Comment on “Hierarchically porous, ultra-strong reduced graphene oxide-cellulose nanocrystal sponges for exceptional adsorption of water contaminants” by N. Yousefi, K. K. W. Wong, Z. Hosseinidoust, H. O. Sørensen, S. Bruns, Y. Zheng and N. Tufenkji, Nanoscale, 2018, 10, 7171

Nanoscale ◽  
2019 ◽  
Vol 11 (26) ◽  
pp. 12720-12722 ◽  
Author(s):  
Jie Ma ◽  
Yuecheng Xiong ◽  
Fei Yu
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Spot Test ◽  
Cellulose Nanocrystal ◽  
Water Contaminants ◽  
Hierarchically Porous ◽  
Multiple Factors ◽  
Reduced Graphene ◽  
Adsorption Of Water

The MB-spot test is susceptible to multiple factors leading to inaccurate SSA characterization.

scholarly journals Hierarchically porous, ultra-strong reduced graphene oxide-cellulose nanocrystal sponges for exceptional adsorption of water contaminants

Nanoscale ◽  
2018 ◽  
Vol 10 (15) ◽  
pp. 7171-7184 ◽  
Author(s):  
Nariman Yousefi ◽  
Kerwin K. W. Wong ◽  
Zeinab Hosseinidoust ◽  
Henning Osholm Sørensen ◽  
Stefan Bruns ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Self Assembly ◽  
Cellulose Nanocrystal ◽  
Water Contaminants ◽  
Hierarchically Porous ◽  
Treated Water ◽  
Reduced Graphene ◽  
Adsorption Of Water

Self-assembly of graphene oxide (GO) nanosheets into strong and hierarchically porous 3D sponges is a promising approach to exploit their capacity to adsorb contaminants while facilitating the recovery of the nanosheets from treated water.

Hierarchically Porous Hydroxyapatite Hybrid Scaffold Incorporated with Reduced Graphene Oxide for Rapid Bone Ingrowth and Repair

ACS Nano ◽  
2019 ◽  
Vol 13 (8) ◽  
pp. 9595-9606 ◽  
Author(s):  
Kai Zhou ◽  
Peng Yu ◽  
Xiaojun Shi ◽  
Tingxian Ling ◽  
Weinan Zeng ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Bone Ingrowth ◽  
Hybrid Scaffold ◽  
Porous Hydroxyapatite ◽  
Hierarchically Porous ◽  
Reduced Graphene

Hierarchically porous hydrogels and aerogels based on reduced graphene oxide, montmorillonite and hyper-crosslinked resins for water and air remediation

2021 ◽  
pp. 133162
Author(s):  
Rachele Castaldo ◽  
Roberto Avolio ◽  
Mariacristina Cocca ◽  
Maria Emanuela Errico ◽  
Marino Lavorgna ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Hierarchically Porous ◽  
Reduced Graphene

scholarly journals A New Sensor for Methyl Paraben Using an Electrode Made of a Cellulose Nanocrystal–Reduced Graphene Oxide Nanocomposite

Sensors ◽  
2019 ◽  
Vol 19 (12) ◽  
pp. 2726 ◽  
Author(s):  
Wan Elina Faradilla Wan Khalid ◽  
Mohamad Nasir Mat Arip ◽  
Latifah Jasmani ◽  
Yook Heng Lee
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Limit Of Detection ◽  
Electrochemical Sensing ◽  
Cellulose Nanocrystal ◽  
Good Reproducibility ◽  
Linear Calibration ◽  
Methyl Paraben ◽  
Reduced Graphene ◽  
Relative Standard

A new cellulose nanocrystal–reduced graphene oxide (CNC–rGO) nanocomposite was successfully used for mediatorless electrochemical sensing of methyl paraben (MP). Fourier-transform infrared spectroscopy (FTIR) and field-emission scanning electron microscopy (FESEM) studies confirmed the formation of the CNC–rGO nanocomposite. Cyclic voltammetry (CV) studies of the nanocomposite showed quasi-reversible redox behavior. Differential pulse voltammetry (DPV) was employed for the sensor optimization. Under optimized conditions, the sensor demonstrated a linear calibration curve in the range of 2 × 10−4–9 × 10−4 M with a limit of detection (LOD) of 1 × 10−4 M. The MP sensor showed good reproducibility with a relative standard deviation (RSD) of about 8.20%. The sensor also exhibited good stability and repeatability toward MP determinations. Analysis of MP in cream samples showed recovery percentages between 83% and 106%. Advantages of this sensor are the possibility for the determination of higher concentrations of MP when compared with most other reported sensors for MP. The CNC–rGO nanocomposite-based sensor also depicted good reproducibility and reusability compared to the rGO-based sensor. Furthermore, the CNC–rGO nanocomposite sensor showed good selectivity toward MP with little interference from easily oxidizable species such as ascorbic acid.

Adsorption and removal of triphenylmethane dyes from water by magnetic reduced graphene oxide

2014 ◽  
Vol 70 (10) ◽  
pp. 1663-1669 ◽  
Author(s):  
Jian-Zhong Sun ◽  
Zhi-Hong Liao ◽  
Rong-Wei Si ◽  
Gakai Peter Kingori ◽  
Fu-Xiang Chang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Adsorption Capacity ◽  
Reduced Graphene Oxide ◽  
Order Kinetic ◽  
Water Contaminants ◽  
Reduced Graphene ◽  
Organic Pollutants Removal ◽  
Adsorption Processes ◽  
Pollutants Removal ◽  
Magnetic Reduced Graphene Oxide

Triphenylmethane (TPM) dye is one of the most prevalent and recalcitrant water contaminants. Magnetic reduced graphene oxide (rGO) is an efficient adsorbent for organic pollutants removal. However, the performance and adsorption kinetics of magnetic rGO towards TPM have not yet been studied. In this study, a magnetic Fe3O4@rGO nano-composite, which could be easily removed from water with a simple magnetic separation step was synthesized and characterized. The magnetic rGO showed fast adsorption rate and high adsorption capacity towards different TPM dyes (the Langmuir monolayer adsorption capacity is 64.93 mg/g for adsorption of crystal violet). The adsorption processes are well-fitted to the pseudo-second-order kinetic model (R2 > 0.99) and the Langmuir isotherm model (R2 = 0.9996). Moreover, the magnetic rGO also showed excellent recycling and regeneration capabilities. The results indicated that adsorption with magnetic rGO would be a promising strategy to clean up the TPM contamination.

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