Recommanded Product: 140-66-9《Chemical design of hydrogels with immobilized laccase for the reduction of persistent trace compounds in wastewater》 was published in 2021. The authors were Horn, Christoph;Pospiech, Doris;Allertz, Peter J.;Mueller, Martin;Salchert, Katrin;Hommel, Rolf, and the article was included in《ACS Applied Polymer Materials》. The author mentioned the following in the article:
Hydrogels with immobilized enzymes are increasingly applied in biocatalytic industrial processes. Here, polymer hydrogels containing 2-hydroxyethyl methacrylate (HEMA), itaconic acid (ITA), (2-((2-(ethoxycarbonyl)prop-2-en-1-yl)oxy)ethyl) phosphonic acid (ECPPA), and N,N′-diethyl-1,3-bis(acrylamido)propane (BAAP) as the cross-linker are synthesized by UV-initiated radical polymerization Laccase from Trametes versicolor (LAC) is modified by reaction with itaconic anhydride (ITAn) yielding the LAC-immobilized monomer ITA-LAC with enhanced enzyme activity. ITA-LAC paves the way to an in situ method for enzyme immobilization. Hydrogels with HEMA, ECPPA, and BAAP with stepwise varied chem. composition and functionalization are prepared The influence of the composition on the morphol., the swelling behavior, the mech. stability, and the enzymic activity is studied. The polymerization is monitored by the conversion of double bonds with in situ attenuated total reflection Fourier transform IR (ATR-FTIR) spectroscopy. The polymerization of HEMA is complete after 10 min of UV exposure, whereas hydrogels of HEMA/ITA/ECPPA (85/5/10) with 5 mol % cross-linker require 30 min. These hydrogels are compared with those containing ITA-LAC instead of ITA. The covalent binding of LAC is proven by ATR-FTIR spectroscopy and results in an enhanced enzyme activity. The incorporation of ECPPA induces pH-dependent swelling with an equilibrium degree of swelling of up to 6 at pH 8. Only a weak influence of temperature on the degree of swelling is found. The morphol. strongly depends on the hydrogel composition LAC-ITA hydrogels are characterized by an open morphol. providing access to catalytic centers. The enzyme-immobilized hydrogels are used as granules as well as coatings on porous Al2O3 ceramic substrates as biocatalysts to convert models for organic trace compounds [bisphenol A (BPA), diclofenac, p-chlorophenol (pCP), 17α-ethinylestradiol (EED), triclosan, paracetamol, and 4-tert-octylphenol]. The highest conversion after 24 h in water is achieved for triclosan (>90%), while pCP, BPA, and EED reach a conversion between 60% and 70%. The conversions are even higher in citrate buffer.4-tert-Octylphenol (cas: 140-66-9) were involved in the experimental procedure.
4-tert-Octylphenol(cas: 140-66-9) has been used as a reference standard for the determination of the analyte in water samples using ultra-high-performance liquid chromatography/tandem mass spectrometry (UHPLC/MS/MS).Recommanded Product: 140-66-9
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