Table 2 Adsorption of metal ions by PPDA-CMP-1, 2, and 3 and PPDA synthesized in solution phase

From: 2D conjugated microporous polyacetylenes synthesized via halogen-bond-assisted radical solid-phase polymerization for high-performance metal-ion absorbents

Entry

CMP

Metal Solution (0.1 wt% (1000 ppm) of metal ion+)

Amount of metal ion adsorbed per CMP (mg/g CMP)a

1

PPDA-CMP-1

LiOH

312

2

PPDA-CMP-2

LiOH

84

3

PPDA-CMP-3

LiOH

228

C1

PPDA synthesized in solution

LiOH

54

4

PPDA-CMP-1

LiOH + RbOH + CsOH 

306 (Li+) and 0 (Rb+)b

5

PPDA-CMP-2

LiOH + RbOH + CsOH

72 (Li+) and 4 (Rb+)

6

PPDA-CMP-3

LiOH + RbOH + CsOH

168 (Li+) and 84 (Rb+)

7

PPDA-CMP-1

LiOH + RbOH + CsOH

196

8

PPDA-CMP-2

NH4BF4

17

9

PPDA-CMP-3

NH4BF4

0

C2

PPDA synthesized in solution

NH4BF4

7

  1. aThe metal ion adsorption was determined with ICP-OES (Supplementary Table 6).
  2. bThe amount of Cs+ adsorbed per CMP was nearly zero according to the XPS analysis (Fig. 3c).
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