide ◽  
Carbon Tetrachloride ◽  
Reduced Graphene Oxide ◽  
Bimetallic Nanoparticles ◽  
Dimensional Structure ◽  
Nickel Metal ◽  
Reduced Graphene ◽  
Supporting Material ◽  
Reaction Activation Energy

Abstract In recent years, carbon tetrachloride (CT) has been frequently detected in surface water and groundwater around the world; it is necessary to find an effective way to treat wastewater contaminated with it. In this study, Ni/Fe bimetallic nanoparticles were immobilized on reduced graphene oxide (NF@rGO), and used to dechlorinate CT in aqueous solution. Scanning electron microscopy (SEM) demonstrated that the two-dimensional structure of rGO could disperse nanoparticles commendably. The results of batch experiments showed that the 4N4F@rGO (Fe/GO = 4 wt./wt., and Ni/Fe = 4 wt.%) could reach a higher reduction capacity (143.2 mgCT/gcatalyst) compared with Ni/Fe bimetallic nanoparticles (91.7 mgCT/gcatalyst) and Fe0 nanoparticles (49.8 mgCT/gcatalyst) respectively. That benefited from the nickel metal as a co-catalyst, which could reduce the reaction activation energy of 6.59 kJ/mol, and rGO as an electrical conductivity supporting material could further reduce the reaction activation energy of 4.73 kJ/mol as presented in the conceptual model. More complete dechlorination products were generated with the use of 4N4F@rGO. Based on the above results, the reductive pathway of CT and the catalytic reaction mechanism have been discussed.

Adsorption and advanced oxidation of diverse pharmaceuticals and personal care products (PPCPs) from water using highly efficient rGO–nZVI nanohybrids

2020 ◽  
Vol 6 (8) ◽  
pp. 2223-2238 ◽  
Author(s):  
Arvid Masud ◽  
Nita G. Chavez Soria ◽  
Diana S. Aga ◽  
Nirupam Aich
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Personal Care Products ◽  
Advanced Oxidation ◽  
Zero Valent Iron ◽  
Redox Activity ◽  
Personal Care ◽  
Adsorption Sites ◽  
Reduced Graphene ◽  
Nanoscale Zero Valent Iron

Reduced graphene oxide-nanoscale zero valent iron (rGO–nZVI) nanohybrid, with tunable adsorption sites of rGO and unique catalytic redox activity of nZVI, perform enhanced removal of diverse PPCPs from water.

Ultrasound assisted synthesis of reduced graphene oxide (rGO) supported InVO4-TiO2 nanocomposite for efficient hydrogen production

2019 ◽  
Vol 53 ◽  
pp. 1-10 ◽  
Author(s):  
Hafeez Yusuf Hafeez ◽  
Sandeep Kumar Lakhera ◽  
Muthupandian Ashokkumar ◽  
Bernaurdshaw Neppolian
Keyword(s):  
Graphene Oxide ◽  
Hydrogen Production ◽  
Reduced Graphene Oxide ◽  
Reduced Graphene ◽  
Ultrasound Assisted

Preliminary Study on Effects of Nanoscale Amendments on Hyperaccumulator Indian Marigold Grown on Co-Contaminated Soils

2014 ◽  
Vol 955-959 ◽  
pp. 243-247 ◽  
Author(s):  
Jun Jie Du ◽  
Qi Xing Zhou
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Contaminated Soils ◽  
Zero Valent Iron ◽  
Reduced Graphene ◽  
Nanoscale Zero Valent Iron ◽  
Pot Trials ◽  
Preliminary Study

In this study, nanoscale zero-valent iron (nZVI) and nZVI/reduced graphene oxide (RGO-nZVI) nanocomposites were prepared, and the effect of nZVI, RGO-nZVI and graphene oxide (GO) on Indian marigold were examined by pot trials with contaminated soils amended with nanomaterials. The observed results show that 0.05% nZVI and 0.05% RGO-nZVI can wilt the Indian marigold, and they exhibit significant in situ mobility in fluvo-aquic soils. In this paper, the feasibility of improving the phytoremediation efficiency of contaminated soils by amending with nanomaterials is also discussed.

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