Journal: Small Methods

Article Title: Tailorable Nanoparticles for Magnetic Water Cleaning of Polychlorinated Biphenyls

doi: 10.1002/smtd.202500537

Figure Lengend Snippet: Schematic approach of magnetically removing PCBs from water via surface‐functionalized SPIONs. a) An aqueous PCB solution i) is treated with functionalized SPIONs, onto which the contaminants adsorb ii). The SPIONs can be magnetically collected carrying the PCBs iii). b) Scope of investigated PCBs (Biphenyl, PCB 2, PCB 14, and PCB 77) as well as SPION surface modifications (PAC 16 , PAC 10 Ph, PAC 3 Imi+, PAC 3 Imi+/PAC 16, and PAC 3 Imi+/PAC 10 Ph) tailored to address the PCBs non‐covalently. The electrostatic potential maps were calculated for electron density isovalue surfaces as described in the supporting information and range from −0.8 V (blue) to +0.8 V (red) for all molecules except PAC 3 Imi+ where red indicates +5.3 V.

Article Snippet: PCB 77 (99.8 %) was purchased from LGC Standards.

Techniques:

Journal: Small Methods

Article Title: Tailorable Nanoparticles for Magnetic Water Cleaning of Polychlorinated Biphenyls

doi: 10.1002/smtd.202500537

Figure Lengend Snippet: Magnetically removed amounts of biphenyl and PCBs depending on the molecular coating of the SPIONs. Aqueous solutions of 7 mL initially contained 7 nmol (1 µ m ) of pollutant at neutral pH and were treated with 5.0 ± 0.1 mg of SPIONs. Hydrophobic PAC 16 @SPIONs and PAC 10 Ph@SPIONs remove biphenyl, PCB 2, and PCB 14 more efficiently with a trending increase for less water solubility, while PAC 3 Imi+@SPIONs drastically outperforms them for PCB 77 despite it being the least water‐soluble. Binary SAMs on SPIONs show performances in between the extrema. Data are represented as mean ± standard deviation ( n = 6).

Article Snippet: PCB 77 (99.8 %) was purchased from LGC Standards.

Techniques: Solubility, Standard Deviation

Journal: Small Methods

Article Title: Tailorable Nanoparticles for Magnetic Water Cleaning of Polychlorinated Biphenyls

doi: 10.1002/smtd.202500537

Figure Lengend Snippet: Magnetically removed amounts of biphenyl and PCBs from mixtures depending on the molecular coating of the SPIONs. Aqueous solutions of 7 mL initially contained 7 nmol (1 µ m ) of each pollutant, i.e., 28 nmol in sum, at neutral pH and were treated with 5.0 ± 0.1 mg of SPIONs. The top graph shows magnetically removed amounts and the bottom graph the respective normed shares of biphenyl and each PCB. Overall, PCB 14 is removed best by the hydrophobic adsorbents. The preference of PAC 3 Imi+@SPIONs for PCB 77 can be integrated into the behavior of the hydrophobic systems as results with PAC 3 Imi+/PAC 16 @SPIONs and PAC 3 Imi+/PAC 10 Ph@SPIONs show. Data are represented as mean ± (Gaussian error propagated) standard deviation ( n = 6).

Article Snippet: PCB 77 (99.8 %) was purchased from LGC Standards.

Techniques: Standard Deviation