Polymers
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2023
·Vol. 15
·期 2
·459
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IF 5
Yunlong Le,Yunshan Guan,Xiaoying Ma,Weidong Zhang
Boron removal from aqueous solutions has attracted increasing attention, offering benefits for animal and plant health as well as profound significance for exploiting Salt Lake boron resources. In this work, we synthesized novel glycidol-functionalized and hydrophilic polyaniline (PANI) nanorod adsorbents, which were prepared to separate boron compounds from boric acid aqueous solutions. The as-prepared adsorbents were significantly different from the traditional polymers’ grafting reaction because they had a higher functional yield and more active position for adsorption. The maximum adsorption capacity (0.2210 mmoL∙g−1) and optimal adsorption conditions (boric acid concentration of 1307 mg/L, pH = 9.82, time of 10 h) were obtained with single-factor experimentation and the response surface method (RSM). In addition, adsorption kinetics studies showed that the adsorption reaction belonged to the pseudo-first-order kinetic model, and diffusion was the key limiting factor; therefore, the adsorption equilibrium time is more than 10 h. Finally, the related possible adsorption mechanism was investigated based on the species and the diffusion of boron in the aqueous phase.Keywords:boron adsorption;adsorbents;polyaniline nanorods;glycidol
研究领域:
环境科学
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材料科学
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DOI
PubMed
高影响因子
DESALINATION
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2025
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IF 9.8
Yifan Shao,Chao Hu,Ruirui Liu,Bingxin Liu,Yongquan Zhou,Jianming Pan
The design of adsorbents with high recognition activity, high site density and high mass transfer efficiency is the significant to the removal of specific non-metallic ions from Salt Lake brines. Here we report the fabrication of ZIF-67-derived hollow Co 3 S 4 nanoadsorbent for the adsorption and separation of boron (B) in complex water from concentrated salt solutions. The adsorption experiments displayed that the B adsorption capacity of the hollow Co 3 S 4 material exhibited substantial B adsorption capacity, reaching 283.3 mg·g −1 , which represents an impressive 7.3-fold improvement over ZIF-67. On these grounds, a series of kinetic and thermodynamic studies were conducted, and the results revealed that the adsorption process is more consistent with the spontaneous exothermic reaction of the Langmuir adsorption isothermal model (R 2 = 0.999). The results of the charge density and density of states depicted that Co atoms strongly interact before and after adsorption, and that Co atoms are tend to react spontaneously with H 3 BO 3 , which serves as the primary adsorption site. The interaction including electrostatic and hydrogen bonds jointly realizes in B adsorption performance with high selectivity and excellent cycle stability. This study highlighted the high adsorption performance of the hollow Co 3 S 4 for boron in real water of the Salt Lake brine and provided a new idea for the design of other ZIFs derived hollow nanoadsorbent for practical applications.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
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DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
·
IF 8.2
Tongtong Pan,Xiangmei Cui
A composite aerogel with good mechanical properties and adjustable physical properties was synthesized by a sol-gel technique on the base of gelatin for the boron adsorption from water solution. The adsorption key variables, for instance, initial boron concentration (C 0 ) (900–1100 mg/L), the contact time (t) (8–9 h), and pH (9–11), were optimized using central composite design to obtain improved boron adsorption performance of epichlorohydrin-modified gelatin (EMG)/ N -methyl- d -glutamine (NMDG) aerogel loaded with hydroxylated carbon nanotubes (EMG@NMDG). The adsorption followed the pseudo-second-order and Freundlich model. At pH of 10, C 0 of 1000 mg/L and t of 10 h, the largest adsorbed amount of EMG@NMDG was 85.79 mg/g. Regeneration experiments were carried out by eluting the adsorbent using HCl. The analysis showed that the adsorption in actual brine was 62.65 mg/g. Therefore, the developed EMG@NMDG aerogel has potential value for the boron extraction from brine and wastewater.
研究领域:
材料科学
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环境科学
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Ruihao Wang,Qian Li,Xiyan Sun,Xinyu Jia,Shuxian Li,Li Wei,Xitong Sun
In this work, a new biomass boron adsorbent of N -methyl-D-glucosamine embedded sodium alginate/polyethyleneimine/polysiloxane composite aerogel (SKPN) was reported. Relevant characterization proved that the aerogel exhibited 3D porous structure with plenty of hydroxyl and amino functional groups, which was beneficial to the diffusion of boron and the chelation between boron and SKPN. Various parameters affecting the adsorption performance including pH value, contact time initial concentration, temperature and reusability were investigated. The maximum adsorption capacity was found at pH 8.0, and the adsorption capacity reached equilibrium within 3.75–5.75 h. Adsorption kinetics were more in line with the pseudo-second order kinetic model, suggesting the predominance of chemisorption. The adsorption isotherm was more in line with the Langmuir model, and the maximum adsorption capacities were calculated up to 38.41–49.39 mg/g (3.55–4.57 mmol/g) within the temperature range of 298 to 318 K, which were higher than most of the previous works. In addition, SKPN still showed good resistance to external ion interference and good reusability. The adsorption mechanism proved that the chelation interactions between boron and cis-diol and amino groups were the main driving forces. These results instructed that the adsorbent exhibited a good application prospect for boron adsorption, with the advantages of high adsorption performance, simple preparation process and environmental friendliness.
研究领域:
环境科学
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材料科学
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DOI
PubMed
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2020
·Vol. 27
·期 22
·28396-28407
·
IF 3.056
Hu Guangzhuang,Zhang Wei,Chen Yuantao,Xu Cheng,Liu Rong,Han Zhen
With the development of the boron industry, boron pollution is getting more and more serious, and excessive boron will harm human health. In this paper, graphene oxide was used as a template to prepare ZIF-67, and GO/ZIF-67 was successfully prepared. GO/ZIF-67 was used for the first time to remove boron from water. SEM, XRD, and other characterization methods were used to confirm the structure. The adsorption kinetics, adsorption isotherm, adsorption thermodynamics, and adsorption mechanism of boron by GO/ZIF-67 were studied in this paper. The adsorption capacity of GO/ZIF-67 for boron is up to 66.65 mg·g −1 at 25 °C, and adsorption process reaches equilibrium in 400 min. Adsorption kinetics indicates that the adsorption process conforms to the pseudo-first-order kinetic model, and adsorption thermodynamics indicates that the adsorption process is a spontaneous endothermic process controlled by entropy change. The adsorption capacity of boron by GO/ZIF-67 does not decrease significantly after four cycles. The adsorption of boron by GO/ZIF-67 has both chemical and physical adsorption. From Zeta potential and adsorption kinetics, it can be seen that there is physical adsorption during the adsorption process and boron mainly has positive charge on the surface of GO/ZIF-67 and graphene oxide hydroxyl bonding. Based on the adsorption thermodynamics and XPS, it is known that there is chemisorption during the adsorption process, and mainly the combination of boron and cobalt sites.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2017
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IF 3.387
Zhe Wang,Zhongyu Wu,Yufeng Zhang,Jianqiang Meng
The development of efficient adsorbents with high sorption capacity remains as a challenge for the removal of micropollutants occurred globally in water resources. In this work, poly (amic acid) (PAA) electrospun nanofiber membranes grafted with hyperbranched polyols were synthesized and used for boron removal. The PAA nanofiber was reacted with hyperbranched polyethylenimine (HPEI) and further with glycidol to introduce the vicinal hydroxyl groups. The chemical composition and surface characteristics of the obtained PAA-g-PG membranes were evaluated by FESEM, FTIR, XPS and water contact angles (WCA) measurements. The boron adsorption thermodynamics and kinetics were investigated systematically. The results showed that the PAA nanofiber spun from concentration of 15% had uniform morphology and narrow diameter distribution. The PAA-g-PG nanofiber membrane had a maximum boron uptake of 5.68 mmol/g and could adsorb 0.82 mmol/g boron from a 5 mg/L solution in 15 min. Both the high surface area of nanofibers and the hyperbranched structure should contribute to the high boron uptake and high adsorption rate. The nanofiber membrane obeyed the Langmuir adsorption model and the pseudo-first-order kinetic model. The regeneration efficiency of the nanofiber membrane remained 93.9% after 10 cycled uses, indicating good regenerability of the membrane.
研究领域:
材料科学
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环境工程
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2022
·Vol. 23
·期 19
·11356
·
IF 6.208
Qinglong Luo,Xueying Wang,Mingzhe Dong,Xueli Huang,Zhijian Wu,Jun Li
The adsorption separation and extraction of low-concentration boron from salt-lake brine have great significance. Magnetic separation avoids the problem of adsorbent granulation and improves the usage efficiency. The silicon-based adsorbents have attracted interest due to their superior acid and alkali resistance, in which polyhydroxy graphene enhances the adsorption of boron ions. Herein different boron adsorbents, derived by magnetic separation, were developed and characterized by SEM, TEM, XPS, VSM, FT-IR, and XRD analysis. The adsorption-desorption performance of boron adsorbents with different compositions was evaluated. The isotherms and kinetics parameters of the boron extraction were evaluated based on adsorption-desorption tests. The graphene-based magnetic adsorbent (Go-Fe3O4@SiO2@mSiO2-Glu) registered a high boron adsorption capacity of 23.90 mg/g at pH = 9 in the boron solution and 24.84 mg/g for East Taigener salt-lake brine. The Na+, Mg2+, Ca2+, and Cl−ions have little interference with the boron adsorption. The adsorbents exhibit magnetic separation performance and good cycle life. The results showed that acid-alkali desorption solution has little effect on the adsorbents, and the composite of graphene enhances the adsorption of boron ions. The adsorbents developed in this study are promising to recover boron from low-concentration boron-containing salt-lake brines.Keywords:adsorption;boron adsorbents;magnetic separation;SiO2;graphene;salt-lake brines
研究领域:
化学工程
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Yubo Li,Ting Wang,Xuan Liu,Lulu Luo,Murong Wang,Weidong Zhang,Dahuan Liu
Recent research efforts have increasingly focused on the synthesis of high-efficiency boron adsorbents, particularly bulk MOFs-based materials rather than powders adsorbents. Herien, a novel GO/UiO-66 aerogel bulk adsorbent was successfully prepared using a facile solvothermal method combined with ascorbic acid thermal reduction. This adsorbent demonstrates effective boron removal from aqueous solutions at 0.08 M boron solution and addresses the challenge of recovering MOFs powders. Consequently, at an initial pH of 10, the adsorption capacity of the GO/UiO-66–4 aerogel reached as high as 81.7 mg/g, and adsorption equilibrium was achieved within 120 min. The pseudo-second-order model effectively described the adsorption kinetics with a correlation coefficient (R 2 ) of 0.9997, suggesting that the adsorption process was chemisorption-dominated. Furthermore, both the Henry and Freundlich models accurately depicted the adsorption isotherm, indicating that the boron adsorption by UiO-66 was a spontaneous endothermic reaction. In addition, the critical limiting factors influencing the adsorption capacity of the adsorbent were investigated. The findings indicated that the active sites on the UiO-66 surface were the predominant factor determining its adsorption capacity. Importantly, this work offers significant insights into the development of bulk MOFs-based adsorbents, as the adsorbent exhibits high boron selectivity and maintains stability over 10 cycles.
研究领域:
材料科学
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环境工程
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产品关联
DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2025
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IF 3.7
Pengyu Sun,Feiyu Gao,Wei Shi,Hengyuan Zhang,Shiao Du,Wei Chen,Meng Li
Boron adsorbents with high adsorption capacities have long been a focus of research for a long time. This study used small molecular polyols with different hydroxyl groups as functional monomers and as end-capping agents, functional dendritic polyurethanes with nano structure were successfully prepared by one-pot method. The single molecule size and surface morphology were characterized by dynamic light scattering, transmission electron microscopy and scanning electron microscopy, and the molecular size in the dry state was 11 to 18 nm. The prepared materials were used as the boron adsorbents, and the effects of pH, time, boron solution concentration and temperature on the adsorption were studied. The results showed that the capacity of adsorbed boron could reach 110–130 mg·g –1 . Adsorption was a homogeneous monolayer adsorption controlled by chemisorption, and adsorption thermodynamics showed that was a spontaneous endothermic process. Adsorption behavior was best described by the pseudo-second-order kinetic model and the Langmuir isotherm. This study also showed that it was difficult for ortho/meta-hydroxyl groups to chelate with H 3 BO 3 and other polyborates, and the chelates mainly had good chelating properties with B(OH) 4 – , and the chelates formed had large steric hindrance. At the same time, increasing the number of hydroxyl groups of functional monomers was beneficial to increase the adsorption capacity of materials. In addition, the cyclic adsorption/desorption experiments showed that DPUs have good cyclic stability. At the same time, the adsorption results of the original salt lake brine showed that other metal ions in the brine had little effect on the adsorption of boron, and the adsorption capacity was as high as 52.93 mg·g –1 , and the maximum adsorption capacity was obtained by Adams–Bohart model to 58.80 mg·g –1 . The outstanding selectivity and adsorption capacity of these materials have broad potential application, and are expected to be used for the efficient adsorption and removal in boron-containing water bodies.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2021
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IF 3.498
Qinglong Luo,Yinqiu Wang,Liang Li,Xueli Huang,Zhongfu Cheng,Xueying Wang,Long He
Environmental boron removal and salt lake brine boron enrichment are important separation processes, which are of great significance to animal and plant health, environmental safety, and effective use of resources. Polymers are often used for boron separation due to their low cost and high performance. In this study, Tris(hydroxymethyl)methyl aminomethane (TRIS) and glucose functionalized polymer (P(GMA-co-TRIM)) were synthesized by hydrothermal method , and the polymer structure were characterized by FTIR, SEM, Mapping, XRD , XPS, PZC and TG-DSC-DTG. P(GMA-co-TRIM)-TRIS and P(GMA-co-TRIM)-Glu were used as boron adsorbents and the performance test were carried out. When the pH = 8 of boron solution, the two adsorbents have the best adsorption performance, with the adsorption capacity of 16.25 and 18.09 mg/g, respectively. The effects of initial concentration and contact time on boron adsorption were studied. Langmuir adsorption isothermal model and pseudo-second-order model were more consistent with the adsorption data, and the adsorption process was chemical adsorption . The two adsorbents have strong resistance to ion interference and cycle life, and have potential application value in environmental boron removal and boron extraction from salt lake.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2020
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IF 3.333
Qinglong Luo,Meiting Zeng,Xueying Wang,He Huang,Xuefeng Wang,Na Liu,Xueli Huang
This study describes two boron sorbents : P(GMA-co-TRIM)-EN-PG and P(GMA-co-TRIM)-TETA-PG. These absorbents were prepared by grafting glycidol onto P(GMA-co-TRIM) with different amounts of amino and imino groups . The structure was characterized using FT-IR, SEM and the water contact angle (WCA). The two adsorbents contain a large number of hydroxyl groups and are defined as nanomaterials . The adsorption of boron by the two adsorbents was investigated by determining the effects of pH, the initial boron concentration, adsorption time, ion competition and cycle life. Isothermal adsorption data were combined with the Langmuir adsorption isotherm model, and the adsorption kinetics were well fitted to the second-order kinetic model . The adsorption equilibrium was achieved within 60 min, and the maximum amounts of boron adsorbed were 29.22 mg/g and 23.25 mg/g, respectively. The presence of Na + , Mg 2+ , Ca 2+ , K + , Cl − , SO 4 2− and NO 3 − ions had little effect on boron adsorption. After five consecutive adsorption-desorption cycles, the two adsorbents showed good reuse performance. These two promising adsorbents are useful for removing boron from aqueous solutions.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
DESALINATION
·
2025
·
IF 9.8
Huiqun Ju,Xue Jiang,Chengyu Huangfu,Jiafei Lyu,Xianghai Guo
Metal-organic framework (MOF) materials exhibit excellent boron adsorption and isotope separation abilities, but their mechanisms are still unclear and require additional research. In this study, MIL-100(Fe), which has excellent comprehensive performance in boron adsorption and isotope separation among MOF materials, was selected to systematically investigate its boron adsorption and isotope separation performance. Based on this material, five MIL-100 (Fe 3+ , X 2+ ) bimetallic materials were prepared by doping different divalent metal ions, and the changes in the adsorption and separation capacities before and after doping were compared. The influence of different metal doping on adsorption was investigated. It was found that doping metal ions effectively increased the coordination of unsaturated metal sites in the materials, which improved the adsorption process and caused positive and effective isotopic separation. The isotopic separation factor of doping the alkali earth metal ion Ca 2+ was increased significantly from 1.033 to 1.092.
研究领域:
材料科学
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环境科学
✓ 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）