Furan- and Thiophene-Modified Hyper-Crosslinked Polymers and Their Adsorption of Phenol from Aqueous Solution

Wang, You; Cao, Yiwen; Xu, Zhuo; Huang, Jianhan; Liu, You-Nian

doi:10.1021/acs.iecr.0c04784

Cited by 17 publications

(5 citation statements)

References 46 publications

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“…These materials demonstrated effectiveness in adsorbing iodine. Our group chemically functionalized furan, thiophene, and multiple phenolic hydroxyl on the HCPs, and our findings confirm their efficacy in removing aromatic pollutants from water. , …”

Section: Introductionsupporting

confidence: 67%

“…Our group chemically functionalized furan, thiophene, and multiple phenolic hydroxyl on the HCPs, and our findings confirm their efficacy in removing aromatic pollutants from water. 24,25 Generally, as the average pore size of the polymers is 2−6 times the molecular size of the adsorbates, the adsorption is the most efficient. 26,27 As a result, adjustment of the pore sizes for the polymers is also significant to improving the adsorption performance.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Pore Regulation of Carboxyl-Functionalized Hyper-Crosslinked Polymers and Their Efficient Aniline Adsorption

Wang,

Liang,

Cao

et al. 2024

Ind. Eng. Chem. Res.

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Herein, both surface chemistry engineering and pore partition strategies were adopted to regulate the pore environments of the hyper-crosslinked polymers (HCPs) to strengthen their aniline adsorption from water. Specifically, plentiful carboxyl groups were first anchored on the macropores of polystyrene through the nucleophilic substitution, and then abundant rigid methylene partitioned the macropores of polystyrene into abundant micropores/mesopores through the Friedel−Crafts alkylation. As a result, carboxyl-functionalized HCPs were accurately prepared as planned. PS-BTCA-HCP-4 exhibited the highest adsorption to aniline, boasting the q max of 396 mg/g, which can be largely attributed to its highest S BET of 478.0 m 2 /g and the rich carboxyl groups with the oxygen content of 11.31%. Furthermore, it achieved adsorption equilibrium within 70 min, and its deliberately hierarchical porosity consisting of plentiful micropores/mesopores made a positive contribution.

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Section: Introductionsupporting

confidence: 67%

Section: Introductionmentioning

confidence: 99%

Pore Regulation of Carboxyl-Functionalized Hyper-Crosslinked Polymers and Their Efficient Aniline Adsorption

Wang,

Liang,

Cao

et al. 2024

Ind. Eng. Chem. Res.

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“…To date, numerous techniques and methods including biological processes, ion exchange, chemical precipitation, reverse osmosis, and adsorption − have been used for phosphate treatment from water. Among them, adsorption has emerged as one of the most promising methods for removing phosphate from wastewater due to its high efficiency, cost-effectiveness, ease of operation, lack of secondary contamination, and high removal efficiency at low phosphate concentrations .…”

Section: Introductionmentioning

confidence: 99%

Adsorption and Removal of Phosphate from Wastewater Using Lignin-Based Adsorbent Modified with Lanthanide: Characterization, Performance, and Mechanisms

Zhang

Mai

Xian

et al. 2022

Ind. Eng. Chem. Res.

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Water eutrophication due to the discharge of wastewater containing phosphate has aroused considerable concern around the world, and adsorption has been identified as one of the viable solutions to solve the problem. It is crucial to develop an eco-friendly and cost-effective adsorbent for preventing eutrophication of water bodies. In this study, we developed a simple coprecipitation approach to prepare a lanthanum-based modified calcium lignosulfonate (La-CL) for treating phosphate wastewater. La-CL exhibited excellent adsorption ability for phosphate due to its high loading of lanthanum (59.29%) and large specific surface area (175.3 m2 g–1). In a wide range of pH values (2–11), the adsorption capacity of phosphate onto La-CL remained stable, and the removal rate was above 90%. The maximum adsorption capacity could reach 107 mg g–1 for phosphate at optimum pH = 7, and the adsorption reached equilibrium within 240 min. After seven consecutive regeneration adsorption experiments, La-CL could still maintain a desorption rate of more than 75%, indicating that La-CL exhibited a certain degree of regenerative performance. Moreover, the adsorption behaviors of phosphate onto the La-CL adsorbents were fitted to the Freundlich isotherm and pseudo-second-order model, suggesting chemical adsorption and a heterogeneous adsorption process. The mechanistic studies revealed that ligand exchange played a significant role in the adsorption of phosphate. This study would provide a strategy of “treating waste with waste” for removing phosphate from wastewater at low concentrations based on La-CL.

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“…The high-resolution O1s in Fig. 1 (d) also showed the C-O and C-OH con gurations at 532.26eV and 532.81 eV for β-CD-PS [4,19,20] . This further illustrates that the modi cation was successful.…”

Section: Structural Characterization Of the Polymersmentioning

confidence: 77%

Fabrication of O-enriched macroporous polymer for the efficient adsorption organic acid from aqueous solution

Fu,

Gong,

et al. 2023

J Polym Res

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Herein, an oxygen-rich polymer, namely, β-CD-PS was gained according to one-step nucleophilic substitution, and it was used to adsorb organic acids from aqueous solution. The nucleophilic substitution brought abundant functional -OH groups (the oxygen contents were 9.04 wt%,) to the polymer, and increased the hydrogen bonding between the polymer and the adsorbate. The adsorption results showed that the capacities of organic acids on β-CD-PS were much greater than chloromethylated polystyrene (CMPS). The maximum adsorption capacities of salicylic acid (SA), pyrogallic acid (PA), βnaphthol (NAP), 1,1'-bi-2-naphthol (BNAP) and gallic acid (GA) were 407.47 mg/g, 312.42 mg/g, 246.39 mg/g, 320.75 mg/g and 254.40mg/g, respectively. Langmuir model was more t for the adsorption of BNAP, PA, and GA, and Freundlich model was more suited to the adsorption of PHE, NAP, and SA. Thermodynamic analysis showed that the adsorption is a spontaneous process, furthermore, the exothermic occurred between the adsorption site and SA, NAP, and phenol (PHE) and the endothermic occurred between the adsorption site and BNAP, PA and GA. The adsorption kinetics results indicated that the time for the equilibrium of SA, PA, GA, and NAP was about 100 min, while BNAP required more time.Moreover, the adsorption of SA on β-CD-PS could achieve most adsorption at high concentrations and complete removal at low concentrations. The organic acids adsorbed on the polymer could be eluted by anhydrous alcohol and 0.01 mol/L NaOH. The β-CD-PS exhibited superior adsorption e ciency, reproducibility, and reusability, demonstrating their excellent performance for the adsorption of organic acids, and analysis of the adsorption mechanism revealed that the -OH groups played a signi cant role due to the strong hydrogen bonding interaction.

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Furan- and Thiophene-Modified Hyper-Crosslinked Polymers and Their Adsorption of Phenol from Aqueous Solution

Cited by 17 publications

References 46 publications

Pore Regulation of Carboxyl-Functionalized Hyper-Crosslinked Polymers and Their Efficient Aniline Adsorption

Pore Regulation of Carboxyl-Functionalized Hyper-Crosslinked Polymers and Their Efficient Aniline Adsorption

Adsorption and Removal of Phosphate from Wastewater Using Lignin-Based Adsorbent Modified with Lanthanide: Characterization, Performance, and Mechanisms

Fabrication of O-enriched macroporous polymer for the efficient adsorption organic acid from aqueous solution

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