ANALYTICA CHIMICA ACTA
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2020
·
IF 5.977
Ruizhi Tang,Yang Yu,Jing Dong,Yating Yao,Shujuan Ma,Junjie Ou,Mingliang Ye
In bottom-up strategy, specific enrichment of glycopeptides and phosphopeptides from complicated biological samples is a prerequisite for efficient identifying glycosylation and phosphorylation by mass spectrometry . Although there were a plethora of materials used as either hydrophilic interaction liquid chromatography (HILIC) or immobilized metal affinity chromatography (IMAC) adsorbents, even several bifunctional materials for simultaneous enrichment of glycopeptides and phosphopeptides, most of them are not easily commercialized as many other well-performing adsorbents due to the complicated preparation process. In our case, a one-step modification strategy was developed to prepare bifunctional adsorbents for HILIC and IMAC, employing O -phospho- l -serine as the modifier and poly(GMA- co -EDMA) microspheres, a kind of macroporous adsorption resin (MAR) with epoxy groups , as the matrix. The MARs were directly modified with O -phospho- l -serine under facile condition for HILIC strategy and further chelated with Ti 4+ for IMAC strategy. A total of 522 unique N -glycopeptides and 442 unique N -glycosylation sites mapped to 275 N -glycoproteins was identified from HeLa cell proteins, showing excellent enrichment efficiency in HILIC. Additionally, 3141 unique phosphopeptides were unambiguously identified from 200 μg of digest of HeLa cell proteins, demonstrating great enrichment efficiency in IMAC. Moreover, these materials have been successfully applied in the analysis of multiple biological samples including human serum and milk, demonstrating their feasibility for real sample applications and potential business value.
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高影响因子
JOURNAL OF PHYSICS D-APPLIED PHYSICS
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2019
·Vol. 52
·期 29
·295502
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IF 2.829
Binbin Qian,Chaodeng Liu,Junmin Xu,Qingqing Sun,Huige Yang,Wentao Liu,Li Zhang,Takeo Minari,Xuying Liu,Jinzhou Chen
Three-dimensional (3D) nitrogen-doped graphene frameworks contributing to high-efficiency and high-stability Li-S batteries have received wide interest in energy storage fields. Herein, a 3D nitrogen-doped graphene composite framework was prepared with spatial dendritic triamines as crosslinking interconnectors, and subsequently employed for Li-S batteries with high efficiency and stability. The nanoscale spatial network of triamine-bonded graphene as molecular spacers can enlarge the interlayer spacing and change surface topography, which allows the nanocomposites to inhibit phase separation and thus capture and homogeneously store well-dispersed sulfur nanocrystals at a high capacity exceeding 70%, even by a solution process. In our work, the composite of S@GO-TAPA as the cathode material delivers the highest initial discharge capacity of 965 mAh g−1. Besides that, an average coulombic efficiency of 91% is achieved after more than 100 cycles and 66.5% of the capacity remains, even after 100 cycles at 0.2 °C. The results suggest that the shuttle effect is remarkably suppressed. Therefore, the design strategy for cathode media is promising for fully solution-processing energy storage devices with printing, coating and spraying techniques.
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International Journal of Applied Mechanics
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2024
·
IF 2.9
Shahao Li,Yang Chen,Xiaofeng Li,Hongyan Yang,Mengze Lu,Wei Zhang,Chuanxia Jiang,Shuming Cui,Junkai Liang,Liqun Tang,Taolin Sun
Recently, vitrimers with a reversible N → B coordination dynamic structure have garnered interest not only for their self-healing and reprocessable properties but also for their hydrolytic stability. Reported vitrimers with N → B internal coordination dynamic structure were excessively rigid, limiting their stretchability and toughness. This study synthesized a cross-linking agent (DNCB) with a cyclic nitrogen-boron coordination structure. This agent was then used in copolymerization with n-butyl acrylate (BA) and 4-vinylphenylboronic acid (BOH) to create soft vitrimers. By systematically tuning the composition, soft vitrimers exhibit water resistance along with high viscoelasticity, stretchability, toughness, and adhesive properties against various substrates. The observed mechanical behavior is attributed to the rapid relaxation of N → B coordination bonds and slow relaxation of B-O bonds in boroxine within the polymer network. It is anticipated that these soft vitrimers will be applied in adhesives, flexible electronics, and soft robotics due to their favorable properties.
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MATERIALS LETTERS
·
2020
·
IF 3.204
Haiyan Zhang,Sen Liu
SnO 2 /Co 3 O 4 n-p heterojunctions have been prepared by organometallic chemistry-assisted approach, where holy Co 3 O 4 nanosheets and (CH 3 ) 2 SnCl 2 were used as precursors. It is found that the surface oxygen-containing species could be regulated by changing the ratio of Co 3 O 4 precursors and Sn-containing organic compound. Our present work is of importance because it provides a new and effective approach for construction of heterojunctions .
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Journal of Energy Chemistry
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2021
·
IF 9.676
Mengqi Zhou,Guoqiang Sun,Shuang-Quan Zang
The society’s urgent demand for environmentally friendly, safe and low-cost energy storage devices has promoted the research of aqueous zinc-ion batteries. However, the uneven deposition of Zn ions on anodes will lead to the growth of the dendrite and reduce the Coulombic efficiency as well as the lifespan of the devices. Herein, we construct an O,N-dual functionalized carbon cloth current collector via a simple hydrothermal strategy, in which the oxygen-containing functional groups and the N heteroatoms can regulate the transmission and deposition of Zn ions, respectively. The proposed synergistic strategy ensures the uniform distribution of Zn ions on the surface of the Zn anode and inhibits the formation of dendrites. The symmetric cell based on the O,N-dual doped carbon cloth presents superior cycling stability (318 h) with a low voltage hysteresis (11.2 mV) at an areal capacity of 1 mAh cm −2 (20% depth of diacharge). Meanwhile, the appreciably low overpotential (16 mV) and high Columbic efficiency (98.2%) also demonstrate that the O,N-dual functionalized carbon cloth can be worked as a promising host for Zn ions deposition.
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高影响因子
FUEL
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2022
·
IF 8.035
Jiaxiu Guo,Ting Shen,Juan Liang,Shulin He,Yue Jing,Yinghao Chu,Wanglai Cen
In this paper, an N -doped BiOCl photocatalyst was prepared and systematically characterized. The results showed that N doping does not change the crystal phase of BiOCl but changes the surface morphology of BiOCl nanosheets and increases specific surface area. N -doped BiOCl broadens the light absorption region, narrows the band gap and promotes the separation of the photoexcited carriers. N could be adsorbed on the Bi or to replace Cl atom in the BiOCl lattice, causing the generation of intermediate energy levels in the band gap of N -BiOCl including N 2p-Cl 2p hybrid states, N 2p-O 2p hybrid states or N 2p state. N -BiOCl achieves about 60% removal efficiency of NO under all-light irradiation and exhibits favorable stability and recyclability. The presence of some H 2 O in the reaction system promotes the photodegradation of NO, while O 2 greatly affects the efficiency of NO removal. Moreover, N doping promotes the formation of •O 2 − and •OH on N -BiOCl photocatalyst under all-light irradiation, resulting in the enhancement of photocatalytic oxidation of NO to NO 3 – . NO could be adsorbed on the surface of N -BiOCl or oxidized into NO 2 – under darkness and further oxidized into NO 3 – under all-light irradiation. However, the accumulation of the final product on the catalyst surface results in a decrease in photoactivity.
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Journal of Cleaner Production
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2022
·
IF 11.072
Shunan Yin,Jinxian Zhao,Shiping Wu,Xuhui Wang,Yanhong Quan,Jun Ren
Electrochemical reduction of CO 2 to valuable chemicals using electricity from renewable sources is a promising approach to realize the carbon cycle. Here, a novel bimetallic nitrogen-doped carbon catalyst (M-N-C, where M denotes the metal) CoCu–N–C electrocatalyst has been synthesized by pyrolyzing a copper-doped cobalt(II) acetate–phenanthroline complex formed from the metal acetates and 1,10-phenanthroline dissolved in ethanol. The optimal CoCu–N–C catalyst with molar ratio of Cu/(Co + Cu) = 0.15 displayed superior performance, enabling a faradaic efficiency of CO production of 76.5% at an overpotential of 0.57 V as well as an increased CO current density of 8.48 mA cm −2 at −0.98 V versus reversible hydrogen electrode (far superior than the Co–N–C of 4.20 mA cm −2 and Cu–N–C of 0.07 mA cm −2 ) and a decreased charge-transfer resistance compared with Co–N–C and Cu–N–C catalysts. The addition of Cu, which serves as a structure promoter to improve the dispersion of Co, thereby providing sufficient Co-N x active sites for the electrochemical CO 2 reduction reaction (CRR). Moreover, doping Cu changes the electronic environment around Co slightly and promotes the charge transfer capability so that reduces the energy barrier of potential-limiting energy, thereby improving the CRR performance of catalyst.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2020
·
IF 3.807
Xiuxian He,Zheng Tang,LianLian Gao,Fangyuan Wang,Jinping Zhao,Zhichao Miao,Xiaozhong Wu,Jin Zhou,Yang Su,Shuping Zhuo
Engineering graphene with efficient ion and electron transport properties is vital for development of high performance, next generation energy storage devices. The protocols generally involve pore generation and doping of graphene with the heteroatoms. Herein we report the realization of pore generation, control, and N-doping of graphene in one single process using reduced metal salt as etching agent and environment friendly N 2 gas as doping agent. Furthermore, we found the porous structure (pore size and density), the dopant bonding configuration and doping amount can be controlled by change the metal salt and nitrogen source, which allows us to investigate the influence of pore and N-doping structure of porous graphene (PG) in their supercapacitor performance . Specifically, the N-doping, PG prepared by Ni salt (PG-Ni) shows the smaller pore size (average pore size of ~20–30 nm) and larger pore density. PG-Ni exhibits high specific capacitance of 575 F/g along with the energy density of 51.2 Wh/kg at 0.5 A/g current density and also shows good rate, cycling performances. Considering the excellent performance, ease of the process, and pore structure controllability, we believe the method provides a new route for developing graphene based high performance supercapacitors.
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Journal of Energy Storage
·
2024
·
IF 8.9
Jingjing He,Ming Li,Xi Chen,Yang Wu,Jiahao Sun,Xiaogang Wen
N-doped pomelo peel-derived porous carbon (N-ppPC) is prepared by a combined hydrogel dispersion-activation and freeze-drying process. The obtained layered N-ppPC exhibits excellent capacitive behavior due to its suitable pore-structure and heteroatom doping level, thin layer-thickness as well as high specific surface area. It delivers a high specific capacitance (438 F g −1 at 0.5 A g −1 ) in a three-electrode system. For an assembled coin-type symmetric supercapacitor in aqueous electrolyte, the specific capacitance reaches 264 F g −1 (0.5 A g −1 ), and after 10,000 cycles at a current density of 2 A g −1 , the capacitance retention is as high as 90.9 %. While in ionic liquid electrolyte, the specific capacitance reaches 140 F g −1 (0.2 A g −1 ) with a capacitance retention of 62.9 % at a high current density of 10 A g −1 . Especially, it achieves a high energy density of 59.5 Wh kg −1 at a power density of 174.9 W kg −1 .
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ACS Applied Nano Materials
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2022
·
IF 6.14
Xiaoxiang Wu,Yali Liu,Mengge Li,Wenxuan Guo,Tianjian Ou,Cong Xiao,Jiadong Yao,Ying Yu,Yuan Zheng,Yewu Wang
Photodetectors based on two-dimensional materials and their van der Waals (vdW) heterojunctions usually have excellent optoelectronic performance and great potential applications. Herein, gallium (Aladdin, particles, 99.999% trace metal basis), selenium (Aladdin, powder, 99.999% trace metal basis), and iodine (Alfa Aesar, 99.999% trace metal basis) are the raw materials for the growth of gallium selenide (GaSe) single crystals by the chemical vapor transport method, in which iodine is the transport agent. Subsequently, GaSe nanoflakes are exfoliated from the grown bulk GaSe crystals by mechanical exfoliation. The n-Si/p-GaSe van der Waals vertical heterojunctions have been designed and fabricated for photodetection, which show good characteristics including a high responsivity of 1.74 A/W and a fast response/recovery time of 48 μs/88 μs under zero bias owing to their type-II band structure and built-in electric field. The results indicate that n-Si/p-GaSe vdW vertical heterojunctions are promising candidates in future ultrafast optoelectronic devices.
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AUSTRALIAN JOURNAL OF CHEMISTRY
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2013
·Vol. 66
·期 11
·1361-1369
·
IF 1.869
Yanyan Wang,Libin Liu,Congde Qiao,Tianduo Li
N-Alkyl-substituted polyurethanes with different alkyl chain lengths were prepared from the corresponding bromoalkane (1-bromooctane, 1-bromotetradecane, and 1-bromooctadecane) and polyurethane consisting of poly(propylene glycol) (PPG), 4,4′-diphenylmethane diisocyanate, and 1,4-butanediol. The synthesised materials were characterised by 1H NMR and FTIR spectroscopy and the degrees of substitution were discussed by changing the reaction conditions. Differential scanning calorimetry and X-ray diffraction were used to characterise the thermal properties and crystalline state. Microphase-separated nanostructures, with hard segments (nanofibre-like) embedded into amorphous PPG soft segments, are observed by atomic force microscopy and scanning electron microscopy. A reversible behaviour of the films was revealed by contact angle measurement. Stimuli-responsive films were realised by solvent vapour annealing and heat treatment, and exhibited a reversible switching in surface wettability with a remarkable change in the water contact angle of 21°.
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Journal of Materials Chemistry C
·
2015
·Vol. 3
·期 12
·2933-2939
·
IF 4.696
Li Wang,Hong-Wei Song,Zhen-Xing Liu,Xu Ma,Ran Chen,Yong-Qiang Yu,Chun-Yan Wu,Ji-Gang Hu,Yan Zhang,Qiang Li,Lin-Bao Luo
In this study, we reported on the construction of p–n junctions based on crystalline Ga-doped CdS–polycrystalline ZnTe nanostructures (NSs) for optoelectronic device application. The coaxial nano-heterojunction was fabricated by a two-step growth method. It is found that the absorption edge of CdS:Ga–ZnTe:Sb core–shell NSs red shifted to about 580 nm, compared with CdS nanowires (520 nm). The as-fabricated core–shell p–n junction exhibited obvious rectification characteristics with a low turn-on voltage of ∼0.25 V. What is more, it showed stable and repeatable photoresponse to 638 nm light illumination, with a responsivity and a detectivity of 1.55 × 103 A W−1 and 8.7 × 1013 cm Hz1/2 W−1, respectively, much higher than other photodetectors with similar device configurations. The generality of this study suggests that the present coaxial CdS:Ga–ZnTe:Sb core–shell nano-heterojunction will have great potential applications in future nano-optoelectronic devices.
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危险品化学品经营许可证（带存储）