Tag: M.W=100-150

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

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

Zusman, Ofri B. published the artcileDissolved organic matter adsorption from surface waters by granular composites versus granular activated carbon columns: An applicable approach, Quality Control of 111-87-5, the main research area is dissolved organic matter granular activated carbon adsorption water treatment; Dissolved organic matter; Filtration; Granules; Polymer-clay composite; Surface water.

Many new sorbents have been introduced as an alternative for granular activated carbon (GAC), the most common sorbent for dissolved organic matter (DOM) removal. In the current study, we developed an applicable granular composite based on a flocculant commonly employed for drinking water treatment adsorbed to montmorillonite. DOM adsorption from surface waters, Lake Kinneret and Suwannee River, with low and high specific UV absorption (SUVA), resp., by composite and GAC columns, was studied. Adsorption of DOM from Suwannee River was significantly higher by the composite column, in comparison to the GAC column. In-situ regeneration of the columns with a brine solution was extremely efficient and inefficient for the composite and GAC columns, resp. Adsorption, of both waters, post-regeneration by the composite column was not compromised, while GAC effectiveness decreased. The opposite trend in DOM adsorption from Suwannee River and Lake Kinneret was explained by the different affinities of the sorbents towards various DOM mols. Distinguishing between different DOM components adsorbed by GAC and the composite was supported by 13C NMR and direct pyrolysis-GC-MS measurements. Furthermore, since DOM removal by GAC and by the composite, increases, and decreases with temperature, resp., the integrated column, mitigates the changes in removal, stabilizing the adsorption performance. Such an integrated filter may minimize addnl. seasonal and water quality fluctuations.

Water Research published new progress about Adsorption. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Quality Control of 111-87-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zhang, Yang published the artcileHighly selective and sensitive probes for the detection of Cr(VI) in aqueous solutions using diglycolic acid-functionalized Au nanoparticles, Formula: C4H6O5, the main research area is diglycolic acid functionalized gold nanoparticle probe synthesis chromium detection.

In this study, a variety of diglycolic acid-functionalized gold nanoparticle (Au NP) probes are reported, which are highly sensitive for the detection of chromium ions, Cr(VI) ions, at low concentrations in aqueous solutions based on the application of surface plasmon resonance (SPR) theory. Due to its outstanding affinity for Cr(VI) ions, the capped diglycolic acid would induce the aggregation of the NP probes upon encountering them; this was evidenced by the obvious red-shifting of the SPR peak and the enlarged size of the NPs. For the same reason, the selectivity of the probe for Cr(VI) against other heavy metal ions was found to be remarkable. Under optimized conditions, the probe showed the limit of detection (LOD) of 0.32 ppb for Cr(VI) and a linear detection scale ranging from 0.32 ppb to 0.1 ppm. To the best of our knowledge, this is probably the lowest LOD reported for Cr(VI) detection among those of the methods based on SPR.

RSC Advances 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, Formula: C4H6O5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Bertanza, Giorgio published the artcileRemoval of perfluoroalkyl substances in drinking water treatment plant, Category: alcohols-buliding-blocks, the main research area is perfluoroalkyl polyfluoroalkyl drinking water treatment plant groundwater pollution control; Activated carbon; Adsorption capacity; Breakthrough; Groundwater; PFAS.

Drinking water contamination by perfluoroalkyl and polyfluoroalkyl substances (PFASs) is an issue of relatively recent concern. The literature indicates that anion exchange resins and granular activated carbon (GAC) are suitable technologies for removing these compounds While several laboratory-scale and pilot-scale experiments have been conducted to study activated carbon adsorption/desorption mechanisms of a number of PFASs, little data on full-scale plants are available. This work examines a real case of groundwater contamination by PFASs in an area of approx. 200 km2. The performance of the main drinking water treatment plant in the area (flowrate = 30,000 m3/d; 100,000 people served), which is equipped with GAC filters, was analyzed. Approx. 17,000 anal. data points from a working period of five years were processed. Perfluorobutyric acid (PFBA) was the first compound to attain breakthrough, followed by perfluoropentanoic acid, perfluorohexanoic acid, perfluorobutanesulfonic acid, and perfluorooctanoic acid (PFOA). The adsorption capacity and treated bed volumes at complete breakthrough (saturation) were calculated, and ranged from 1.71 g/t and 7100 (PFBA) to 24.6 g/t and 50,900 (PFOA), with the total organic carbon concentration in the groundwater ranging from <0.1 to 0.5 mg/L. The overall adsorption capacity was approx. 40 g of total PFASs/t. The breakthrough behavior of PFASs was correlated with the C-F chain length, the type of hydrophilic head (either carboxyl or sulfonic), and the n-octanol/water partition coefficients logP and logD. The results corroborate the findings of previously published bench-scale and pilot-scale experiments Science of the Total Environment 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

Lone, Irfan H. published the artcileQuenching assisted reverse micellar synthesis and electrical properties of high surface area BiFeO3 nanoparticles, COA of Formula: C8H18O, the main research area is bismuth iron oxide nanoparticle quenching elec property.

Multiferroic compounds are prime important materials for future electronic and magnetic devices and overcome the fundamental limits of conventional materials. In present work, we reported the preparation of purely one phase of nano-sized BiFeO3 compound by microemulsion micellar method for the first time by employing rapid quenching of sample at 500°C, that is the main driving force to get the pure phase of BiFeO3 nanoparticles at low temperature method. The nanoparticles that we obtained were almost uniform with sphere shaped and these prepare nanoparticles possess high surface. The increase in permittivity in the form of dielec. constants were reported that depends on temperature and frequency that supports the ferroelec. nature and was further confirmed by the ferroelec. loops even at the room temperature has been found in theses prepared nanoparticles.

Journal of Nanoscience and Nanotechnology 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

Haque, Najirul published the artcileZn(II)-Embedded Nanoporous Covalent Organic Frameworks for Catalytic Conversion of CO2 under Solvent-Free Conditions, Recommanded Product: 3,5-Dimethylhex-1-yn-3-ol, the main research area is zinc embedded nanoporous covalent organic framework catalytic conversion CO2.

Covalent organic frameworks (COFs) have been gaining substantial attention over the past decade due to their developing crystalline porous polymeric nature linked by strong covalent bonds and widespread applications in various fields. Currently, three-dimensional COFs (3D COFs) are engaging the spotlight due to their distinctive porous features, greater surface area, and exceptional performances in comparison with formerly published two-dimensional (2D) frameworks with the AA-stacking layered mode. In this paper, we present, for the first time, a nanoporous 3D-COF-based zinc(II) catalyst (Zn@RIO-1), which shows an efficient pathway for the chem. conversion of carbon dioxide to produce α-alkylidene cyclic carbonates and oxazolidinones from propargylic alcs. The microporous material with a high surface area (312.61 m2/g) facilitates both types of catalytic reactions under atm. CO2 pressure. More importantly, easily recyclable and reusable catalysts produced moderate to high yields of desired carbonates as well as oxazolidinone products under solvent-free conditions. This study emphasizes the capability of nanoporous 3D-COF-based material in the catalysis field, more specifically in the field of CO2 capture and chem. fixation to fine chems. These results pave a spectacular pathway for the chem. fixation of CO2 into α-alkylidene cyclic carbonates and oxazolidinones from propargylic alcs. using 3D-COF as a potential heterogeneous ligand under sustainable conditions (i.e., solvent-free).

ACS Applied Nano Materials 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, Recommanded Product: 3,5-Dimethylhex-1-yn-3-ol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Ohno, Tsutomu published the artcileAdsorption of Organic Acids and Phosphate to an Iron (Oxyhydr)oxide Mineral: A Combined Experimental and Density Functional Theory Study, Product Details of C4H6O5, the main research area is adsorption organic acid phosphate iron oxyhydroxide mineral soil.

The interaction of soil organic matter with mineral surfaces is a critical reaction involved in many ecosystem services, including stabilization of organic matter in the terrestrial carbon pool and bioavailability of plant nutrients. Using model organic acids typically present in soil solutions, this study couples laboratory adsorption studies with d. functional theory (DFT) to provide phys. insights into the nature of the chem. bonding between carboxylate functional groups and a model FeOOH cluster. Topol. determination of electron d. at bond critical points using quantum theory of atoms in mols. (QTAIM) anal. revealed that the presence of multiple bonding paths between the organic acid and the FeOOH cluster is essential in determining the competitive adsorption of organic acids and phosphate for FeOOH surface adsorption sites. The electron d. and Laplacian parameter values from QTAIM indicated that the primary carboxylate-FeOOH bond was more ionic than covalent in nature. The exptl. and computational results provide mol.-level evidence of the important role of electrostatic forces in the bonding between carboxylic acids and Fe-hydroxides. This knowledge may assist in the formulation of management studies to meet the challenges of maintaining ecosystems services in the face of a changing climate.

Journal of Physical Chemistry A published new progress about Adsorption. 97-67-6 belongs to class alcohols-buliding-blocks, name is (S)-2-hydroxysuccinic acid, and the molecular formula is C4H6O5, Product Details of C4H6O5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Qian, Jiasheng published the artcileOne-Step Nanoextraction and Ultrafast Microanalysis Based on Nanodroplet Formation in an Evaporating Ternary Liquid Microfilm, Name: n-Octanol, the main research area is ternary liquid microfilm nanodroplet formation nanoextn microanalysis.

Preconcentration is key for detection from an extremely low concentration solution, but requires separation steps from a large volume of samples using extracting solvents. Here, a simple approach is presented for ultrafast and sensitive microanal. from a tiny volume of aqueous solutions In this approach, liquid-liquid nanoextn. in an evaporating thin liquid film on a spinning substrate is coupled with quant. anal. in one step. The approach is exemplified using a liquid mixture comprising a target compound to be analyzed in water, mixed with extractant oil and co-solvent ethanol. With rapid evaporation of ethanol, nanodroplets of oil form spontaneously in the film. The compounds are highly concentrated by liquid evaporation and meanwhile extracted to nanodroplets. A detection limit of nanomolar to picomolar is demonstrated for fluorescent model compounds in only â‰?μL of solution with the entire process taking â‰?0 s. The combination of nanoextn. and IR microscopy also enables simultaneous chem. identification. The dynamics of thin film evaporation are revealed using fast imaging. The principle behind this approach is general, providing a powerful technique for fast and sensitive chem. anal. of a vast library of compounds for environment monitoring, national security, early diagnosis, and many other applications.

Advanced Materials Technologies (Weinheim, Germany) published new progress about Absorption. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Name: n-Octanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Marques, Carolina S. published the artcileAmbipolar pentacyclic diamides with interesting electrochemical and optoelectronic properties, COA of Formula: C4H11NO2, the main research area is pentacyclic diamide organic thin film transistor electrochem optoelectronic property.

Developing organic semiconductors for organic thin film transistors (OTFT) and optoelectronic applications is a challenge. We developed highly crystalline pentacyclic diimides (3) and (4) which showed good OTFT and OLED potential and energy gaps of 2.60 eV and 2.54 eV. They exhibited interesting photo and eletroluminescence activity. Both compounds showed good quantum yields (0.56 for (3) and 0.60 for (4)).

Chemical Communications (Cambridge, United Kingdom) published new progress about Absorption. 22483-09-6 belongs to class alcohols-buliding-blocks, name is 2,2-Dimethoxyethanamine, and the molecular formula is C4H11NO2, COA of Formula: C4H11NO2.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts