Frontiers in Chemistry
·
2018
·
IF 4.155
Jiang Zi-Min,Xu Ting-Ting,Yan Cong-Cong,Ma Cai-Yun,Dai Shu-Ge
Here, we report our finding in the fabrication of novel porous urchin-like Ni2/3Co1/3(CO3)1/2(OH)·0. 11H2O (denoted as NC) nanomaterial composed of numerous nanoneedles through an one-step hydrothermal method, which deliveres a high specific capacity of 318 C g−1 at a current density of 1 A g−1. Moreover, an architectural composite electrode consisting of the porous NC nanoneedles wrapped by reduced graphene oxide (rGO) nanosheets exhibits large specific capacity (431 C g−1 at 1 A g−1), high rate capability and long cycling life (94% capacity retention after 5,000 cycles at 20 A g−1). The presence of rGO in the composite electrode greatly improves the electronic conductivity, providing efficient current collection for fast energy storage.
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DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2025
·
IF 3.9
Ma Junjie,Li Wei,Yang Deyi,Liu Zheng,Cao Yuyuan,Wang Shaocong,Han Guo-Cheng,Chen Qizhi
N-RGO/Na 3 V 2 (PO 4 ) 3 dual-modified Na 2 Fe 0.6 Mn 0.4 PO 4 F composites were prepared by sol–gel method combined with high-temperature calcination at 625 °C. Electrochemical tests show that the initial discharge specific capacity of N-RGO/Na 3 V 2 (PO 4 ) 3 -modified Na 2 Fe 0.6 Mn 0.4 PO 4 F composites is 149.27 mAh·g −1 at a current density of 0.05 C, and the discharge specific capacity can be maintained at approximately 101.89 mAh·g −1 after 100 cycles. This accounts for 68.26% of its initial discharge specific capacity. Rate performance tests showed that after cycling the current density back to 0.2 C, it was still able to recover to a discharge specific capacity close to 119 mAh·g −1 . At the same time, the interfacial properties of the N-RGO/Na 3 V 2 (PO 4 ) 3 dual-modified Na 2 Fe 0.6 Mn 0.4 PO 4 F composites were studied, and it was found that the capacity attenuation was due to irreversible structural changes such as agglomerated block cracking and structural collapse during multiple cycles, as well as the gradual thickening of the SEI film with the increase in cycle times. This study aims to apply N-RGO/Na 3 V 2 (PO 4 ) 3 dual-modified Na 2 Fe 0.6 Mn 0.4 PO 4 F composites to cathode materials for sodium-ion batteries, providing a theoretical basis for the development of fluorinated poly-anion compounds.
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DOI
高影响因子
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
·
2014
·
IF 2.235
Meng Lin,Xiaoke Hu,Weiwei Chen,Hui Wang,Chuanyuan Wang
A phenanthrene (PHE) degrading bacterium strain BZ-3 was isolated from the crude oil contaminated soil in Binzhou, China. The isolate was identified as Pseudomonas sp. BZ-3 on the basis of 16S rRNA gene sequence. Various experiments were conducted to investigate the effect of pH, salinity and PHE concentration on the degradation efficiency of PHE. The degradation efficiency and degradation metabolites of PHE were detected by using GC–MS and HPLC-MS analyses. The strain BZ-3 could degrade 75% of PHE at an initial concentration of 50 mg/L under 20 g/L salinity in 7 days. PHE degradation kinetics was estimated in a first-order degradation rate model and the rate coefficient was calculated as 0.108 d −1 . On the basis of the identified degradation metabolites, the strain BZ-3 could degrade PHE in the salicylate metabolic pathway. In a mixture system consisting of PHE and other PAHs including naphthalene (NA), anthracene (ANTH), and pyrene (PYR), the strain BZ-3 showed an efficiently degradation capability. Further study showed that the strain BZ-3 could also use NA, ANTH, PYR, xylene, 1-hydroxy-2-naphthoic acid, and hexane as the sole carbon and energy source, but did not grow on nitrobenzene-containing medium.
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INORGANIC CHEMISTRY COMMUNICATIONS
·
2022
·
IF 3.428
Shangyu Li,Rui Liu,Xiao Han,Chunhua Ge,Xiangdong Zhang
In this paper, (3-aminophenyl)boronic acid pinacol ester was employed as a raw material to react with different aromatic aldehydes. Then diethyl phosphite was introduced to produce the addition reaction of carbon nitrogen double bond to prepare four diethyl α-aminophosphonate derivatives, which were diethyl[phenyl({[3-(tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]amino})methyl]phosphonate (BNP 1 ), diethyl[(4-methoxyphenyl)({[3-(tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]amino})methyl]phosphonate (BNP 2 ), diethyl [(4-nitrophenyl)({[3-(tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]amino})methyl]phosphonate (BNP 3 ), and diethyl[(4-methylphenyl)({[3-(tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]amino})methyl]phosphonate (BNP 4 ). The prepared compounds were characterized by 1 H and 13 C NMR, MS, FT-IR and PL (Photoluminescence Spectroscopy). Four derivatives perform high thermal stability. In addition, it exhibits good friction properties for rapeseed oil (RSO) at low concentrations. Compared with BNP 1 , BNP 2 and BNP 4 , BNP 3 exhibits best on friction-reducing and anti-wear performances attributed to the strong electron withdrawing ability of the nitro group in BNP 3 , which is also reflected in the solid-state fluorescence. Therefore, the four diethyl α-aminophosphonate derivatives have potential industrial applications as lubricant additives .
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CHEMICAL ENGINEERING RESEARCH & DESIGN
·
2022
·
IF 4.119
Jingjing Sun,Shangqing Chen,Junfeng Wang,Yi Nie
The reduce of the silicon concentration to low level (<5 mg·L −1 ) from the reverse osmosis brine wastewater is challenging and desirable for the maintain the membrane life and performance, as well as the wastewater treatment costs. This work focuses on the removal of silicon from the reverse osmosis brine wastewater by adding FeCl 3 into the plant wastewater for simultaneous Fe(OH) 3 formation and silicon adsorption. The effects of pH, FeCl 3 dosing concentration, reaction time, and temperature on the silicon removal ratio were investigated. It was demonstrated that the silicon removal ratio could reach up to 94% and its residual concentration was 3.2 mg·L −1 , which met the require of water quality in the reverse osmosis system. These results showed that Fe(OH) 3 could effectively be formed by adding FeCl 3 and realize the efficient silicon removal from the reverse osmosis brine wastewater, even when chloride ion (Cl - ), sulfate anion ( S O 4 2 - ) and nitrate ion ( N O 3 - ) were present. Moreover, the adsorption thermodynamics, kinetics and isotherms during the process of the adsorption of silicon from the wastewater by Fe(OH) 3 were studied. The calculated adsorption capacity of silicon could reach 612.74 mg·g −1 , which was much larger than those of reported adsorbents. These results showed that the silicon removal process was spontaneously exothermic and mainly controlled by the physical adsorption and the monomolecular layer adsorption. This simple and cost-effective method could be used for the silicon removal from different kinds of Si-containing wastewater.
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高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Yuan Liu,Junxia Wang,Jin Wang,Die Liu,Kunqi Liu,Long Kang,Tongmin Zhang
Composite ceramics, which integrate the advantages of multiple crystal structures, are considered promising candidates for nuclear waste forms capable of simultaneously immobilizing various radionuclides. In this study, a series of 0.4Sr 0.5 Zr 2 (PO 4 ) 3 –0.6Ce 1- x Nd x PO 4 composite ceramics were designed to co-immobilize the simulated fission product Sr and actinide surrogates Ce and Nd. These composite ceramics exhibited homogeneous phase distribution and high densification. Among them, the irradiation-induced damage in the representative sample, 0.4Sr 0.5 Zr 2 (PO 4 ) 3 –0.6Ce 0.6 Nd 0.4 PO 4 composite ceramic, was systematically evaluated under both He 2+ and Xe 20+ irradiation. After He 2+ irradiation, the crystallinity of the irradiated layer was retained despite the disruption of Raman-active bonding groups by point defects. Notably, the Ce 0.6 Nd 0.4 PO 4 phase exhibited significantly higher resistance to He 2+ irradiation than the Sr 0.5 Zr 2 (PO 4 ) 3 phase, as confirmed by GIXRD patterns and geometric phase analysis (GPA). Furthermore, fragmentation of Ce 0.6 Nd 0.4 PO 4 grains was observed, which was attributed to defect accumulation, the thermal spike effect, and the thermal expansion mismatch. Following Xe 20+ irradiation, the irradiated layer of the composite ceramic exhibited reduced crystallinity without complete amorphization, while the Raman-active bonding groups remained largely intact. Additionally, pore formation at grain boundaries was likely caused by the segregation and accumulation of irradiation-induced defects.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xiaomeng Ni,Jingjing Liu,Fangxian Xu,Jing Zhang,Sai Jiang,Bijun Fang,Huafei Guo,Ningyi Yuan,Jianning Ding,Shuai Zhang
Doping the light absorber layer of antimony chalcogenides with extrinsic ions is an effective approach for improving their photovoltaic quality. These dopant ions generally reside at positions other than the crystal lattice or form an alloy (e.g., AgSb(S,Se) 3 ) with a poor device performance. Therefore, incorporating such ions into an antimony chalcogenide lattice such that there is a positive influence on device quality would be highly useful. Herein, doping of Nd 3+ for Sb 2 (S,Se) 3 is carried out via a modified hydrothermal deposition process. Notably, these ions are incorporated into the crystal lattice and migrate to the CdS/Sb 2 (S,Se) 3 interface after doping, which are characterized using X-ray diffraction, X-ray photoelectron spectroscopy, and time-of-flight secondary ion mass spectrometry. Nd 3+ doping produces benign effects on the crystal orientation, film morphology, optoelectronic properties, and defect passivation of the Sb 2 (S,Se) 3 films. Consequently, all the photoelectrical parameters of Sb 2 (S,Se) 3 solar cells doped with Nd 3+ are enhanced, delivering a remarkable efficiency of 8.24 %. Furthermore, the best device stored in air only shows a slight decrease in efficiency in the 2400-h aging test. Overall, this study provides an effective doping strategy to improve the photovoltaic quality of Sb 2 (S,Se) 3 films.
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高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2024
·
IF 4.4
Yujuan Sun,Jun Wu,Xiashi Zhu
A novel poly[1-vinyl-3-benzyltriethylammonium proline ionic liquid] membrane(PIL/PVDF membrane) were prepared through the blending poly[1-vinyl-3-benzyltriethylammonium proline ionic liquid](P[Pro][TEA])-poly(vinylidene fluoride)(PVDF) phase inversion method. A series of PIL/PVDF membrane characterization (NMR, FT-IR, SEM, EDS, and XPS) was performed. The properties of PIL/PVDF membrane (contact angle, water flux, mechanical properties, thermal stability,electric charge property, specific surface area and pore diameter) were evaluated. A solid phase extraction − high performance liquid chromatography (SPE-HPLC) method for separation/analysis of quercetin was developed. The factors affecting the adsorption and elution (time, dosage, pH etc.) were investigated. Under optimal conditions, the method has been successfully applied to the separation/analysis of quercetin in tea, and the recovery rates are satisfactory (86.4–106.0 %). The concentration factor of quercetin was 10. The adsorption capacity of PIL/PVDF membrane towards quercetin was 22.1 mg g −1 . The extraction mechanism was preliminarily discussed. The established SPE-HPLC method was simple and reliable, which provided application prospects for extraction and detection of quercetin.
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Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Yu Fu,Fangbo Zhao,Yingzheng Liu,Ruiqi Li,Hongxu Chen,Liu Yang,Zhiguo Li,Mingcong Wu,Dan Wang
In this research, we introduce a novel and efficient approach for enhancing both the antibacterial efficacy and resistance to protein fouling of nanofiltration (NF) membranes, marking the first report of a method capable of concurrently addressing these critical membrane performance parameters. After traditional interface polymerization (IP), NF membranes were post-treated by the antibacterial N-(3-Aminopropyl)-imidazole (ANPI) which can be grafted on the membrane by its amino group reacting with rest acyl chloride in IP on the surface. After parameter optimization of the ANPI concentration, the modified membrane NF-12 demonstrated up to 99% antibacterial activity against two representative pathogens, Escherichia coli and Staphylococcus aureus . Except for this, due to the zwitterionic effect, the modified membrane achieved a remarkable 68.7% enhancement in water flux and the recovery rate of BSA cyclic pollution reached 97.5%. From mechanism analysis, it can be proposed that the post-grafted ANPI brought antibacterial properties to the NF membrane, which was able to kill bacteria attached to the membrane surfaces. Also, the imidazole protonation introduced positive charges to the NF membrane surface, mixing with negative charges produced by acyl chloride hydration, which produced the zwitterionic effect and facilitated the formation of a robust hydrophilic hydration layer, thereby significantly diminishing the adhesion of contaminants.
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高影响因子
Nature Catalysis
·
2023
·
IF 37.8
Sun Kai,Dong Juncai,Sun Hao,Wang Xingdong,Fang Jinjie,Zhuang Zhongbin,Tian Shubo,Sun Xiaoming
Metal-nitrogen-doped carbon (M-N-C) catalysts are promising platinum group metals alternatives for fuel cell cathodes; however, their randomly formed, unpredictable coordinations complicate any structure–property investigation and lead to low active site density. Here we achieve dense and well-defined cobalt sites on the surfaces of Co(CN) 3 microcrystals, which are identified by single-crystal X-ray diffraction and X-ray absorption spectroscopy. In situ infrared spectroscopy and density functional theory calculations elucidate that the high oxygen reduction reaction performance (half-wave potential is 0.90 V versus RHE) of the cubic Co(CN) 3 is due to its tailored coordination environment that optimizes *OH desorption. The cyanide linkage with minimized spacing between cobalt atoms maximizes active sites’ spatial density, which boosts the anion-exchange membrane fuel cell peak power density to 1.67 W cm −2 . The microcrystals with well-defined coordination structures can be used as Co-N-C analogues for their structure–property relationship investigations.
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DOI
高影响因子
Data in Brief
·
2015
·
IF 0
Xinghao Lin,Yanming Zhao,Youzhong Dong,Quan Kuang
This data article contains the synthesis and structure information of a new Fe-base sodium metaphosphate compound, which is related to the research article entitled ‘Synthesis, structural, magnetic and sodium deinsertion/insertion properties of a sodium ferrous metaphosphate, NaFe(PO 3 ) 3 ’ by Lin et al. [1] . The research article has reported a new Fe-base metaphosphate compound NaFe(PO 3 ) 3 , which is discovered during the exploration of the new potential electrode materials for sodium-ion batteries. In this data article, the synthesized process of this metaphosphate compound and the morphology of the obtained sample will be provided. The high-power XRD Rietveld refinement is applied to determine the crystal structure of this metaphosphate compound and the refinement result including the main refinement parameters, atomic coordinate and some important lattace parameters are stored in the cif file. Also, the refined structure has be evaluated by checkcif report and the result is also provided as the supplementary materials.
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DOI
GREEN CHEMISTRY
·
2024
·Vol. 26
·期 20
·10383-10389
·
IF 9.3
Haibo Zhu,Ting Zhong,Liu Yang,Yajing Shen,Qiangwen Fan,Zhanggao Le,Zongbo Xie
The photocatalytic activation of oxygen molecules (O2) is an environmentally friendly and sustainable alternative to substituted benzofuran-3(2H)-one synthesis. Herein, lead-free Cs2AgBiBr6 nanocrystals were used to activate O2 efficiently and selectively for the photocatalytic transformation of 4-hydroxycoumarins to functional 2-hydroxy-benzofuran-3(2H)-ones under an air atmosphere. Polyfunctionalized benzofuran-3(2H)-ones with a quaternary carbon center can be selectively obtained in moderate to good yields at room temperature via one-pot synthesis. Perovskite crystal structures have significant influence on photocatalytic activity due to the different charge separation abilities. The reaction mechanism was further investigated to confirm the contribution of reactive oxygen species (ROS).
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