In-situ conversion of geopolymer into novel floral magnetic sodalite microspheres for efficient removal of Cd(II) from water

Su, Qiaoqiao; Wang, Xiang; Yang, Guangyao; Ou, Zhaohui; Zhou, Zhicheng; Huang, Ronghua; Shi, Caijun

doi:10.1016/j.jhazmat.2023.131363

Cited by 14 publications

(2 citation statements)

References 67 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In Figure S4, the peak area of carbonyl at 1710 cm −1 from UiO-66-(COOH) 2 obviously decreased after Cd 2+ adsorption, and the stretch vibration peak of O−H shifted from 3363 to 3319 cm −1 , which was due to the possible coordination interaction between free carboxyl groups and cadmium ions. The enhanced peak at 33 Figure 7a,e possesses Cd elements as evident from its respective binding energy at 405.07 eV, wherein verified the presence and successful binding of Cd species to the employed UICLF-2 membrane after adsorption. In comparison to the origin C 1s spectrum before adsorption (Figure 2b), the peaks of Zr−O−C�O and OH−C�O positively shifted to the binding energies of 287.91 and 288.70 eV in Figure 7b, respectively.…”

Section: ■ Results and Discussionmentioning

confidence: 56%

“…The enhanced peak at 1400 cm –1 after Cd 2+ adsorption can be attributed to NO 3 – for charge balance. Weakened and widened characteristic peak of Zr-μ3-O at 750 cm –1 , red-shifted Zr–O–CO peak, and the appearance of a new peak around 675 cm –1 were probably attributed to the Zr–O–Cd formation through coordination Figure a,e possesses Cd elements as evident from its respective binding energy at 405.07 eV, wherein verified the presence and successful binding of Cd species to the employed UICLF-2 membrane after adsorption.…”

Section: Resultsmentioning

confidence: 98%

See 1 more Smart Citation

Support Platform of Functionalized Sustainable Cellulose Self-Entanglement Monolithic Adsorbents for Efficient Adsorption of Cadmium(II) Ions

Dai,

Zhu,

et al. 2024

Langmuir

View full text Add to dashboard Cite

Serious water contamination induced by massive discharge of cadmium(II) ions is becoming an emergent environmental issue due to high toxicity and bioaccumulation; thus, it is extremely urgent to develop functional materials for effectively treating with Cd 2+ from wastewater. Benefiting from abundant binding sites, simple preparation process, and adjustable structure, UiO-66-type metal−organic frameworks (MOFs) had emerged as promising candidates in heavy metal adsorption. Herein, monolithic UiO-66-(COOH) 2 -functionalized cellulose fiber (UCLF) adsorbents were simply fabricated by incorporating MOFs into cellulose membranes through physical blending and self-entanglement. A two-dimensional structure was facilely constructed by cellulose fibers from sustainable biomass agricultural waste, providing a support platform for the integration of eco-friendly UiO-66-(COOH) 2 synthesized with lower temperature and toxicity solvent. Structure characterization and bath experiments were performed to determine operational conditions for the maximization of adsorption capacity, thereby bringing out an excellent adsorption capacity of 96.10 mg/g. UCLF adsorbent holding 10 wt % loadings of UiO-66-(COOH) 2 (UCLF-2) exhibited higher adsorption capacity toward Cd 2+ as compared to other related adsorbents. Based on kinetics, isotherms, and thermodynamics, the adsorption behavior was spontaneous, exothermic, as well as monolayer chemisorption. Coordination and electrostatic attraction were perhaps mechanisms involved in the adsorption process, deeply unveiled by the effects of adsorbate solution pH and X-ray photoelectron spectroscopy. Moreover, UCLF-2 adsorbent with good mechanical strength offered a structural guarantee for the successful implementation of practical applications. This study manifested the feasibility of UCLF adsorbents used for Cd 2+ adsorption and unveiled a novel strategy to shape MOF materials for wastewater decontamination.

show abstract

Section: ■ Results and Discussionmentioning

confidence: 56%

Section: Resultsmentioning

confidence: 98%