JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
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2025
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IF 1.6
Huang Xuanhao,Liu Xingyue,Wang Yiting,Wang Zhuang,Yu Qiao,Zhou Hang,Li Rui,Ding Songdong
As one of the main radiolysis products of tri-isoamyl phosphate (TiAP) in the spent fuel reprocessing process, di-isoamyl phosphate (DiAP) can lead to a significant deterioration of TiAP in extraction performance. In this context, the effect of DiAP on the extraction and stripping behaviors of U(VI), Th(IV), and Zr(IV) for 1.1 mol/L TiAP/ n -dodecane organic phase was investigated for the first time. It has been shown that DiAP can increase the ability of TiAP to extract metal ions and inhibit the stripping, as well as promote the formation of interfacial deposition. Combined with the results of DLS, FT-IR, 31 P NMR, ESI-MS and elemental analysis, the role of DiAP in the formation of interfacial deposition was also elucidated.
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FOOD CHEMISTRY
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2024
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IF 8.5
Xiaomin Pang,Yongfeng Chen,Rui Gao,Yufeng Sun,Xuguang Qiao,Zhixiang Xu
Herein, a novel electrochemical sensor based on zirconium-doped cobalt oxyhydroxide (ZrCoOOH) was proposed for highly sensitive non-enzymatic determination of malathion (MAL). The doping of Zr can improve the electrical conductivity of CoOOH, of which the transfer resistance was reduced from 241.1 Ω to 140.2 Ω. Furthermore, the X-ray photoelectron spectroscopy confirmed that part of Co 2+ was converted to Co 3+ due to the introduction of Zr. The Co 3+ in ZrCoOOH could react with MAL to form Co 2+ , which enhanced the electrooxidation current of Co 2+ . Therefore, the peak current of Co 2+ was served as detection probe for MAL. Under optimal conditions, the developed sensor established the linear relationship for MAL in the concentration range of 0.001–10.0 μM with a low limit of detection (0.64 nM). The constructed sensor was employed to detect MAL in food samples (peach, kiwi fruit, spinach and tomato), verifying the accuracy and practicability of the sensor.
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PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
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2024
·Vol. 48
·期 38
·16734-16741
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IF 2.7
Xiaoshuai Zhang,Chengrun Liu,Xiaoyan Yu,Zixuan Wang,Panlai Li,Yawei Shi,Zhijun Wang
Although there has been a considerable amount of research on near-infrared (NIR) phosphor-converted light-emitting diodes (pc-LEDs), narrow-band emission and poor thermal stability continue to be problems associated with NIR phosphors. To solve these problems, La3ZrxSn1−xGa5O14:0.015Cr3+ phosphors with ultra-broadband NIR emission were obtained by partially replacing Sn4+ with Zr4+ through a strategy of multiple lattice site occupancy and cationic modulation, which altered the crystal field environment of the material. The spectrum was broadened, and the luminous intensity and thermal stability of the material were successfully improved. Finally, the phosphor was combined with a blue LED chip package, and the broad prospects of the phosphor in the NIR application field were proved by experiments of level detection, biomedical imaging, and night vision monitoring.
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ACS Catalysis
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2019
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IF 12.221
Wenhui Li,Guanghui Zhang,Xiao Jiang,Yi Liu,Jie Zhu,Fanshu Ding,Zhongmin Liu,Xinwen Guo,Chunshan Song
Cobalt catalysts supported on TiO2 with different crystal forms (anatase and rutile) differ sharply in CO2 conversion and product selectivity for CO2 hydrogenation. The Co/rutile-TiO2 catalyst selectively catalyzed CO2 hydrogenation to CH4, while CO is the main product on the Co/anatase-TiO2 catalyst. In situ DRIFT (diffuse reflectance infrared Fourier transform) results have partially revealed the reaction pathway of CO2 hydrogenation on these two catalysts. On Co/rutile-TiO2, the reaction proceeds through the key intermediate formate species, which is further converted to CH4. Differently, the reaction on Co/anatase-TiO2 undergoes CO2 → *CO, which desorbs to form gas-phase CO instead of subsequent hydrogenation. The strongly bonded *CO is required to enhance the subsequent hydrogenation. By simply changing the calcination temperature of anatase TiO2, the product selectivity can be tuned from CO to CH4 with a significant increase in CO2 conversion due to the surface phase transition of the anatase to the rutile phase. The addition of Zr, K, and Cs further improves the CO, CO2, and H2 adsorption in both the capacity and strength over anatase- and rutile-supported catalysts. The Zr modification makes the reaction pathway over anatase-supported catalyst proceed via the intermediate formate species and enables the subsequent hydrogenation to CH4. In addition, the surface C/H ratio increases significantly in the presence of promoters (unpromoted < Zr-promoted < K-Zr-promoted ∼ Cs-Zr-promoted), which leads to the highest C2+ selectivity of 17% with 70% CO2 conversion over K-Zr-Co/anatase-TiO2 catalyst. These results reveal mechanistic insights into how the product distribution of Co/TiO2 catalysts can be manipulated through adjusting the adsorption performance and surface C/H ratio.
研究领域:
催化化学
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材料化学
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多相催化
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CO2利用
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表面科学
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JOURNAL OF CATALYSIS
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2020
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IF 7.888
Junnan Wei,Ting Wang,Huai Liu,Yiqiang Liu,Xing Tang,Yong Sun,Xianhai Zeng,Tingzhou Lei,Shijie Liu,Lu Lin
It is highly desirable but challenging to develop a one-pot process for the transformation of fructose into 2,5-bis(isopropoxymethyl)furan (BPMF), a promising biofuel component, because a cascade sequence involving dehydration, reduction, and etherification requires multifunctional acid catalysts. Herein, we propose a facile and firm assembly of Zr/2-methylimidazole (2-MeIM) coordination polymer over USY zeolite (USY@ZrCP) through N-Al bonds formed by the condensation of 2-MeIM and the hydroxyls on USY surface at room temperature. USY@ZrCP possesses an abundance of strong Lewis acid sites with suitable amount of Bronsted acid sites, which are mainly attributed to the highly dispersed Zr(IV) species and the hydroxyls over USY@ZrCP, respectively. Unexpectedly, USY@ZrCP could offer BPMF yield up to 82.6% from fructose in isopropanol by the integration of dehydration, Meerwein–Ponndorf–Verley reduction and etherification in a one-pot strategy. This work proposes a novel approach to prepare highly efficient and robust solid acid catalyst for the catalytic valorization of biomass-derived carbohydrates and their derivatives.
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FUEL
·
2024
·
IF 6.7
Shenghua Liu,Xiaoqian Feng,JinXin Xu,Jiaxin Wang,Yonghua Zhao,Huan Wang,Qijian Zhang
CO 2 methanation is a potential way for the re-utilization of CO 2 . MOF derivations are promising candidates for commonly used Ni-based catalysts due to their high porosity and confinement effect. Herein, we systematically investigated the synthetic pathway of Zr-MOF-derived Ni-based catalysts. It is found that Ce addition can effectively improve the thermostability, specific surface area and Ni dispersion of the derived Ni/CeO 2 -ZrO 2 catalyst. It can also enhance the adsorption of CO 2 by the generation of O v and improve CO 2 methanation activity. Calcination the MOF in inert gas leads to the formation of CNTs and amorphous carbon. Amorphous carbon results in less interaction between NiO and CeO 2 as well as low amount of O v , leading to lower catalytic activity than the catalyst calcinated in air. Compared with impregnation method, one-pot solvothermal method leads to much higher specific surface area for both MOF and derived oxides. It also benefits the uniform dispersion of NiO and higher amount of O v . Therefore, it shows better catalytic activity and is proved to be a better method for Ni introduction. In the catalysts we discussed, St-ZrCeNi (Ce addition, one-pot solvothermal method, calcination in air) shows the highest CO 2 conversion and good CH 4 selectivity due to its high specific area and more O v . It also shows good stability (>50 h) and good intrinsic activity. This research reveals the roles of several important factors in the synthesis process of Zr-MOF derived Ni-based catalysts. It also gives new insights for the design and synthesis for other MOF derived catalysts.
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CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Yingquan Chen,Rui Li,Yan Zhang,Yanping Long,Na Liu,Haijun Xia,Xiong Luo,Bin Meng
A series of lead-free perovskite-structured high-entropy dielectric ceramics with a composition of (La 0.25 Sr 0.25 Ba 0.25 Na 0.25 )(Ti 0.5 Me 0.5 )O 3 (Me = Sn, Zr, Hf) were designed by doping at both the A and B sites. Specifically, these ceramics were prepared via a solid-state reaction method combined with conventional sintering at 1500 ° C for 10 h. All high-entropy ceramics were consisted of a perovskite-structured single solid solution with an average grain size of 2.78–3.85 μm. Of the three samples, (La 0.25 Sr 0.25 Ba 0.25 Na 0.25 )(Ti 0.5 Sn 0.5 )O 3 exhibited the highest dielectric constant, which remained stable from in 25–312 ° C. All three groups of high-entropy ceramics showed typical relaxor behaviour. The discharge energy density ( W d = 0.31 J/cm 3 ), energy storage efficiency ( η = 90.88%) and breakdown strength ( BDS = 300 kV/cm) of (La 0.25 Sr 0.25 Ba 0.25 Na 0.25 )(Ti 0.5 Sn 0.5 )O 3 were much higher than those of BaTiO 3 ( W d = 0.08 J/cm 3 , η = 46.09%, BDS = 30 kV/cm) and other reported lead-free dielectric ceramics. These results demonstrate that high-entropy (La 0.25 Sr 0.25 Ba 0.25 Na 0.25 )(Ti 0.5 Me 0.5 )O 3 ceramics are promising new candidates for high-performance, lead-free dielectric ceramics.
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FOOD CHEMISTRY
·
2026
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IF 10.4
Chunhua Li,Xieyang Zhang,Zihao Meng,Yafei Li,Zhonghong Li
Achieving the integration of detection and removal for Cu(II) and Cr(VI). • Cr(VI) is captured by amino groups of MDS and partially reduced to Cr(III). • Pyridine and amino of aerogel provided coordination sites to capture Cu(II). • Biocompatible aerogel has low cytotoxicity for L929 cells. • Detection and removal have no obvious effect on the quality of apple juice. Heavy metal pollution in food, particularly Cu(II) and Cr(VI), poses a significant threat to human health. A bifunctional composite aerogel (MDS) is successfully synthesized, immobilizing a 5,5′-diamino-2,2′-bipyridine (dabpy) post-modified MOF-808 within a sodium alginate (SA) aerogel for sensitive detection and efficient removal of heavy metal ions in apple juice. Mechanism studies reveal that pyridinic N and NH 2 in MDS display a high affinity for Cu(II), while Cr(VI) exhibits an electrostatic attraction to the protonated NH 2 . The interaction process triggers electron transfer, which leads to fluorescence quenching. MDS aerogel shows detection of Cu(II) and Cr(VI) with low limits of detection, and adsorption capacities of 354.91 mg/g for Cu(II) and 258.62 mg/g for Cr(VI). The MDS aerogel removal efficiency exceeded 94% in apple juice. In vitro cytotoxicity assays indicate low cytotoxicity of MDS. This work offers a potential bifunctional platform for heavy-metal sensing and removal in food matrices. Download: Download high-res image (135KB) Download: Download full-size image
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JOURNAL OF SEPARATION SCIENCE
·
2021
·Vol. 44
·期 10
·2113-2120
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IF 3.645
Suling Zhang,Ziluo Hua,Hongting Zhao,Weixuan Yao,Yuanzhao Wu,Defeng Fu,Jiancong Sun
In this work, defective Zr-based metal–organic framework was successfully synthesized and evaluated as a dispersive micro-solid-phase extraction sorbent for efficient preconcentration and determination of fungicides in complex water samples. The defective Zr-based metal–organic framework crystal with increased adsorption capacity was successfully synthesized by employing formic acid as the modulator. The extraction conditions, including the pH, extraction time, desorption solvent and desorption time, were comprehensively investigated. Under optimum conditions, it was found that dispersive micro-solid-phase extraction method, coupled with liquid chromatography/mass spectrometry, exhibited a good linear relationship with correlation coefficients greater than 0.9980. The relative standard deviations of inter-day and intra-day precisions ranged from 2.6 to 9.2% and the limits of detection ranged from 0.004 to 0.036 μg/L. These merits, combined with their satisfactory recoveries (>80%), suggested the great potential of defective Zr-based metal–organic framework as a new adsorbent for efficient extraction of trace fungicides. This method exhibits good application potential for the pretreatment of fungicides from environmental water samples.
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FUEL
·
2025
·
IF 7.5
Jinxue He,Chao Huang,Likun Yang,Dan Liu,Hu Li,Aijing Ma,Shiguang Pan,Angui Zhang,Haoxuan Yu,Jianzhou Gui
Lewis acid imidazolium-based ionic liquids (ILs) with inorganic anions of [Al 2 Cl 7 ] - , [Al 2 Ti x Cl 7+4x ] - , [Al 2 Zr x Cl 7+4x ] - , and [Al 2 Ga x Cl 7+3x ] - have been synthesized in good yields and used as the catalysts for the polymerization of Fischer-Tropsch (FT) mixed α-olefins. The poly alpha-olefins (PAO) products have been tuned through various bimetallic Lewis-acid ionic liquids (ILs). A high PAO yield of 95 % and excellent selectivity to trimers & tetramers of 65 % were achieved at 100 °C for 120 min using 3 wt% [Bmim][Al 2 Ga 0.1 Cl 7.3 ] as the catalyst. The bimetallic Lewis acid ILs are easily separated from the reaction mixture and recycled with good stability. Molecular orbital studies show the LUMOs of IL anions have changed from Al to the other metal site (Ga/Ti/Zr), leading to a weakened Lewis acidity, finally making the PAO structure tunable. Notably, the synthesis of PAO products by bimetallic ILs from Fischer-Tropsch (FT) mixed α-olefins, instead of 1-decene from ethylene production, was demonstrated to be effective, ensuring a green, low-cost, and recyclable technology industrially. Furthermore, the IL catalysts demonstrated inherent safety and environmental compatibility, positioning them as promising alternatives to conventional BF 3 catalysts.
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Corrosion Communications
·
2021
·
IF 0
Shuaihang Qiu,Huimin Xiang,Fu-Zhi Dai,Hailong Wang,Yanchun Zhou
The protecting materials of reference electrode with good corrosion resistance to molten salts play vital roles in realizing smelting of refractory and rare earth metals through fused salts electrolysis. BaZrO 3 has been considered as a candidate protecting material of reference electrode for its good chemical stability and high-temperature corrosion resistance. However, the unsatisfactory corrosion resistance to molten salts hinders its practical application. In order to enhance the corrosion resistance to molten salts, three perovskite structured high-entropy oxides HE (Ca,Sr,Ba) TM O 3 including (Ca,Sr,Ba)(Zr,Hf)O 3 , (Ca,Sr,Ba)(Zr,Ta)O 3 and (Ca,Sr,Ba)(Zr,Hf,Ta)O 3 , were designed and prepared in this work. The as-prepared HE (Ca,Sr,Ba)(Zr,Hf)O 3 and (Ca,Sr,Ba)(Zr,Hf,Ta)O 3 ceramics are single-phase, while the as-prepared HE (Ca,Sr,Ba)(Zr,Ta)O 3 ceramic contains 11.6 vol.% of (Ca,Sr,Ba) 2 Ta 2 O 7 . These HE (Ca,Sr,Ba) TM O 3 ceramics possess better corrosion resistance to molten NaCl-KCl salts than BaZrO 3 , among which (Ca,Sr,Ba)(Zr,Hf,Ta)O 3 shows the best corrosion resistance to molten NaCl-KCl salts. The mass loss per unite area of HE (Ca,Sr,Ba)(Zr,Hf,Ta)O 3 after corrosion by molten NaCl-KCl salts at 800 °C for 8 h is mere 2.6×10 −6 g/mm 2 which is ca . 1/60 of that of BaZrO 3 (∼1.7×10 −4 g/mm 2 ), and its surface after corrosion is plain and smooth without any new phase detectable after corrosion. It also exhibits better corrosion resistance to molten NaF-KF salts than BaZrO 3 . The mass loss per unite area after corrosion by molten NaF-KF salts at 800 °C for 8 h is only 2.9×10 −5 g/mm 2 which is smaller than that of BaZrO 3 (3.6×10 −5 g/mm 2 ), the corrosion caused by molten NaF-KF salts only occurs on the surface and the thickness of the corrosion layer is mere ∼8 µm, being less than 1/10 of that of BaZrO 3 (∼100 µm). These results indicate that the three HE (Ca,Sr,Ba) TM O 3 , especially (Ca,Sr,Ba)(Zr,Hf,Ta)O 3 , are promising as protecting materials of reference electrode for the smelting of refractory and rare earth metals through fused salts electrolysis.
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MICROCHEMICAL JOURNAL
·
2018
·
IF 2.746
Guihua Gao,Yanyan Xing,Tingting Liu,Jian Wang,Xiaohong Hou
Four water stable metal-organic frameworks (MOFs), MIL-101(Cr), MIL-100(Fe), MIL-53(Al), and UiO-66(Zr), were used as adsorbents for concentration of four androgens and progestogens from water. The adsorption abilities of target analytes on the four MOFs were investigated by experimental and molecular simulation strategies, and UiO-66(Zr) was ultimately selected as the sorbent to develop a porous membrane protected micro-solid-phase extraction (μ-SPE) method for simultaneous extraction androgens and progestogens in environmental water samples followed by LC-MS/MS detection. Several variables affecting the extraction efficiency were systematically investigated, including pH, salt concentration, extraction time, kind of desorption solvent, and desorption time. Under the optimized conditions, excellent linearity was obtained in the range of 20.32–2032 ng/L for T, 10.24–1024 ng/L for P, 7.624–762.4 ng/L for TP , and 8.376–837.6 ng/L for MPA . Limits of detection (LODs) and limits of quantification (LOQs) were 10 ng/L and 20 ng/L for T, 4.0 ng/L and 10 ng/L for P, 2.0 ng/L and 7.0 ng/L for TP, and 3.0 ng/L and 8.0 ng/L for MPA, respectively. The recoveries were ranged from 80.5% to 102.4%. Furthermore, the μ-SPE device could be used for at least 10 extractions (RSD < 10.0%). Meanwhile, comparison was made with solid-phase extraction, and the developed method was demonstrated to be a convenient and eco-friendly pretreatment method for water samples.
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