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Carbon nanotubes in an electric field
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Apr 21, 2022
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Cambridge Materials
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What happens to carbon nanotubes placed in an electric field?
The video shows the aligning of carbon nanotubes when placed in an electric field.
COF
Chemical Engineering Journal
Volume 421, Part 2, 1 October 2021, 127837
Chemical Engineering Journal
Functional covalent organic framework for exceptional Fe2+, Co2+ and Ni2+ removal: An upcycling strategy to achieve water decontamination and reutilization as smoke suppressant and flame retardant simultaneously
Author links open overlay panelYulingXiaoChaoMaZiyuJinJunlingWangLingxinHeXiaoweiMu
LeiSong
YuanHu
Abstract
A key challenge for wastewater remediation is to develop desirable adsorbents possessing abundant approachable binding sites to realize both ultra-fast capture and ultra-high absorbance for heavy metal ions. Herein, we illustrate how the three-dimensional porous covalent organic framework (COF) displays the right combination of properties, thus offering a platform for decorative chelating sites to address heavy-metal poisoning. The rational design is demonstrated by modifying polydopamine (PDA) on COF, which aims at anchoring plentiful functional groups, especially catechol groups to bind heavy metal ions. The obtained PDA-coated COF (COF@PDA) achieves rapid capture of Fe2+, Co2+ and Ni2+, and reaches adsorption equilibrium within 10 s. According to the Langmuir fitting, the calculated capture capacities of COF@PDA for Fe2+, Co2+ and Ni2+ equal 204.9, 194.2, and 207.5 mg/g, respectively. Thermodynamic studies confirmed the spontaneous and exothermic characteristic of the adsorption process. Adhering to the concept of green chemistry and sustainable development, the good catalytic performance of transition metal ions intrigues us to further investigate its flame retardant application after recovering from sewage. The “recycling” strategy of adsorbed metal ions enables the reduction of fire hazards (heat, smoke and toxic gas) of polystyrene (PS) while retaining the mechanical properties of PS composites.
https://www.sciencedirect.com/science/article/abs/pii/S1385894720339565
Chemical engineer fired over racist, homophobic meltdown on flight
By Snejana Farberov
September 5, 2022 9:01am Updated
Zachary Easterly was terminated by his employer, pharmaceutical and biotech company GlaxoSmithKline, after cellphone recordings surfaced showing the employee having an epic, booze-fueled meltdown shortly after boarding a flight at the Philadelphia International Airport, TMZ reported….
…. Just before leaving, Easterly whips around and declares that he is a chemical engineer who works for GlaxoSmithKline.
“I’m going to quit the f—ing job this week,” he says, before boasting that his soon-to-be former employer is “one of the best f—ing companies in the world.”
The incident took place aboard a flight from Philadelphia to Dallas last Tuesday. By Thursday, GlaxoSmithKline announced that Easterly had been terminated by the company.
The London-based multinational pharmaceutical giant released a statement condemning the engineer’s remarks as “reprehensible” and not reflecting the company’s culture.
https://nypost.com/2022/09/05/chemical-engineer-fired-over-racist-homophobic-meltdown-during-flight/