NEW JOURNAL OF CHEMISTRY
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2024
·Vol. 48
·期 42
·18166-18176
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IF 2.7
Jing Xiao,Linshan Peng,Ailan Ouyang,Xin Mo,Yiping Yao,Chunyan Wang,Chunpei Yan
A phosphonate-functionalized Zr@FMA material was prepared in this work as an adsorbent for the efficient recovery and enrichment of Th(IV) from aqueous solutions. The adsorbent, prepared by functionalizing Zr@FMA with alendronate sodium (ALS), a well-known active bisphosphonate, demonstrates good water stability and a large surface area, making it suitable for the separation and enrichment of Th(IV) in aqueous solutions. A comparison of the adsorption behavior of Th(IV) on Zr@FMA-ALS with the unfunctionalized Zr@FMA reveals that the introduction of phosphonate groups significantly enhances the maximum adsorption capacity and rate of Zr@FMA-ALS. The adsorption data aligns well with the Langmuir isotherm model, suggesting a uniform distribution of Th(IV) on the adsorbent surface in a monolayer coverage. Thermodynamic analysis indicates an endothermic and spontaneous adsorption process. Zr@FMA-ALS also shows excellent selectivity for Th(IV) over other metal ions in mixed solutions. Insights into the adsorption mechanism are provided through SEM, XPS, and FT-IR analyses, indicating that ALS molecules play a crucial role in capturing Th(IV) on the surface of Zr@FMA-ALS.
研究领域:
化学工程
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材料科学
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环境科学
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产品关联
DOI
高影响因子
ACS Omega
·
2022
·
IF 4.132
Moaz M. Abdou,Paul M. O’Neill,Eric Amigues,Magdalini Matziari
A novel TEA-catalyzed sugar-esterification of phosphinic acids was used as a general and efficient approach for the synthesis of a variety of phosphinates without any transition metal. The high efficiency of the current methodology and a convenient experimental procedure compensate for the moderate yields obtained. Another advantage is that the reaction tolerates different substituents attached to the phosphinic acids and the sugar moieties alongside the ease of isolation of the product.
研究领域:
有机化学
·
合成化学
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Hongtao Liu,Jiawei Wen,Lei Cao,Junlian Wang,Xin Wang,Guoyong Huang,Shengming Xu
Conventional phosphonic acid extractants such as bis (2-ethylhexyl) phosphate (P204) have only been used for cobalt extraction and perform poor separation efficiency. In this work, we propose a route to synergistically extract and separate Co, Mo, and V from spent hydrogenation catalysts by utilizing the modulating effect of ethanolamine (MEA) on phosphonic acid-based extractants, which eliminates the need for saponification and acidification of the extractants. The extraction mechanism of V, Co and Mo have been explained detailedly. By performing quantum chemical calculations on the surface properties of various amines, their metal extraction effects were predicted and validated using machine learning, laying the foundation for the design of synergistic extractants. The Co/Mo/V selective separation process was finally built with the aim of extracting cobalt first in the form of Co(RNH 2 ) 2 A 2 . At a P204 concentration of 25 %, MEA addition of 5 %, stirring time of 10 min, stirring rate of 400 rpm, the combined recoveries of the three metals Co, V and Mo reached 94.56 %, 85.60 % and 88.81 %, the separation factors β Co/Mo and β Co/V could be increased up to 44748.77 and 1174.04, respectively. It was also demonstrated that the extractant was also suitable for the selective extraction of Ni 2+ . This work provided fundamental research for the development of high-performance extraction systems.
研究领域:
化学工程
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材料科学
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DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2019
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IF 4.084
Jiajia Wang,Yuanyuan Liu,Zeyan Wang,Peng Wang,Zhaoke Zheng,Xiaoyan Qin,Xiaoyang Zhang,Ying Dai,Baibiao Huang
Enhancing the photocatalytic activity of NiO towards hydrogen generation (6 times) is achieved by phenyl phosphoric acid (PPA) surface modification. The photocatalytic activity can be further improved by changing PPA to 4-aminophenyl phosphonic acid (PPA-NH 2 ), about 10 times, suggesting the functional group plays an important role in improving the activity. A chemical bond (Ni O P) between NiO and organic phosphoric acid was proved by FT-IR spectra. XPS and LSV analysis suggested organic phosphonic acid modification increased the electron density of Ni, which promoted the transformation from Ni 2+ to Ni 0 . Mott-Schottky (M − S) measurement revealed that PPA-NH 2 modified NiO processed a larger the space charge layer thickness (d sc ), which enhanced ability towards H 2 evolution from dynamical aspect.
研究领域:
材料科学
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能源化学
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DOI
高影响因子
Journal of Physical Chemistry C
·
2023
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IF 3.7
Hao Wu,Xiaoyu Cheng,Songjun Xie,Yan Huang,Raheel Ahmed Janjua,Xinzi Liu,Sailing He
Aluminum quantum dots (AlQDs) are an emerging class of optical material due to their unique photoluminescence in the ultraviolet waveband. Herein, a strategy is presented to control their photoluminescence emission. The synthesized AlQDs displayed photoluminescence from the UV-B region (<320 nm) to the near-ultraviolet region (∼425 nm) and high quantum yields. Our investigation revealed that surfactants and phosphonic acids (PAs) were competitively bound to the surface of AlQDs, and this was affected by the space volume of surfactants and charge of head groups. The steady-state and time-resolved spectroscopic data suggested the emission properties of AlQDs mainly originated from the surface-mediated states. The red-shifting of emission peak was a result of increased amount of PAs on the surface of AlQDs, which could be related to the surface oxygen presented in both ligands and surfactants. Overall, this study indicates a method to control the photoluminescence of AlQDs by changing the surfactants and surface ligands, which is fundamental to their applications in photonics and applications to energy and environment, in addition to biomedicine.
研究领域:
材料科学
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光学
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能源与环境科学
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生物医学
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产品关联
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
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2012
·Vol. 296
·期 3
·1331-1340
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IF 1.52
Chi Fangting,Wang Xiaolin,Xiong Jie,Hu Sheng
PVA functionalized with vinylphosphonic acid was prepared as a new adsorbent for uranyl (VI) adsorption from aqueous solutions. The vinylphosphonic acid was cografted onto PVA fibers by preirradiation grafting technique. The adsorbent were characterized by Fourier transform infrared spectroscopy and scanning electron microscopy. The adsorbent was observed to possess a fibrous structure and was bonded with phosphonic acid groups successfully. The adsorbent was used for the adsorption of low levels uranyl (VI) ions from aqueous solutions. The influence of analytical parameters including pH, adsorption time, amount of adsorbent, metal ion concentration, and temperature were investigated on the recovery of uranyl (VI) ion in aqueous solution. The maximum adsorption capacity (32.1 mg g −1 ) and fast equilibrium time (30 min) were achieved at pH of 4.5 at room temperature. Thermodynamic parameters (Δ H ° = 2.695 kJ mol −1 ; Δ S ° = 31.15 J mol −1 K −1 ; Δ G ° = −6.748 kJ mol −1 ) show the adsorption of an exothermic process and spontaneous nature, respectively. The possible coordination mechanism was illustrated. Adsorption and desorption coexist in aqueous solutions and then the system becomes equilibrium.
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
MATERIALS CHEMISTRY AND PHYSICS
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2013
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IF 2.072
Cheng Chen,Chunhui Shen,Gengjin Kong,Shanjun Gao
High temperature anhydrous proton exchange membranes based on phosphonic acid were prepared from epoxycyclohexylethyltrimethoxysilane (EHTMS) and amino trimethylene phosphonic acid (ATMP) by sol–gel process. The structures and properties of membranes with different phosphonic acid content were extensively characterized by FTIR, TG-DSC and XRD . Their proton conductivity under dry condition was also investigated under different temperature. The results show that the proton conductivity of the prepared membranes strongly depends on temperature, and the proton conductivity ranges from 8.81 × 10 −5 S cm −1 at 20 °C to 4.65 × 10 −2 S cm −1 at 140 °C under anhydrous condition. It indicates that the increasing temperature is favorable for congregating of the grafted–PO 3 H 2 and increasing of the proton mobility. In addition, from the results of AFM images, it was confirmed that the continuous distribution of phosphonic acid groups is favorable for the formation of the proton transport channel, which can significantly enhance the proton conductivity of the membranes.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Dingzhong Yuan,Tengteng He,Xuan Guo,Jing Huang,Yan He,Yun Wang,Yan Liu,Xiaohong Zhao,Zhirong Liu,Qinghua Zhang
Thorium has received widespread attention as potential nuclear fuel alternative for the next-generation thorium-based molten salt reactors. With the growth of nuclear energy, it is needful to exploit magnetic nanomaterials to remove thorium from aqueous solutions, owing to their superparamagnetism and large specific surface energy. Nevertheless, most of magnetic nanomaterials often suffered from low thorium selectivity and poor structural ability in acidic solutions. Herein, a novel core–shell magnetic nanocomposite Fe 3 O 4 @SiO 2 /P (AA-MMA-VPA) possessing phosphonic acid was developed by a controlled radical polymerization of vinylphosphonic acid (VPA) in the presence of Fe 3 O 4 encapsulated by SiO 2 (Fe 3 O 4 @SiO 2 ). Due to the presence of the high content of phosphonic acid groups and the absence of any universal groups, Fe 3 O 4 @SiO 2 /P (AA-MMA-VPA) displayed exceptional selectivity for thorium in the presence of 11 co-existing cations. The separation factor S Th/M value for Fe 3 O 4 @SiO 2 /P(AA-MMA-VPA) concerning all other competing cations surpassed 74.4, and the largest value for S Th/M even amounted to 343.5. Further, Fe 3 O 4 @SiO 2 /P (AA-MMA-VPA) possessed a maximum adsorption capacity ( q max ) of 485.4 mg g −1 at pH of 3.0, higher than that of other magnetic sorbents. By reason of its core–shell structure, the sorbent possessed an outstanding structure stability even after immersed into HNO 3 solution at pH of 0.5 for 72 h. The sorbent could as well be magnetically recouped, and recycled at least six times without evident diminution in sorption amount. The sterling removal performance of the sorbent was assigned to the interaction of thorium with phosphonic acid, corroborated by FT-IR, XPS and DFT method. Thus, this study affords a new viewpoint for exploiting magnetic nanomaterials with sterling acidic resistance for the strongly selective entrapment of thorium from acidic media.
研究领域:
化学
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材料科学
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环境科学
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产品关联
DOI
高影响因子
ACS Applied Bio Materials
·
2020
·
IF 0
Xunyuan Jiang,Yitong Yao,Weiming Tang,Dongmei Han,Li Zhang,Ke Zhao,Shuanjin Wang,Yuezhong Meng
Metal-based implants possess excellent mechanical strength, corrosion resistance, and biocompatibility and can deliver favorable performances in clinic treatments. However, modulus mismatching is considered a common defect for metal-based materials, while polymer-based materials with a bonelike elastic modulus have been regarded as one of the most promising candidates for bone replacement implants. In this work, a phosphonic acid- and fluorine-containing poly(aryl ether) (PAE) resin is designed and synthesized, which is determined to be an amorphous polymer with excellent thermostability. The elastic modulus of composites is improved to 15.7 GPa by reinforcing with 60 wt % hydroxyapatite (HA), which demonstrates admirable protein adsorption and hydrophilicity. After 14 days of immersion in simulated body fluid, a layer of HA deposition can be observed, indicating favorable bioactivity in advance, and the preliminary in vitro cell experiments also suggest that PAE-HA composites possess favorable cell responses on adhesion, proliferation, and differentiation, which reveal the feasibility of synthesized polymers to be employed as bone replacement materials, while the adjustability in molecular chains also leaves room for further investigations.
研究领域:
材料科学
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生物医学工程
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产品关联
DOI
PubMed
MACROMOLECULAR RESEARCH
·
2021
·Vol. 29
·期 3
·199-210
·
IF 2.227
Wu Zhihui,Shen Chunhui,Gao Shanjun,Zhu Xi,Zhang Mingliang,Ding Ao
A series of proton exchange membranes were prepared by incorporating phosphonic functionalized siloxane into sulfonic poly(2,6-dimethyl-1,4-phenyleneoxide) (SPPO) and imidazole functionalized poly(2,6-dimethyl-1,4-phenyleneoxide) grafted with siloxane (IPPO-Si). Phosphonic acid functionalized siloxane was synthesized from amino trimethyl phosphonic acid (ATMP) and (3-aminopropyl)triethoxysilane (APTES). FTIR results showed that 1-methylimidazole and APTES were successfully grafted onto polyphenylene oxide, and APTES successfully formed Si-O-Si crosslinked networks through hydrolytic crosslinking. The membranes were thermally stable up to 220 °C and exhibited excellent oxidative stability and mechanical performance. We also measured the proton conductivity of the membranes. The results showed that the proton conductivities of the composite membranes increased with the increasing of SPPO content at different degrees under high (100 °C–160 °C) and low (25 °C–80 °C) temperature conditions. Furthermore, the IPPO-SI-P/SPPO-30 has the best conductivity, reaching to 0.1131 S cm −1 at 80 °C, 100%RH and 0.1049 S cm −1 at 160 °C, 5%RH, respectively. Therefore, this novel membrane acts as a potential candidate for proton exchange membranes with a wider applicable temperature (25 °C–160 °C).
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
COLLOID AND POLYMER SCIENCE
·
2015
·Vol. 294
·期 1
·189-198
·
IF 1.865
Ran Qianping,Ma Jianfeng,Wang Tao,Zhao Hongxia,Song Fengyan,Fan Shimin,Yang Yong,Lyu Zhifeng,Liu Jiaping
A series of bis(phosphonic acid)amino-polymers were synthesized in one pot by the Moedrizer-Irani procedure with excellent yields from the single amino-terminated or the double amino-terminated polyethers. The chemical structure and molecular weight of desired products were determined by 1 H, 31 P nuclear magnetic resonance (NMR) and gel permeation chromatography respectively. The experimental results indicated that the single bis(phosphonic acid)amino-terminated polymers not only exhibited good water-reducing properties but also demonstrated effective anti-clay abilities when mixed with polycarboxylate superplasticizers (PCEs). The double amino-terminated polymers showed good fluidity maintaining abilities within 1–3 h. It should be noted that the dispersion properties of the bis(phosphonic acid)amino-polymers were influenced by their molecular weights and structures. What is more, the results of adsorption experiments and theoretical calculations showed that the adsorption ability of bidentate phosphoric acid with calcium ions was much stronger than that of carboxyl group in PCEs.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2018
·
IF 6.578
Liang Shen,Fangqian Wang,Lian Tian,Xuan Zhang,Chun Ding,Yan Wang
Forward osmosis (FO), a novel promising technology for water treatment, has not progressed significantly beyond the conceptualization. A bottleneck is the lack of suitable membranes with high separation performance, good antifouling properties and chemical stability. In this work, a 3-step surface modification approach is employed to develop a thin-film composite polyamide (TFC PA) membrane, i.e., PEI grafting, acid functionalization (organic phosphonic acid or carboxylic acid), and the calcium mineralization. Effects of the organic acid type on membrane properties are investigated with various characterizations, in terms of chemical changes, surface properties, and morphology. The separation performance, antifouling properties and chemical stability of modified membranes are studied systematically. In comparison with the control membrane and those modified by organic carboxylic acids, membranes modified by organic phosphonic acids exhibit the higher FO water flux, lower reverse salt flux, lower fouling propensity, a better pH tolerance, as well as a superior chlorine resistance. The surface functionalized TFC membrane developed in this work therefore holds a great potential for wide membrane-based separation applications in various harsh environments.
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
危险品化学品经营许可证（带存储）