Highly-efficient adsorption behavior of mesoporous Co-HDIPT toward both anionic and cationic organic dyes

Zheng, Wanhao; Xu, Zhongshuang; Zhang, Xia

doi:10.1007/s10934-022-01214-4

Cited by 5 publications

(2 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Second, as illustrated in Figure S27, the benzene ring vibration peak intensity (1580 cm –1 ) of 1 and 2 becomes weak after adsorption of MG molecules, which is attributed to the π–π interaction between the conjugated benzene rings of 1 and 2 and the MG molecule . The peak (1662 cm –1 ) of the −CO groups in 1 and 2 became weak after adsorption of MG molecules, indicating that there was hydrogen bonding between 1 / 2 and MG molecules . Furthermore, the calculation results show that the MG molecule exhibits electropositive and 1 and 2 are partially electronegative (Figure ), which indicates that there is an electrostatic interaction between 1 / 2 and MG molecules.…”

Section: Adsorption Studymentioning

confidence: 92%

“…43 The peak (1662 cm −1 ) of the −C�O groups in 1 and 2 became weak after adsorption of MG molecules, indicating that there was hydrogen bonding between 1/2 and MG molecules. 44 Furthermore, the calculation results show that the MG molecule exhibits electropositive and 1 and 2 are partially electronegative (Figure 10), which indicates that there is an electrostatic interaction between 1/2 and MG molecules. Meanwhile, as shown in Tables S4 and S5, the descending order of binding energy between 1/2 and dye molecules is 2117.36 kcal mol −1 (MG@1) > 2021.93 kcal mol −1 (RhB@1) > 888.52 kcal mol −1 (MO@1) > 667.86 kcal mol −1 (MB@1), 802.66 kcal mol −1 (MG@2) > 789.36 kcal mol −1 (RhB@2) > 766.02 kcal mol −1 (MO@2) > 525.80 kcal mol −1 (MB@2), respectively, which indicates that 1 and 2 have strong adsorption capacity for MG molecules.…”

Section: Recyclability Of 1 Andmentioning

confidence: 96%

See 1 more Smart Citation

Bifunctional Zn Coordination Polymers for High-Performance Fluorescence Turn-On Detection of l-Glutamate and Adsorption of Malachite Green in Aqueous Medium

Gao

Zhang

2023

Crystal Growth & Design

View full text Add to dashboard Cite

Two time-induced Zn(II) coordination polymers (CPs), namely {[Zn(BIPA-TC)0.5(1,3-bimb)]·0.75DMF} n (1) and {[Zn(BIPA-TC)0.5(1,3-bimb)]·0.5EtOH·DMF·H2O} n (2) were constructed based on 5,5′-(1,3,6,8-tetraoxybenzo[3,8]phenanthroline 2–7-substituent) bis-1,3-benzoic acid (H4BIPA-TC) and zinc salts. The structure analysis showed that 1 is 3D networks with the point symbol {62, 84} {64, 82}2 and 2 is 2D layered structures with the point symbol of {4, 64, 8}2 {42, 64}. Interestingly, the transformation from single crystal 1 to 2 is only due to the prolongation of reaction time, which can be confirmed by structural analysis and powder X-ray diffraction patterns. Meanwhile, the fluorescence sensing properties of 1 and 2 showed that both 1 and 2 had high sensitivity for l-glutamate with limits of detection of 0.10 (1) and 0.13 μM (2). The fluorescence mechanism analysis showed that the fluorescence enhancement of 1 and 2 is attributed to absorbance caused enhancement and photoinduced electron transfer. In addition, 1 and 2 can also be used as recyclable adsorbents to remove malachite green (MG) in aqueous medium. The adsorption isotherms and kinetics of both 1 and 2 follow the Freundlich model and the quasi-second-order kinetic model, respectively. The maximum equilibrium adsorption capacities of 1 and 2 for MG can reach 351.06 and 250.45 mg/g, respectively. The excellent adsorption properties of 1/2 for MG can be attributed to π–π interaction, hydrogen bonding, and electrostatic interaction between 1/2 and the MG molecule. Therefore, 1 and 2 have potential application prospects in fluorescence recognition and adsorption.

show abstract

Section: Adsorption Studymentioning

confidence: 92%

Section: Recyclability Of 1 Andmentioning

confidence: 96%