INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Hua Zhang,Zhao-Yuan Feng,Zhen-Zhou Li,Yi-Sen Wang,Zhe-Xuan Mu,Xiao-Hong Lv,Zhen-Yu Wang,Zi-Luan Fan
In this study, a polysaccharide component was extracted from Pinus pumila using biomimetic-microwave assisted alkali tandem extraction and then purified by DEAE-52 and Sephadex G-200. A new purified polysaccharide (PSP c-a) was determined through in vitro tracking. The structural features were characterized using a HPGP, FTIR, IC and NMR spectroscopy. The analysis showed that there may be →3, 6)-α-Galp (1 → 3, 4)-α-Glcp (1 → 5)-α-Manp (1→ in the backbone of PSP c-a, →3, 4)-α-Glcp (1→ and →3, 4)-α-Glcp (1 → α-Arap (1→ in the branch of PSP c-a. To improve the effects of PSP c-a on osteoblast MC3T3-E1, PSP c-a was biologically and chemically modified by α-glucosidase together with Sr. Finally, a new thermostable complex Sr-PSP c-a-1 was synthesized. The effects of PSP c-a and Sr-PSP c-a-1 on osteoblasts MC3T3-E1 were compared. It was found that both were found to have a positive effect on MC3T3-E1, and Sr-PSP c-a-1 was more effective than PSP c-a. Therefore, Sr-PSP c-a-1 should be a potential candidate for promoting skeletal tissue regeneration.
研究领域:
生物化学
·
材料科学
·
医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
·
2015
·Vol. 30
·期 6
·1179-1183
·
IF 0.399
Zhang Kuibao,Wen Guanjun,Yin Dan,Zhang Haibin
TiO 2 was employed as the waste form for disposal of simulated nuclide Sr. Preparation of Sr bearing rutile was explored under different sintering temperatures and Sr contents. The optimal treatment temperature was confirmed as 1 300 °C for the incorporation of SrO in rutile TiO 2 . Perovskite type SrTiO 3 was prepared as the resultant product. The limited containment capacity of SrO in rutile was speculated to be 56.5wt%. As the SrO content increases, the as-synthesized sample exhibits more porosity because SrTiO 3 phase demonstrates higher density than rutile and SrO. The 28 day normalized leaching rate (LRi) of Sr and Ti will decrease congruously as the SrO incorporation increases. The LR Sr value is lower than 0.1 g·m -2 ·d -1 , which is about 3 orders of magnitude higher than the LR Ti value.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Applied Ceramic Technology
·
2022
·Vol. 20
·期 2
·906-916
·
IF 2.328
Lingyu Jia,Peigang He,Dechang Jia,Jingkun Yuan,Delong Cai,Daxin Li,Xiaoming Duan,Zhihua Yang,Yu Zhou
Sr-containing ceramic products produced from geopolymer, (Na, Sr)-GP, have been reported as excellent candidate materials for the immobilization of radionuclide 90Sr, despite sintering temperature at 1200°C. In this work, the product possessing the best immobilization performance (leaching rate of 1.29% for Sr 2+ ) can be produced at 1000°C in the method of liquid-phase sintering via the addition of fluxing agent B 2 O 3 at 2.0 wt% in the geopolymer precursor. The mechanical properties of the geopolymer precursor (Na, Sr)-GP were also enhanced via the promotion role of B 2 O 3 to geopolymerization. It was revealed that the overall anti-leaching ability of the Sr-containing ceramic product not only depends on the microstructure of the loading substrate but also can be affected by the chemical state of radioactive strontium retention in the loading matrix.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Planetary Science Journal
·
2025
·Vol. 6
·期 3
·55
·
IF 4.3
Erbin Shi,Xiaojia Zeng,Jian Chen,Enming Ju,Zongcheng Ling
Calcium sulfates are widely distributed in Gale crater and Endeavour crater on Mars. However, the mole ratios of Ca2+ and SO3 in some Sr–Ba-rich sulfate veins are less than 1. This indicates that there may be additional solid solution phases on Mars, including Ca–Sr, Ba–Sr, and Ca–Ba sulfates, which, on Earth, are typically found in marine environments. In this study, we synthesized a series of Ca–Sr, Ba–Sr, and Ca–Ba sulfate solid solutions in the laboratory. These synthesized solid solutions were then characterized using various techniques, including X-ray powder diffraction (XRD), Raman, mid-infrared, and visible and near-infrared. Our results show that the XRD and Raman spectra of Ca–Sr and Ba–Sr sulfates varied with their cation contents. In particular, the linear relationships (R2 ≥ 0.98) between the mole ratios of cation ions and peak positions of {{\rm{SO}}}_{4}^{2{-}} tetrahedron (v1) in Raman spectra were obtained. The mole content of Ca2+, Sr2+, and Ba2+ can be precisely constrained in Ca–Sr, Ba–Sr, and Ca–Ba sulfate solid solution phases through linear relationships, respectively. These results are the experimental basis for analyzing in situ detection data (e.g., SHERLOC, SuperCam, and Oxia planum) and can be used to precisely constrain the mineral phases of calcium sulfate veins on Mars.
研究领域:
地质学
·
行星科学
·
光谱学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2020
·
IF 2.369
Xue-ping Zhang,Wei Wang,Han-zhong Zhang,Shi-hua Sang
In this paper, the stable phase equilibrium data of the ternary system CaBr2-SrBr2-H2O at T = 273, 298, and 323 K and 101.3 kPa have been determined by isothermal the dissolution equilibrium method. The phase diagrams of them at the investigated temperatures have been drawn. It is found that the isothermal phase diagrams of the CaBr2–SrBr2–H2O system at T = 273, 298, and 323 K are classified as a simple co-saturation type consisting of an invariant point and two univariant curves. The equilibrium solid phases corresponding to an invariant point of the system were detected as CaBr2·6H2O + SrBr2·6H2O at 273 and 298 K and those identified as CaBr2·4H2O + SrBr2·6H2O at 323 K. In this system, calcium bromide exhibits a strong salting-out effect on strontium bromide. Furthermore, isothermal solubilities at three temperatures were compared and discussed.
研究领域:
化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
·
2023
·
IF 4.6
Ruixi Liu,Guangyuan Chen,Zeru Wang,Qian Zhao,LinZhen Wu,Qinlin Li,Rongten Tian,Xin Chen,Xiaoan Li,Zhengguo Chen,Lin Zhu,Jing Chen,Tao Duan
The capture of the radionuclides strontium and cesium is of great importance to the environment, human health, and the sustainable development of nuclear energy, and zirconium phosphate with excellent ion exchange capacity has potential application in this field. In this work, we organically granulated zirconium phosphate to induce the formation of composite bead materials (CA@ZrP) with a calcium-containing phase with selectivity for Sr2+ and Cs+ higher than that of pure ZrP in low-pH environments and competing ionic environments. The adsorption performance of the material was systematically investigated. It was concluded that the adsorption performance of CA@ZrP improved with an increase in temperature, and under the dynamic adsorption experimental conditions, the treatment capacity of CA@ZrP for Sr2+ and Cs+ reached 404.79 and 302.2 bed volumes, respectively. The systematic study and characterization showed that the generation of the calcium-containing phase [Ca0.55ZrH0.9(PO4)2] promoted the exchange of Ca2+ with Sr2+ and Cs+, thus improving the selectivity of the composite beads. The highly selective composite bead material can be prepared in batches and easily recycled, providing a new idea for practical engineering applications.
研究领域:
核化学与放射化学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SUPRAMOLECULAR CHEMISTRY
·
2011
·
IF 1.94
Jing Cao,Jun Xiang Feng,Yong Xiang Wu,Xue Qun Pei,Jiao Jiao Yan,Yang Liu,Wen Jie Qin,Xiao Bin Zhang
A novel 15-aza-5-crown ether linked to styryl chemosensory 13-(4-((9H-fluoren-9-ylidene)methyl)-2-nitrophenyl)-1,4,7,10-tetraoxa-13-azacyclopentadecane was designed and synthesised, it would not occur during photoisomerisation under radiation of light but shows special capability of selectively recognising for Sr2+.
研究领域:
化学
·
材料科学
✓ 已验证
DOI
高影响因子
Biomaterials Science
·
2020
·Vol. 9
·期 3
·960-972
·
IF 6.183
Hongjie Zhang,Qiuquan Cai,Yanhui Zhu,Weipu Zhu
Numerous efforts have been made to prepare hydrogels with injectability, adhesivity and osteogenic activity for bone regeneration. However, current hydrogels with these characteristics have limited application in clinical translation due to their complex chemical compositions, which causes difficulty in batch production. In this study, a multifunctional hydrogel with a binary component is prepared for bone regeneration. Dopamine (DA) is first grafted to alginate (Alg) by amidation reaction to give Alg-DA. Then an injectable hydrogel is facilely prepared by mixing strontium ions with the Alg-DA aqueous solution, utilizing the dynamic ionic bonds between the strontium ions and carboxyl groups of Alg-DA. Under the simulated oxidation conditions in vivo, the injectable hydrogel can form stable chemical crosslinkages owing to the presence of catechol groups on Alg-DA. In addition, the catechol groups endow the hydrogel with significant tissue adhesivity. More importantly, the strontium ions endow the hydrogel with osteogenic activity. As indicated by animal experiments, the strontium containing hydrogel scaffolds help to treat rat bone defects within 8 weeks compared to hydrogels without strontium and control groups. This simple hydrogel constructed by using a binary component has achieved several necessary functions, and is expected to be used as a scaffold for bone tissue engineering in clinical applications.
研究领域:
生物材料学
·
组织工程学
✓ 已验证
DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2021
·
IF 7.963
Peigang He,Qikun Wang,Shuai Fu,Meiling Wang,Shengjian Zhao,Xuzhao Liu,Yuqi Jiang,Dechang Jia,Yu Zhou
This paper reports a facile route to prepare bulk zeolites with tunable phase compositions and microstructures by combining hydrothermal treatment and geopolymer precursor technique. Amorphous Na-based geopolymer (NaGP) is transformed into crystalline analcime following hydrothermal treatments. By systematically investigating the effects of hydrothermal conditions on the phase compositions and microstructures of the products, the optimal hydrothermal procedure is screened as treating NaGP in 1 M NaOH solution at 160 °C for 6 h. Furthermore, we achieve control over phase compositions of the resulting bulk zeolites by tailoring the initial Na/K ratio of geopolymer precursors. For instance, treating the geopolymer precursor with a Na/K ratio of 9: 1 under the optimal hydrothermal procedure leads to the formation of zeolite consisting of analcime and zeolite-P. The as-prepared adsorbents exhibit outstanding adsorption performance for the hazardous elements, among which analcime-zeolite-P shows an adsorption efficiency of 93.3% for Cs + , and NaGP exhibits an adsorption efficiency of 99.6% for Sr 2+ . Moreover, we reveal the mechanisms underlying the adsorption of Cs + and Sr 2+ in the adsorbents to be chemisorption . Meanwhile, ion exchanges also occur in NaGP and analcime-zeolite-P during Cs + adsorption. These results render geopolymers and their derived bulk zeolites promising for hazardous elements adsorption.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2024
·Vol. 333
·期 5
·2389-2402
·
IF 1.5
Mao Xueli,Xu Hechao,Liao Xin,Bu Fankang,Tang Jinrong,Yi Facheng
This study achieves the successful immobilization of simulated alpha- and beta-emitting radionuclides (Nd 3+ and Sr 2+ , respectively) by incorporating them into a glass matrix through Nd 2 O 3 /SrSO 4 (Nd/Sr). Varying mixture concentrations (5–30 wt% with mass ratios Nd:Sr varied from 10:1 to 1:10) in simulated radioactive soils were subjected to microwave sintering at 1500 °C for 0.5 h. Comprehensive assessments, including X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectra, scanning electron microscopy (SEM), and energy dispersive X-ray spectrometry (EDS), confirm the vitrification process’s efficacy. The vitrified sample exhibits an amorphous structure, smooth surface, and homogeneously distributed elements, highlighting microwave sintering as a promising method for the effective disposal of radioactive-contaminated soil. Graphical abstract
研究领域:
环境科学
·
核废物处理
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Sifan Li,Pengcheng Zhang,Yujuan Zhang,Kaikai Qiu,Lin Wang,Jianhui Lan,Yu Zhang,Xuwen Zhao,Chengzhen Miao,Weiqun Shi
In this work, we use a well-defined water-soluble macrocyclic molecule cucurbit[5]uril (CB5) to modify 2D Ti 3 C 2 T 2 MXene and assemble a novel high-performance adsorbent CB5-Ti 3 C 2 T 2 for Sr ion by density functional theory and experimental methods. The structural stabilities of two distinct types of CB5-Ti 3 C 2 T 2 (T = F, O and OH) complexes, i.e., CB5-Ti 3 C 2 T 2 (V) and CB5-Ti 3 C 2 T 2 (P) configurations are proved by binding energy and ab initio molecular dynamics (AIMD) simulations. Calculations of adsorption properties reveal that all the considered CB5-Ti 3 C 2 T 2 complexes can act as efficient adsorbents for Sr ion, among which CB5-Ti 3 C 2 O 2 complex possesses the best performance. The high affinity (the calculated adsorption energies < −7.6 eV) and selectivity of CB5-Ti 3 C 2 T 2 complex for Sr ion are attributed to the synergistic effect between CB5 molecule and Ti 3 C 2 T 2 MXene in the adsorption process, which arises from the multisite interactions of portal carbonyl groups of CB5 and surface functional groups of Ti 3 C 2 T 2 towards Sr. Finally, CB5-Ti 3 C 2 T 2 complex was successfully synthesized, and experimental results confirm its synergistic effect, good selectivity and high removal efficiency for Sr ions. In the treatment of strontium-containing wastewater with low concentrations, the distribution coefficient and decontamination factor of CB5-Ti 3 C 2 T 2 for Sr were determined to be as high as 2.88 × 10 5 mL/g and 144.9, respectively, and the separation factor ( SF Sr/Ca ) achieved a notable value of 67. 5. This work is expected to present a new strategy for the construction of high-performance MXene-based adsorbent for radionuclide elimination.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Bingbing Liu,Yifei Zhang,Peidong Yang,Yanfang Huang,Yubin Xue,Hu Sun,Shuzhen Yang,Guihong Han
Zinc electrolyte crystallization sediment (ZECS) generated in the zinc hydrometallugy industry contains valuable metals of strontium (Sr), manganese (Mn), and zinc (Zn), which has economical value but poses potential detrimental to the environment. However, the extraction and recovery of Sr is extremely difficult due to the thermodynamically stable Ca and Sr sulfate cocrystallization structure in ZECS. The destruction of refractory sulfate cocrystallization structure is a prerequisite for Sr extraction, and the carbothermal reduction roasting method is demonstrated to be efficient for the phase reconstruction. In this study, a stepwise Sr, Mn, and Zn recovery process from ZECS via carbothermal reduction roasting-acid leaching-selective precipitation-multistage extraction was proposed. In the reduction roasting procedure, all the sulfates including CaSO 4 , SrSO 4 , and Ca 0.7 Sr 0.3 SO 4 are reduced to soluble sulfides. Meanwhile, most MnO 2 is converted to a low-valence Mn product (MnO) that is soluble in acid, and the reduced Zn (g) is volatilized which can be collected from the flue dust. In the acid leaching procedure, the leaching efficiencies of Sr, Ca, and Mn are as high as 97.34%, 97.44%, and 95.49% respectively, while 99.50% Si in the form of silica is enriched in the leaching residue. After that, high-purity Sr solution was obtained after selective precipitation for Mn removal and D2EHPA multistage extraction for Ca removal. 97.41% Mn in the leaching solution is precipitated by adjusting the pH value to 9.5 with NaOH solution. After four-stage extraction, 79.60% Sr and only 0.35% Ca are retained in the aqueous phase. The purified solution contains 2.88 g/L Sr, 0.052 g/L Ca, and 0.014 g/L Mn, which can be used to prepare industrial SrCO 3 product via the carbonation operation. Thermodynamic behavior and reduction roasting reconstruction mechanism of Ca and Sr sulfate cocrystallization structure in ZECS were discussed in this work. The distributions of main metal elements (Sr, Ca, Mn, and Zn) in ZECS during the carbothermal reduction roasting-acid leaching-selective precipitation-multistage extraction process were also systematically studied.
研究领域:
冶金学
·
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）