scholarly journals Facile Synthesis and Reuse of Magnetic Black Carbon Magnetite (BC-Mag) for Fast Carbamazepine Removal from Water

Nanomaterials ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 213
Author(s):  
Cai ◽  
Larese-Casanova
Keyword(s):  
Black Carbon ◽  
Sorption Kinetics ◽  
Significant Loss ◽  
Surface Functional Groups ◽  
Facile Synthesis ◽  
Step Method ◽  
Freundlich Model ◽  
Order Of Magnitude ◽  
One Step ◽  
Initial Uptake

Magnetic carbonaceous nanomaterials are needed in water treatment applications because they can offer both carbon surfaces for sorption of organic pollutants and ease of material magnetic retrieval for regeneration and reuse. In this study, we employed a facile one-step method to synthesize a black carbon-magnetite composite (BC-Mag) by high-temperature annealing of black carbon and hematite. The nanocomposite was easily dispersed and stable in water owing to the presence of negatively charged oxygen surface functional groups. Sorption kinetics with dissolved carbamazepine showed a rapid initial uptake with equilibrium achieved within only minutes. The sorption extent can be described with the Freundlich model, and surface area normalized sorption affinity was an order of magnitude greater than conventional granular activated carbon. The sorption extent of neutral carbamazepine remained constant between pH 2–10 while surface zeta potential decreased. BC-Mag can be reused for the sorption of carbamazepine up to six times without significant loss of the sorption extent.

Hierarchical flower-like Bi2WO6 hollow microspheres: facile synthesis and excellent catalytic performance

RSC Advances ◽  
2015 ◽  
Vol 5 (29) ◽  
pp. 23080-23085 ◽  
Author(s):  
Peigen Zhang ◽  
Jian Zhang ◽  
Anjian Xie ◽  
Shikuo Li ◽  
Jiming Song ◽  
...  
Keyword(s):  
Hollow Spheres ◽  
Catalytic Performance ◽  
Hollow Microspheres ◽  
Solvothermal Process ◽  
Facile Synthesis ◽  
Step Method ◽  
Bismuth Tungstate ◽  
One Step ◽  
Excellent Catalytic Performance

A one step method has been developed for the fabrication of hierarchical flower-like bismuth tungstate (Bi2WO6) hollow spheres via a solvothermal process.

scholarly journals Measuring Use Value from Recreation Participation: Reply

1994 ◽  
Vol 26 (1) ◽  
pp. 314-315
Author(s):  
John C. Whitehead
Keyword(s):  
Low Cost ◽  
Travel Cost ◽  
Travel Cost Method ◽  
Use Value ◽  
Cost Models ◽  
Step Method ◽  
Order Of Magnitude ◽  
One Step ◽  
Recreation Participation ◽  
The One

In Whitehead (1992), I proposed a one-step method of estimating recreational use values. I appreciate the opportunity to clarify several points made in the original paper and correct some mathematical errors. The criticisms raise three major issues that should be addressed: the theoretical construct of use value, diminishing marginal utility, and empirical specification. Before I address the criticisms I would like to emphasize that the one-step, recreation-participation method is not viewed as superior to the two-step, travel-cost method or any of its extensions. The method is a means of obtaining order of magnitude use-value estimates if the travel-cost method can not be implemented. To re-state one of the conclusions: “The one-step method is a useful, low-cost substitute for two-step travel cost models when research budgets are limited (Whitehead, 1992 p. 118).” This notion was underemphasized in the original paper.

Facile synthesis of Au–SnO2 hybrid nanospheres with enhanced photoelectrochemical biosensing performance

Nanoscale ◽  
2014 ◽  
Vol 6 (12) ◽  
pp. 6315-6321 ◽  
Author(s):  
Qingming Shen ◽  
Jingyi Jiang ◽  
Shilei Liu ◽  
Li Han ◽  
Xiaohui Fan ◽  
...  
Keyword(s):  
Facile Synthesis ◽  
Step Method ◽  
One Step

Au–SnO2 hybrid nanospheres with enhanced photoelectrochemical biosensing performance were synthesized via a facile, one-step method.

Facile synthesis of graphene nanoplate-supported porous Pt–Cu alloys with high electrocatalytic properties for methanol oxidation

2016 ◽  
Vol 4 (9) ◽  
pp. 3316-3323 ◽  
Author(s):  
Genlei Zhang ◽  
Zhenzhen Yang ◽  
Wen Zhang ◽  
Yuxin Wang
Keyword(s):  
Methanol Oxidation ◽  
Active Catalyst ◽  
Functionalized Graphene ◽  
Facile Synthesis ◽  
Step Method ◽  
Highly Active ◽  
Cu Alloys ◽  
One Step ◽  
High Boiling Point ◽  
Graphene Nanoplates

A porous Pt1Cu1 alloy nanocrystal catalyst supported on 1-aminopyrene functionalized graphene nanoplates, which is a highly active catalyst for methanol oxidation in alkaline medium, is synthesized by a one-step method without any high boiling point organic solvents, surfactants, stabilizers and templates.

Effect of Dynamic Crosslinking on Mechanical Properties of PP/EPDM Blends

1993 ◽  
Vol 58 (11) ◽  
pp. 2642-2650 ◽  
Author(s):  
Zdeněk Kruliš ◽  
Ivan Fortelný ◽  
Josef Kovář
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
Shear Modulus ◽  
High Impact ◽  
Necessary Condition ◽  
Step Method ◽  
Melt Mixing ◽  
One Step ◽  
High Impact Strength ◽  
Dynamic Curing

The effect of dynamic curing of PP/EPDM blends with sulfur and thiuram disulfide systems on their mechanical properties was studied. The results were interpreted using the knowledge of the formation of phase structure in the blends during their melt mixing. It was shown, that a sufficiently slow curing reaction is necessary if a high impact strength is to be obtained. Only in such case, a fine and homogeneous dispersion of elastomer can be formed, which is the necessary condition for high impact strength of the blend. Using an inhibitor of curing in the system and a one-step method of dynamic curing leads to an increase in impact strength of blends. From the comparison of shear modulus and impact strength values, it follows that, at the stiffness, the dynamically cured blends have higher impact strength than the uncured ones.

Bismuth particles imbedded degradable nanohydrogel prepared by one-step method for tumor dual-mode imaging and chemo-photothermal combined therapy

2019 ◽  
Vol 375 ◽  
pp. 122000 ◽  
Author(s):  
Yang Xuan ◽  
Xian-Lin Song ◽  
Xiao-Quan Yang ◽  
Ruo-Yun Zhang ◽  
Zi-Yu Song ◽  
...  
Keyword(s):  
Combined Therapy ◽  
Dual Mode ◽  
Step Method ◽  
One Step

scholarly journals Bio-Based Polyurethane Networks Derived from Liquefied Sawdust

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3138
Author(s):  
Kamila Gosz ◽  
Agnieszka Tercjak ◽  
Adam Olszewski ◽  
Józef Haponiuk ◽  
Łukasz Piszczyk
Keyword(s):  
Biomass Conversion ◽  
Structural Features ◽  
Mechanical Analysis ◽  
Process Efficiency ◽  
Hydroxyl Number ◽  
Step Method ◽  
One Step ◽  
Liquefaction Process ◽  
The Fourier Transform ◽  
Liquefaction Temperature

The utilization of forestry waste resources in the production of polyurethane resins is a promising green alternative to the use of unsustainable resources. Liquefaction of wood-based biomass gives polyols with properties depending on the reagents used. In this article, the liquefaction of forestry wastes, including sawdust, in solvents such as glycerol and polyethylene glycol was investigated. The liquefaction process was carried out at temperatures of 120, 150, and 170 °C. The resulting bio-polyols were analyzed for process efficiency, hydroxyl number, water content, viscosity, and structural features using the Fourier transform infrared spectroscopy (FTIR). The optimum liquefaction temperature was 150 °C and the time of 6 h. Comprehensive analysis of polyol properties shows high biomass conversion and hydroxyl number in the range of 238–815 mg KOH/g. This may indicate that bio-polyols may be used as a potential substitute for petrochemical polyols. During polyurethane synthesis, materials with more than 80 wt% of bio-polyol were obtained. The materials were obtained by a one-step method by hot-pressing for 15 min at 100 °C and a pressure of 5 MPa with an NCO:OH ratio of 1:1 and 1.2:1. Dynamical-mechanical analysis (DMA) showed a high modulus of elasticity in the range of 62–839 MPa which depends on the reaction conditions.

Facile synthesis, characterize, mechanism and enhanced visible-light photocatalytic of SiW12/α-Fe2O3 nanocomposite

2021 ◽  
Author(s):  
Haihui Yu ◽  
Bing Wei ◽  
Junping Wang ◽  
Sai Zeng ◽  
Haiqi Zhao ◽  
...  
Keyword(s):  
Visible Light ◽  
Facile Synthesis ◽  
Step Method ◽  
Visible Light Photocatalytic

A novel type of photocatalyst SiW12/α-Fe2O3 created by combining SiW12 NPs and α-Fe2O3 nanorings was synthesized through “step to step” method. The structure, composition, morphology and the interaction between SiW12...

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