CHEMICAL ENGINEERING JOURNAL
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2024
·
IF 13.3
Qingrong Zhang,Yingcai Wang,Yuhui Liu,Qian Liu,Youqun Wang,Zhimin Dong,Xiaohong Cao,Zhibin Zhang,Yunhai Liu
In order to realize energy cost savings in waste salt recycling and electrolysis processes during the nuclear fuel cycle , this paper presents a novel approach for the purification of waste molten salt by employing molecular sieves to absorb excess fission products selectively. The method is founded on the principles of electrolytic refining to achieve sustainable development of reprocessing. In this study, a systematic investigation of the electrochemical reduction/oxidation processes of Y(III)/In(III) was performed on electrode, as well as the electrode reaction of Y(III) on an In electrode at 773 K. Constant-current electrolysis produced an extraction rate of 93.11 % for Y(III) on the In electrode. In order to improve the current efficiency, greatly save the processing cost, and realize the sustainable development of dry post-processing. Subsequently, the waste molten salt environment following electrolysis was simulated, and the fission product was effectively adsorbed utilizing 5A molecular sieves, resulting in a yttrium removal rate of up to 99.94 %. This process not only significantly reduces the cost of electrolysis but also enhances the removal efficiency of target nuclides. The study examined the molten salt adsorption mechanism of molecular sieve, determining the primary adsorption mechanism to be chemical one (ion exchange), through the application of pseudo-first-order, pseudo-second-order, and Weber-Morris kinetic models for re-evaluation.
研究领域:
核工程
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化学工程
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材料科学
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环境科学
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高影响因子
BIOPROCESS AND BIOSYSTEMS ENGINEERING
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2024
·Vol. 47
·期 3
·355-366
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IF 3.5
Duan Xiaoyan,Pi Qian,Tang Lei
Dyes in wastewater have adverse effects on the environment and human health. Dye-decolorizing peroxidase (DyP) is a promising biocatalyst to dyes degradation, but the decolorization rates varied greatly which influencing factors and mechanisms remain to be fully disclosed. To explore an effective decolorizing approach, we have studied a DyP from Rhodococcus jostii ( Rh DyPB) which was overexpressed in Escherichia coli to decolorize four kinds of dyes, Reactive blue 19, Eosin Y, Indigo carmine, and Malachite green. We found the decolorization rates of the dyes by purified Rh DyPB were all pH-dependent and the highest one was 94.4% of Malachite green at pH 6.0. ESI–MS analysis of intermediates in the decolorization process of Reactive blue 19 proved the degradation was due to peroxidase catalysis. Molecular docking predicated the interaction of Rh DyPB with dyes, and a radical transfer reaction. In addition, we performed decolorization of dyes with whole E. coli cell with and without expressing Rh DyPB. It was found that decolorization of dyes by E. coli cell was due to both cell absorption and degradation, and Rh DyPB expression improved the degradation rates towards Reactive blue 19, Indigo carmine and Malachite green. The effective decolorization of Malachite green and the successful application of whole DyP-overexpressed cells in dye decolorization is conducive to the bioremediation of dye-containing wastewaters by DyPs. Graphical abstract
研究领域:
环境生物技术
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酶催化
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生物修复
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蛋白质工程
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废水处理
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高影响因子
HYDROMETALLURGY
·
2019
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IF 3.465
Jishen Li,Xiyun Yang,Yuyao Fu,Haiqiang Huang,Zhijie Zhong,Yuanyuan Wang
A comprehensive utilization process of Fe, Mn, Ni and Co in the acid leaching liquor of spent lithium ion batteries was put forward. Fe and part of Mn were extracted to synthesize Fe-doped lithium ion-sieve. Ni, Co and the rest of Mn were coprecipitated to prepare ternary lithium ion battery cathode material precursor Ni x Co y Mn 1-x-y (OH) 2 . After removing Cu 2+ ions in acid leaching liquor by adding MnS, two-stage counter current extraction and one-stage stripping were used to extract all Fe 3+ and 40.3% of Mn 2+ ions in sulfuric acid leaching solution to obtain a MnSO 4 stripping solution containing Fe 3+ ions. Iron-doped lithium ion-sieve was synthesized by oxidation of the resulting MnSO 4 solution with KMnO 4 followed by roasting and acid leaching. Fe incorporates into the lattice of lithium ion-sieve and improves the structure stability. Fe-doped lithium ion-sieve shows Li adsorption capacity of 35.29 mg.g −1 and Mn dissolution loss of 1.66%. The Li + adsorption in salt lake brine with the Fe-doped ion-sieve follows a pseudo-second-order kinetic model . Ni x Co y Mn 1-x-y (OH) 2 is regular spherical particles with β-Ni(OH) 2 -like structure. This process provides a simple method for recovery and utilization of Mn, Fe, Ni and Co in spent lithium ion batteries .
研究领域:
材料科学
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资源回收利用
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电化学
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环境工程
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能源存储
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2023
·
IF 6.2
Peng-Fei Li,Chun-Li Hu,Bing-Xuan Li,Fang Kong,Jiang-Gao Mao
Two UV inorganic yttrium selenite optical materials, namely, Y(HSeO 3 )(SeO 3 )(H 2 O)·(H 2 O) (1) and Y 2 (SeO 3 ) 2 (SeO 4 )(H 2 O) 2 ·(H 2 O) 0.75 (2), have been synthesized successfully by hydrothermal reactions . Of these, Y 2 (SeO 3 ) 2 (SeO 4 )(H 2 O) 2 ·(H 2 O) 0.75 (2) is a new mixed valent selenium oxide containing Se(IV) and Se(VI) cations simultaneously. Y(HSeO 3 )(SeO 3 )(H 2 O)·(H 2 O) (1) shows a 3D structure composed of 2D yttrium selenite layers linked by O−H···O bonds. Y 2 (SeO 3 ) 2 (SeO 4 )(H 2 O) 2 ·(H 2 O) 0.75 (2) exhibits a 3D structure composed of 2D yttrium selenite layers connected by SeO 4 tetrahedron. Y(HSeO 3 )(SeO 3 )(H 2 O)·(H 2 O) (1) crystallized in a chiral space group P 2 1 2 1 2 1 and could display a moderate SHG intensity about 0.7 times of the commercial KH 2 PO 4 (KDP). Its powder laser damage threshold quantity was estimated to be 120.2 MW/cm 2 , which is about 46.2 times that of AGS (2.6 MW/cm 2 ). UV–vis–NIR spectra reflectance spectra showed that these solids are wide band gap compounds with Eg of 5.5 and 5.1 eV respectively. Theoretical calculations disclosed that Y(HSeO 3 )(SeO 3 )(H 2 O)·(H 2 O) (1) is an indirect band gap structures and its bandgaps is determined by O and Se atoms.
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JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2013
·Vol. 97
·期 3
·990-995
·
IF 2.107
Kuo Jiang,Songbai Liu,Yuan Li,Yaofei Li
Powders of zirconia doped with 8 mol% REO 1.5 (RE = Yb, Y, Gd, and Nd) were synthesized by using the sol–spray pyrolysis method. The effects of RE 3+ ionic radius on monoclinic (m) phase content of powders were investigated. The XRD results showed that the metastable tetragonal (t′) phase underwent a complete phase change to form m and cubic (c) phases after a heat treatment of 50–100 h at 1450°C. A cation size-dependent reduction in the m phase content of the REO 1.5 partially stabilized ZrO 2 powders was observed. The SEM–EDS analysis of the powders revealed that the RE 3+ concentrations in the c phases decreased with decreasing the RE 3+ ionic radius. These results indicate that the stabilizer concentration of the c phase can be attributed to RE 3+ ionic radii, resulting in different m phase contents. Compared to the REO 1.5 single doped ZrO 2 , the m phase contents of 8 mol% (RE 0.5 Yb 0.5 )–ZrO 2 (RE = Y, Gd, and Nd) powders were significantly reduced. The results prove that the stabilizer with a lower RE 3+ size is effective in reducing the m phase content of partially stabilized ZrO 2 after annealing at high temperatures.
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CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Yaochen Si,Lingfeng Li,Ruida Wang,Songting Zhang,Yingnan Cao,Hongyu Li,Shixian Zhao,Hongxia Li,Jing Feng
With the development of high power and high thrust-weight ratio aeronautics and astronautics, aircraft engines and gas turbine technology, the development of thermal barrier coating (TBCs) material is an enormous challenge, which requires both high temperature stability and resistance to molten calcium-magnesium-aluminosilicate (CMAS) corrosion. In this study, five high-entropy rare-earth tantalate (5RE 0.2 )TaO 4 (Re=Y, Gd, Dy, Ce, Sm, La, Yb) ceramics were prepared by high temperature solid state reaction. The phase composition, microstructure, thermophysical and mechanical properties and CMAS corrosion resistance of the obtained high-entropy (5RE 0.2 )TaO 4 ceramics were systematically investigated. The as-prepared five high-entropy rare-earth tantalate (5RE 0.2 )TaO 4 ceramics had monoclinic structure and uniform composition. The five (5RE 0.2 )TaO 4 ceramics all had lower Young’s modulus (135.06∼158.63 GPa), Vickers hardness (3.7∼6.2 GPa), fracture toughness (2.30-2.80 MPa·m 1/2 ) and brittleness index (1.45-2.53 μm –1/2 ) than that of YSZ. The thermal expansion rate and thermal expansion coefficients of the five (5RE 0.2 )TaO 4 ceramics were close to each other but showed higher value than that of single RETaO 4 (RE= Gd, Dy, Sm or Y) and lower value than that of YSZ. The thermal diffusivities and thermal conductivity of the five (5RE 0.2 )TaO 4 ceramics were lower than that of YSZ, YTaO 4 and GdTaO 4 at all temperature. During molten CMAS corrosion, CMAS melt diffused into the (5RE 0.2 )TaO 4 ceramics and then corroded (5RE 0.2 )TaO 4 grains, thereby forming a corrosion area composed of reaction layer and penetration layer. The CaO in penetrated CMAS melt could react with Ta element in (5RE 0.2 )TaO 4 ceramics to generate Ca 2 Ta 2 O 7 in the reaction layer and reduce the content of CaO in the penetrated CMAS melt, which increased the viscosity of the CMAS melt and inhibited the further penetration of CMAS into the ceramics. Based on the obtained results, the CMAS corrosion of (5RE 0.2 )TaO 4 ceramics was primarily controlled by the Ca 2 Ta 2 O 7 formation and the CMAS penetration.
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高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Taoyi Lu,Xingmin Feng,Zhiqin Wen,Li Tang,Suzhen Kang,Jiyuan Huang,Gaoxiang Wei,Siyi Huang,Defeng Long,Sheng Wang
In this study, (Ce 0.2 Zr 0.2 La 0.2 Yb 0.2 Ln 0.2 )O 2- δ (Ln = Er, Y, Sm; labelled as H-Er, H-Y, H-Sm) high-entropy fluorite oxides (HEFOs) are designed by standard deviation and first-principles calculation. These HEFOs are subsequently synthesized via solid-phase reaction method, and the phase formation, microstructure, mechanical and thermal properties of the three samples have been systematically investigated. The results show that the three samples, exhibiting a single-phase fluorite structure, are successfully prepared after sintering at 1600 °C, and all the elements are uniformly distributed with no elemental segregation and agglomeration. The calculated δ of H-Er, H-Y and H-Sm are 0.3399, 0.3668 and 0.3458, respectively, so the chemical formula of three HEFOs are (Ce 0.2 Zr 0.2 La 0.2 Yb 0.2 Er 0.2 )O 1.6601 , (Ce 0.2 Zr 0.2 La 0.2 Yb 0.2 Y 0.2 )O 1.6332 and (Ce 0.2 Zr 0.2 La 0.2 Yb 0.2 Sm 0.2 )O 1.6542 , respectively. Additionally, the effects of rare earth ions (Er, Y and Sm) on the hardness, Young's modulus and thermal conductivity of HEFOs are analyzed. H-Y exhibits the highest hardness value and largest Young's modulus among the three HEFOs, primarily due to the largest mean acoustic velocity and cohesion energy in absolute value, smallest AGS and average bond lengths. The thermal conductivities ( κ ) of the three samples are only 1.465–1.598 W m −1 K −1 at 1000 °C. Furthermore, the thermal conductivities of the three samples are significantly lower than that of 8YSZ within the temperature range from 25 °C to 1000 °C, and H-Sm exhibits the lowest thermal conductivity in this temperature range. Consequently, they are anticipated to have promising applications in the field of thermal barrier coatings (TBCs).
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高影响因子
Small Methods
·
2025
·
IF 9.1
Yaping Wang,Tingshi Zhang,Xinlian Huang,Yurong Zeng,Siyuan Wei,Zanyong Zhuang,Chongbing Zhu,Yan Yu
Herein, a versatile amorphous-to-crystalline transformation (ACT) strategy is described, to furnish various metals (Cu, Co, Ni, Cs, and Y) based atomically dispersed catalysts (ADCs) on thin holey 2D Al 2 O 3 . This approach, which involves adjusting reactant stoichiometry, enables the continuous modulation of particle size of ADCs at an atomical level, giving the ultrafine products as single atom, cluster, or nanoparticle catalysts. This synthesis method allows a straightforward analysis and comparison of the reactivity of the ADCs catalysts based on the dispersion of the active metal. In the case of Cu, the cluster catalyst 0.2-Cu/Al 2 O 3 outperforms the single atom catalyst 0.1-Cu/Al 2 O 3 and the nanoparticle catalyst 0.3-Cu/Al 2 O 3 in the oxidation of refractory organic molecules, thanks to its superior electron transport and surface adsorption properties. These findings are well supported by the Density functional theory (DFT) calculations. Additionally, this method facilitates the preparation of atomic clusters with a very small size of 0.5–1 nm, composed of just a few atoms, as exemplified by Ni-based ADCs. The developed synthesis enriches the library of ADCs and demonstrates the potential of amorphous-to-crystalline transformation in creating advanced ultrasmall functional materials.
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DOI
PubMed
高影响因子
STAR Protocols
·
2023
·
IF 0
Huan Li,Jie Yang,Jingfeng Li,Zhenxing Gao,Jiang Xu,Chaoyang Li
Summary Defects of glycosylphosphatidylinositol (GPI)-anchor synthesis lead to the production of pro-proteins with altered functions. However, pro-protein-specific antibodies for functional analysis are lacking. Here, we present a protocol to differentiate GPI-anchored prion protein (PrP) from pro-PrP in cancer cells using a complementary approach applicable to other GPI-anchored proteins. We first describe steps for phosphatidylinositol-specific phospholipase C treatment and flow-cytometry-based detection. We then detail the carboxypeptidase Y (CPDY) assay including antibody immobilization, affinity purification, CPDY treatment, and western-blot-based detection. For complete details on the use and execution of this protocol, please refer to Li et al. (2022). 1
研究领域:
分子生物学
·
细胞生物学
·
癌症研究
·
生物化学
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DOI
PubMed
RARE METALS
·
2024
·
IF 9.6
Li Hang,Wang Fei,Sun Xiao-Jing,Qi Liu-Jie,Li Jing-An,Iqbal Mujahid,Guan Shao-Kang
Ischemic stroke is increasing worldwide, and stent intervention has gradually become one of the effective treatments. Owing to its good mechanical properties and biocompatibility, biodegradable Mg-Zn-Y-Nd alloy (ZE21B) has good application prospects in vascular stents. However, too fast degradation and delayed endothelialization are the bottleneck problem to limit its further application. In this study, the bio-inspired coating barnacle cement cp19k is constructed on ZE21B surface through electrostatic spraying to improve the corrosion resistance and pro-endothelialization ability. The coating was evaluated through electrochemistry, static immersion corrosion, in vitro blood experiments and cell experiments. Cp19k effectively improved the corrosion resistance of the substrate ZE21B, reduced the degradation rate, improved endothelial cell proliferation and migration capabilities, inhibited smooth muscle cells proliferation and regulated contractile phenotype, inhibited macrophage adhesion, regulated macrophage M2 phenotype, and reduced the expression of inflammatory factor of TNF-α and inhibited fibroplasia in vivo. Our data indicated that the barnacle cement cp19k coating had potential application on the surface modification of Mg alloy cerebrovascular stent. Graphical abstract
研究领域:
生物医学工程
·
材料科学
·
血管生物学
·
神经学
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高影响因子
JOURNAL OF RARE EARTHS
·
2012
·
IF 0.901
Xiaoming PENG,Yufeng HU,Chuanwei JIN,Zhixin WANG,Chao MIAO,Zheyu LI
Viscosities were measured for the ternary systems Y(NO 3 ) 3 +La(NO 3 ) 3 +H 2 O, La(NO 3 ) 3 +Ce(NO 3 ) 3 +H 2 O, and La(NO 3 ) 3 +Nd(NO 3 ) 3 + H 2 O and their binary subsystems Y(NO 3 ) 3 +H 2 O, La(NO 3 ) 3 +H 2 O, Ce(NO 3 ) 3 +H 2 O, and Nd(NO 3 ) 3 +H 2 O at 293.15, 298.15 and 308.15 K. The results were used to test the applicability of simple equations for the viscosity of the mixed solutions. The predictions agreed well with measured values, implying that the viscosities of the examined electrolyte solutions could be related to those of their constituent binary solutions using these simple equations.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Jiadong Hou,Yufeng Liu,Chufei Cheng,Fuhao Cheng,Pengfei Qin,Yang Miao,Weihua Ji,Xiaomin Wang
The limited efficiency of traditional trial-and-error experiments has impeded the development and application of high-entropy fluorite oxides in thermal insulation coatings. To solve this problem, a novel entropy descriptor based on first principles is presented to help select candidate components for synthesizing high-entropy fluorite structure oxides. Results show that the compatibilities of 10 single-phase high-entropy fluorite oxides can be accurately predicted based on entropy formation ability. In the studied (Zr, Hf, Pr, La, X) O 2-δ system, a correlation between thermal characteristics and size/mass differences was established by designing the size and mass of X. Specifically, we found that the thermal conductivity is more strongly correlated with the difference in atomic mass, while the coefficient of thermal expansion is strongly correlated with the difference in atomic size. X-ray photoelectron spectroscopy (XPS) analysis shows that the concentration of oxygen vacancy can effectively reduce the thermal conductivity of high-entropy fluorite oxides. In addition, the values of hardness, elastic modulus and thermal conductivity of five single-phase fluorite oxides are successfully predicted by first principles calculation , and the differences between these values and the experimental results are small, which provides a prospective significance for the performance prediction of high-entropy fluorite oxides. Our findings provide a strategy for customizing high-entropy fluorite single-phase oxides with suitable properties to meet the performance requirements of thermal barrier coatings (TBCs).
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危险品化学品经营许可证（带存储）