JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
·
IF 9.965
Bo Dai,Yong Ma,Shixuan Feng,Haowen Wang,Mingliang Ma,Jianxu Ding,Xunqian Yin,Tingxi Li
The development of microwave absorbing materials with strong absorption capacity, wide bandwidth and light weight has always been a topic of concern. Herein, one-dimensional (1D) M (Co, Ni)@polyaniline (PANI) nanochains (NCs) with adjustable thickness have been successfully synthesized by reducing the mental ions under a parallel magnetic field, pretreating metal nanochains with KH550 and pre-oxidization of aniline monomer. It is found that Co has a more favorable absorption width for electromagnetic waves (EMW) and Ni aims at the absorption intensity. Furthermore, the effect of metal elements on adjusting impedance matching is more significant than their magnetic loss for composites. The minimum reflection loss (RLmin) of CoP2 can be up to −73.16 dB at 4.63 mm and the effective absorption bandwidth (EAB) is 4.98 GHz at 2.17 mm, while those of NiP2 are −65.06 dB at 3.88 mm and 5.02 GHz at 2.05 mm. The increase of PANI content can significantly reduce the matching thickness. And the RLmin of CoP3 and NiP3 can reach −58.72 dB at 2.32 mm and −65.96 dB at 1.59 mm, respectively. The absorption mechanism reveals that the matching thickness of the quarter-wavelength determines frequency location. And high absorption intensity is attributed to the synergistic effects of impedance matching, conduction loss, polarization loss, and magnetic loss. This work provides a theoretical basis for designing PANI or other conducting polymers coating magnetic nanochains for electromagnetic absorbing materials with strong absorption capacity, wide bandwidth and light weight.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2022
·
IF 24.319
Haoyang Fu,Meirong Li,Qianyu Xu,Guoliang Chen,Yunjie Zou,Weixian Zhang,Shuzhou Li,Lan Ling
Downsizing supported metal of Fe 0 -based materials in dealing with ever-growing pharmaceutical contamination issues are highly desired but still challenging. Herein, we develop a modular design protocol to synthesize a family of ultrafine alloy nanoclusters embedded in a nitrogen-enriched carbon framework (NEC@FeM (M=Pd, Pt, Au)). Engineering the fine structure of nitrogen-enriched carbon and interfacial interaction with bimetallic nanoclusters largely suppresses bimetallic overgrowth, eventually producing supported ultrafine (< 4 nm), highly dispersed, well-alloyed nanoclusters. The alloying Fe 0 with M for ultrafine nanoclusters optimize the electron flow, chemical stability, and catalytic property, resulting in the obtained NEC@FeM exhibiting excellent doxorubicin (DOX) degradation performance. Density functional theory calculation combined with experimental results attribute the outstanding DOX degradation ability of NEC@FePd originally to the synergistic effect of enhanced DOX affinity and efficient electrons transfer from Fe to DOX. This work provides a paradigm for the design of ultrafine Fe 0 -based nanocluster with application in pollution control.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2021
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IF 7.46
Chengli Zhang,Xun You,Yuliang Li,Yuanyuan Zuo,Wei Wang,DanDan Li,ShengWei Huang,Hangzhi Hu,Feng Yuan,Fuqiang Shao,Minggang Yin
In this work, an aptamer was used as an identifying molecule and a novel amplification strategy based on Ce-MOF and m-PdNFs-G4-MBs for the sensitive detection of dopamine (DA) is demonstrated. Notably, a novel dopamine aptamer with higher affinity and specificity was chosen, and the PdNF was functionalized with MB via embeddedness and surface decoration for enhancing the intensity of electrochemical signal. The synthesized m-PdNFs-G4-MBs nanocomposite not only acts as the electrochemical indicator but also to label single-stranded DNA (S2) to acquire signaling probes (m-PdNFs-S2-G4-MBs) as a nanocarrier . Besides, an -NH 2 modified single-strand DNA (S1) is designed, and form an S1-AP double-strand by annealing reaction with aptamer (AP), then the S1-AP is fixed on the Ce-MOF surface, decorated on electrode. In the presence of DA, DA bind to the AP and S1 regain single-stranded structure. And then, the single-stranded S1 recognizes m-PdNFs-S2-G4-MBs and captures them, ultimately producing an enhanced electrical signal. Due to the extraordinary conductive performance of Ce-MOF and the signal amplification of m-PdNFs-S2-G4-MBs, the new detection platform achieves a minimum detection limit to 6 pmol/L for DA and with a good specificity. Prominently, the results obtained from our platform for serum DA detection are highly consistent with the UPLC-MS method. These results suggest that this new platform has the potential to provide a convenient and efficient tool for the diagnosis of multiple neurological disorders in the future. This work also provides a good strategy for the construction of other biomolecule sensors.
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Materials
·
2021
·Vol. 14
·期 20
·6166
·
IF 3.623
Hongbo Gao,Kewang Zhang,Ailijiang Abudurusuli,Chen Bai,Zhihua Yang,Kangrong Lai,Junjie Li,Shilie Pan
Two new diamond-like (DL) chalcogenides, Li2MgGeSe4and Li2MgSnSe4, have been successfully synthesized using a conventional high-temperature solid-state method. The two compounds crystallize in the non-centrosymmetric space groupPmn21witha= 8.402 (14) Å,b= 7.181 (12) Å,c= 6.728 (11) Å,Z= 2 for Li2MgSnSe4, anda= 8.2961 (7) Å,b= 7.0069 (5) Å,c= 6.6116 (6) Å,Z= 2 for Li2MgGeSe4. The calculated results show that the second harmonic generation (SHG) coefficients of Li2MgSnSe4(d33= 12.19 pm/v) and Li2MgGeSe4(d33= −14.77 pm/v), mainly deriving from the [MSe4] (M = Ge, Sn) tetrahedral units, are close to the one in the benchmark AgGaS2(d14= 13.7 pm/V). The calculated band gaps for Li2MgSnSe4and Li2MgGeSe4are 2.42 and 2.44 eV, respectively. Moreover, the two compounds are the first series of alkali and alkaline-earth metal DL compounds in the I2-II-IV-VI4family, enriching the structural diversity of DL compounds.Keywords:diamond-like structure;chalcogenides;infrared nonlinear optical materials;second harmonic generation
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Nano Research
·
2021
·Vol. 15
·期 1
·519-527
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IF 8.897
Zhou Dan,Zhang Leilei,Liu Xiaoyan,Qi Haifeng,Liu Qinggang,Yang Ji,Su Yang,Ma Jingyuan,Yin Jianzhong,Wang Aiqin
Fine-tuning of the coordination environment of single-atom catalysts (SACs) is effective to optimize their catalytic performances, yet it remains challenging due to the vulnerability of SACs. Herein, we report a new approach to engineering the coordination environment of M-N-C (M = Fe, Co, and Ni) SACs by using glutamic acid as the N/C source and pyrolysis atmosphere as a regulator. Compared with that in N 2 , NH 3 was able to promote the doping of N at T < 700 °C yet etch the N-species at higher temperatures, by which the M-N coordination number (CN) and the electronic structure were delicately tuned. It was found that the electron density of Ni single atoms increased with the decrease of Ni-N CN. As a consequence, the capability of Ni-N-C to dissociate H 2 was greatly enhanced and a higher catalytic activity in chemoselective hydrogenation of functionalized nitroarenes was achieved. Moreover, this modulation method could be applied to other transition metals including Fe and Co. In particular, the as-synthesized Co-N-C SAC afforded a turnover frequency of 152.3 h −1 with 99% selectivity to 3-vinylaniline in the hydrogenation of 3-nitrostyrene, which was the highest ever reported thus far and was at least one order of magnitude more active than state-of-the-art noble-metal-free M-N-C catalysts, demonstrating the great potential of engineering the coordination environment of SACs.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2020
·
IF 4.65
Wenhu Yang,Hao Guo,Liguo Yue,Qi Li,Mengni Xu,Longwen Zhang,Tian Fan,Wu Yang
In this present paper, a novel layered multi-metal sulphide was reported as a positive electrode material with abundant electroactive sites and redox reaction centres. Molybdenum and sulfur elements were introduced into the metal-organic frameworks (M-MOF: M = Ni, Co and Ni/Co) to synthesize layered MMoS x by a hydrothermal method . The electrochemical performance comparison of MOFs and six electrode materials demonstrated that NiCoMoS x electrode materials had the best electrochemical performance and the highest specific capacitance. The highest specific capacitance could reach 2595 F g −1 at a current density of 1 A g −1 . The NiCoMoS x electrode material also had an excellent cycle stability with a retention rate of 90.8% after 10,000 charge and discharge cycles. In addition, the as-assembled NiCoMoS x //AC assymmetric supercapacitor (ASC) device exhibited a maximum energy density of 48.2 Wh·kg −1 at a power density of 807.2 W kg −1 , and the capacity retention rate after 10,000 charge and discharge cycles was 91.6%. This electrochemical performance indicated that this kind of material had a good market development prospect.
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Journal of Materials Chemistry C
·
2020
·Vol. 8
·期 38
·13396-13404
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IF 7.059
Liangmiao Zhang,Fang Xia,Jianing Yao,Tianli Zhu,Hui Xia,Guang Yang,Bin Liu,Yanfeng Gao
Monoclinic VO2(M) has been considered as one of the most promising materials for fabricating energy-saving smart windows, but its scalable synthesis is still a great challenge. In this work, pure and tungsten (W)-doped VO2(M) nanoparticles (20–50 nm) were prepared by a simple hydrothermal recrystallization method using an amorphous precursor obtained from coprecipitation in a mixed VOSO4 and NaOH solution (pH = 9). The phase transition temperature of the obtained W-doped VO2(M) nanoparticles decreases with increasing W-doping, by −28.4 °C per at% of W in the range of 0–1.1 at%. The mechanism of hydrothermal recrystallization was studied by using ex situ powder X-ray diffraction (PXRD) and in situ synchrotron radiation-based PXRD. It was found that the hydrothermal synthesis underwent two steps: (1) recrystallization of amorphous precursor to VO2(B) crystals, and (2) allotropic phase transformation from the metastable intermediate VO2(B) to VO2(M). In addition, the fabricated films using VO2(M) with 0.7 at% W-doping showed excellent thermochromic performance, with a suitable phase transition temperature of 42.7 °C, high average luminance transmittance of up to 61.7%, and good solar energy modulation ability of 11.7%, making them a suitable material for efficient and low-cost energy saving smart windows.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Yangfan Du,Xiaoxiang Hu,Shubo Liu,Xin Zhang,Guanglong Jing,Liang Hou,Shifeng Wang,Yong Li
Nonstoichiometric Zn 1+m In₂S 4+m samples were synthesized by raising Zn and S precursor ratios, enhancing [001] asymmetry. • Enhanced asymmetry gives Zn 1+m In₂S 4+m a stronger intrinsic internal electric field (IEF), boosting charge separation. • Zn₂In₂S₅ shows a H₂O₂ production rate of 2452 μmol g⁻¹ h⁻¹ in air, 3.09 times that of ZnIn₂S₄. • This work demonstrates the feasibility of enhancing the internal electric field via compositional regulation. Two-dimensional ZnIn 2 S 4 is regarded as a promising candidate for photocatalytic H 2 O 2 production owing to its unique crystal structure. However, its practical photocatalytic efficiency remains limited by the severe recombination of photogenerated charge carriers and sluggish charge carrier migration. The intrinsic asymmetric crystal structure of ZnIn 2 S 4 generates an internal electric field (IEF), which effectively suppresses charge carrier recombination and promotes charge carrier separation and migration. In this work, the structural asymmetry of Zn 1+m In 2 S 4+m was systematically enhanced by simultaneously increasing the Zn and S source ratios in the precursors, thereby significantly strengthening the IEF. Benefiting from the enhanced IEF, the optimized Zn 2 In 2 S 5 sample exhibits an outstanding H 2 O 2 production rate of 2452 μmol g⁻¹ h⁻¹ , approximately 3.09 times that of ZnIn 2 S 4 . This work not only demonstrates the feasibility of strengthening the IEF through composition regulation to enhance photocatalytic performance, but also provides new insights into the design of highly efficient photocatalysts.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2023
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IF 22.1
Rui Sui,Jing Chai,Xuerui Liu,Jiajing Pei,Xuejiang Zhang,Xingdong Wang,Yu Wang,Juncai Dong,Wei Zhu,Wenxing Chen,Liang Zhang,Zhongbin Zhuang
The metal-nitrogen-carbon (M-N-C) type oxygen reduction reaction (ORR) catalysts are promising for hydroxide exchange membrane fuel cells, but catalysts with further improved performance are challenging. Here, we report the efficient improvement of the ORR activity of M-N-C catalysts by employing highly polarizable metal cation Ag + . Ag, Fe single atomic sites embedded in concave nitrogen doped carbon (Ag 1 Fe 1 /CNC) is successfully synthesized and shows high performance towards ORR, indicating by both the ultra-high half-wave potential of 0.917 V and membrane electrolyte assembly performance of peak power density up to 1.26 W cm −2 . The binding energy of the ORR intermediates on the highly polarizable Ag site in Ag 1 Fe 1 /CNC was significantly tuned by the adjacent Fe site by more than 0.2 eV, and thus leading to a low theoretical ORR overpotential of only 0.398 V. The employment of the highly polarizable metal cation brings a novel and efficient approach to construct highly active catalysts.
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Journal of Inflammation Research
·
2023
·
IF 4.5
Yunbo Yan,Linqian Yu,Binyang Chen,Chang’an Cao,Hairong Zhao,Qiang Wang,De Xie,Yuemei Xi,Chenggui Zhang,Jidong Cheng
Background Gouty arthritis is characterized by the accumulation of monosodium urate crystals (MSU) in the synovial joints and surrounding tissues. Mastoparan M (Mast-M) is a biologically active peptide composed of 14 amino acids, extracted from wasp venom. This study aims to assess the impact of Mast-M on in vitro and in vivo gouty arthritis induced by lipolyaccharide (LPS) plus MSU crystal stimulation.Methods PMA-differentiated THP-1 macrophages were pre-treated with Mast-M or left untreated, followed by stimulation with LPS and MSU crystals. Cell lysates were collected to assess the expression of the NLRP3 inflammasome, inflammatory signaling pathways, and oxidative stress. Furthermore, to evaluate the in vivo anti-inflammatory effect of Mast-M, an experimental acute gouty arthritis mouse model was established through intra-articular injection of MSU crystals.Results Mast-M treatment demonstrated significant inhibition of the phosphorylation of MAPKs/NF-κB signaling pathways and reduction in oxidative stress expression in LPS and MSU-induced THP-1 macrophages. This resulted in the suppression of downstream NLRP3 inflammasome activation and IL-1β release. In vivo, Mast-M effectively attenuated the inflammation induced by MSU in mice with gouty arthritis. Specifically, Mast-M reduced swelling in the paws, inhibited the infiltration of neutrophils and macrophages into periarticular tissue, and decreased the activation of the NLRP3 inflammasome and IL-1β production.Conclusion Mast-M significantly improves gouty arthritis, and its potential mechanism may be achieved by inhibiting the MAPK/NF-κB pathway and alleviating oxidative stress, thus suppressing the activation of NLRP3 inflammasomes.
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JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2023
·
IF 2.6
Jian Chen,Mei Dong,Wenjing Shi,Danni Zhao,Wensheng Li,Haoran Liu,Weiping Luo
In this study, the solubility of isophthalic acid (IPA) and m-toluic acid (m-TA) in eight monobasic alcohols, methanol, ethanol, 1-propanol, iso-propanol, 1-butanol, iso-butanol, tert-butanol, and 2-butanol is measured under 101.3 kPa by the method of laser dynamics. The experimental temperature range is 294.35–360.75 K. The measured data showed that the solubility of IPA and m-toluic acid increased with the increase of temperature in the measured temperature range. At the same temperature, the solubility of m-toluic acid in the same pure solvent is higher than that of IPA. The solubility of IPA and m-toluic acid in eight solvents decreased with the increase of the number of carbon atoms of the solvent. At the same temperature, the solubility ratio of m-toluic acid to IPA in iso-butanol is the highest in the same solvent, and the ratio was greater than 70, making it the best solvent for separating IPA and m-toluic acid. The Apelblat model, the Buchowski–Ksiazczak λh model, and the modified nonrandom two-liquid activity coefficient model were used to correlate the experimental data, and the calculated solubility was in good agreement with the measured result. The calculated solubilities were in good fit with the measured results. The thermodynamic properties were calculated, and the main contributor of the standard molar Gibbs energy of IPA and m-toluic acid in eight alcohols is enthalpy, about 55.40 to 82.86%.
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International Journal of Electrochemical Science
·
2023
·
IF 1.5
Kangquan Qiao,Ying Zeng
The inhibition effect of Diantipyrylmethane (DAM) and its synergistic effect with potassium thiocyanate (KSCN) on mild steel corrosion in 1 M HCl solution were investigated by electrochemical methods, gravimetric analysis and scanning electron microscopy (SEM). The experiment results show that the inhibition efficiency increases with the concentration of DAM alone and increases further with the presence of 2 mM KSCN. The synergism parameters demonstrate that DAM cation has a significant synergistic effect with thiocyanate anion, which is agree with the corresponding thermodynamic and kinetic parameters. The results of quantum chemical calculation confirm that the dication structure of DAM molecule in acid medium plays a vital role during corrosion inhibition of mild steel.
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