RSC Advances
·
2015
·Vol. 6
·期 4
·3235-3242
·
IF 3.84
Jun Hu,Yue Ding,Haidong Zhang,Peng Wu,Xiaohong Li
At near ambient temperature, Ru nanoparticles entrapped in ordered mesoporous carbons (OMCs) CMK-3 show superior efficiency in the green reduction process of nitrobenzene and its derivatives with hydrazine monohydrate as a hydrogen donor using water as solvent. The Ru/CMK-3 catalyst exhibited much higher activity than a commercial Ru/C catalyst purchased from Alfa Aesar toward the reduction of nitrobenzene with hydrazine monohydrate under the same conditions. The interaction of Ru nanoparticles with CMK-3 and the mesoporous structure of CMK-3 OMCs might play important roles in determining the catalytic performance of the Ru/CMK-3 catalyst. In addition, the catalytic performance of the Ru/CMK-3 catalyst for the reduction of nitrobenzene was also compared using different hydrogen sources. Hydrazine monohydrate was found to be suitable as a hydrogen donor for the reduction of nitrobenzene and its derivatives. Compared with those obtained in the reduction of nitrobenzenes using 4.0 MPa hydrogen, the catalytic activity of the Ru/CMK-3 catalyst obtained using hydrazine monohydrate as hydrogen donor was much higher in most cases.
研究领域:
催化化学
·
材料化学
·
绿色化学
·
纳米材料
·
有机合成
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Xianyue Zhang,Yongguang Zhang,Nianxue Dong,Jiawei Fan,Haipeng Li,Baoe Li
The slow Na + diffusion and low intrinsic electrical conductivity of Na 3 V 2 (PO 4 ) 3 (NVP) limit its practical application in sodium-ion batteries (SIBs). A synergistic enhancement approach of Si 4+ substitution and N-doped carbon coating has been introduced in this paper to produce a porous coral-like Na 3.1 V 2 (PO 4 ) 2.9 (SiO 4 ) 0.1 @NC-2 (NVPS@NC-2) composite. Si 4+ incorporation into the NVP lattice expands the Na + migration channels and decreases the bandgap so that intrinsic electronic conductivity of NVP was enhanced as confirmed by density functional theory calculations. Additionally, the N-doped carbon coating forms numerous extrinsic defects and creates a novel porous coral-like morphology that boosts the specific surface area. The initial specific capacity of NVPS@NC-2 cathode achieves 115.7 mAh g −1 at a current density of 0.1C. And even at 60/120C, NVPS@NC-2 cathode still exhibits 98.9/66.2 mAh g −1 , maintaining 92.9% and 90.6% capacities after 5000/10000 cycles, respectively, showing its viability for advanced SIBs applications.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2023
·Vol. 140
·期 23
·e53941
·
IF 3
Ping Li,Lijuan Li,Lianmin Ji,Li Dang,Shengjie Lan,Donghai Zhu
To improve the fire safety of epoxy resins (EP), a composite with magnesium hydroxide loaded zinc borate (MH@ZBO) was obtained using a heterogeneous deposition method, and then 3-aminopropyltriethoxysilane (APES) was grafted onto the surface of MH@ZBO to produce an organic–inorganic hybrid (MH@ZBO-APES). Subsequently, the EP composite with added MH@ZBO-APES was prepared and its thermal properties and fire safety were evaluated. The results showed that the glass transition temperatures of the EP/MH@30ZBO-10APES composite are improved, and the maximum thermal decomposition rate decreased, and the samples exhibited favorable thermal stability and flame-retarding performance (flame retardancy index: 2.40; LOI: 33%). The enhanced fire safety was a result of two factors. On one hand, the endothermic decomposition of MH and ZBO and the physical barrier of their decomposition products, the catalytic carbonization function of ZBO, the synergistic flame retardation of APES, and its improvement in dispersion to form a denser carbon layer, which plays a role in fire retardation and smoke suppression in the condensed phase. On the other hand, water vapor produced by the decomposition of MH and ZBO, as well as incombustible gas produced by the degradation of APES, are vital in the gas phase.
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高影响因子
Biosensors-Basel
·
2023
·Vol. 13
·期 3
·317
·
IF 5.4
Jie Huang,Tongtong Zhang,Yanyan Zheng,Jiyang Liu
An electrochemiluminescence-electrochemistry (ECL-EC) dual-mode sensing platform based on a vertically-ordered mesoporous silica films (VMSF) modified electrode was designed here for the sensitive and selective determination of cancer antigen 15-3 (CA 15-3), a specific biomarker of breast cancer. VMSF was assembled through a rapid electrochemically assisted self-assembly (EASA) method and plays a crucial role in signal amplification via a strong electrostatic interaction with the positively charged bifunctional probe Ru(bpy)32+. To construct the biorecognition interface, epoxy functional silane was linked to the surface of VMSF for further covalent immobilization of the antibody. As a benefit from the specific combination of antigen and antibody, a non-conductive immunocomplex layer was formed in the presence of CA 15-3, leading to the hinderance of the mass and electron transfer of the probes. Based on this strategy, the dual-mode determination of CA 15-3 ranging from 0.1 mU/mL to 100 mU/mL with a LOD of 9 μU/mL for ECL mode, and 10 mU/mL to 200 U/mL with a LOD of 5.4 mU/mL for EC mode, was achieved. The proposed immunosensor was successfully employed for the detection of CA 15-3 in human serum without tedious pretreatment.Keywords:dual-mode detection;electrochemiluminescence;electrochemistry;cancer antigen 15-3;vertically ordered mesoporous silica film;immunosensor
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PubMed
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2023
·
IF 2.6
Chenyang Yao,Ji Mi,Pengfei Jiang,Cui Ye,Yitong Dai,Yongsheng Guo,Wenjun Fang
Active cooling by endothermic hydrocarbon fuels (EHFs) is considered as a practical approach to deal with the thermal management problem of hypersonic aircrafts. As a typical component of EHFs, decalin is usually thermally stable while it is apt to coke and has poor combustion performance. n-Hexadecane, a normal alkane with a relatively high H/C ratio, can effectively improve the combustion performance of EHFs, and 1-butanol has remarkable anti-coking properties. As a fundamental work for fuel design, decalin, n-hexadecane, and 1-butanol were selected as model compounds to construct a surrogate fuel system, which was used to investigate the effects of composition and condition on its thermophysical properties. Densities (ρ) and viscosities (η) of the ternary system of decalin (1) + n-hexadecane (2) + 1-butanol (3) and corresponding binary systems were measured at temperatures T = (293.15 to 333.15) K and pressure p = 0.1 MPa. The excess molar volumes (VmE) and the viscosity deviations (Δη) of the mixtures were calculated and fitted to several semi-empirical equations. The tendencies of VmE and Δη with composition and temperature were discussed from intermolecular force and molecular size, respectively.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 17
·8334-8346
·
IF 3.3
Peifu Sun,Xiao Zhang,Zhiren Guo,Xinyue Liu,Yuanming Lan,Dongxiang Zhang,Hansheng Li,Jinying Li,Helei Liu,Xiyan Xu
The excessive discharge of isothiazolinone bacteriostatic agent-containing wastewater has posed serious threats to human health and environmental safety. As 1,2-benzisothiazolin-3-one (BIT) is one of the most commonly used isothiazolinones, its effective degradation is necessary and urgent. In the current study, a NH2-MIL-53(Fe)-based adsorptive photo-Fenton-like system was constructed for efficiently adsorbing and photodegrading BIT under solar light. The equilibrium BIT adsorption capacity Qe of NH2-MIL-53(Fe) reached 1140.89 mg g−1. The adsorptive photo-Fenton-like system has achieved more than 90% removal of BIT using NH2-MIL-53(Fe) in the presence of H2O2 under solar light irradiation, and the band gap of NH2-MIL-53(Fe) was calculated by UV-Vis analysis to be 2.10 eV. The influences of pH, dosage of photocatalysts and H2O2 were also assessed. It was found that H2O2 reduced the recombination of electron–hole pairs, and the radical quenching experiments and EPR testing result confirmed that h+, ˙OH and O2˙− played a crucial role in the photocatalytic process. This study supports the application of Fe-based MOF materials for simultaneous adsorption and the solar light photocatalytic degradation of BIT.
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高影响因子
Journal of Cleaner Production
·
2022
·
IF 11.072
Xinyu Zhang,Hai Nguyen Tran,Yena Liu,Chao Yang,Tingwei Zhang,Jiaqi Guo,Wenyuan Zhu,Mehraj Ahmad,Huining Xiao,Junlong Song
Magnetic biochar displays promising applications in dye wastewater treatment since it can be effectively separated by magnetism. However, the preparation of magnetic biochar with a large specific surface area is complicated and the effects of ferrous and/or ferric ions on dye adsorption are not clear enough. Herein, a facile one-pot approach of magnetic self-nitrogen-doped biochar fabrication was developed, using K 3 [Fe(C 2 O 4 ) 3 ] as an activator and iron supplier. Magnetic self-nitrogen-doped biochar could be easily separated with a magnet. Magnetic self-nitrogen-doped biochar had a large specific surface area (1034 m 2 /g) and excellent adsorption capacities for Congo red (1360 mg/g) and Rhodamine B (320 mg/g). From thermodynamics studies, Congo red adsorption on magnetic self-nitrogen-doped biochar is better than Rhodamine B. Based on the larger adsorption energies , magnetic self-nitrogen-doped biochar has a relatively stronger binding ability for Congo red than Rhodamine B, and the ferrous ions loaded on biochar surface are more beneficial for dye adsorption than ferric ones.
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高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2022
·
IF 6.364
Xinglong Liu,Zexing Wang,Xinyao She,Quanliang Jia,Jiamao Li
In this study, LiF was utilized to decrease sintering temperature , improve microstructure, enhance Q × f , and regulate τ f of Li 2 Ti 0.9 (Zn 1/3 Ta 2/3 ) 0.1 O 3 (abbreviated as LTZT) ceramics. A complete solid solution together with a phase transition from monoclinic to cubic rock salt structure occurred. The cell volume of LTZT ceramics decreased as the LiF content increased. Relatively dense and uniform microstructures were observed for the ceramics as the LiF content was not less than 2 wt%. The dielectric constant of LTZT ceramics initially increased and then decreased with the increasing LiF content. The FWHM of the Raman band at about 808 cm −1 was closely related to the Q × f value. Notably, the samples with 3 wt% LiF exhibited the highest relative density of 97.4 % and satisfactory microwave dielectric properties of ε r = 23.14 ± 0.16, Q × f = 110,090 ± 1100 GHz, and τ f = +3.25 ± 1.45 ppm/°C when sintered at 950 °C. Good chemical compatibility with silver indicated the ceramic is a promising candidate in LTCC applications.
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高影响因子
Food Frontiers
·
2022
·Vol. 4
·期 1
·289-296
·
IF 0
Hongting Deng,Yuanju He,Hui Cao,Lei Chen,Hui Teng
The aim of the present work was to evaluate different structures of flavonoids interfering with the cytotoxicity of heterocyclic amines (HCA). Eight flavonoids with similar structure including myricetin, rutin, fisetin, quercetin, myricetrin, quercetrin, kaempferol, and galangin were coincubated with 2-amino-4-methylimidazo[4,5-f]quinolone (IQ) respectively to determine the cytotoxicity. The results revealed that IQ at low doses showed no cytotoxicity; however, in the presence of myricetin and rutin, the cytotoxicity significantly elevated. It seems that C-3′, C-4′, C-5′, and C-5 hydroxyl substituents on the flavonoid skeleton of B ring play important role in the increasing cytotoxicity induced by IQ in HepG2 cells. Interestingly, the data obtained from the present study revealed an unexpected adverse effect of the supposed beneficial food ingredient myricetin, which appears to be able to increase the cytotoxicity of the procarcinogen HCA.
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CHEMOSPHERE
·
2022
·
IF 8.943
Jingyu Wang,Lin Han,Ziyan Liu,Wei Zhang,Lei Zhang,Jiaru Jing,Ai Gao
Benzene is a group I carcinogen determined by IARC. The prevalence of benzene in occupational and general environments increases the risk of acute myeloid leukemia (AML) among workers and childhood leukemia. However, the mechanism of hematotoxicity induced by benzene remains unclear. Recently, the gut microbiota has been regarded as a pivotal part of normal and malignant hematopoiesis . Therefore, in this study, we explored the function of gut microbiota in hematopoietic injury induced by benzene by 16S rRNA sequencing. We found that benzene exposure caused bone marrow damage, hematopoietic stem and progenitor cells ( HSPCs) dysfunction, and peripheral blood cell reduction. Moreover, intestinal barrier damage and gut microbiota dysbiosis were also observed in benzene-exposed mice. Interestingly, two gut flora, Lachnospiraceae_NK4A136_group and unclassified_Muribaculaceae, were significantly up-regulated and associated with hematopoietic indicators, suggesting that gut-host crosstalk might mediate benzene hematotoxicity. Microbiota-derived metabolites, such as short-chain fatty acids (SCFAs), bile acids, and tryptophan metabolites, are the primary mediators of the gut-host crosstalk . Therefore, we conducted absolute quantitative metabolomics to investigate the impact of benzene exposure on these metabolites in mice. The results showed that the concentration of SCFA butyrate, t ryptophan metabolites kynurenine, and Indole-3-propionic acid (IPA) were significantly altered after benzene exposure. However, no difference was found in bile acids. Significant correlations were found between altered metabolites and hematopoietic indicators. We then investigated the flora that derived these metabolites. Lachnospiraceae_NK4A136_group and unclassified_Muribaculaceae were enriched in the butyrate metabolism and tryptophan metabolism pathways. Correlation analysis further suggested that unclassified_Muribaculaceae was positively associated with butyrate (r = 0.588, P < 0.05) and IPA (r = 0.59, P < 0.05). The above results demonstrated that unclassified_Muribaculaceae and microbiota-derived butyrate and IPA were involved in hematopoietic toxicity caused by benzene. This study provides insight into gut microbiota-derived metabolites-host crosstalk in benzene hematopoietic toxicity.
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PubMed
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Yingyu Zeng,Xusheng Li,Kailan Yuan,Bo Chen,Wenbao Zhang,Chao Wang,Jianxia Sun,Hosahalli S. Ramaswamy,Weibin Bai
Hydroxyphenyl-pyranoanthocyanins (PACNs), derived from anthocyanins (ACNs) reacted with hydroxycinnamic acids, have higher practical application value because of better physicochemical stability than their precursors. However, the slow formation rate restricted their broader applications. In the present study, cyanidin-3- O -glucoside (C3G) was chosen to react with four kinds of hydroxycinnamic acids in a model solution. Changes of color and the production of hydroxyphenyl-PACNs were monitored. The formation of derivatives was time-dependent, and the orange-yellow changing trend was correlated with the formation of PACNs and the consumption of C3G. In addition, high-pressure processing (HPP) as a widely-used non-thermal processing method in the food industry was conducted to investigate its impact on hydroxyphenyl-PACNs formation. The results showed that HPP significantly improves the yield of two types of hydroxyphenyl-PACNs (C3G-4-vinylcatechol and C3G-4-vinylphenol) and the retention of total residual pigments during 56 days of storage. Therefore, HPP contributed to color-protecting and the transformation of hydroxyphenyl-PACNs.
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PubMed
高影响因子
ACS Nano
·
2023
·
IF 17.1
Yingying Niu,Xin Zhou,Wei Gao,Maixia Fu,Yule Duan,Jiandong Yao,Bing Wang,Mengmeng Yang,Zhaoqiang Zheng,Jingbo Li
Driven by the rapid development of autonomous vehicles, ultrasensitive photodetectors with high signal-to-noise ratio and ultraweak light detection capability are urgently needed. Due to its intriguing attributes, the emerging van der Waals material, indium selenide (In2Se3), has attracted extensive attention as an ultrasensitive photoactive material. However, the lack of an effective photoconductive gain mechanism in individual In2Se3 inhibits its further application. Herein, we propose a heterostructure photodetector consisting of an In2Se3 photoactive channel, a hexagonal boron nitride (h-BN) passivation layer, and a CsPb(Br/I)3 quantum dot gain layer. This device manifests a signal-to-noise ratio of 2 × 106 with responsivity of 2994 A/W and detectivity of 4.3 × 1014 Jones. Especially, it enables the detection of weak light as low as 0.03 μW/cm2. These performance characteristics are ascribed to the interfacial engineering. In2Se3 and CsPb(Br/I)3 with type-II band alignment promote the separation of photocarriers, while h-BN passivates the impurities on CsPb(Br/I)3 and promises a high-quality carrier transport interface. Furthermore, this device is successfully integrated into an automatic obstacle avoidance system, demonstrating promising application prospects in autonomous vehicles.
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PubMed
高影响因子
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