JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2021
·
IF 4.464
Haibang Zhang,Ning Zhang,Jianzong Man,Yehong Du,Jinlong Cui,Juncai Sun
For the development of sustainable crop-based energy materials, phosphorus and nitrogen binary doped porous C/SiO x composites (PN@C/SiO x ) have been fabricated using rice husks as the Si and C source and (NH 4 ) 3 PO 4 as the P and N source through a facile and environmentally friendly approach. The obtained PN@C/SiO x composites possess a hierarchical porous structure and SiO x particles are uniformly distributed in the P,N-doped C skeleton. The porous P,N-doped C skeleton not only facilitates the ion transport and penetration of electrolyte, but also alleviates the volume expansion and agglomeration of SiO x particles. The P and N co-doping can generate additional defective sites on the C matrix surface, which enhances electronic conductivity and energy storage performance. Due to the above advantages, the optimized PN@C/SiO x composite as anode of lithium-ion batteries (LIBs) presents an excellent reversible specific capacity of 1078 mAh/g at 0.1 A/g and improved initial coulombic efficiency (CE) of 73.6%. Even at 1.0 A/g, a steady specific capacity of 622 mAh/g still could be achieved after 1000 cycles. It is believed that this strategy has great potential in large-scale production of new energy materials for future practical applications.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Yabin Wang,Jianghui Tao,Yanni Wang,Liangzhu Huang,Xiuping Ding
The aggregation and leaching of noble metal nanoparticles (NPs) in supported catalysts can decrease or even deactivate the catalytic activity. It is crucial but still challengeable to circumvent these drawbacks. Herein, we facilely synthesize a novel kind of composite nanocatalyst system to conquer these issues of palladium (Pd) NPs. To be specific, nanochannels of dendritic mesoporous silica&titania nanospheres (DMSTNs) could confine Pd NPs. Anatase titania (TiO 2 ) and the coupled mercapto groups (-SH) on the surface could remarkably disperse and robustly anchor Pd. The as-prepared DMSTNs-SH-Pd displays outstanding performance in p -nitrophenol reduction, where a synergistic effect of the chemical composition and surface functionality on the catalytic activity can be further confirmed by photocatalytic water splitting and Suzuki coupling reaction. The strategy for Pd NPs spatially confined in nanochannels and finely decorated on chemically functionalized supports might be versatile for other noble metals like gold (Au), platinum (Pt), etc .
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2021
·Vol. 9
·期 30
·9599-9609
·
IF 7.393
Cong Shen,Yanqing Zhu,Zixiao Li,Jingling Li,Hong Tao,Jianhua Zou,Xueqing Xu,Gang Xu
InP quantum dots (QDs) are considered as the most promising alternative to Cd-based QDs with lower toxicity, and emission spectrum tunability ranging from the visible to near-infrared region. Although high-quality fluorescent InP QDs have been successfully synthesized by several groups, the rigorous synthesis conditions hinder its practical use in display devices. In this work, for the first time, we introduce Zn2+ into the growth stage of the InP QDs to prepare an InP–In(Zn)P core, and then the as-grown InP–In(Zn)P cores were consecutively coated with typical double shells of inner ZnSe and outer ZnS. The final InP–In(Zn)P/ZnSe/ZnS core/shell/shell QDs exhibited a maximum photoluminescence (PL) quantum yield (QY) of 94.3% and have tunable emissions from yellow (569 nm) to red (630 nm), showing a potential application in display devices. Above all, compared with other related studies, the excellent PL properties were obtained in relatively milder conditions (ultimate vacuum level of 400 mTorr). The results of this study provide guidance for the commercial application of InP QDs as a viable alternative to Cd-based QDs.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2020
·
IF 16.683
Weiming Xiang,Qiuyi Ji,Chenmin Xu,Yang Guo,Yazi Liu,Dunyu Sun,Wenwu Zhou,Zhe Xu,Chengdu Qi,Shaogui Yang,Shiyin Li,Cheng Sun,Huan He
A novel Co 3 O 4 /g-C 3 N 4 /Bi 2 O 2 CO 3 (BCCN) photocatalyst with p-n/n-n heterojunction was synthesized through a solvent-thermal method. The degradation efficiency of 20 mg/L iohexol reached 94 % in 60 min ( k app =0.0417 min −1 ) in BCCN/light/PS system, which was 2.8 and 6.5 times higher than systems of BCCN/light ( k app =0.0150 min −1 ) and BCCN/PS ( k app =0.0064 min −1 ). The g-C 3 N 4 addition lowered conduction band of the prepared material to produce superoxide radicals, activate persulfate and further prevent the recombination of photoelectrons and holes. Superoxide radicals and singlet oxygens were dominant radicals for iohexol degradation. Besides, persulfate could act as electron acceptor to enhance efficiency of electron transfer. The interaction between sulfate, superoxide and hydroxyl radicals improved singlet oxygens production. Furthermore, theoretical calculation and liquid chromatography mass spectrometry were performed to analyze degradation pathway of iohexol in the system. Ultimately, the BCCN/light/PS system can provide a new method to degrade organic pollutants in aquatic environments.
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2021
·
IF 3.764
Beibei Wang,Dongyun Chen,Najun Li,Qingfeng Xu,Hua Li,Jinghui He,Jianmei Lu
A unique Prussian blue analog-derived three-dimensional (3D) hollow Ni–Co bimetal oxide compound supported on two-dimensional (2D) g-C3N4 nanosheets was successfully prepared using a low-temperature annealing method. A spatial conductive frame was formed owing to formation of a p–n heterojunction between the Ni–Co bimetallic oxide and g-C3N4, which accelerated photogenerated carrier migration and inhibited recombination. The hollow Ni–Co bimetallic oxide had pores that allowed facile gas circulation. After g-C3N4 recombination, the synergistic effect of the two catalysts degraded NO (600 ppb) under visible light with an extremely high conversion rate of up to 59.1%. Cycling experiments and X-ray diffraction results confirmed the stability of the composite catalyst, which has broad application prospects in environmental science.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ETHNOPHARMACOLOGY
·
2020
·
IF 3.69
Diao Hui,Tan Rui-Zhi,Li Jian-Chun,Zhong Xia,Wen Dan,Fan Jun-Ming,Wang Li
Ethnopharmacological relevance Acute kidney injury (AKI) is a common disease in hospitalized patients, especially in critically ill patients. It is characterised with high morbidity and mortality, and is also an important cause of chronic kidney disease and chronic renal failure. Astragalus propinquus Schischkin and Panax notoginseng (A&P) compound, a famous traditional Chinese medicine , consists of Astragalus propinquus Schischkin, Panax notoginseng, Angelica sinensis , Achyranthes bidentata , and Ecklonia kurome, has been widely used for the treatment of various kidney diseases in the southwest of China. However, the effects of A&P on treatment of AKI and its underlying mechanism are needed to be uncovered. Aim of the study Recent researches reported that Mincle (Macrophage-inducible C-type lectin) plays a key role in renal injury of AKI by regulating the expression and secretion of inflammatory cytokines on macrophage through modulating NF-κB signaling pathway. Here, we aimed to investigate the renoprotective effect of A&P on AKI and whether by inhibiting Mincle. Materials and methods We established a lipopolysaccharide (LPS)-induced Bone Marrow-Derived Macrophage (BMDM) inflammatory cell model and a cisplatin-induced mouse AKI model in vitro and in vivo . Renal histopathology staining was performed to observe kidney morphology. The expression and secretion of inflammatory cytokines were detected by real-time PCR and Enzyme-linked immunosorbent assay. Western blotting was used to detect the protein levels and Flow cytometry performed to detect polarization of macrophage. Results The results showed that A&P significantly reduced the mRNA expression of IL-1β, IL-6, TNFα and MCP-1 in LPS-stimulated BMDM cells, and secretion of IL-1β and IL-6 in supernatant. The same results were found in Cisplatin-induced AKI kidney and serum after treatment with A&P. The data also showed that A&P strongly reduced the mRNA and protein levels of Mincle in vitro and vivo , and also inhibited the activation of Syk and NF-κB. Notably, A&P down-regulated the M1 macrophage marker iNOS, which may relate to the inhibition of Mincle. Interestingly, both overexpression of Mincle by transfection of pcDNA3.1-Mincle plasmid and administration of TDB (a ligand of Mincle) can significantly abolished the A&P-inhibited inflammation in BMDM, suggesting Mincle pathway play a key role in macrophage inflammation in AKI. Conclusion Our findings indicated that A&P protected kidney from inhibiting inflammation through down-regulating of Mincle pathway in macrophage in AKI. It provides a potential medicine compound for the treatment of AKI.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2020
·
IF 5.065
Yanqing Wang,Qianqian Han,Hongmei Zhang,Yuanyuan Yan
In this work, the binding interactions of norfloxacin (NRF) with p -acetylaminophenol (AAP), aspirin, ibuprofen , and aminopyrine were investigated by molecular modeling and fluorescence quenching methods. The results indicated the existence of the electrons transferring during the π–π stacking interaction with face to face stacking of them. NRF acts as electron acceptor during the NRF-AAP and NRF-aminopyrine complexes and acts as electron donor during the NRF-aspirin, NRF-ibuprofen complexes. Fluorescence quenching of NRF induced by AAP, aspirin, ibuprofen, and aminopyrine are the formation of complexes. The binding ability of NRF with AAP, aspirin, ibuprofen, and aminopyrine indicated that the order are from top to bottom aminopyrine, AAP, aspirin, and ibuprofen and the number of the binding site n is about 1.
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2020
·
IF 6.215
Silu Huo,Yubo Zhao,Mingzhu Zong,Bolong Liang,Xueli Zhang,Izhar Ullah Khan,Kexun Li
Heteroatom-doped porous carbon frameworks have attracted extensive attention as high-performance electrodes for capacitive applications. While their further development is still restricted by the inevitable concurrent dopant leaching effect and structural collapse during the high-temperature pyrolysis process . Therefore, developing a straightforward method for the synthesis of carbons simultaneously with plentiful multiple external defects and rational porous structure to satisfy high-performance capacitive applications is still a tremendous challenge. Herein, an emerging plerogyra sinuosa-like hierarchically porous carbon with plentiful N/P external defects is firstly prepared via an effective and in-site carbonization process, which shows great promise for supercapacitor and capacitive deionization applications. Due to the efficient N and P synergistic effects and 3D connected framework with prolific meso-microporous structure, the optimized carbon exhibits a large specific capacitance of 337 F g −1 at a current density of 1 A g −1 and maintains 239 F g −1 at 100 A g −1 in 6.0 M KOH electrolyte. For capacitive deionization tests, the carbon shows an excellent salt adsorption capacity of 19.3 mg g −1 in NaCl solution with a concentration of 500 mg L −1 at an applied voltage of 1.2 V. While from the kinetics analysis and density functional theory, we find that the coupling of multiple external defects has a positive influence on the distribution of electron density and surface condition, which is greatly beneficial to pseudocapacitance, quantum capacitance and the electrolyte-adsorption capacity. This work provides a new route for the preparation of emerging heteroatom-doped hierarchically porous carbon frameworks for further advanced applications such as water treatment, electrocatalysis , as well as energy storage.
✓ 已验证
产品关联
DOI
高影响因子
Waste and Biomass Valorization
·
2020
·Vol. 12
·期 6
·3271-3286
·
IF 2.851
Sajid Muhammad,Bai Yuchen,Liu Dehua,Zhao Xuebing
Abstract Hydroxymethylfurfural (HMF) has been considered as one of the most promising biomass derived precursors for producing bio-based materials. Lewis acids are usually used to facilitate the isomerization of glucose to fructose in order to improve the HMF yield. In this study, glucose was converted to HMF with p -toluenesulfonic acid ( p TSA) and chlorides as Brønsted and Lewis acids catalysts in the DMSO medium at 120 °C under atmospheric pressure. Kinetic modeling of the process was investigated with consideration of glucose isomerization, dehydration of fructose, rehydration of HMF and formation of humin. NH 4 Cl was screened as the most efficient co-catalyst for glucose conversion with HMF yield of 47%. The developed model could be well used to simulate the process with satisfying goodness of fit. The activation energies for glucose isomerization, condensation, dehydration of fructose, and rehydration of HMF were determined to be 39.8, 18.1, 55.2, and 19.0 kJ/mol, respectively. However, because the fructose concentration was very low and the reaction rate of fructose dehydration was much higher than that of glucose isomerization, a pseudo-steady state assumption could be employed, by which the observed activation energy for a lumped reaction of glucose to HMF conversion ( E HMF ) was determined as 45.6 kJ/mol. The developed observed kinetic model could be well used to describe the kinetics of p TSA and chloride co-catalyzed conversion of HMF. Isomerization of glucose to fructose, condensation of glucose to form humin, dehydration of fructose to form HMF, and rehydration of HMF to LA were the major reactions in the system. To improve the HMF selectivity, efforts should be made to reduce the rate of glucose condensation to form humin Graphic Abstract
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2020
·Vol. 138
·期 3
·49697
·
IF 2.52
Xiaoqiang Jin,Huihong Jiang,Fenghui Qiao,Weipin Huang,Xiaojiong Bao,Zhengke Wang,Qiaoling Hu
Conductive hydrogels have attracted a myriad of interest due to their potential applications for human motion monitoring, personal healthcare diagnosis and so forth. However, fabrication of hydrogel-based strain sensors integrating with ultrastretchability, adhesiveness, strain sensitivity, biocompatibility, and self-cleaning function is still a challenge. Herein, a new type of semi-interpenetrating multifunctional hydrogels, which integrated all above practical features magically were prepared via a facile one-pot in-situ radical copolymerization method. Thereinto, [2-(methacryloyloxy) ethyl] dimethyl-(3-sulfopropyl) ammonium hydroxide (SBMA) and acrylamide (AAm) copolymers cross-linked by N , N ′-Methylenebisacrylamide (MBAA) served as the soft and functional matrix, whereas alginate was employed as the enhanced component. The transparent zwitterionic hydrogels had a max elongation and ionic conductivity of 1353% and 0.15 S/m, respectively. They could adhere onto various surfaces, including steel, glass, skin, and rubber. The repeatable adhesiveness, linear strain sensitivity within 0%–250% tensile strain and 0%–30% compressive strain provided remarkable working range and using stability. What's more notable was that the biocompatibility and self-cleaning function tested by MTT, live/dead assay, allergy patch tests, and plate colony-counting method imparted great possibility of practical application for strain sensors to hydrogels from a biological point of view.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2020
·
IF 4.939
Fanghui Wang,Yajun Zhang,Yimeng Luo,Yanan Wang,Hong Zhu
A dandelion-like CNTs-Ni foam composite carrier supported Co–Mo–P ternary alloy catalyst (Co–Mo–P/CNTs-Ni foam) was prepared by electroless plating . The structure of Co–Mo–P/CNTs-Ni foam catalyst is characterized by XRD , SEM, XPS and EDS . The particle size of Co–Mo–P ternary alloy nanoparticles is about 80 nm. The Co–Mo–P/CNTs-Ni foam completely retains the tubular structure of carbon nanotubes and the gaps between carbon nanotubes of CNTs-Ni carrier, which increases the specific surface area of the catalyst and the flow space of reactants and products. Co–Mo–P/CNTs-Ni foam catalyzes sodium borohydride alcoholysis to produce hydrogen at a maximum rate of 2.64 L ·min −1 ·g −1 , and the reaction activation energy is 47.27 kJ ·mol −1 , which is far lower than that of the spontaneous alcoholysis reaction of sodium borohydride. After the Co–Mo–P/CNTs-Ni foam catalyst was reused 8 times, the catalytic hydrogen production rate was reduced by 23% compared with the initial rate.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION SCIENCE AND TECHNOLOGY
·
2020
·
IF 1.718
Yingying Li,Haoliang Zhao,Weijun Yang,Yong Gao,Liming Wang
Trace cobalt ion in the zinc sulfate electrolyte is the most difficult to be removed among all metallic impurities and has the most detrimental effect on zinc electrowinning. In this study, poly(p-hydroxystyrene) resin was first prepared from polystyrene, and then 1-nitroso-2-naphthol was grafted onto poly(p-hydroxystyrene) resin through -O- group by a series of reactions to obtain the 1-nitroso-2-naphthol-grafted-poly(p-hydroxystyrene) resin. Finally, the grafted resin was supported on SiO2. The supported resin could removal trace cobalt ions with good selectivity and reusability in the zinc sulfate leachate, which can meet the requirements of the industrial electrolytic zinc process.
✓ 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）