Author: tianli

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

Yavuz, Mustafa Selman published the artcileHighly efficient chlorinated solvent uptake by novel covalent organic networks via thiolene chemistry, Computed Properties of 7575-23-7, the main research area is covalent organic network adsorbent chlorinated solvent uptake.

In this study, an aliphatic-aromatic regular network is synthesized as a novel covalent organic networks called TEPN-1 (Thiol-ene Polymer Network) and TEPN-2 via thiol-ene chem. TEPN-1 and TEPN-2 were analyzed by FTIR, 13C-NMR, Brunauer-Emmett-Teller, thermogravimetric anal., and elemental anal. Solvent uptake capacity of TEPN-1 and TEPN-2 was employed against 26 solvents which are frequently used in chem. industry. It is found that TEPN-1 has the highest swelling adsorption ratio with chloroform and DCM (13.7 and 11.5 g.g-1, resp.), while TEPN-2 has 9.2 and 7.5 g.g-1, resp. Both TEPN-1 and TEPN-2 have very minimal water uptake (0.165 and 0.189 g.g-1, resp.). The TEPN-1 and TEPN-2 are efficient adsorbents for most of organic solvents including water-miscible organic solvents such as THF, dioxane, and pyridine.

Polymer Bulletin (Heidelberg, Germany) 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, Computed Properties of 7575-23-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Yap, Pei Lay published the artcileMultithiol functionalized graphene bio-sponge via photoinitiated thiol-ene click chemistry for heavy metal ions adsorption, COA of Formula: C17H28O8S4, the main research area is wastewater adsorption graphene oxide adsorbent uv irradiation functionalization thiol; heavy metal cation seawater remediation.

Heavy metals contamination in the natural waters remains an unresolved environmental challenge pressing for the development of purification technologies. This paper presents the green engineering of a new bio-sponge for heavy metals adsorption composed of alginate bio-polymeric network encapsulated with reduced graphene oxide (rGO) modified with iron oxide nanoparticles and covalently attached multithiol (pentaerythritol tetrakis-mercaptopropionate) mols. using photoinitiated thiol-ene click chem. The multithiol functionalized graphene bio-sponge (SH-Graphene bio-sponge) is designed to enhance adsorption performances of heavy metals including structural approach combined with oxygen functionalities and high d. of sulfur-containing groups (10.2 at % S, confirmed by XPS, XPS) with high binding affinity towards specific heavy metals (Cd and Pb). It was shown that the level of thiol functionalization on the graphene structure within the bio-sponge can be controlled by tuning the UV irradiation time without adjusting the concentration of the precursors. SH-functionalized graphene bio-sponge showed outstanding adsorption capacity for Pb (II): 101.01 mg/g and Cd (II): 102.99 mg/g, outperformed com. and literature reported adsorbents in highly competitive selectivity studies using co-existing heavy metal ions (Cu, Co, Pb and Cd) spiked- sea water. The multithiol modified bio-sponge also showcased an excellent stability and reusability feature with only 0.015 mg/L Pb (II) detected, conforming the strict United States Environmental Protection Agency (US EPA) maximum contaminant level (MCL) for lead, after five recurring cycles using mixed heavy metal ions solution and acidic eluent. The outcomes from this work present valuable and promising contribution towards the development of a scalable and sustainable adsorbents for efficient remediation of heavy metals from waters.

Chemical Engineering Journal (Amsterdam, Netherlands) 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, COA of Formula: C17H28O8S4.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Dai, Yingjie published the artcileNew use for spent coffee ground as an adsorbent for tetracycline removal in water, HPLC of Formula: 111-87-5, the main research area is SCG adsorbent tetracycline removal water adsorption wastewater treatment; Hydrogen bond; Hydrophobic interaction; Oxygen-containing functional groups; Removal ratio; π–π interaction.

Spent coffee grounds (SCG-1 and SCG-2) were used to study the adsorption of tetracycline (TC) antibiotics and the effects of adsorption time, initial pH, amount of adsorbent and ionic strength were detected. The TC adsorption isotherm on SCG-1 was compared with SCG-2. The results showed that the removal efficiencies of TC (50 mg/L) of SCG-1 and SCG-2 were 83.1% and 97.2%, resp., shake for 2 h. The probability of adsorption is high and balances in about 20 min. The estimate of parameters got for TC from the Langmuir isotherm saturated adsorption quantity and adsorption balance constant were 64.89 mg/g, 0.0557 L/mg, resp. for SCG-1 and 123.46 mg/g, 0.4735 L/mg, resp. for SCG-2. The adsorption mechanism might be a π-π interaction that occurs in the interface by hydrogen bonding and the between the TC mol. and the SCGs. At last, we found that SCG has a high adsorption size for TC.

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

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Wang, Aili published the artcileIn-situ preparation and properties of copper nanoparticles/poly(ionic liquid) composites by click chemistry within surfactant-free ionic liquid microemulsions, Category: alcohols-buliding-blocks, the main research area is copper nanoparticle polyionic liquid reduction catalyst adsorptive wastewater treatment.

Herein, we present for the first time the facile synthesis of copper nanoparticles/poly(ionic liquid) (Cu-NPs/poly-IL) composites through the in situ click method within surfactant-free ionic liquid microemulsions. The resultant Cu-NPs/poly-IL composites were further utilized for phys. adsorption and chem. catalytic reduction of methyl orange (MO) and dispersed red (DR) in water. FTIR, NMR, XRD, TGA, DSC, SEM, and UV-vis methods were used to investigate the structure and characteristics of the designed Cu-NPs/poly-IL composites. Results showed that Cu-NPs were successfully and stably introduced on poly-ILs without oxidation and that resultant composites presented enhanced thermostability and adsorption capacity for the DR. Detailed kinetic studies and thermodn. anal. of the adsorption process were carried out. Furthermore, the catalytic reduction performance of Cu-NPs/poly-IL composites for MO and DR was investigated, and results indicated that the designed composites had certain catalytic reduction effects. Therefore, the easily synthesized Cu-NPs/poly-IL composites show remarkable potentials for wastewater treatment and purification

Journal of Molecular Liquids 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, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts