Effect of physicochemical factors on transport and retention of graphene oxide in saturated media

Chen, Chong; Shang, Jianying; Zheng, Xiaoli; Zhao, Kang; Yan, Chaorui; Sharma, Prabhakar; Liu, Kesi

doi:10.1016/j.envpol.2018.01.026

Cited by 51 publications

(9 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Quartz sand (Sinopharm, Beijing, China) in 425−600 μm size fraction was chosen as the model porous medium. To remove impurities from the sand surface, the sand was soaked in 2 M HCl solution and then heated in 90 °C for 24 h. 57 The sand was washed with ultrapure water more than 10 times and then oven-dried at 105 °C. Two nylon membranes (80-mesh, Jie Rong, China) were placed at both ends of the column to support the sand and disperse the flow.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

Chemical Aging Changed Aggregation Kinetics and Transport of Biochar Colloids

Wang

Zhang

Shang

et al. 2019

Environ. Sci. Technol.

Self Cite

103

View full text Add to dashboard Cite

Little is known about aggregation and transport behaviors of aged biochar colloids in the terrestrial environment. This study investigated aggregation kinetics and transport of biochar colloids from aged (HNO3 treatment) and pristine pinewood biochars pyrolyzed at 300 and 600 °C (PB300 and PB600) in NaCl and CaCl2 solutions. In NaCl solutions, critical coagulation concentrations (CCCs) of aged PB300 and PB600 colloids (540 mM and 327 mM) were much greater than the CCCs of pristine biochar colloids (300 mM and 182 mM). This is likely due to substantial increase of negatively charged oxygen-containing functional groups (primarily carboxyl) on aged biochar surfaces. Intriguingly, in CaCl2 solutions the CCCs of the aged PB300 and PB600 colloids decreased to 25.2 mM and 32.1 mM from 58.6 mM and 41.7 mM for the pristine colloids, respectively. This probably resulted from greater surface charge neutralization and Ca2+ bridging for the aged biochar colloids. In salt solutions (e.g., 10 and 50 mM NaCl and 1 and 10 mM CaCl2), the aged biochar colloids showed higher mobility in porous media than the pristine biochar colloids. This study demonstrated that pristine and aged biochar colloids were stable in the solutions with environmentally relevant ionic strength, and the aging process might substantially increase their mobility in the subsurface.

show abstract

Section: ■ Materials and Methodsmentioning

confidence: 99%

Chemical Aging Changed Aggregation Kinetics and Transport of Biochar Colloids

Wang

Zhang

Shang

et al. 2019

Environ. Sci. Technol.

Self Cite

103

View full text Add to dashboard Cite

show abstract

“…, solution chemistry, natural organic matter, initial concentration, organic acids, surfactants, grain size, flow rate, and saturated media, as well as the presence of bacteria, contaminants, and natural colloids) can impact the mobility properties of GO nanoparticles in porous media. 3,9,11–33 The findings from these studies demonstrated that GO exhibits satisfactory mobility over a wide range of environmental conditions. Furthermore, secondary minerals such as carbonate minerals and oxides of iron and aluminum are frequently present as coatings on the surfaces of the primary minerals (silicates and aluminosilicates) in soil and aquifer sediments.…”

Section: Introductionmentioning

confidence: 83%

Biosurfactant-mediated mobility of graphene oxide nanoparticles in saturated porous media

Chen

Zhang

Zhu

et al. 2022

Environ. Sci.: Processes Impacts

View full text Add to dashboard Cite

show abstract

“…In order to test mineralization ability of the samples, the cylindrical samples (Φ 6 mm×3 mm) were immersed in SBF centrifuge tubes. The surface area to solution ratio of the sample is 10 ml cm −2 at 37 °C [27]. After soaking for 7 d, the sample was taken out and dried in air for 2 d for further phase composition and structure characterization.…”

Section: In Vitro Mineralization Ability 241 In Vitro Immersing Testmentioning

confidence: 99%

“…According to previous reports [27], cell experiments are mainly divided into two aspects: cell proliferation and cell viability. As said by the instructions, MC3T3-E1 cells (Shanghai Institute of Biochemistry, China) were located in an incubator containing 5% CO 2 at 37 °C.…”

Section: Cell Compatibility Testmentioning

confidence: 99%

Properties of vaterite-containing tricalcium silicate composited graphene oxide for biomaterials

et al. 2019

View full text Add to dashboard Cite

The properties of vaterite-containing tricalcium silicate (referred as V-C3S) bone cement can be significantly affected by the addition of graphene oxide (GO). The composited bone cement can overcome the problems of calcium silicate-based bone cement, such as poor mechanical properties and low cellular activity. The material properties, mineralization and cell compatibility were characterized. The results demonstrated that GO/V-C3S had good curing ability, mechanical properties and high injectability. In general, V-C3S adding with 0.04 wt% GO is better due to its advanced compressive strength (17.14% higher than pure V-C3S) and lower pH value. In vitro immersion experiments could show its admirable mineralization ability. Cell experiments confirmed its low cytotoxicity and favorable ability of cell proliferation. In addition, enhanced antibacterial property (2–3 times higher compared with pure V-C3S) was also verified by antibacterial experiments. These results suggest that GO/V-C3S bone cement is a promising material for biomedical applications.

show abstract

Effect of physicochemical factors on transport and retention of graphene oxide in saturated media

Cited by 51 publications

References 41 publications

Chemical Aging Changed Aggregation Kinetics and Transport of Biochar Colloids

Chemical Aging Changed Aggregation Kinetics and Transport of Biochar Colloids

Biosurfactant-mediated mobility of graphene oxide nanoparticles in saturated porous media

Properties of vaterite-containing tricalcium silicate composited graphene oxide for biomaterials

Contact Info

Product

Resources

About