JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
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2021
·Vol. 35
·期 6
·1021-1030
·
IF 0.957
Wei Junchong,Long Xuejun,Wang Jia,Tang Zheng,Wang Tingting,Kang Hanyu,Liang Shuang
Artificial zeolite was modified by nano-Fe 3 O 4 for development of functional adsorbents. Subsequently, adsorbents such as calcium cross-linked nano-Fe 3 O 4 microspheres (Ca-MS), calcium cross-linked nano-Fe 3 O 4 modified zeolite microspheres (Ca-MZS) and iron cross-linked nano-Fe 3 O 4 modified zeolite microspheres (Fe-MZS) were prepared and compared for their adsorption performance. The effects of adsorbent dosage, solution pH, initial concentration and ion content on the removal of Cu 2+ from wastewater are investigated, and the adsorption kinetics and isotherms for the adsorbent materials were analyzed. The experimental results indicate that for the initial concentration of Cu 2+ of 30 mg/L, the adsorption is noted to be most stable. The optimal initial pH for adsorbing Cu 2+ is observed to be 5.5. At an optimal dosage of Ca-MZS of 900 mg/L, the adsorption capacity is measured to be 28.25 mg/g, along with the removal rate of 72.49%. The addition of Na + and K + affects the adsorption of Cu 2+ . For the Na + and K + concentration of 0.2 mmol/L, the Cu 2+ removal rate by Ca-MZS drops to 11.94% and 22.12%, respectively. As compared with the adsorbents such as Natural Zeolite (NZ), Ca-MS and Fe-MZS, Ca-MZS demonstrates the best removal effect in solution, where the removal rate reaches 84.27%, with the maximum adsorption capacity of 28.09 mg/g. The Cu 2+ adsorption kinetics of Ca-MZS is observed to follow the Elovich kinetic model, with the adsorption isotherm data fitting the Freundlich isotherm model by using the non-linear method.
研究领域:
环境科学
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材料科学
✓ 已验证
DOI
高影响因子
Materials
·
2025
·Vol. 18
·期 7
·1443
·
IF 3.2
Yanshuang Chen,Yilin Chen,Hanqi Xu,Wenqi Zhao,Guodong Feng,Chunhui Xiao
The accumulation of coal gangue (CG), a byproduct of coal mining, poses severe environmental challenges. This study presents a green strategy to convert CG into high-value NaX zeolite via an alkali fusion–hydrothermal method. Through orthogonal experiments, the optimal synthesis conditions (solid–liquid ratio 1:8, crystallization temperature 110 °C, time 12 h) were identified, yielding NaX zeolite with exceptional crystallinity (98%), specific surface area (703.5 m2/g), and pore volume (0.28 cm3/g). Comprehensive characterization (XRD, SEM-EDS, BET, etc.) confirmed its structural integrity and thermal stability. The synthesized zeolite exhibited remarkable adsorption capacities for Cu2+(185.35 mg/g) and CO2(5.51 mmol/g), following the Langmuir isotherm model. This work not only addresses gangue disposal challenges but also demonstrates a cost-effective route for producing high-performance adsorbents, aligning with circular economy and carbon neutrality goals.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Polymer-Plastics Technology and Materials
·
2019
·
IF 0
Ying Pan,Hongting Zhao
In this study, flexible polyurethane foam (FPUF) was modified with bio-based coatings composed of polyethylenimine (PEI) and alginate (ALG), fabricated by layer-by-layer (LbL) self-assembly. LbL self-assembled coatings modified FPUFs were studied for their potentials for removing Cu2+ ions from aqueous solutions by using batch adsorption technique, as a function of assembled bilayers number, pH value, carrier amount and adsorption time. The maximum adsorption capacity of the modified FPUF was shown to be 54 mg/g for Cu2+. Results suggested that the LbL self-assembly could potentially be a promising cost-effective technique for fabricating advanced adsorbent materials for removing pollutants from wastewater.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
JOURNAL OF POLYMERS AND THE ENVIRONMENT
·
2022
·Vol. 30
·期 11
·4863-4876
·
IF 4.705
Fan Yajun,Shen Dianling,Yan Yu,Hu Xiaopeng,Guo Yaping,Zhong Yujun,Li Zhiyang,Xie Lianwu
To achieve efficient adsorption and recycling of Cu 2+ in wastewater, using Cu 2+ as template ion, glutaraldehyde as crosslinker, three sodium alginate hydrogel beads including SA, SAC, and SAB beads were prepared by imprinting sol–gel method using sodium alginate (SA) with carboxymethyl cellulose (CMC) and β -cyclodextrin ( β -CD) as different precursors, respectively. Scanning electron microscopy and Fourier transform infrared spectroscopy were used to characterize and analyze morphology and composition change of the hydrogel beads, respectively. When the mass ratio of SA to CMC or SA to β -CD reach 1:1, the SAC beads or SAB beads are nearly homogeneous sphere. Then the effects of pH, adsorption time, initial concentration of Cu 2+ , adsorbent dosage, and coexisting ions on the adsorption efficiency of three hydrogel beads were investigated. The results indicated that adding carboxymethyl cellulose and β -cyclodextrin into skeleton of beads increased the toughness of the beads and improved the adsorption capacity of Cu 2+ . Compared to the saturated adsorption capacity 510 mg/g of Cu 2+ on SA, the saturated adsorption capacity of Cu 2+ on SAB and SAC reached 817 mg/g and 822 mg/g, respectively. And their adsorption efficiency for Cu 2+ are over 95% at 25 °C with pH of 7, contact time within 350 min, adsorbent dosage of 4 mg/50 mL, and initial concentration of 5 mg/L. Thus, SAC and SAB beads could be used as adsorption material for detecting and removing Cu 2+ from wastewater.
研究领域:
环境科学
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材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF NANOPARTICLE RESEARCH
·
2024
·Vol. 26
·期 5
·1-13
·
IF 2.1
Sun Guohao,Hu Peixin,Lu Hechao,He Qinting,Ren Fang,Wu Juan,Jiang Wei
This study focuses on the synthesis and characterization of recyclable nano-adsorbents of magnetic nanocomposites (Fe 3 O 4 @ZnO-RGO). The Fe 3 O 4 nanoparticles were used as magnetic responders, ZnO coated on the surface of Fe 3 O 4 not only captured Cu 2+ but also prevented the oxidation of Fe 3 O 4 , and reduced graphene oxide (RGO) acted as Fe 3 O 4 @ZnO carrying platform could effectively adsorb Cu 2+ . The physical and chemical performance characterization suggested that the nano-adsorbents had stable structure, good hydrophilicity, and magnetic properties. Furthermore, the research results on adsorption performance indicated that the Fe 3 O 4 @ZnO-RGO had high adsorption properties for Cu 2+ , and the adsorption rate could reach more than 98%. The adsorption process conformed to the Langmuir model and second-order adsorption kinetics, and the adsorption of Cu 2+ was mainly chemisorption, accompanied by physical adsorption. In addition, because of the special magnetic response performance, Fe 3 O 4 @ZnO-RGO could be quickly separated from the solutions for cyclic adsorption so as to avoid secondary pollution. This provided a valuable idea for the effective development of clean and efficient Cu 2+ adsorbents, and the Fe 3 O 4 @ZnO-RGO had great application potential in the field of Cu 2+ wastewater treatment.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
Polymer Chemistry
·
2020
·Vol. 11
·期 41
·6688-6700
·
IF 5.342
Na Li,Xiaosai Qu,Lifeng Wang,Qingquan Tian,Yu Chen,Xianping Yao,Shusen Chen,Shaohua Jin
Aiming at solving the uncontrollability in the properties of chitosan caused by its uncontrollable structure, we synthesized two chitosan-mimetic polymers, the homopolymer mimic PHNI and the copolymer mimic PHNI-PHNIA, by ring-opening metathesis polymerization (ROMP) and characterized their structures and performances by FTIR, 1H-NMR, 13C-NMR, XRD and DTG. The reaction feature of ROMP demonstrated by size exclusion chromatography (SEC) signifies that the structure and number average molecular weight of ROMP products can be controlled by tuning the ratio of the monomer to the catalyst, and thus the mimics exhibit structure-controllable and mimicking properties. The relationship between the chemical structure and performance of the mimics is more explicit. The application exploration suggests that the Cu2+ adsorption performance of the PHNI-PHNIA hydrogel prepared with glutaraldehyde as the crosslinking agent is superior to that of the chitosan hydrogel. The catalytic activity of the PHNI-PHNIA-Cu2+ complex for the decomposition of H2O2 is much higher than that of the chitosan-Cu2+ complex. Our work has provided a new strategy for the synthesis of controllable chitosan mimics that can function as a substitute of basic polysaccharides for preparing the derivatives with controllable properties and expand the application scope of chitosan.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Materials
·
2020
·Vol. 13
·期 21
·5047
·
IF 3.057
Jun Cao,Peng Wang,Jie Shen,Qi Sun
Here, using Fe3O4@SiO2as a precursor, a novel core-shell structure magnetic Cu2+adsorbent (Fe3O4@zeolite NaA) was successfully prepared. Several methods, namely X-ray diffraction (XRD), Fourier transform infrared spectrometer (FTIR), Transmission electron microscope (TEM), Brunauer Emmett Teller (BET) and vibrating sample magnetometry (VSM) were used to characterize the adsorbent. A batch experiment was conducted to study the Cu2+adsorption capacity of Fe3O4@zeolite NaA at different pH values, contact time, initial Cu2+concentration and adsorbent does. It is found that the saturated adsorption capacity of Fe3O4@zeolite NaA on Cu2+is 86.54 mg/g. The adsorption isotherm analysis shows that the adsorption process of Fe3O4@zeolite NaA to Cu2+is more consistent with the Langmuir model, suggesting that it is a monolayer adsorption. Adsorption kinetics study found that the adsorption process of Fe3O4@zeolite NaA to Cu2+follows the pseudo-second kinetics model, which means that the combination of Fe3O4@zeolite NaA and Cu2+is the chemical chelating reaction. Thermodynamic analysis shows that the adsorption process of Fe3O4@zeolite NaA to Cu2+is endothermic, with increasing entropy and spontaneous in nature. The above results show that Fe3O4@zeolite NaA is a promising Cu2+adsorbent.
研究领域:
环境科学
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材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
ACS Applied Nano Materials
·
2022
·
IF 6.14
Zhoumei Xu,Fukai Chu,Xiaoyu Luo,Xin Jiang,Liang Cheng,Lei Song,Yanbei Hou,Weizhao Hu
In order to separate heavy-metal ions from contaminated wastewater and further realize the reutilization of waste adsorbent, magnetic composites with flowerlike structure were successfully synthesized. After the absorption of Cu2+ ions, hybrids can be used as effective coatings to enhance the fire safety of flexible polyurethane foam (FPUF) through a dip-coating method. As-fabricated metal–organic framework (MOF)-based composites exhibited a core–shell and flowerlike structure with high thermal stability. The maximum adsorption capacity for Cu2+ could reach 292.13 mg·g–1, calculated from the Langmuir isotherm model. In order to reutilize the adsorbed Cu2+ ions, the CuO-loaded MOF-derived Fe3O4@ZnO@CuO (MO) was obtained with a simple heat treatment. The effectivity of MO as a fire-safety coating for inhibiting the release of heat and toxic gases of FPUF was satisfactory. The application of this MOF-based composite will provide useful insights into the design of bifunctional materials for efficient wastewater remediation and fire-safety coatings.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2015
·Vol. 6
·期 4
·2678-2686
·
IF 3.84
Chunzhen Fan,Kan Li,Yalin Wang,Xufang Qian,Jinping Jia
Magnetic chitosan beads (MCBs) synthesized through a common embedding method and crosslinked with glutaraldehyde were studied for the adsorption of Cu2+ in aqueous solution. MCBs were investigated by means of hysteresis curves, thermo-magnetization curves, TGA, FTIR and XRD. Kinetic, isothermal and thermodynamic studies were applied to investigate the adsorption of Cu2+ by the MCBs. The effects of the pH value and the coexisting ions on the adsorption of Cu2+ were explored. Subsequently, the stability of the MCBs including the adsorption capacity (Qe) and the saturated magnetization (Ms) stability was investigated under various conditions. Simultaneously, FTIR and XRD were utilized to further analyze the change in the MCBs in the stability studies. The results suggested that the MCBs showed good stability without a significant loss in Qe and Ms after regeneration from five sequential cycles. The MCBs presented excellent storage stability while stored in a drying vessel for ten months. For thermal stability, the Qe and Ms of the MCBs presented similar variations after being heated in the atmosphere and in a vacuum at different temperatures for 30 h. The Qe changed slightly after being heated at 50 and 100 °C, and decreased sharply at 150 and 200 °C. The magnetization was stable in the lower temperature range (50–150 °C) and increased slightly at 200 °C. Different magnetic fields had little effect on the stability of the MCBs.
研究领域:
环境科学
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材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Coatings
·
2025
·Vol. 15
·期 5
·557
·
IF 2.8
Yuhang Shu,Guangyu Zhang,Zhipeng Liao,Yao Liang,Qidong Wang,Yu Ren,Zhaohang Yang
Heavy metal ion contamination in aquatic systems presents substantial environmental and public health challenges, demanding innovative remediation solutions. This study reports the synthesis of phosphorylated cellulose (PC) monoliths via thermally induced phase separation (TIPS) as a sustainable solution for heavy metal removal. Through systematic optimization of phosphorylation degree (ranging from 16.3% to 49.5%) and pore architecture, we developed materials with exceptional adsorption capacity and flow characteristics. Comprehensive characterization (SEM, FTIR, and elemental analysis) confirmed the successful incorporation of the phosphate group while revealing tunable three-dimensional porous structures controlled by cellulose acetate concentration (80–120 mg mL−1) and phosphorylation parameters. Optimal Cu2+adsorption occurs at 43.9% phosphorylation, coupled with stable permeability, under continuous flow conditions. The monolith effectively removes heavy metal ions (e.g., Cu2+, Ni2+, Cd2+) across a wide pH range, driven by electrostatic and hard-soft acid-base interactions. Additionally, the material maintains an absorption capacity of over 90% after multiple regeneration cycles. These findings highlight the potential of PC monoliths as cost-effective, scalable, and environmentally friendly adsorbents for heavy metal ion removal in water treatment applications.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
·
2021
·Vol. 98
·期 2
·310-318
·
IF 2.326
Sun Yangyi,Mao Yijing,Zhang Chengyu,Di Ningyu,Qi Dongming,Shentu Baoqing
In this work, organic–inorganic hybrid hollow mesoporous silica spheres (HMSs) have been synthesized by a core-template-free microemulsion method, and the thermodynamic and kinetic of the adsorption process of Cu 2+ on the HMSs are detailly investigated. Thermodynamic results showed that the adsorption process obeyed the Langmuir model with a maximum adsorption capacity of 52.0 mg/g. Kinetic studies fitted well with the pseudo-second-order model, and the intraparticle diffusion model showed that the interparticle diffusion is not the sole adsorption rate-limiting step, the adsorption process was jointly controlled by both the external surface attraction interaction and interparticle diffusion interaction between the HMSs and Cu 2+ . The adsorption capacity of different HMSs is highly depended on the surface charge and their BET surface area. These experimental results provide some theoretical guidance for the metal ions adsorption on the HMSs.
Organic–inorganic hybrid hollow mesoporous silica spheres are synthesized by a core-template-free microemulsion method, and thermodynamic and kinetic of the adsorption process of Cu 2+ are detailly investigated.
研究领域:
材料科学
·
环境科学
·
物理化学
✓ 已验证
产品关联
DOI
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2025
·
IF 7.8
Yingjun Gao,Yinyan Guan,Jiyan Liang,Lei Yu,Yumeng Ye,Shengnan Chen,Jiayu Lv,Dehong Cheng
To address the demands for heavy metal wastewater treatment and copper resource recycling, hybrid capacitive deionization (HCDI) technology offers advantages of low energy consumption and ion selectivity. However, the practical application of HCDI is limited by the insufficient adsorption performance and stability of electrode materials. In this study, flower-like copper sulfide (CuS) was synthesized via a hydrothermal method and used as CDI electrodes, with polyvinylidene fluoride (PVDF) and polyvinyl butyral/polyvinylpyrrolidone (PVB/PVP) as binders. The effects of the two binders on electrode structure and performance were investigated, focusing on elucidating the selective adsorption mechanism of CuS as an HCDI cathode. The CuS-PVDF electrodes exhibited superior conductivity and higher Cu 2+ adsorption capacity (551.49 mg·g −1 at 1.0 V), attributed to the polar stabilization effect of rigid molecular chains and low surface energy of PVDF, which facilitated efficient utilization of CuS active sites. In contrast, the PVB-PVP binder caused shielding of active sites on CuS, and delayed charge transport due to encapsulation by flexible polymer chains. Moreover, the CuS electrodes exhibited selective adsorption of Cu 2+ in the HCDI system. The selectivity of Cu 2+ exceeded 70 % in a mixture of multiple heavy metal ions. This selective mechanism can be attributed to pK sp (CuS) = 40.3 and redox-mediated phase transformation (CuS→Cu 2 S/Cu 2 O/Cu).
研究领域:
环境工程
·
材料科学
·
电化学
·
水处理技术
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）