scholarly journals Enhanced adsorption capacity of ultralong hydrogen titanate nanobelts for antibiotics

2017 ◽  
Vol 5 (9) ◽  
pp. 4352-4358 ◽  
Author(s):  
Wenyao Li ◽  
Jingru Wang ◽  
Guanjie He ◽  
Li Yu ◽  
Nuruzzaman Noor ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Hollow Structure ◽  
Contaminated Water ◽  
Hydrogen Titanate ◽  
Enhanced Adsorption

Ultralong hydrogen titanate nanobelts with a hollow structure and high surface area were synthesized to serve as promising materials for effective adsorption of antibiotics from contaminated water.

scholarly journals Effective Poly (Cyclotriphosphazene-Co-4,4′-Sulfonyldiphenol)@rGO Sheets for Tetracycline Adsorption: Fabrication, Characterization, Adsorption Kinetics and Thermodynamics

Nanomaterials ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1540
Author(s):  
Muhammad Ahmad ◽  
Tehseen Nawaz ◽  
Mohammad Mujahid Alam ◽  
Yasir Abbas ◽  
Shafqat Ali ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
High Adsorption ◽  
Clean Environment ◽  
Equilibrium Data ◽  
Langmuir Isotherm Model ◽  
High Adsorption Capacity ◽  
Adsorption Equilibrium Data

The development of excellent drug adsorbents and clarifying the interaction mechanisms between adsorbents and adsorbates are greatly desired for a clean environment. Herein, we report that a reduced graphene oxide modified sheeted polyphosphazene (rGO/poly (cyclotriphosphazene-co-4,4′-sulfonyldiphenol)) defined as PZS on rGO was used to remove the tetracycline (TC) drug from an aqueous solution. Compared to PZS microspheres, the adsorption capacity of sheeted PZS@rGO exhibited a high adsorption capacity of 496 mg/g. The adsorption equilibrium data well obeyed the Langmuir isotherm model, and the kinetics isotherm was fitted to the pseudo-second-order model. Thermodynamic analysis showed that the adsorption of TC was an exothermic, spontaneous process. Furthermore, we highlighted the importance of the surface modification of PZS by the introduction of rGO, which tremendously increased the surface area necessary for high adsorption. Along with high surface area, electrostatic attractions, H-bonding, π-π stacking and Lewis acid-base interactions were involved in the high adsorption capacity of PZS@rGO. Furthermore, we also proposed the mechanism of TC adsorption via PZS@rGO.

Morphology dependent adsorption of methylene blue on trititanate nanoplates and nanotubes prepared by the hydrothermal treatment of TiO2

2016 ◽  
Vol 75 (2) ◽  
pp. 350-357
Author(s):  
Graham Dawson ◽  
Wei Chen ◽  
Luhua Lu ◽  
Kai Dai
Keyword(s):  
Methylene Blue ◽  
Adsorption Capacity ◽  
Surface Area ◽  
Pore Volume ◽  
Hydrothermal Reaction ◽  
Low Cost ◽  
High Surface ◽  
High Surface Area ◽  
High Capacity ◽  
Adsorption Properties

The adsorption properties of two nanomorphologies of trititanate, nanotubes (TiNT) and plates (TiNP), prepared by the hydrothermal reaction of concentrated NaOH with different phases of TiO2, were examined. It was found that the capacity for both morphologies towards methylene blue (MB), an ideal pollutant, was extremely high, with the TiNP having a capacity of 130 mg/g, higher than the TiNT, whose capacity was 120 mg/g at 10 mg/L MB concentration. At capacity, the well-dispersed powders deposit on the floor of the reaction vessel. The two morphologies had very different structural and adsorption properties. TiNT with high surface area and pore volume exhibited exothermic monolayer adsorption of MB. TiNP with low surface area and pore volume yielded a higher adsorption capacity through endothermic multilayer adsorption governed by pore diffusion. TiNP exhibited a higher negative surface charge of −23 mV, compared to −12 mV for TiNT. The adsorption process appears to be an electrostatic interaction, with the cationic dye attracted more strongly to the nanoplates, resulting in a higher adsorption capacity and different adsorption modes. We believe this simple, low cost production of high capacity nanostructured adsorbent material has potential uses in wastewater treatment.

scholarly journals Effect of Sodium Periodate on the Adsorption Capacity of Silica-Lignin from Rice Husk on Chromium(VI)

2019 ◽  
Vol 22 (6) ◽  
pp. 242-249 ◽  
Author(s):  
Yati B. Yuliyati ◽  
Solihudin Solihudin ◽  
Atiek Rostika Noviyanti
Keyword(s):  
Adsorption Capacity ◽  
Surface Area ◽  
Sodium Periodate ◽  
High Surface ◽  
Sol Gel ◽  
High Surface Area ◽  
Adsorption Model ◽  
Chromium Vi ◽  
Reactive Groups ◽  
Isotherm Adsorption

Reactive groups such as silanol, hydroxyl, and carbonyl groups in silica-lignin composites play a role in binding to chromium(VI) ions. The activation of functional groups in silica-lignin can be increased by the addition of an activator such as sodium periodate, which can also oxidize the lignin monomer (guaiasil) to ortho-quinone. This study aimed to obtain silica-lignin composites from rice husks activated by sodium periodate with a high surface area. Composite absorption was tested on chromium(VI) adsorption. Silica-lignin isolation was carried out by using the sol-gel method at concentrations of sodium hydroxide 5, 10, 15, and 20% (b/b). Silica-lignin activated with sodium periodate 10% (b/b) had the smallest particle size of about 8μm, with a surface area of 14.0888 m2.g-1 and followed Halsey isotherm adsorption model, with an adsorption capacity of 0.3054 mg.g-1.

Facile synthesis of hollow hierarchical Ni/γ-Al2O3 nanocomposites for methane dry reforming catalysis

RSC Advances ◽  
2014 ◽  
Vol 4 (93) ◽  
pp. 51184-51193 ◽  
Author(s):  
Qing Zhang ◽  
Tao Wu ◽  
Peng Zhang ◽  
Ruijuan Qi ◽  
Rong Huang ◽  
...  
Keyword(s):  
Surface Area ◽  
Strong Interaction ◽  
High Surface ◽  
High Surface Area ◽  
Hollow Structure ◽  
Catalytic Performance ◽  
Dry Reforming ◽  
Facile Synthesis ◽  
Methane Dry Reforming ◽  
Accessible Surface

Hierarchical Ni/Al2O3 nanocomposite possesses a high surface area, high loading of well dispersed metal nanoparticles, and a hierarchical hollow structure. The strong interaction between metal and support and the large open accessible surface lead to excellent sintering and carbon resistance, and superior catalytic performance in methane dry reforming.

scholarly journals Carbon Nanomaterials for the Treatment of Heavy Metal-Contaminated Water and Environmental Remediation

2019 ◽  
Vol 14 (1) ◽  
Author(s):  
Rabia Baby ◽  
Bullo Saifullah ◽  
Mohd Zobir Hussein
Keyword(s):  
Heavy Metal ◽  
Surface Area ◽  
Environmental Remediation ◽  
Carbon Nanomaterials ◽  
Heavy Metal Contamination ◽  
High Surface ◽  
High Surface Area ◽  
Contaminated Water ◽  
Removal Of Heavy Metals ◽  
Carbon Based Nanomaterials

Abstract Nanotechnology is an advanced field of science having the ability to solve the variety of environmental challenges by controlling the size and shape of the materials at a nanoscale. Carbon nanomaterials are unique because of their nontoxic nature, high surface area, easier biodegradation, and particularly useful environmental remediation. Heavy metal contamination in water is a major problem and poses a great risk to human health. Carbon nanomaterials are getting more and more attention due to their superior physicochemical properties that can be exploited for advanced treatment of heavy metal-contaminated water. Carbon nanomaterials namely carbon nanotubes, fullerenes, graphene, graphene oxide, and activated carbon have great potential for removal of heavy metals from water because of their large surface area, nanoscale size, and availability of different functionalities and they are easier to be chemically modified and recycled. In this article, we have reviewed the recent advancements in the applications of these carbon nanomaterials in the treatment of heavy metal-contaminated water and have also highlighted their application in environmental remediation. Toxicological aspects of carbon-based nanomaterials have also been discussed.

scholarly journals Hyper-Crosslinked Polymer Nanocomposites Containing Mesoporous Silica Nanoparticles with Enhanced Adsorption Towards Polar Dyes

Polymers ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1388
Author(s):  
Marco Guerritore ◽  
Rachele Castaldo ◽  
Brigida Silvestri ◽  
Roberto Avolio ◽  
Mariacristina Cocca ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Silica Nanoparticles ◽  
Surface Area ◽  
Organic Dyes ◽  
Mesoporous Silica Nanoparticles ◽  
High Surface ◽  
High Surface Area ◽  
Reactive Dye ◽  
New Strategy ◽  
Enhanced Adsorption

The development of new styrene-based hyper-crosslinked nanocomposites (HCLN) containing mesoporous silica nanoparticles (MSN) is reported here as a new strategy to obtain functional high surface area materials with an enhanced hydrophilic character. The HCLN composition, morphology and porous structure were analyzed using a multi-technique approach. The HCLN displayed a high surface area (above 1600 m2/g) and higher microporosity than the corresponding hyper-crosslinked neat resin. The enhanced adsorption properties of the HCLN towards polar organic dyes was demonstrated through the adsorption of a reactive dye, Remazol Brilliant Blue R (RB). In particular, the HCLN containing 5phr MSN showed the highest adsorption capacity of RB.

Template-Method Synthesis of High-Surface-Area Monolithic Carbon Aerogels and Their Applications for Hydrogen and Deuterium Adsorption

2017 ◽  
Vol 16 (05n06) ◽  
pp. 1750010 ◽  
Author(s):  
Bowei Chen ◽  
Xiaojun Wang ◽  
Jiayi Zhu ◽  
Yutie Bi ◽  
Xuan Luo ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Surface Area ◽  
Hydrogen Adsorption ◽  
High Surface ◽  
High Surface Area ◽  
Carbon Aerogel ◽  
Molar Ratio ◽  
Template Method ◽  
Carbon Aerogels ◽  
Polymer Templates

In this work, novel monolithic carbon aerogels obtained by using a polymer template method were characterized and evaluated for their applications in the hydrogen and deuterium adsorption capacity. The properties (i.e., surface area, pore size distribution, hydrogen and deuterium adsorption capacities, etc.) of the carbon aerogels were affected by the polymer templates. The results showed that the carbon aerogel with the molar ratio of polyacrylic acid (PAA) to zinc chloride (ZnCl2) being 0.75:40 was featured the highest surface area (1806 m2/g) and had the highest hydrogen adsorption capacity. Moreover, the deuterium adsorption capacity of the carbon aerogel was to be further elucidated.

Adsorption of Creatinine on Pine Nut Shell-Based High Surface Area Activated Carbon

2014 ◽  
Vol 1073-1076 ◽  
pp. 81-85
Author(s):  
Chun Yu Xi ◽  
Xue Bin Chu ◽  
Mu Yao Xi ◽  
Li Kun Zhao ◽  
Yun Ze Sun ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Aqueous Medium ◽  
Adsorption Capacity ◽  
Surface Area ◽  
Adsorption Isotherms ◽  
High Surface ◽  
High Surface Area ◽  
Agricultural Biomass ◽  
Pine Nut ◽  
Biomass Materials

The objective of this research is to prepare high surface area activated carbon (AC) from agricultural biomass materials–pine nut shells–by the method of carbonization and alkaline activation. Adsorption isotherms of creatinine (CR) by pine nut shell-based high surface area activated carbon (AC) from aqueous medium have been studied. The results have been found that samples have larger capacity for removing CR from solution. The adsorption capacity of CR as intensity at first 50 min. After 50 min, it’s smooth and steady. The carbons prepared with KOH could be effectively used for the removal of CR.

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