![](images/graphics/blank.gif)
Characterization and immobilization
-
Part 2 book "Engineering of polymers and chemical complexity ( Vol 1 - Current state of the art and perspectives)" includes content: CNT/polymer nanocomposites - A detailed review on mathematical modeling and experimental case studies; orientation controlled immobilization strategy for B galactosidase on alginatebeads; preparation, characterization, and evaluation of waterswellable hydrogel via grafting cross linked polyacrylamide chains onto gelatin backbone by free radical polymerization,...and other contents.
325p
muasambanhan09
12-03-2024
5
1
Download
-
The rGO/CueCu2O deposited on the electrode surface was confirmed by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, confocal microscopy, and electrochemical characterization. The analytical performance of the proposed rGO/CueCu2O-modified electrode was also compared with the CuO/rGO-modified electrode using commercial CuO nanoparticles.
11p
viberbers
09-08-2023
7
3
Download
-
The conversion of fumaric acid into L-malate by fumarase immobilized on silanized nanostructures was analyzed experimentally. The enzyme was bound to the silanized nanostructures. We carried out scanning electron microscopy (SEM), fourier transform infrared spectroscopy (FTIR) analysis, zeta size analysis and surface area calculation for the characterization of the nanostructures. The effect of initial enzyme concentration and pH on immobilization procedure were investigated and the change of Michaelis-Menten constants (Km and Vmax) with immobilization was examined.
8p
lyhuyenthu
31-01-2023
5
1
Download
-
In order to develop safer processes for the food industry, we prepared a chitosan support with the naturally occurring crosslinking reagent, genipin, for enzyme. As application model, it was tested for the immobilization of -d-galactosidase from Aspergillus oryzae.
7p
vihermione
06-01-2023
7
2
Download
-
This report details the design of carboxymethylated cashew gum (CG) as a platform for antibody (Ab) immobilization, which can then be used as a biosensor for bacteria detection. The CG was isolated and characterized, followed by conversion to carboxymethyl cashew gum (CMCG).
8p
vihermione
06-01-2023
22
3
Download
-
A new hybrid bionanomaterial composed of zinc oxide nanoparticles (ZnO NPs) and chitosan was constructed after enzymatic immobilization of papain for biomedical applications. In this work, we report the preparation and characterization steps of this bionanomaterial and its biocompatibility in vitro.
10p
viginny
30-12-2022
10
3
Download
-
Immobilized metal chelate affinity chromatography (IMAC) support was practiced for α-amylase immobilization. Poly(hydroxyethylmethacrylate-methacryloylamidotryptophan)-Ni2+[p(HEMA-MAT)-Ni2+] nanospheres, average diameter 100 nm, were produced by surfactant free emulsion polymerization. Characterizations of p(HEMAMAT)-Ni2+ nanospheres were carried out by Fourier transform infrared (FTIR) spectroscopy and scanning electron microscope (SEM). In addition, average particle size, size distribution, and surface charge were specified.
13p
langthannam
29-12-2021
14
1
Download
-
A novel melamine–formaldehyde resin (MFR) supported solid acid with Lewis and Brønsted acid sites was synthesized through the immobilization of acidic ionic liquid and cuprous ion on MFR. The scanning electron microscopy (SEM) characterization showed that addition of PEG-2000 in the synthesis of MFR could promote the formation of regular particles with diameters around 3.7 µm. The XRD pattern demonstrated that some cuprous ions were aggregated.
7p
langthannam
29-12-2021
7
0
Download
-
The surface of mesocellular silica foam (MCF) was modified by grafting 3-aminopropyl-triethoxysilane (APTES) to have a positive charge, and thus to provide sites for the immobilization of H3PW12O40(PW12). This modified nanosized mesoporous silica (PW12-APTES@MCF) was characterized by FTIR, XRD, BET, and TEM. XRD and adsorption–desorption analysis shows that the mesostructure of silica remains intact after various modifications, while the spectral technique shows the successful grafting of the neat PW12 inside the porous silica support.
9p
langthannam
29-12-2021
8
0
Download
-
The synthesized catalyst was characterized by several physico-chemical and spectroscopic methods. This immobilized complex was found to be an efficient heterogeneous catalyst for the oxidation of different sulfides and hydrocarbons using hydrogen peroxide (H2 O2) as an oxidant. The catalyst is readily recovered by simple magnetic decantation and can be recycled several times with no considerable loss of catalytic activity.
16p
langthannam
29-12-2021
15
0
Download
-
The immobilization method and atomic concentrations of Si 2p, Au 4f, S 2p, C 1s, N 1s, and O 1s of the resulting SA–biotin modified Si surface were determined by XPS. The CD spectrum and confocal microscopy imaging confirmed that step-by-step modification and bioconjugation can be monitored successfully. Such detailed and well-defined step-by-step characterization provides good information about the surface properties of biosensor platforms. In addition, the LSPR sensing ability of the Au Np based platforms was studied by using a model SA–biotin system.
17p
langthannam
29-12-2021
8
0
Download
-
The synthesis and characterization of ethylenediaminetetraacetic acid immobilized activated carbon cloth was performed in the present work. It was used for preconcentration-separation of lead(II), cobalt(II), and nickel(II) at trace levels as an adsorbent. Factors including pH, concentration and volume of eluent, sample and eluent flow rates, sample volume, and effect of coexisting ions on the solid phase extraction of analytes were examined. The preconcentration factor was 50.
12p
langthannam
29-12-2021
14
0
Download
-
In the present study, ZnO nanostructures were synthesized and immobilized on the surface of diatomite via a simple sonochemical method for the photocatalytic degradation of formaldehyde in the aqueous phase. The characterization of as-prepared ZnO/diatomite nanocomposite was carried out by means of scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FT-IR). The photocatalysis of formaldehyde was favored at neutral pH. At a ZnO to diatomite ratio of 0.3, increasing the photocatalyst dosage from 0.2 to 1.
10p
langthannam
29-12-2021
4
0
Download
-
In the present study, ZnO nanostructures were ultrasonically synthesized and immobilized on the surface of diatomite and used for visible light photocatalysis of Acid Red 88 (AR88) in the aqueous phase. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) analyses were employed for characterization of the samples. The process was optimized via response surface methodology (RSM) on the basis of central composite design (CCD).
13p
langthannam
29-12-2021
8
0
Download
-
This paper presents the results of an investigation of the properties of a modified platinum electrode with meso-tetraphenylporphyrin iron(III) complex immobilized in Nafion film and its catalytic activity in the electrochemical oxidation of selected hydroquinone and catechol derivatives. The redox activity of iron complexes of porphyrins was characterized in aqueous solutions of perchloric acid by means of cyclic voltammetry and differential pulse voltammetry.
14p
langthannam
29-12-2021
4
0
Download
-
The present paper describes in situ green immobilization of silver nanoparticles on MnFe2O4@SiO2 nanospheres using Epilobium parviflorum (EP) without using any other toxic chemicals and reducing or stabilizing agents.
12p
langthannam
29-12-2021
11
0
Download
-
In this study, the DNA fragment encoding for the C-terminus domain of the AopB from Aeromonas hydrophila AH-1 was cloned into pET-M expression vector and expressed in Escherichia coli BL21 (DE3) host cells. The recombinant AopB-C-terminus domain was successfully purified using immobilized nickel affinity chromatography as a soluble form. Crosslinking analysis among AopB-C-terminus molecules in solution showed that this domain existed as a mixture of tetramer, trimer, dimer, and monomer forms.
6p
guitaracoustic02
08-12-2021
18
3
Download
-
An efficient and inexpensive monolithic stationary phase (PHEMA-HA) has been prepared through an easy process comprising addition of humic acid (HA) to a mixture of 2-hydroxyethyl methacrylate (HEMA) and N,N’- methylenebisacrylamide (MBAAm) and subsequent radical-polymerization at –20 ◦ C. The prepared monolithic material was characterized in terms of various techniques and methods such as elemental analysis, FTIR spectroscopy, scanning electron microscopy, mercury porosimetry, hydrolytic stability tests, pHpzc measurements, water-holding capacity, and water permeability.
16p
tudichquannguyet
29-11-2021
10
1
Download
-
Herein we synthesized Cu(II) immobilized on Fe 3 O4 @Agarose functionalized with ethanolamine phosphate– salicylaldehyde Schiff base (Fe 3 O4 @Agarose/SAEPH2 /Cu(II)) as a new and cost-effective nanomagnetic catalyst. The nanomagnetic catalyst was characterized by FT-IR, XRD, VSM, SEM-EDX, TEM, TGA, and ICP techniques and it was found that the particles were about 9–25 nm in size and spherical with entrapment of the Fe 3 O4 particles in the hollow pore structure of the agarose.
69p
tudichquannguyet
29-11-2021
13
1
Download
-
This work reports an electrochemical sensor with a modified glassy carbon electrode for the detection of kaempferol. The method was tailored by the immobilization of multiwalled carbon nanotubes (MWCNTs) assimilated with Fe2O3 nanoparticles (NPs) onto the electrode surface to detect kaempferol using differential pulse voltammetry. Thermogravimetric, transmission electron microscopic, cyclic, and differential voltammetric techniques were employed to characterize the developed electrochemical sensor. The kaempferol produces an anodic quasireversible peak at pH 6.
15p
tudichquannguyet
29-11-2021
8
1
Download
CHỦ ĐỀ BẠN MUỐN TÌM
![](images/graphics/blank.gif)