JOURNAL OF CHROMATOGRAPHY A
·
2015
·
IF 4.169
Lulu Shangguan,Lingyi Zhang,Zhichao Xiong,Jun Ren,Runsheng Zhang,Fangyuan Gao,Weibing Zhang
The bottom-up strategy of proteomic profiling study based on mass spectrometer (MS) has drawn high attention. However, conventional solution-based digestion could not satisfy the demands of highly efficient and complete high throughput proteolysis of complex samples. We proposed a novel bi-enzymatic reactor by immobilizing two different enzymes (trypsin/chymotrypsin) onto a mixed support of hybrid organic–inorganic monolith with SBA-15 nanoparticles embedded. Typsin and chymotrypsin were crossly immobilized onto the mixed support by covalent bonding onto the monolith with glutaraldehyde as bridge reagent and chelation via copper ion onto the nanoparticles, respectively. Compared with single enzymatic reactors, the bi-enzymatic reactor improved the overall functional analysis of membrane proteins of rat liver by doubling the number of identified peptides (from 1184/1010 with trypsin/chymotrypsin enzymatic reactors to 2891 with bi-enzymatic reactor), which led to more proteins identified with deep coverage (from 452/336 to 620); the efficiency of the bi-enzymatic reactor is also better than that of solution-based tandem digestion, greatly shorting the digestion time from 24 h to 50 s. Moreover, more transmembrane proteins were identified by bi-enzymatic reactor (106) compared with solution-based tandem digestion (95) with the same two enzymes and enzymatic reactors with single enzyme immobilized (75 with trypsin and 66 with chymotrypsin). The proteolytic characteristics of the bi-enzymatic reactors were evaluated by applying them to digestion of rat liver proteins. The reactors showed good digestion capability for proteins with different hydrophobicity and molecular weight.
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DOI
PubMed
高影响因子
CARBON
·
2025
·
IF 11.6
Tianyu Zhang,Yang Hong,Xiaolei Shi,Hongchao Zheng,Jingyang Li,Wenjing Wei,Kai Cui,Yang Li,Wei Qin,Xiaohong Wu
Developing lightweight packaging materials with high radiation protection efficiency for MOSFET radiation hardening is highly significant for enhancing the radiation resistance of MOSFETs in space radiation environments. This work presented lightweight Bi-GdF 3 /Ti 3 C 2 T x aerogel (BGTA) with high electron radiation protection efficiency (RPE) through self-assembly and directional freezing. Subsequently, a radiation hardened MOSFET was obtained by packaging with BGTA. The resulting BGTA packaging material demonstrates excellent electron protection efficiency (92.23 %) compared to conventional Al packaging materials (23.80 %) at the same areal density. Meanwhile, the BGTA-packed MOSFET shows outstanding radiation resistance, exhibiting a much smaller negative threshold voltage drift value of 0.10 V compared to the Al-packed MOSFET (1.17 V). The electron shielding mechanism of BGTA was analyzed and elucidated by FASTRAD simulation on a micro scale. Due to the synergistic effect of the honeycomb aerogel structure and Bi/GdF 3 functional filler in BGTA aerogel, the incident electrons are effectively attenuated, thereby reducing radiation damage to the SiO 2 layer of the MOSFET and improving the radiation resistance of the MOSFET. Theoretical calculation results substantiate that the BGTA-packed MOSFET exhibits lower threshold voltage shifts and trapped charges. This work presents a lightweight and highly efficient MXene aerogel packaging material for MOSFET radiation hardening.
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高影响因子
Journal of Magnesium and Alloys
·
2023
·
IF 17.6
Junjun Wang,Ruohan Yu,Jianxiang Wang,Juncai Long,Fan Qiao,Lei Zhang,Guanjie He,Qinyou An,Liqiang Mai
Bismuth has garnered significant interest as an anode material for magnesium batteries (MBs) because of its high volumetric specific capacity and low working potential. Nonetheless, the limited cycling performance (≤100 cycles) limits the practical application of Bi as anode for MBs. Therefore, the improvement of Bi cycling performance is of great significance to the development of MBs and is also full of challenges. Here, Bi nanoparticles encapsulated in nitrogen-doped carbon with single-atom Bi embedded (Bi@NC) are prepared and reported as an anode material for MBs. Bi@NC demonstrates impressive performance, with a high discharge capacity of 347.5 mAh g −1 and good rate capability (206.4 mAh g −1 @500 mA g −1 ) in a fluoride alkyl magnesium salt electrolyte. In addition, Bi@NC exhibits exceptional long-term stability, enduring 400 cycles at 500 mA g −1 . To the best of our knowledge, among reported Bi and Bi-based compounds for MBs, Bi@NC exhibits the longest cycle life in this work. The magnesium storage mechanism of Bi@NC is deeply studied through X-ray diffraction, transmission electron microscopy and X-ray photoelectron spectroscopy. This work provides some guidance for further improving the cycling performance of other alloy anodes in MBs.
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JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Hongge Cao,Yuhang Wu,Ruicai Gao,Peijie He,Qiang Wu,Jixiang Cui,Longyan Gu,Tuo Cai,Ping Peng,Yan Lei,Yuan Lin,Zhi Zheng
Ag 2 S colloidal quantum dots (CQDs) are promising candidates for solution-processable and eco-friendly solar cell applications, but the power conversion efficiency is still far from its theoretical value (∼30 %). Where the migration of Ag ions in Ag 2 S CQDs may be responsible for this. In this work, to suppress the migration of Ag ions and further enhance the photoelectric properties of the Ag 2 S CQDs, Bi elements have been doped into the Ag 2 S CQDs via a facile route at low temperature. Without heat, the Bi content in the resulting Bi-doped Ag 2 S CQDs can be adjusted by adding raw BiI 3 in the reaction system. The photoelectric responsivity of Bi-doped Ag 2 S CQDs is about 6 times greater than that of the undoped Ag 2 S CQDs. Finally, solid-state solar cells have been constructed, and 1.5 % power conversion efficiency has been obtained. Current work may provide an avenue to produce high-quality Ag 2 S CQD-based photoelectric materials.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
·
IF 5.4
Runlin Han,Faxiang Feng,Zanming Zhu,Shi Su,Jingjing Wang,Chuxuan Shi,Guilin Dong,Hongbo Gu
The development of photocatalytic membranes with high efficiency for the treatment of organic pollutants such as dyes and antibiotics is essential due to the complexity of the harmful components in the wastewater. In this work, the cellulose acetate/bismuth oxychloride (CA/BiOCl) nanocomposite membrane was in-situ generated by the immersion phase inversion method for photocatalytic degradation of antibiotics and photoresponsive antibiosis. The results show that this CA/BiOCl nanocomposite membrane exhibits an excellent hydrophilicity with a water contact angle of 38.9° and a water flux of 2.66 × 10 4 L (m –2 h –1 bar –1 ). It depicts a high efficiency for the photocatalytic degradation of 97.6 % of tetracycline (TC) within 11 h. Effects of initial TC concentration and pH of solution on the performance of membrane are studied in detail. The membrane also demonstrates a superb cyclic stability, and the degradation efficiency remains 93.6 % after five cycles of recycling. It is found that the photocatalytic degradation of TC is mainly induced by superoxide radicals (·O 2 – ) and holes (h + ). Besides, the membrane also exhibits good photoresponsive antimicrobial properties under light irradiation. Our work provides novel insights on the multifunctional BiOCl-based materials for wastewater treatment.
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ACTA MATERIALIA
·
2025
·
IF 9.3
Ziming Zhang,Chen Ming,Qingfeng Song,Lei Wang,Hanbing Chen,Jincheng Liao,Chao Wang,Lidong Chen,Shengqiang Bai
Mg 3 (Sb,Bi) 2 -based Zintl compounds are rising stars with superior features of high thermoelectric (TE) performance, nontoxicity and low cost. However, the poor thermodynamic stability hinders its practical application. Here, we propose a design strategy of modulating the local chemical composition with grain boundary (GB) phase guided by computational phase equilibrium diagrams. By in-situ constructing ZrSb 1- x second phase in the GB regions of Mg 3 (Sb,Bi) 2 -based compounds, the migration of Mg is blocked and the Mg deletion is depressed. Benefit from these, the driving force of Mg diffusion from matrix to GB and Mg migration along GBs is weakened, resulting in an improved thermal stability without degradation of electrical transport properties. The fabricated 8-pair TE module using GB modulated n-type Mg 3.1 Sb 1.5 Bi 0.49 Te 0.01 and p-type Ge 0.89 Cu 0.06 Sb 0.08 Te presents an efficiency of 8.9 % under the temperature difference of 450 K and shows excellent durability in the thermal cycling test. This study provides an effective strategy to improve thermal stability by constructing GB phase, and proves the feasibility of the practical application for Mg 3 Sb 2 -based TE modules.
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高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Chaojun Liu,Yidong Jiang,Xin Gu,Jiongyuan Huang,Wei Yan,Kongfa Chen,Yixiang Shi,Jiujun Zhang
Liquid metal electrodes are attractive in the field of energy storage due to their remarkable attributes such as high safety, cost effectiveness, extended lifespan, and high energy density. In this study, we develop a liquid bismuth–air battery owing to the advantageous oxygen ion conductivity offered by bismuth trioxide (Bi 2 O 3 ). Meanwhile, a Sb 2 O 3 –CuO–SnO 2 ceramic with corrosion resistance and stable conductivity in both reductive Bi and oxidizing Bi 2 O 3 are employed as the anode current collector. Impedance spectrum analysis and cross-sectional microscopic characterization are consistent with the formation of a heterogeneous Bi–Bi 2 O 3 architecture, which may provide mixed ionic–electronic conduction within the anode during discharge. This behavior, as inferred from morphological and electrochemical data, correlates with a volumetric specific capacity of 3580 mAh/cm 3 (94.6 % of the theoretical capacity) and an areal capacity of 2326 mAh/cm 2 under the tested conditions. The high areal and volumetric capacities, together with stable operation observed for >200 h in our tests, indicate the potential of liquid Bi–air batteries for high-density, high-temperature energy storage.
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高影响因子
Catalysts
·
2025
·Vol. 15
·期 11
·
IF 4
Juan Du,Wanting Qiu,Sunbal Ayaz,Jian Long,Wenze Guo,Ling Zhao,Zhenhao Xi
2,5-furandicarboxylic acid (FDCA), a high-value biomass-derived monomer, serves as a crucial building block for sustainable polymers including polyesters, polyamides, and polyurethanes. This study systematically investigated the catalytic oxidation of 5-hydroxymethylfurfural (HMF) to FDCA over Pt/Al2O3and Pt–Bi/Al2O3catalysts. The 5Pt/Al2O3catalyst yielded 60.6% FDCA after 12 h under optimized conditions (80 °C, 0.1 MPa O2, 1 equiv. Na2CO3). Remarkably, Bi-modified 5Pt–1Bi/Al2O3catalyst dramatically enhanced catalytic performance, achieving 94.1% FDCA yield within 6 h under optimized conditions (80 °C, 1.5 MPa O2, 2 equiv. Na2CO3). Comprehensive characterization revealed that the exceptional activity originates from Bi–O–Pt interactions that modulate the electronic structure and oxidation state of Pt active sites, which facilitates the oxidation of intermediate 5-formyl-2-furancarboxylic acid (FFCA) to FDCA, the rate-limiting step of HMF oxidation. This work demonstrates an efficient Bi-promoted Pt catalytic system for FDCA production with significant potential for industrial application.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Ying Xu,Zhiwen He,Shuili Yu,Lei Li,Luyang Cai,Peng Yi
Recently, the heterogeneous advanced reduction processes (ARPs) for bromate (BrO 3 - ) degradation have attracted considerable attention due to its stable performance and easy combination with UV disinfection. In this study, a UV/TiO 2 -Bi advanced reduction process (ARP) was established for BrO 3 - removal without adding external sacrificial agents. In the UV/TiO 2 -Bi ARP, Bi nanoparticles (NPs) doped on the TiO 2 acted as hole trapping centers, while TiO 2 NPs were used as reduction centers for the reduction of BrO 3 - , which enhanced the charge carrier separation. The UV/TiO 2 -Bi-1% ARP exhibited the highest BrO 3 - removal rate without the addition of sacrificial agents in the reaction solution compared to UV/TiO 2 ARP and the UV/TiO 2 -Bi ARP at other Bi/Ti ratios. The result of 72% removal of 200 µg/L BrO 3 - at 60 min by 0.2 g/L TiO 2 -Bi-1% in tap water at pH 6.8 and 7.71 mg/L dissolved oxygen (DO) demonstrates the promising potential of the UV/TiO 2 -Bi ARP for the removal of BrO 3 - in practical applications. Compared to the 99.5% removal in deionized (DI) water at 60 min, lower BrO 3 - reduction in tap water was likely attributed to the consumption of photo-generated electrons by NO 3 – and the adsorption of natural organic matter on the surface of TiO 2 -Bi-1% nanocomposites. The study provides not only a novel BrO 3 - removal system with good photo-reduction performance, but also some guidance for the influence of constituents in raw water on the treatment of BrO 3 - .
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JOURNAL OF CONTROLLED RELEASE
·
2021
·
IF 9.776
Yudi Deng,Zhijie Jiang,Yincheng Jin,Jianan Qiao,Shan Yang,Hui Xiong,Jing Yao
Detrimental tumor microenvironment (TME) relies on distorted tumor vasculature for further tumor expansion. Vascular normalization therapy partly improves TME through vessel repairing, while these therapies enter an unbreakable Möbius ring due to each attempt hindered by pro-angiogenic factors from TME, leading to limited duration and extent of vascular normalization. Here, we developed a nanosystem including FLG and MAR/MPA nanodrugs to regulate both tumor vasculature and TME. FLG nanodrugs were constructed by connecting VEGF/VEGFR2 inhibitory low molecular weight heparin and gambogic acid with F3 peptide decoration for directly regulating on vascular endothelial cells and inducing vascular normalization. Meanwhile, MAR/MPA nanodrugs encapsulating CCL5/CCR5 blocker maraviroc were designed to restrict cytokine functions of angiogenesis and TME deterioration, contributing to vasculature repairing and TME reconstruction. Our results demonstrated this combined nanosystem synergistically induced vascular normalization window lasting 9 days and restored vascular permeability and oxygen supply in Panc-1 tumor. Furthermore, in melanoma, our nanosystem achieved immune improvements with increased infiltration of CD4 + and CD8 + T cells in a remodeled TME. The two nanodrugs assisting each other in terms of both vascular repairing and TME improvements successfully reversed the vicious crosstalk to a positive one, achieving overall TME remodeling and promoting therapeutic efficiency.
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DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Qi Wang,Ningyi Li,Meng Tan,Man Deng,Guoxiang Yang,Qiang Li,Hao Du
Photocatalysis is an emerging technique for the remediation of refractory organic contaminants. Herein, a novel dual Z-scheme Bi/BiOI-Bi 2 O 3 -C 3 N 4 heterojunctions were constructed through a calcining process following with I − etching and UV-reduction processes. Various analytical technologies were adopted to characterize the materials. As a result, the Bi 0 decorated composite presented improved visible-light-response and rapid charge transfer. Due to the synergy of Bi 0 and dual Z-scheme heterostructures, a remarkable photocatalytic performance toward phenol degradation was achieved with the highest degradation efficiency of 93.2% and rate constant of 0.0161 min −1 over the optimal composite within 75 min of visible light irradiation. Interestingly, the concentration of the yielded benzoquinone considerably decreased with the introduction of C 3 N 4 . Trapping experiments and electron spin resonance (ESR) tests indicated that h + , O 2 − , OH and e − contributed to phenol remediation, and h + and O 2 − were the crucial species toward phenol degradation. Furthermore, outstanding stability was obtained only with a decline of 3.8% after 4 cycles. A reasonable charge transfer mechanism was also proposed. This work provides a new route for in situ construction of Bi 0 decorated dual Z-scheme heterojunction for phenolic compounds degradation.
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高影响因子
NANOTECHNOLOGY
·
2018
·Vol. 30
·期 7
·075402
·
IF 3.404
Lulu Chen,Wenxiu Yang,Xiangjian Liu,Ling Long,Dandan Li,Jianbo Jia
The design of high-efficient and durable bi-functional oxygen electrocatalysts is still a great challenge. In this work, novel Co9S8 nanoparticles/N,S-codoped defect-rich carbon nanotubes (Co9S8/N,S-CNTs) were fabricated by an ingenious template method. CdS nanowires, as a sacrificial template, can be removed simultaneously during the carbonization process without additional post-treatments. The large BET surface area (661.2 m2 g−1) and pore volume (1.49 cm3 g−1) of Co9S8/N,S-CNTs could largely enhance the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) activities by facilitating the mass transportation and exposing more active sites. The abundant defects produced by the evaporation of Cd and S doping could provide more active sites for ORR and OER. Coupling with Co9S8, Co9S8/N,S-CNTs possesses more defects in the carbon skeleton, better electron conductivity, and larger effective electrochemical area. Co9S8/N,S-CNTs not only performs excellent ORR activity with a half-wave potential of 0.821 V but also owns RuO2-like OER activity in alkaline solution. The potential difference (ΔE) between ORR and OER is as low as 0.78 V in 0.10 M KOH. The excellent bi-functional performance enables the potential to be utilized in fuel cells and metal-air batteries.
研究领域:
材料科学
·
电化学
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危险品化学品经营许可证（带存储）