Journal of the Taiwan Institute of Chemical Engineers
·
2021
·
IF 5.876
Yanfang Chen,Xuemei Yan,Haifeng Lin,Chao Wang,Jixiang Xu
Background Fe 2+ /H 2 O 2 -based photo-Fenton process is often used in pollutions removal. But, Fe-species related low activity at neutral condition hinders their practical applications. Activation of in situ generated H 2 O 2 for Fenton-like degradation of pollutions through catalysts absences of Fe species is expected. Methods A strip-like benzene and K + co-doped g-C 3 N 4 (KBCN) was constructed by the thermal polymerization of assembly of melamine and 2-aminoterephthalic acid, then post-calcination in LiCl–KCl molten salt, which was then used to degrade Rhodamine B (RhB) and Congo red (CR) via in situ generated H 2 O 2 . Significant findings Benzene and K + co-doping were critical both in increasing charge separation and enhancing the H 2 O 2 production. The yield of H 2 O 2 for KBCN was 57.5 μM in pure water after 60 min irradiation. In the absence of Fe 2+ , the in situ generated H 2 O 2 could subsequently degrade RhB and CR with the formed ·OH. The apparent rate constants of KBCN for RhB and CR degradation were 0.0446 and 0.0497 min −1 , respectively. The advantages of degradation with in situ generated H 2 O 2 in the absence of Fe 2+ can provide a new prospective to the environmental friendly Fenton-like reaction.
✓ 已验证
产品关联
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2021
·Vol. 8
·期 24
·5270-5276
·
IF 6.569
Shiwei Liu,Jiale Chen,Hongping Wu,Hongwei Yu,Zhanggui Hu,Jiyang Wang,Yicheng Wu
The dimensional reduction theory is applied to an A2O–P2O5–Bi2O3 system where P2O5 serves as a binary parent while A2O and Bi2O3 are regarded as dimensional reduction agents. Thus, three novel phosphates ACs5Bi4(PO4)2(P2O7)3 (A = K, Rb and Cs) have been prepared through the high-temperature solution method. Single-crystal X-ray diffraction measurements reveal that they all crystallize in the monoclinic space group P21/c (no. 14) and in their structures, two different kinds of P–O units, i.e. isolated PO4 tetrahedra and P2O7 dimers, are interconnected by Bi–O groups to construct a 3∞[Bi4(PO4)2(P2O7)36−] framework. Note that with the change of cationic size in their structures, the Bi3+ cations also exhibit flexible coordination, i.e. BiO5 and BiO6 polyhedra in KCs5Bi4(PO4)2(P2O7)3 and only BiO6 polyhedra in Cs6Bi4(PO4)2(P2O7)3, suggesting that combining the flexible coordination of Bi3+ cations with phosphates based on dimensional reduction theory is an effective strategy to guide the synthesis of new compounds.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2021
·
IF 6.165
Qingsong Li,Hongyue Guo,Song Lin,Yicong Zhao,Hui Li
To separate and purify diethoxymethane (DEM) from water, in 101.3 kPa and at 303.2 K, the liquid-liquid equilibria (LLE) data of water + DEM + solvents (p-xylene, isopropyl ether, ethyl acetate and isooctyl alcohol) were obtained. The ability to extract DEM from water was evaluated by distribution coefficient (D) and separation coefficient (S). The LLE data were tested by the Bachman and Hand equations with the linear coefficient was greater than 0.99. As well as correlated by the NRTL and UNIQUAC thermodynamic models with the RMSD are no greater than 0.70%.
✓ 已验证
产品关联
DOI
高影响因子
Nano-Micro Letters
·
2021
·Vol. 13
·期 1
·1-14
·
IF 16.419
Su Die,Pei Yi,Liu Li,Liu Zhixiao,Liu Junfang,Yang Min,Wen Jiaxing,Dai Jing,Deng Huiqiu,Cao Guozhong
The unique wire-in-wire structure endows TiO 2 /C nanofibers film with superior mechanical flexibility.
The wire-in-wire TiO 2 /C nanofibers (TiO 2 ww/CN) film shows outstanding electrochemical performances as free-standing anodes for Li/K-ion batteries and full cells.
The TiO 2 ww/CN film shows an extremely high pseudocapacitance contribution ratio in K-ion batteries.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2020
·
IF 2.369
Meng Cheng,Xin Zhao,Aixiang Hao,Wenhao Jiao,Wenge Yang,Yonghong Hu
In this study, the gravimetric method was taken to measure the solubility of the sarafloxacin hydrochloride under atmospheric pressure in methanol, isopropanol, ethanol, 1-butanol, acetonitrile, n-hexane, ethyl acetate, and N,N-dimethylformamide as well as in the (ethyl acetate + acetonitrile), (methanol + n-hexane), and (ethyl acetate + n-hexane) mixtures from 278.15 to 333.15 K. The solubility of sarafloxacin hydrochloride increased with increasing temperature in all the solvents. The solid–liquid solubility equilibrium data in the pure and mixed solvents were in apparent agreement with the solubility predicted by the modified Apelblat model, Buchowski–Ksiazaczak λh model, Redlich–Kister (CNIBS/R-K) model, and Jouyban–Acree model. However, the Redlich–Kister (CNIBS/R-K) model best simulated the experimental solubility results.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2020
·
IF 2.369
Yanbo Liu,Mingyang Chen,Jiawei Lin,Maolin Li,Kang Li,Zhenguo Gao
Experimental solubility data of clopidogrel hydrogen sulfate (form I) in four binary solvents (1-propanol + isopropyl acetate, 2-propanol + isopropyl acetate, 1-butanol + isopropyl acetate, and 2-butanol + isopropyl acetate) was measured by using the laser dynamic method at the temperature ranging from 278.15 to 318.15 K. The experimental results showed that the solubility of clopidogrel hydrogen sulfate (form I) increased with the increasing temperature of all four binary solvent systems at the constant solvent composition, and the isopropyl acetate had a negative effect on the solubilities. The solubilities of clopidogrel hydrogen sulfate (form I) were correlated by the modified Apelblat, λh, and NRTL equations. The results indicated that the three models can predict the experimental values satisfactorily. Moreover, the modified Apelblat equation achieves the best fitting performance compared with other two models through calculating the value of average relative deviation.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2019
·
IF 2.298
Zhongshu Li,Yuli Xue,Xiaoling Tan,Wenqing Li,Shaonan Xu,Ziyan Wang,Jian Wang,Lina Li,Shiding Miao
It is of great importance to separate potassium salts from carbonate-based lakes, especially the low-[K+] but high-[Na+] brine which has been discovered around the world. Here the phase diagram of the quaternary system Na+, K+//Cl–, CO32––H2O was experimentally studied at 298.15 K via the method of isothermal evaporation, and the results corrected the previous diagram reported by Blasdale (J. Am. Chem. Soc.1923, 45, 2935–2946). The type of salts appeared and their solubility during the evaporation, and the density vs composition diagram and the pH values were plotted based on the experimental data. It was found that there were six invariant points, seven univariant curves, and five crystallization fields in the equilibrium phase diagram. To extract single-salt of potassium, certain areas in the Na+, K+//Cl–, CO32––H2O diagram were chosen to be acidified by the compressed CO2, and potassium in the form of KHCO3 was precipitated from the mother solution. The compressed CO2 was able to avoid formation of NaKCO3·6H2O during evaporation of the original system Na+, K+//Cl–, CO32––H2O. Based on experiment data, the region area for potassium salt extraction was determined, and this area was suitable for extracting K+ salts from brines with a [Na+/K+] ratio even lower than 0.44. This strategy opened a new way to recovery of potassium with a maximum yield of 59.88% from the carbonate-chloride-based brine.
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2023
·
IF 6.6
Xingguo Zhang,Baoxue Zhang,Rongrong Mao,Zulong Huang,Keyan Jing,Changchun Jin,Bin Yang,Jun Qi,Manman Yu,Guoyuan Xiong,Yong Hu
Multi-layer active food packing films fabricated with outer layer made of sodium alginate (SA) and inner layer made of k -carrageenan (CAR) and gelatin (GEL) contained with oregano essential oil (OEO) and ZnO nanoparticles (ZnO NPs) were developed through layer-by-layer (LBL) assemble method and characterized in this study. The results of fourier transform infrared (FT-IR) demonstrated OEO, ZnO NPs and SA outer layers were successfully incorporated into the multi-layer film system by hydrogen bonding . ZnO NPs significantly improved the mechanical properties , thermal stability, UV resistance and retention of OEO of the films ( P < 0.05). Scanning electron microscope (SEM) images clearly showed SA/CAR-GEL-OEO film and SA/CAR-GEL-OEO-ZnO NPs film had a bilayer structure. Noteworthy, the multi-layer films exhibited higher OEO retention compared to the mono-layer films, and compensated the negative effect of ZnO NPs and OEO on the light transmittance while enhancing the UV resistance of the films. The multi-layer films exhibited stronger antioxidant and antibacterial activity than mono-layer films. To summarize, the multi-layer films loaded with OEO and ZnO NPs enhanced antioxidant and antibacterial activities and displayed great potential as active packaging for food preservation.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Xiang Li,Xueqian Wang,Li Yuan,Langlang Wang,Yixing Ma,You Wu,Yibing Xie,Rui Cao,Yiran Xiong,Ping Ning
The lengthy processes and cumbersome operations for the separate removal of COS and H 2 S have severely limited the development of blast furnace gas recycling process. CuO exhibits excellent H 2 S oxidation performance, but weak COS hydrolysis performance; in contrast, ZrO 2 shows the opposite trend. However, the functional combination of CuO and ZrO 2 has never been used for simultaneous removal of COS and H 2 S. In this study, a Cu/Zr co-doped K@TiO 2 bifunctional catalyst was tailored to simultaneously remove COS and H 2 S. The combined COS and H 2 S capacity of this catalyst reaches 340.5 mg/g at a low temperature of 60 °C, which is much higher than those of other reported bifunctional catalysts. The microcrystal structure formed by Cu/Zr co-doping increases the specific surface area of the catalyst and promotes the adsorption of COS/H 2 S. Specifically, Zr doping increases the content of moderate basic sites and significantly improves the hydrolysis efficiency of COS. Moreover, Cu doping induces lattice distortion of TiO 2 , while CuO captures 4 s valence electrons of K to form Cu 2 O. These two processes lead to the release of lattice oxygen from TiO 2 and CuO, generating oxygen vacancies and ·O 2 − , which promotes H 2 S oxidation. By proposing a simple route for the bifunctionalization of a desulfurization catalyst, this study drives innovation in both the theory and application of simultaneous removal of COS and H 2 S.
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Qing Huang,Xiaokun Li,Suxiang Feng,Wenfeng Zhuge,Jinyun Peng,Xiaoting Li
Ag nanoparticles functionalized with poly-acid chrome blue K and graphene (Ag-poly-ACBK@Gr) were successfully fabricated on the surface of a glassy carbon electrode using layer-by-layer electropolymerization. The surface structure of the synthesized modified glassy carbon electrode was characterized by scanning electron microscopy. The electrochemical behaviours of diclofenac sodium (DS) at the Ag-poly-ACBK@Gr-modified electrode were investigated by cyclic voltammetry and differential pulse voltammetry. It was found that the prepared sensor exhibited a cathodic peak at 0.78 V with higher peak current response compared to the related modified electrodes. Under optimal conditions, the sensor for the determination of DS exhibits a good linear relationship between the peak current and DS concentration in the range from 0.1 to 40 μM, and the equation is Ip (μA) = 7.23 × 10 3 c (μM) + 3.46 × 10 -2 (R = 0.9955) with the estimated limit of detection of 34.2 nM (S/N = 3). The Ag-poly-ACBK@Gr-modified glassy carbon electrode with high sensitivity and excellent stability and selectivity was successfully applied to detect DS in real drugs and human urine at the recoveries ranging from 99.60 to 101.84%.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2019
·
IF 2.298
Xuzhao Yang,Yun Fang
In this work, the experimental densities and dynamic viscosities of binary mixtures of ammonium-based room-temperature asymmetrical Gemini ionic liquids (GILs) 1-trimethylammonium-3-(pyridinium) propane bisdicyanamide ([N111C3Py][DCA]2) and 1-trimethylammonium-3-(1-methylpiperidinium) propane bisdicyanamide ([N111C3MPi][DCA]2) with methanol (MeOH) or ethanol (EtOH) over the entire concentration range were, respectively, determined experimentally at temperatures of (293.15, 303.15, 313.15, 323.15, and 333.15) K in the atmospheric pressure of 0.1 MPa. The excess molar volumes (VmE), excess dynamic viscosities (Δη), and excess Gibbs energy of activation (ΔG*E) of the mixtures were evaluated according to the experimental ρ and η values of pure [N111C3Py][DCA]2, [N111C3MPi][DCA]2, MeOH, EtOH, and their binary solutions at the investigated temperatures and pressure. The change of VmE and Δη were correlated with the Redlich–Kister-type expression and optimal fitting parameters were evaluated. It was observed that values of VmE and Δη are negative deviations from ideal behaviors for the four binary systems. With the mole fraction of alcohol decreasing, these excess properties for these mixtures exist as more negative deviations from ideal solutions, until minimum excess values are reached. Negative values of VmE and Δη for the four binary solutions indicate stronger interactions between GIL and alcohol molecules compared to the pure components and better packing owing to the differences in size and shape of the investigated molecules. Positive values of ΔG*E can be ascribed to the size effect of mixing components. Meanwhile, the dependence of these excess properties on temperature for all binary systems indicates that the temperature has a great influence on intermolecular interactions in the studied mixtures.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2019
·
IF 7.015
Chunqing Cai,Fan Yang,Zhigang Zhao,Qiuxia Liao,Ruixi Bai,Wanghuan Guo,Peng Chen,Yang Zhang,Hao Zhang
This paper first reports on the high-selective separation and recovery of Li(I) from Na(I) and K(I) using the polymer inclusion membrane (PIM) system containing both thenoyltrifluoroacetone (TTA) and trioctylphosphine oxide (TOPO) as the carrier molecules, and cellulose triacetate (CTA) as the base polymer. To characterize the PIM, we used Fourier Transform infrared (FT-IR) spectroscopy, scanning election microscopy (SEM) and thermogravimetric analysis (TGA). The optimized results of this work showed that initial flux ( J 0 ) of Li(I) that was as high as 1.04 × 10 −2 mol m −2 h −1 , corresponding to permeability ( P ) of 3.62 × 10 −3 m h −1 , were recorded using the PIM composed of 50 wt% CTA and 26.74 wt% TTA + 23.26 wt% TOPO from a feed phase containing Li(I), Na(I) and K(I) in an alkaline chloride solution into an acceptor phase containing 0.1 M HCl. Li(I) was transported successfully to the acceptor phase but Na(I) and K(I) barely passed in the first 20 h. The separation factor ( S F ) of Li(I) over the Na(I) and K(I) respectively ( S F L i ( I ) / N a ( I ) ≒ 54.25, S F L i ( I ) / k ( I ) ≒ 50.60) demonstrated that Li(I) can be high-selectively separated. It is expected that this membrane can be applied for selective recovery of Li(I) from salt lakes or sea water that contains significant concentrations of Na(I) and K(I).
✓ 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）