SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Yunyun Wang,Li Chen,Yinhua Jiang,Xinyan Yang,Jiangdong Dai,Xiaohui Dai,Mingdong Dong,Yongsheng Yan
Applying polyvinylidene fluoride (PVDF) monolith for phosphates removal can improve the operability of the adsorption process compared with some other powder nanomaterials. However, as the commonly used synthesis strategy, non-solvent induced phase separation (NIPS) was deemed not environmentally friendly enough since the dissolution of PVDF often involved volatile organic compounds (VOCs). This article designed a salt sacrificial template method to fabricate a 3D porous PVDF monolith, and then in-situ growth of lamellar La(OH) 3 on the PVDF foam was realized to enhance the adsorption affinity to phosphates pollution. No VOCs were used or released during the whole synthesis process. The adsorption for phosphates was as high as 56.2 mg g −1 , and easy reusability of the novel PVDF monolith was realized. In addition, this PVDF-La(OH) 3 foam exhibited good adsorption properties in both oil and water environments, which implied it could not only adsorb phosphates in actual water samples but also separate oil contaminants from water. All these implied that this PVDF-La(OH) 3 foam could be a potential candidate for large-scale industrial adsorption and separation of phosphates. This PVDF-La(OH) 3 foam could be a potential candidate for large-scale industrial adsorption and separation of phosphates.
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高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2023
·
IF 9.8
Huidi Zhang,Yao Deng,Junhui Yang,Jinglin Yin,Jing Wang,Hongbo Xiao,Lizhi Wang,Cuihong Zhang,Wenlei Wang
In this study, MnPc intercalated Zn/Fe layered double hydroxides (MnPc/ZF−LDH) were synthesized by pillared intercalation modification with different MnPc intercalation amounts and used for the selective transformation and removal of As(III) from the arsenate-phosphate mixed solution. Fe−N bonds were constructed by the complexation of MnPc and iron ions on the Zn/Fe layered double hydroxides (ZF−LDH) interface. The DFT calculation results show that the binding energy of Fe−N bonded to arsenite (−3.75 eV) was higher than that of phosphate (−3.16 eV), resulting in MnPc/ZnFe−LDH exhibiting high As(III) selective adsorption performance and anchoring it rapidly in the arsenite -phosphate mixed solution. The maximum adsorption capacity of 1MnPc/ZF−LDH for As(III) could reach 180.7 mg·g −1 under dark conditions. MnPc also acts as a photosensitizer to provide more active species for the photocatalytic reaction. A series of experiments demonstrated that MnPc/ZF−LDH exhibits high As(III) selective photocatalytic performance. A total of 10 mg·L −1 of As(III) was completely removed in the reaction system within 50 min in a single As(III) environment. In an environment with As(III) and PO 4 3− , it achieved 80.0 % removal efficiency of As(III) and showed a good reuse effect. The introduction of MnPc could improve the utilization of visible light by the MnPc/ZnFe−LDH. The singlet oxygen generated from photoexciting MnPc leads to abundant ZnFe−LDH interface OH. In addition, MnPc/ZnFe−LDH shows good recyclability , making it a promising multifunctional material for the purification of arsenic-polluted sewage.
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PubMed
高影响因子
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
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2021
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IF 3.995
Shaohua Wang,Ping Yang,Xiangfei Sun,Lina Feng,Congcong Jin,Menglei Ren,Honglong Xing,Jianjun Shi
Because of their low synthesis cost, large specific surface area, and good energy storage performance, microporous metal-based composites have been widely used in supercapacitors and the hydrogen evolution reaction (HER). Flower-like Ni foam@ (@, coating) NCo 2 O 4 @Ni(OH) 2 /NiOOH (NF@NCO@NOH) composites were synthesized through a simple solvent-controlled method and following an electrochemical deposition process. The as-synthesized composites benefit from high specific area, a hierarchical porous structure, and the synergistic effect of Ni and Co, showing a high area-specific capacitance of 23.75 F cm −2 at a continuous current of 5 mA cm −2 . The assembled asymmetric supercapacitor exhibits an energy density of 125 Wh kg −1 at a power density of 6.24 kW kg −1 . Furthermore, 84.1% of the capacity was retained after 10,000 cycles, suggesting the sample has excellent electrochemical stability. Moreover, an overpotential of 162 mV at a current density of 10 mA cm −2 and a Tafel slope of 95 mV dec −1 were obtained in the HER measurement, indicating that the as-synthesized flower-like electrode material possesses potential applications in the HER.
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高影响因子
Greenhouse Gases-Science and Technology
·
2018
·Vol. 9
·期 1
·10-18
·
IF 1.991
Wei Liu,Ye Wu,Tianyi Cai,Xiaoping Chen,Dong Liu
Global climate change resulting from substantial CO 2 emissions is increasingly attracting attention, and coal-fired power plants are a major source of CO 2 emission, so it is necessary to control and reduce CO 2 emissions from power plants. Using alkali-based solutions for CO 2 capture is thought to be an effective method to achieve this but poor CO 2 sorption/desorption kinetics inhibit its development. The use of nanofluids, prepared by adding nanoparticles to an alkali-based solution, is a promising way to improve CO 2 sorption/desorption reactivity because the addition of nanoparticles not only improves the gas-liquid mass/heat transfer but also enhances the reaction kinetics. In this paper, a nanostructured Cu/TiO(OH) 2 was prepared and used to accelerate the CO 2 sorption/desorption performance of a potassium-based solution. The CO 2 sorption/desorption reaction rates increased with the thermal conductivity of the nanofluid but the inclusion of more nanoparticles resulted in particle sedimentation. The potassium-based solution containing 0.014 vol% of the nanostructured Cu/TiO(OH) 2 was therefore the targeted nanofluid that gave the best CO 2 sorption/desorption performance and cyclic stability. © 2018 Society of Chemical Industry and John Wiley & Sons, Ltd.
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POLYMER
·
2024
·
IF 4.1
Xiang Dong,Zhiyu Sun,De-long Li,Qiancheng Duan,Yan Ma,Song Liu
As epoxy resin (EP) is widely used in the microelectronic field, it is essential to improve its electromagnetic wave (EMW) absorption and flame retardancy simultaneously. In this work, we synthesized a novel nanohybrid, RMN (Fe 3 O 4 /NHS@M(OH)(OCH 3 )@rGO (M = Co, Ni)), with petal-shaped anisotropic interfaces, by using graphene oxide as the core and the 2D nanosheets M(OH)(OCH 3 ) (M = Co, Ni) as the petal, with nickel hydroxystannate and ferrite as further modifications. The RMN combines carbon-based materials, ferrites and conductors, and represents the petal-like structure with rich nondirectional interfaces. The results show that EP composite containing 25 wt% RMN represented excellent EMW absorption, with a minimum reflection loss of −55.79 dB (with 7.4 mm thickness at 3.1 GHz). Moreover, the EP composite with 15 wt% RMN (EP/RMN700-3) had the lowest peak heat release rate of 470.9 kW m −2 , which was 69.7 % lower than pure EP, showing a significantly improving in flame retardant. The thermal conductivity efficiency of EP/RMN700-3 increased to 128.4 % compared with the pure EP, which effectively reduces fire risk caused by heat accumulation. This study provides a valuable solution to overcome the challenges of EMW absorption and flame retardant for EP in the microelectronic materials field.
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高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2025
·
IF 2.1
Dong-qin Bi,Shu-han Li,Xue-jia Zhang,Zi-xiao Zhao,Qi-chao Yang,Zhan-ping Qiao
Two-phase equilibrium of ternary systems of CdBr2–l-proline/(4-OH-l-proline)–H2O at T = 298.15 K is studied. Their isothermal solution equilibrium phase diagrams have been drawn based on the solubility data. Two double salts (Cd(C5H9NO2)Br2·H2O and Cd(C5H9NO3)Br2) have been found by the Schrienemakers method in phase diagrams, and they are all congruently soluble in water. Both of them have been synthesized and characterized by powder XRD and TG-DTG. For the first time, enthalpies of solution of Cd(C5H9NO2)Br2·H2O and Cd(C5H9NO3)Br2 are measured in water, and their standard molar enthalpies of formation at 298.15 K are calculated by designing thermochemical cycles according to the Hess law. By comparison, it is found that the region of infinite dissolution appears in the ternary system of CdBr2–l-proline–H2O at 298.15 K. If the composition of the solution is in this region, there is no crystal when the water evaporates and only a viscous mixture can be obtained.
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Journal of Proteomics
·
2024
·
IF 2.8
Jiajia Li,Dongzhen Liu,Man Cui,Zhentong Wei
High-grade serous ovarian cancer (HGSOC) has a high death rate and poor prognosis. The main causes of poor prognosis are asymptomatic early disease, no effective screening method at present, and advanced disease. Changes in cellular metabolism are characteristic of cancer, and plasma metabolome analysis can be used to identify biomarkers. In this study, we used Q Exactive liquid chromatography tandem mass spectrometry (LC–MS/MS, QE) to compare the differentiation between plasma samples (22 HGSOC samples and 22 normal samples). In total, we detected 124 metabolites, and an orthogonal partial least-squares-discriminant analysis (OPLS-DA) model was useful to distinguish HGSOC patients from healthy controls. Choline, 25-hydroxyvitamin D2, and sphingomyelin (d18:0/16:1(9Z) (OH))/SM(d18:0/16:1(9Z) (OH)) showed significantly differential plasma levels in HGSOC patients under the conditions of variable importance in projection (VIP) > 1, p < 0.05 using Student's t - test, and fold change (FC) ≥ 1.5 or ≤ 0.667. Metabolic pathway analysis can provide valuable information to enhance the understanding of the underlying pathophysiology of HGSOC. In conclusion, the Q Exactive LC/MS/MS method validation-based plasma metabolomics approach may have potential as a convenient screening method for HGSOC and may be a method to monitor tumor recurrence in patients with HGSOC after surgery Significance High-grade serous ovarian cancer (HGSOC) has a high death rate and poor prognosis. The main causes of poor prognosis are asymptomatic early disease, no effective screening method at present, and advanced disease. Changes in cellular metabolism are characteristic of cancer, and plasma metabolome analysis can be used to identify biomarkers. In this study, we used Q Exactive liquid chromatography tandem mass spectrometry (LC–MS/MS, QE) to compare the differentiation between plasma samples (20 HGSOC samples and 20 normal samples). In total, we detected 124 metabolites, and an orthogonal partial least-squares-discriminant analysis (OPLS-DA) model was useful to distinguish HGSOC patients from healthy controls. Choline, 25-hydroxyvitamin D2, and sphingomyelin (d18:0/16:1(9Z) (OH))/SM(d18:0/16:1(9Z) (OH)) showed significantly differential plasma levels in HGSOC patients under the conditions of variable importance in projection (VIP) > 1, p < 0.05 using Student's t- test, and fold change (FC) ≥ 1.5 or ≤ 0.667. Metabolic pathway analysis can provide valuable information to enhance the understanding of the underlying pathophysiology of HGSOC. In conclusion, the Q Exactive LC/MS/MS method validation-based plasma metabolomics approach may have potential as a convenient screening method for HGSOC and may be a method to monitor tumor recurrence in patients with HGSOC after surgery.
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PubMed
高影响因子
FUEL
·
2024
·
IF 6.7
Yuhuai Shi,Xuefang Cao,Qiaoni Ren,Tengyue Song,Yuhao Wu,Zhixian Wei,Xiong Cao
This study explores the potential of energetic metal–organic frameworks (E-MOFs) to enhance the combustion performance of solid propellants. A {[Bi 6 O 3 (tza) 5 (NO 3 ) 2 (OH) 5 ]·H 2 O} n (Bi-MOF) incorporating the energetic ligand tetrazole-1-acetic acid (Htza) was synthesized and evaluated for structural characteristics and properties. The catalytic thermal decomposition of cyclotrimethylene trinitramine (RDX) and cyclotetramethylene tetranitramine (HMX) by mixed systems was investigated. These systems consisted of Bi-MOF and copper-iron hetero-metallic compound ({[CuFe 3 O(tza) 6 (H 2 O) 3 ]·Cl·(NO 3 ) 2 ·4H 2 O} n , CuFe-MOF), previously reported by our group in different ratios. The effect of the mixed system with the highest synergy index on the combustion performance of composite modified double-base propellant (RDX-CMDB) and nitrate ester plasticized polyether propellant (HMX-NEPE) was investigated. The impact of varying carbon black (CB) contents on the catalytic performance of the mixed system was also examined. The results showed that Bi-MOF exhibits good thermal stability ( T dec = 226.9 °C) and insensitivity ( IS >40 J, FS >360 J). The mixed system, comprising Bi-MOF and CuFe-MOF in a 2:1 ratio (M 2 ), exhibited the highest synergistic indices (3.35 and 3.24) on thermal decomposition for RDX and HMX. RDX-CMDB and HMX-NEPE propellant formulations containing M 2 and a small amount of CB exhibited significant improvements in combustion performance. RDX-CMDB propellant exhibited up to an 80.6 % increase in burning rate and up to a 59.6 % reduction in pressure index. The pressure indices of NEPE without and with aluminum were reduced from 0.65 and 0.50 to 0.38 and 0.40, respectively (10–20 MPa, 1–20 MPa). These findings highlight the promise of the mixed system, formed by Bi-MOF and CuFe-MOF, as a potential combustion catalyst for RDX-CMDB and HMX-NEPE propellants.
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高影响因子
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
·
2024
·
IF 4
Yong-Xiang Wu,Xun Zhou,Benwang Zhou,Chao Li,Peng Cui,Manhuan Cheng,Yang Wang,Xinsong She
Presently, Cu(OH) 2 nanowire arrays@Cu Foam (Cu(OH) 2 –NWA@Cu Foam) nanostructure has been confirmed to possess an excellent capacity of nonenzymatical electroanalysis of histamine (His). Based on Cu(OH) 2 –NWA@Cu Foam electrode, electrochemical investigations elucidated electron transfer kinetics principles of electrooxidation of His. Substantially, it was realized that a four–electron–transferring dehydrogenation was involved in diffusion–controlled electrooxidation of His, contributing tremendously to establishing as–proposed mechanization of His electrooxidation. At optimal conditions, Cu(OH) 2 –NWA@Cu Foam electrode reflected excellent electrochemical performance such as sensitivity of 3.089 mA mM –1 cm –2 , limit of determination of 94 nM, respond time of 1.6 s and linear respond rang of 0.5–1250 μM. The outperformed electroanalytical performance can be physically explicated by the dedications from larger exposed surface area, bigger interface–hydrophilicity–deduced His diffusion coefficient and less charge transfer resistance. Moreover, the outstanding selectivity, stability and reproducibility of Cu(OH) 2 –NWA@Cu Foam electrode ensured its practical effectiveness in regulating real His levels in fermented mandarin fish. Compared with control group, the mandarin fish by inoculating Lactobacillus sakei subsp . sakei delivered less His contents, deducing that inoculation of Lactobacillus sakei subsp . sakei can effectively depress His generation during fermentation process. Eventually, the one–step as–established Cu(OH) 2 –NWA@Cu Foam nanostructure positioned itself as an upcoming possibility to pursue commercialized utilization.
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高影响因子
DALTON TRANSACTIONS
·
2022
·Vol. 52
·期 2
·376-383
·
IF 4.569
Enming Ping,Lingyun Kong,Mengyao Liu,Yunshan Zhou,Lijuan Zhang,Nan Chen
The reaction of porous γ-Al2O3 particles acting as both a sacrificial template and an aluminum source with 1,4-naphthalene diacid (H2NDC) resulted in the formation of γ-AlOOH@Al(OH)(1,4-NDC) composites, in which ZIF-67 was then loaded by the in situ crystallization method, leading to the formation of γ-AlOOH@Al(OH)(1,4-NDC)@ZIF-67 composites. The deliberately designed composite was used to separate H2/D2 at 77 K in a 1 m chromatographic column. The results demonstrated that the optimized composite can achieve the effective separation of H2/D2 in gas chromatography due to the additive effects of kinetic sieving and chemical affinity quantum sieving of Al(OH)(1,4-NDC) and ZIF-67. By optimizing chromatographic separation conditions, the resolution R reached 2.02 with the separation time t = 7.72 min. The composite also showed satisfactory repeatability and reproducibility.
研究领域:
材料科学
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分离科学
·
物理化学
·
纳米材料
·
能源化学
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高影响因子
ACS Sensors
·
2025
·
IF 9.1
Xiao Ma,Rong Tan,Hong Chen,Jiawei Zhang,Lei Ge,Tingting Zhao,Xinyu Wang,Kaikai Yuan,Hairui Fang,Dong Wang
Nitrogen dioxide (NO2), the main component of pollutants in atmospheric environments, causes and exacerbates respiratory diseases, especially during outdoor sports even at the 100 ppb level. Currently, environmental gas detection still faces challenges such as high detection limits, low SNR, and low sensitivity. A NO2 sensor based on In(OH)3-α-Fe2O3–ZnO was prepared using a hydrothermal method, featuring an ultralow detection limit of 82 ppt, an exceptionally high SNR of 574,000, and an ultrahigh sensitivity of 252.25 mV/ppm (100 ppb to 1 ppm). And this sensor exhibits excellent response, selectivity, and repeatability. These excellent sensing characteristics come from the adsorbed oxygen on the surface of the material with the formation of n–n heterojunctions. Additionally, a low-power, portable, and cost-effective environmental monitoring system (named Smart Breath Sentinel (SBS)) was designed to intelligently upgrade ordinary masks. SBS enables real-time wireless environmental gas monitoring with integrated humidity compensation to ensure accurate measurements in high-humidity environments. SBS has already been tested in multiple environments, and the test results have proven the feasibility of SBS. This sensor based on In(OH)3-α-Fe2O3–ZnO demonstrates significant potential for applications aimed at enhancing human safety.
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PubMed
高影响因子
POLYHEDRON
·
2022
·
IF 2.975
Yan-Ling Deng,Wei Li,Chun-Yang Pan
Two new metal hybrid borates , Na[Ni(py) 2 ] 2 ·[(C 4 H 2 O 6 ) 2 B]·H 2 O (py = pyridine) ( 1 ) and [Cu(H 2 O) 2 (1-EI) 4 ]·[B 5 O 6 (OH) 4 ] 2 ·H 2 O (1-EI = 1-ethylimidazole) ( 2 ), have been successfully synthesized. 1 features an interesting structure based on mixed borate-tartrate motifs. Two tartrate anions are condensed with one BO 4 to form the hybrid anionic group [(C 4 H 2 O 6 ) 2 B] 5− . The structure of 2 is composed of [B 5 O 6 (OH) 4 ] − clusters and [Cu(H 2 O) 2 (1-EI) 4 ] 2+ complexes, which exhibits hydrogen-bonded network formed by [B 5 O 6 (OH) 4 ] − clusters. These compounds are further confirmed by FTIR, PXRD and UV–vis. In addition, the catalyst prepared from 2 shows excellent electrocatalytic oxygen reduction reaction (ORR) activity.
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高影响因子
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