Month: December 2022

Nawaz, Tehreema published the artcileSynthesis of diglycolic acid functionalized core-shell silica coated Fe3O4 nanomaterials for magnetic extraction of Pb(II) and Cr(VI) ions, Category: alcohols-buliding-blocks, the main research area is diglycolic acid functionalized magnetite lead chromium adsorption magnetic WWT.

Abstract: Amine-terminated core-shell silica coated magnetite nanoparticles were functionalized with diglycolic acid for the first time to create acid moiety on the surface of the nanoparticles. The formation of magnetite nanoparticles was scrutinized through XRD, SEM, EDS, TEM, VSM and FTIR spectroscopy. The BET surface area of nano-sorbent was found to be 4.04 m2/g with pore size 23.68 nm. These nanomaterials were then utilized to remove the Pb(II) and Cr(VI) ions from their aqueous media and uptake of metal ions was determined by at. absorption spectroscopy (AAS). A batch adsorption technique was applied to remove both ions at optimized pH and contact time with maximum adsorption efficiency for Pb(II) ions at pH 7 while for Cr(VI) ions at pH 3. Adsorption mechanism was studied using Langmuir and Freundlich isotherms and equilibrium data fitted well for both the isotherms, showing complex nature of adsorption comprising both chemisorption as well as physio-sorption phenomena. The nanosorbents exhibited facile separation by applying external magnetic field due to the ferrimagnetic behavior with 31.65 emu/g saturation magnetization. These nanosorbents were also found to be used multiple times after regeneration.

Scientific Reports published new progress about Adsorption. 110-99-6 belongs to class alcohols-buliding-blocks, name is 2,2′-Oxydiacetic acid, and the molecular formula is C4H6O5, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Yu, Xiaoxiao published the artcileA Rose bengal-functionalized porous organic polymer for carboxylative cyclization of propargyl alcohols with CO2, SDS of cas: 107-54-0, the main research area is rose bengal functionalized porous organic polymer silver nanoparticle catalyst; carboxylative cyclization catalyst propargyl alc carbon dioxide.

A Rose bengal-functionalized porous organic polymer (RB-POP) was prepared with a sp. surface area of up to 562 m2 g-1. In the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene, RB-POP supported Ag(0) nanoparticles exhibited excellent performance for catalyzing cyclization of propargyl alcs. with CO2 at 30 °C, achieving a TOF of 5000 h-1, the highest value among the reported ones.

Chemical Communications (Cambridge, United Kingdom) published new progress about Adsorption. 107-54-0 belongs to class alcohols-buliding-blocks, name is 3,5-Dimethylhex-1-yn-3-ol, and the molecular formula is C8H14O, SDS of cas: 107-54-0.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Premadasa, Uvinduni I. published the artcileUnderstanding Self-Assembly and the Stabilization of Liquid/Liquid Interfaces: The Importance of Ligand Tail Branching and Oil-Phase Solvation, Category: alcohols-buliding-blocks, the main research area is dioctyl phosphoric acid liquid interface oil phase solvation; Air-liquid interface; Interfacial analysis; Interfacial tension; Liquid-liquid interface; Molecular ordering; Nonlinear spectroscopy; Oil phase interactions; Solvent extraction; Sum frequency generation; Vibrational spectroscopy.

Organophosphorus-based ligands represent a versatile set of solvent extraction reagents whose chem. makeup plays an important role in extraction mechanism. We hypothesize that the branching of the extractant hydrophobic tail and its oil-phase solvation affect the liquid/liquid interfacial structure. Understanding the structure mediated adsorption and interfacial ordering becomes key in designing ligands with enhanced selectivity and efficiency for targeted extractions We employed vibrational sum frequency generation spectroscopy and interfacial tension measurements to extract thermodn. adsorption energies, map interfacial ordering, and rationalize disparate behaviors of model di-(2-ethylhexyl) phosphoric acid and dioctyl phosphoric acid ligands at the hexadecane water interface. With increased surface loading, ligands with branched hydrophobic tails formed stable interfaces at much lower concentrations than those observed for ligands with linear alkyl tails. The lack of an oil phase and associated solvation results in markedly different interfacial properties, and thus measurements made at air/liquid surfaces cannot be assumed to correlate with the processes occurring at buried liquid/liquid interfaces. We attribute these differences in the surface mediated self-assembly to key variations in hydrophobic interactions and tail solvation taking place in the oil phase demonstrating that interactions in both the polar and nonpolar phases are essential to understand self-assembly and function.

Journal of Colloid and Interface Science published new progress about Adsorption. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Li, Shu-Ying published the artcileTri-Stable Structural Switching in 2D Molecular Assembly at the Liquid/Solid Interface Triggered by External Electric Field, Computed Properties of 111-87-5, the main research area is liquid solid interface 2D mol assembly elec field; electric field; scanning tunneling microscopy; self-assembly; structural transition; switchable nanostructures.

A tri-stable structural switching between different polymorphisms is presented in the 2D mol. assembly of a 5-(benzyloxy)isophthalic acid derivative (BIC-C12) at the liquid/solid interface. The assembled structure of BIC-C12 is sensitive to the applied voltage between the STM tip and the sample surface. A compact lamellar structure is exclusively observed at pos. sample bias, while a porous honeycomb structure or a quadrangular structure is preferred at neg. sample bias. Selective switching between the lamellar structure and the honeycomb structure or the quadrangular structure is realized by controlling the polarity and magnitude of the sample bias. The transition between the honeycomb structure and the quadrangular structure is, however, absent in the assembly. This tri-stable structural switching is closely related to the mol. concentration in the liquid phase. This result provides insights into the effect of external elec. field on mol. assembly and benefits the design and construction of switchable mol. architectures on surfaces.

ACS Nano published new progress about Adsorption. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Computed Properties of 111-87-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Somekawa, Naoki published the artcileComputational Prediction of Adsorption Equilibrium for Nonionic Surfactants at the Oil/Water Interface, COA of Formula: C8H18O, the main research area is DFT surfactant oil water interface adsorption dodecanol octanol hexanol.

The non-Bornian solvation model has been applied for predicting the adsorption equilibrium for nonionic surfactants at the oil (O)/water (W) interface. In the non-Bornian model, the small contribution from the long-range electrostatic interaction is ignored, and the solvation or resolvation energy is formulated based on the short-range solute mol. (or ion)-solvent interactions-cavity formation, Coulomb, polarization, charge transfer, etc. These interaction energies are given by zero, first, and second-order functions of the local elec. field (Ei) on the mol. surface, which can be estimated by d. functional theory calculation In the present study, we considered an adsorption process as “”partial”” transfer of a mol. across the O/W interface. Using a non-Bornian, semi-empirical equation for the Gibbs energy of transfer of nonionic mols., the adsorption states of alkyl alcs. (1-dodecanol, 1-octanol, and 1-hexanol) at the 1,2-dichloroethane/W interface were successfully predicted. The orientation angle (θ), the rotation angle (ω), and the penetration depth into the O phase (d) of the alcs. in the adsorption state could be estimated Furthermore, the energies for the adsorption from O and W (ΔG°,O→Iad and ΔG°,W→Iad) could be estimated theor. The values of ΔG°,O→Iad for the alcs. studied were in good agreement with those determined exptl. by the drop-weight method.

Langmuir published new progress about Adsorption. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, COA of Formula: C8H18O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Bergfreund, Jotam published the artcileAdsorption of charged anisotropic nanoparticles at oil-water interfaces, Application of n-Octanol, the main research area is cellulose nanocrystal nanoparticle oil water interface adsorption energy.

The adsorption of nanoparticles at fluid interfaces is of profound importance in the field of nanotechnol. Recent developments aim at pushing the boundaries beyond spherical model particles towards more complex shapes and surface chemistries, with particular interest in particles of biol. origin. Here, we report on the adsorption of charged, shape-anisotropic cellulose nanocrystals (CNCs) for a wide range of oils with varying chem. structure and polarity. CNC adsorption was found to be independent of the chain length of aliphatic n-alkanes, but strongly dependent on oil polarity. Surface pressures decreased for more polar oils due to lower particle adsorption energies. Nanoparticles were increasingly wetted by polar oils, and interparticle Coulomb interactions across the oil phase thus increase in importance. No surface pressure was measurable and the O/W emulsification capacity ceased for the most polar octanol, suggesting limited CNC adsorption. Further, salt-induced charge screening enhanced CNC adsorption and surface coverage due to lower interparticle and particle-interface electrostatic repulsion. An empiric power law is presented which predicts the induced surface pressure of charged nanoparticles based on the specific oil-water interface tension.

Nanoscale Advances published new progress about Adsorption. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Application of n-Octanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Rodriguez-Bencomo, Juan Jose published the artcileRemoval of biogenic amines from wines by chemisorption on functionalized silica and effects on other wine components, Related Products of alcohols-buliding-blocks, the main research area is chemisorption silica wine component biogenic amine sensory analysis.

The effectiveness of several functionalized silica materials (cation-exchange materials) for the removal of biogenic amines from wines, and the effects on other wine components and organoleptic characteristics were evaluated. Results have shown that mesoporous silica material bi-functionalized with phosphonic and sulfonic acids allowed the removal of histamine, putrescine, cadaverine, spermine and spermidine from wines, although the dose must be adapted for each wine according to the removal requirements and wine characteristics. A plus of the adsorbent developed is that it can be recovered and re-used for at least 3 treatments. Immediately following the treatments, a decrease in the levels of linear Et esters (Et hexanoate, Et octanoate and Et decanoate) was observed, although these levels were re-equilibrated after several days reducing this undesired side effect. A slight, but perceptible, effect on wine color was observed, probably due to the slight decrease in the pH of the wine produced by the treatments. On the basis of the sensory anal. that focused only on the aroma of the wines, the proposed technique would be more adequate for wines aged in barrels than for young wines.

Scientific Reports published new progress about Adsorbents. 505-10-2 belongs to class alcohols-buliding-blocks, name is 3-(Methylthio)propan-1-ol, and the molecular formula is C4H10OS, Related Products of alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Chen, Yan-Mei published the artcileTheoretical insights into the possible applications of amidoxime-based adsorbents in neptunium and plutonium separation, Product Details of C8H18O, the main research area is actinide separation transuranium element interaction amidoxime adsorbent.

Efficient separation of neptunium and plutonium from spent nuclear fuel is essential for advanced nuclear fuel cycles. At present, the development of effective actinide separation ligands has become a top priority. As common adsorbents for extracting uranium from seawater, amidoxime-based adsorbents may also be able to sep. actinides from high-level liquid waste (HLLW). In this work, the complexation of Np(IV,V,VI) and Pu(IV) and alkyl chains (R = C13H26) modified with amidoximate (AO-) and carboxyl (Ac-) functional groups was systematically studied by quantum chem. calculations For all the studied complexing species, the RAc- and RAO- ligands act as monodentate or bidentate ligands. Complexes with AO- groups show higher covalency of the metal-ligand bonding than the analogs with Ac- groups, in line with the binding energy anal. Bonding anal. verifies that these amidoxime/carboxyl-based adsorbents possess higher coordination affinity toward Pu(IV) than toward Np(IV), and the Np(VI) complexes have stronger covalent interactions than Np(V). According to thermodn. anal., these adsorbents have the ability to sep. Np(IV,V,VI) and Pu(IV), and also exhibit potential performance for partitioning Pu(IV) from Np(IV) under acidic conditions. This work can help to deeply understand the interaction between transuranium elements and amidoxime-based adsorbents, and provide a theor. basis for the separation of actinides with amidoxime-based adsorbents.

Dalton Transactions published new progress about Adsorbents. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Product Details of C8H18O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Bhattacharya, Sayantani published the artcileTriphenylphosphonium conjugated quaternary ammonium based gel: synthesis and potential application in the efficient removal of toxic acid orange 7 dye from aqueous solution, Recommanded Product: Pentaerythritol tetra(3-mercaptopropionate), the main research area is triphenylphosphonium conjugated quaternary ammonium gel orange 7 removal.

Adsorptive removal of azo dyes from textile effluents is considered to be one of the most widely used means of wastewater decontamination owing to its inexpensiveness, regeneration feasibility, and overall robustness. Most importantly, this process inherently eliminates the formation of offensive end products that eventuates further disposal problems. Therefore, it is imperative to design a suitable adsorbent that has a facile synthetic route and that features high dye removal efficiency as well as substantial regeneration. Hence, in this work, we have developed an ingenious adsorbent based on the thiol-norbornene photocrosslinking reaction. To facilitate the removal of the anionic azo dye acid orange 7, we have prudently introduced quaternary ammonium as well as triphenylphosphonium functionalities in the crosslinked network. Characterization of all the monomers and the crosslinker was accomplished by using standard spectroscopic and anal. techniques. The porous morphol. of the crosslinked gel was visualized via FE-SEM and TEM anal. Addnl., rheol. studies revealed the presence of viscoelasticity in the network. Besides, the solvent uptake ability of the gel was also explored in various solvents, and it was reasonably correlated with the solubility parameter. In this regard, swelling in water was found to be particularly beneficial, as a high water uptake allowed internal adsorption sites present in the gel to be fully exposed to the dye mols., thereby ameliorating dye removal. The material showed excellent thermal stability up to 240 °C. Further, the adsorption nature of the gel correlated well with the pseudo-second order kinetic model as well as the Freundlich adsorption isotherm model. The influence of varying temperatures (303-323 K) as well as pH (2-10) on the adsorption process was also evaluated. The maximum dye removal efficiency of 105.8 mg g-1 was obtained at 303 K. Interestingly, the material was reasonably recyclable up to 10 cycles with no significant loss of re-adsorption efficiency (around 7% loss between the 1st and 10th cycle). We envisage that this strategy of developing low-cost, efficient adsorbents will expand the scope of utilizing environmentally friendly thiol-norbornene photo click chem. to alleviate water pollution.

New Journal of Chemistry published new progress about Adsorbents. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Recommanded Product: Pentaerythritol tetra(3-mercaptopropionate).

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Pereao, Omoniyi published the artcileAdsorption of Ce3+ and Nd3+ by diglycolic acid functionalized electrospun polystyrene nanofiber from aqueous solution, Computed Properties of 110-99-6, the main research area is cerium neodymium adsorption diglycolate functionalized electrospun polystyrene nanofiber wastewater.

Highly selective and stable ligands with fast kinetics for rare earth element extraction are not well developed. Durable attachment of ligands to the support would make regeneration possible. Polystyrene nanofiber supports (PS-nF) were prepared using the electrospinning method. Thereafter, PS-nf were chem. modified with diglycolic anhydride (DGA) to produce novel electrospun polystyrene diglycolic acid nanofiber (PS-DGAnf) adsorbents. The immobilization reaction proceeded via an electrophilic aromatic substitution of the ligand onto the PS nanofiber. The maximum gravimetric loading of DGA on PS nanofiber was 0.827 g g-1. The unmodified and modified nanofibers were characterized by ATR-FTIR, HR-SEM, BET and TGA. After optimizing pH, time and concentration, the equilibrium adsorption and binding kinetics of cerium (Ce3+) and neodymium (Nd3+) ions on the nanofibers surface were examined at pH 6. The adsorption capacity of PS-DGAnf for Ce3+ and Nd3+ at pH 6.0 was 152.5 mg g-1 (1.09 mmol/g) and 146.2 mg g-1 (1.01 mmol/g) resp. Selectivity of Ce3+ over Ni2+, Co2+ and Sr3+ was also studied at pH 6. The amount of Ce3+ adsorbed even in the presence of interfering ions was 100.3 mg g-1, which was only a little lower than 119.4 mg g-1 obtained in a single ion solution The rapid adsorption kinetics of Ce3+ and Nd3+ ions were achieved within 15 mins. The desorption and regeneration was carried out with 1 M nitric acid and the developed PS-DGAnf adsorbent could be reused for 4 cycles without any substantial loss to its adsorption abilities.

Separation and Purification Technology published new progress about Adsorbents. 110-99-6 belongs to class alcohols-buliding-blocks, name is 2,2′-Oxydiacetic acid, and the molecular formula is C4H6O5, Computed Properties of 110-99-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts