Preparation and ion separation properties of sub-nanoporous PES membrane with high chemical resistance was written by Wu, Shuhang;Cheng, Yaxiong;Ma, Jie;Huang, Qinggang;Dong, Yuhua;Duan, Jinglai;Mo, Dan;Sun, Youmei;Liu, Jie;Yao, Huijun. And the article was included in Journal of Membrane Science in 2021.Quality Control of Tetramethylammonium chloride The following contents are mentioned in the article:
The sub-nanochannel materials have attracted extensive attention because of the great potentials in ion separation and water filtration due to their unique ionic transport properties. However, effectively preparing the sub-nanoporous membranes with tunable channel size is still a challenge. In this study, a green and convenient method is introduced to prepare sub-nanoporous polyethersulfone (PES) membrane with highly aligned channels by swift heavy ion irradiation, UV sensitization, and water rinse. Through adjusting the membrane’s UV sensitization time, the channel diameter of sub-nanoporous PES membrane can be facilely regulated at sub-nanoscale, which is essential to design the tailor-made membranes for specific applications. It is found that ionic transport in sub-nanoporous PES membrane exhibits voltage-activated features associated with the ionic dehydration at angstrom-confined space, with the corresponding I-V characteristics showing a dependence on ion species, channel size, and solution pH. Such a membrane can work as an excellent ion-exchange membrane in electrodialysis ion separation, exhibiting a separation ratio of K+:Na+:Li+:Mg2+ as high as 83:56:14:1 and K+ transport rate up to 0.82 mol h-1 m-2 under 10 V driving force. It is proved that the sub-nanoporous PES membrane also possesses strong chem. and electrochem. tolerances, which are the prerequisites for future utilizations. This study involved multiple reactions and reactants, such as Tetramethylammonium chloride (cas: 75-57-0Quality Control of Tetramethylammonium chloride).
Tetramethylammonium chloride (cas: 75-57-0) belongs to organic chlorides. Organochlorines stimulate the central nervous system and cause convulsions, tremor, nausea, and mental confusion. Examples are dichlorodiphenyltrichloroethane (DDT), chlordane, lindane, endosulfan, and dieldrin. Alkyl chlorides are versatile building blocks in organic chemistry. While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available.Quality Control of Tetramethylammonium chloride
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics