Comments on “Interaction of graphene oxide with lysozyme: Insights from conformational structure and surface charge investigations” by Binbin Li, Changchun Hao, Hengyu Liu, Haiyan Yang, Kunfeng Zhong, Mingduo Zhang, Runguang Sun published in Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 264 (2022) 120207

2021 ◽  
pp. 120700
Author(s):  
Marek Wiśniewski
Keyword(s):  
Graphene Oxide ◽  
Surface Charge ◽  
Conformational Structure

Effect of Surface Charge Density of Graphene Oxide on Chemical Warfare Agent Simulants Blocking

2021 ◽  
pp. 152225
Author(s):  
Youna Kim ◽  
Moonhyun Choi ◽  
Jiwoong Heo ◽  
Sungwon Jung ◽  
Dongwon Ka ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Charge Density ◽  
Surface Charge ◽  
Surface Charge Density ◽  
Chemical Warfare Agent ◽  
Chemical Warfare ◽  
Effect Of Surface

Investigation on the conformational structure of hemoglobin on graphene oxide

2016 ◽  
Vol 182 ◽  
pp. 272-279 ◽  
Author(s):  
Yanqing Wang ◽  
Zhaohua Zhu ◽  
Hongmei Zhang ◽  
Jian Chen ◽  
Boping Tang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Conformational Structure

The evolution of surface charge on graphene oxide during the reduction and its application in electroanalysis

Carbon ◽  
2014 ◽  
Vol 66 ◽  
pp. 302-311 ◽  
Author(s):  
Ming-jie Li ◽  
Chen-ming Liu ◽  
Yong-bing Xie ◽  
Hong-bin Cao ◽  
He Zhao ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Surface Charge

scholarly journals Enhanced Fouling Resistance and Antibacterial Properties of Novel Graphene Oxide-Arabic Gum Polyethersulfone Membranes

2019 ◽  
Vol 9 (3) ◽  
pp. 513 ◽  
Author(s):  
Ahmad Najjar ◽  
Souhir Sabri ◽  
Rashad Al-Gaashani ◽  
Viktor Kochkodan ◽  
Muataz Atieh
Keyword(s):  
Electron Microscopy ◽  
Graphene Oxide ◽  
Surface Charge ◽  
Pore Size ◽  
Bacterial Species ◽  
Inversion Method ◽  
Gram Positive ◽  
Arabic Gum ◽  
Gram Negative ◽  
Morphological Studies

Membrane biofouling has proved to be a major obstacle when it comes to membrane efficiency in membrane-based water treatment. Solutions to this problem remain elusive. This study presents novel polyethersulfone (PES) membranes that are fabricated using the phase inversion method at different loadings of graphene oxide (GO) and 1 wt. % arabic gum (AG) as nanofiller and pore forming agents. Synthesized GO was examined using scanning electron microscopy (SEM) and transmission electron microscopy (TEM) for morphological studies and energy-dispersive X-ray spectroscopy (EDX) for elemental analysis. The prepared GO flakes showed a high content of oxygen-containing groups (~31%). The fabricated membranes were extensively characterized, including water contact angle analysis for hydrophilicity, zeta potential measurements for surface charge, SEM, total porosity and pore size measurements. The prepared membranes underwent fouling tests using bovine serum albumin (BSA) solutions and biofouling tests using model Gram-positive (Bacillus subtilis) and Gram-negative (Escherichia coli) bacterial suspensions as well as real treated sewage effluent (TSE). The results showed that the novel PES/GO membranes possessed strong hydrophilicity and negative surface charge with an increase in porosity, pore size and water flux. The PES/GO membranes exhibited superior antibacterial action against both Gram-positive and Gram-negative bacterial species, implicating PES membranes which incorporate GO and AG as novel membranes that are capable of high antibiofouling properties with high flux.

Synergetic Effect of Physicochemical and Electrostatic Strategies on Ion Sieving for Polymer Cross-linked Graphene Oxide Membrane

2021 ◽  
Author(s):  
Ki Ryuk Bang ◽  
Daniel Bahamon ◽  
Lourdes F. Vega ◽  
Eun Seon Cho
Keyword(s):  
Graphene Oxide ◽  
Surface Charge ◽  
Water Permeability ◽  
Ion Selectivity ◽  
Synergetic Effect ◽  
Water Molecules ◽  
Oxide Membrane

Layered-stacked graphene oxide (GO) membranes have shown ultrafast water permeability and ion selectivity by virtue of well-defined nanochannels and intrinsic surface charge properties; however, accumulating water molecules in GO capillaries...

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