International Journal of Electrochemical Science
·
2023
·
IF 1.5
Lin Liu,Guifang Wang,Qingqin Feng,Yun Xing,Hongxing Han,Min Jing
Sandwich-type biosensor is one of the major analytical techniques for sensitive and selective detection of biomolecules. In this format, the crucial step is the capture and identification of analytes. In this work, we reported a sandwich-type electrochemical biosensor for the detection of dopamine (DA). Nitrilotriacetic acids complexing Fe(III) were immobilized onto gold electrodes to capture DA. The amino groups of DA were derivatized by biotin for the attachment of gold nanoparticle/streptavidin conjugates capped with multiple ferrocene tags. Well-defined voltammetric peaks of high signal intensity were obtained. DA concentrations ranging from 0.5 to 20 nM can be readily determined. A detection limit of 0.1 nM was achieved, which is lower than those achievable using the modified electrodes reported so far. This method was demonstrated to be highly sensitive, accurate and reproducible.
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2022
·
IF 12.92
Liujing Yang,Chuanqi Cheng,Xun Zhang,Cheng Tang,Kun Du,Yuanyuan Yang,Shan-Cheng Shen,Shi-Long Xu,Peng-Fei Yin,Hai-Wei Liang,Tao Ling
Electrocatalytic reduction of nitrogen into ammonia (NH 3 ) is a highly attractive but challenging route for NH 3 production. We propose to realize a synergetic work of multi reaction sites to overcome the limitation of sustainable NH 3 production. Herein, using ruthenium-sulfur-carbon (Ru-S-C) catalyst as a prototype, we show that the Ru/S dual-site cooperates to catalyse eletrocatalytic nitrogen reduction reaction (eNRR) at ambient conditions. With the combination of theoretical calculations, in situ Raman spectroscopy, and experimental observation, we demonstrate that such Ru/S dual-site cooperation greatly facilitates the activation and first protonation of N 2 in the rate-determining step of eNRR. As a result, Ru-S-C catalyst exhibits significantly enhanced eNRR performance compared with the routine Ru-N-C catalyst via a single-site catalytic mechanism. We anticipate that our specifically designed dual-site collaborative catalytic mechanism will open up a new way to offers new opportunities for advancing sustainable NH 3 production.
✓ 已验证
产品关联
DOI
高影响因子
European Physical Journal Plus
·
2022
·Vol. 137
·期 11
·1-10
·
IF 3.758
Zhang Zhen,Fu Lijuan,Yao Shun,Cheng Jiang,Li Lu,Tang Hua
Back surface recombination could have some adverse effects on superstrate antimony selenide (Sb 2 Se 3 ) solar cells. Anode interface modification, such as inserting a buffer layer with appropriate energy-level matching, is necessary. Here, a novel interfacial material, pyrolytic ammonium metatungstate (PAMT), prepared by spray pyrolysis deposition, was introduced to modify the back contract of antimony selenide solar cells. Morpho-structural and thermal analysis showed that this material is different from crystalline molybdenum oxide powder. Monology characterization showed that PAMT preferentially fills the space of the Sb 2 Se 3 grain boundary. The J–V test showed that this layer improved the interfacial contract between the absorber and the back electrode. The PAMT layer showed suitable energy matching with Sb 2 Se 3 , providing an effective channel for hole carriers transport from the absorber to the anode, and largely reducing back contact surface recombination. As a result, the PAMT-modified Sb 2 Se 3 device exhibited a much higher photovoltaic performance, significantly improving the efficiency from 5.27% to 6.11%. Graphical Abstract
✓ 已验证
产品关联
DOI
高影响因子
NEW CARBON MATERIALS
·
2022
·
IF 3.7
Hui-nian Zhang,Hui-qi Wang,Su-ping Jia,Qing Chang,Ning Li,Ying Li,Xiao-lin Shi,Zi-yuan Li,Sheng-liang Hu
Developing highly selective, economical and stable catalysts for the electrochemical conversion of CO 2 into value-added carbon products to mitigate both CO 2 emission and the energy crisis is challenging. We report an efficient and robust electrocatalyst for the CO 2 reduction reaction (CO 2 RR) by embedding CoN 4 active sites in a graphene matrix. These highly dispersed CoN 4 sites show an extraordinary CO 2 RR activity, with a high CO Faradaic efficiency of nearly 95% at −0.76 V (vs. RHE) and remarkable durability. The corresponding overpotential is 0.65 V. Our finding could pave the way for the design at the atomic scale of highly efficient electrocatalysts for the CO 2 RR.
✓ 已验证
DOI
高影响因子
NEW CARBON MATERIALS
·
2022
·
IF 3.7
Song-Yuan Tang,Yong-Sheng Wang,Ya-Fei Yuan,Ya-Qi Ba,Li-Qiu Wang,Guang-Ping Hao,An-Hui Lu
Atmospheric water harvesting (AWH) is considered a promising technique to address the problem of global water shortage. Adsorption-based AWH technology, has the advantages of a simple device structure, high energy efficiency, wide application range, etc., and has attracted much attention. For the adsorption, one of the key issues is to find high-performance porous adsorbents. Porous carbons have exceptional stability, high porosity and low cost, but are usually highly hydrophobic with a low affinity for polar water molecules. A class of monolithic porous carbons with good hydrophilicity was prepared by the pyrolysis of composites consisting of a metal-organic framework in a resorcinol-formaldehyde resin matrix, in which the metal-organic parts developed polar sites in the final products. AWH tests showed that in a relative humidity of 40%-80%, the water capture capacity of the adsorbents reached 20 wt.%.
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2022
·
IF 12.92
Zhaopeng Liu,Youming Ni,Zhongpan Hu,Yi Fu,Xudong Fang,Qike Jiang,Zhiyang Chen,Wenliang Zhu,Zhongmin Liu
The utilization of metal oxide-zeolite catalysts in the syngas-to-olefin reaction is a promising strategy for producing C 2 –C 4 olefins from non-petroleum resources. However, the effect of the crystal phase of metal oxides on the catalytic activity of these oxides is still ambiguous. Herein, typical metal oxides (ZnO/ZrO 2 ) with different crystal phases (monoclinic ( m -ZrO 2 ) and tetragonal ( t -ZrO 2 )) were employed for syngas conversion. The (ZnO/ m -ZrO 2 +SAPO-34) composite catalyst exhibited 80.5% selectivity for C 2 –C 4 olefins at a CO conversion of 27.9%, where the results are superior to those (CO conversion of 16.4% and C 2 –C 4 olefin selectivity of 76.1%) obtained over (ZnO/ t -ZrO 2 +SAPO-34). The distinct differences are ascribed to the larger number of hydroxyl groups, Lewis acid sites, and oxygen defects in ZnO/ m -ZrO 2 compared to ZnO/ t -ZrO 2 . These features result in the formation of more formate and methoxy intermediate species on the ZnO/ m -ZrO 2 oxides during syngas conversion, followed by the formation of more light olefins over SAPO-34. The present findings provide useful information for the design of highly efficient ZrO 2 -based catalysts for syngas conversion.
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2022
·
IF 12.92
Hui Yang,Jin feng Zhang,Kai Dai
Achieving a strong redox ability and high visible-light absorption ability in a single semiconductor material is difficult. Designing a heterojunction between two semiconductor materials is a feasible method. The new step (S-scheme) heterojunction can effectively promote the separation and transfer of photogenerated electron-hole pairs and retain strong redox ability. We designed and prepared a CdSe 0.8 S 0.2 -diethylenetriamine (DETA)/SnNb 2 O 6 heterostructure material via the solvothermal method. When CdSe 0.8 S 0.2 -DETA and SnNb2O6 form an S-scheme heterojunction, 30%CdSe 0.8 S 0.2 -DETA/SnNb2O6 exhibits the highest CO production rate (17.31 μmol·g –1 ·h –1 ), which is factors of 2.8 and 4.8 higher than that of traditional solvothermal SnNb 2 O 6 (6.2 μmol·g –1 ·h –1 ) and CdSe 0.8 S 0.2 -DETA (3.6 μmol·g –1 ·h –1 ), respectively. X-ray photoelectron spectroscopy characterization data provided evidence that the transfer pathway of space charge in the CO 2 reduction process was in accordance with the S-scheme. This research provides a simple strategy through which one can optimize the band structure to promote the separation of photogenerated carriers and achieve a high efficiency of CO 2 reduction.
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2023
·
IF 16.5
Zhidong Wei,Jiawei Yan,Weiqi Guo,Wenfeng Shangguan
The light penetration effect will weaken the driving force of charge separation from phase to surface by the built-in electric field of nanoscale photocatalysts, like low-dimensional materials. Therefore, in this study, a novel nanoscale lamination catalyst design method was proposed using a polymeric carbon nitride (PCN)-nano polyhedral SrTiO 3 core-shell structure catalyst (PCN-SrTiO 3 ). The results showed that the nanoscale lamination effect could be generated by the formation of the N–Sr bond, which could regulate the built-in electric field of the PCN simultaneously. Moreover, detailed characterization indicated that the N–Sr bond, which facilitates the generation of N vacancies in PCN, could act as a novel channel for charge transfer. Both surface and interior core N-deficient PCN have been discovered, resulting in more positive and negative VB positions, respectively. Synchronously, the light absorption ability of the PCN-SrTiO 3 samples increased. Consequently, the enhanced photocatalytic overall water splitting could be ascribed to the synergism of the built-in electric field regulation caused by the N-Sr formation-induced nanoscale lamination effect, which was favorable for energy flow adaption on the spatiotemporal scale.
✓ 已验证
产品关联
DOI
高影响因子
Chinese Journal of Natural Medicines
·
2021
·
IF 3
Zheng-Ming QIAN,Zi WU,Qi HUANG,Chuan-Xi WANG,Guo-Yin TAN,Wen-Jia LI,Wan-Yang SUN,Gen-Pin LV,Hao GAO
An eco-friendly and fast HPLC method was developed for the determination of adenosine, inosine, guanosine and uridine in Cordyceps and related products (fermented mycelia of Hirsutella sinensis and Paecilomyces hepiali ). The sample was ultrasonically extracted using 0.5% phosphoric acid solutions for 2.5 min. Sample separation was performed on a Poroshell SB-Aq column (50 mm × 4.6 mm, 2.7 μm) using eco-friendly mobile phase consisting of formic acid and ammonium formate aqueous solution at a flow rate of 1.0 mL·min −1 . The detection wavelength was 260 nm. The developed HPLC method showed good linearity with correlation coefficients of 1.0000 in the test range. Good precision, repeatability and stability of this method were also observed (RSD ≤ 2.81%). The recovery ranged from 91.84%−105.19% (RSD ≤ 2.59%). Compared with reported methods, the current method did not use harmful organic solvent and took only 10.5 min. It obtained a high eco-score of 91 by the “Analytical Eco-Scale” tool. The developed method is eco-friendly and fast, which is suitable for the quality evaluation of Cordyceps and related products.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
·
2021
·
IF 2.917
Yan CHEN,Hao-yu ZHANG,Fu-ying WU,Ze SUN,Jia-guang ZHENG,Liu-ting ZHANG,Li-xin CHEN
Mn nanoparticles (nano-Mn) were successfully synthesized and doped into MgH 2 to improve its de/hydrogenation properties. Compared with MgH 2 , the onset desorption temperature of 10 wt.% nano-Mn modified MgH 2 was decreased to 175 °C and 6.7, 6.5 and 6.1 wt.% hydrogen could be released within 5, 10 and 25 min at 300, 275 and 250 °C, respectively. Besides, the composite started to take up hydrogen at room temperature and absorbed 2.0 wt.% hydrogen within 30 min at low temperature of 50 °C. The hydrogenation activation energy of MgH 2 was reduced from (72.5±2.7) to (18.8±0.2) kJ/mol after doping with 10 wt.% nano-Mn. In addition, the MgH 2 + 10 wt.% nano-Mn composite exhibited superior cyclic property, maintaining 92% initial capacity after 20 cycles.
✓ 已验证
产品关联
DOI
高影响因子
NEW CARBON MATERIALS
·
2026
·Vol. 41
·期 4
·928-944
·
IF 7.2
Yiming Wang,Kerou Qiu,Haidong Yu,Zhiqiang Hou,Haotian Chen,Jiahao Cheng,Yabin Zhang,Jinliang Zhu,Bingsuo Zou
Sodium-ion capacitors (SICs) are attractive candidates for low-cost and safe energy storage, but their practical development is limited by the sluggish Na + storage kinetics and structural instability of the anodes. Control of both the bulk structure and surface chemistry can address these limitations and achieve fast and durable sodium storage. We report a heteroatom-rich porous carbon (HRPC) produced from spores by hydrothermal pretreatment, low-temperature carbonization, and acid-mediated functionalization. Control of both the pore structure and surface chemistry enables rapid ion/electron transport, improved electrolyte wettability, and abundant Na + adsorption sites. Density functional theory calculations show the distinct contributions of different heteroatom configurations to sodium adsorption, providing mechanistic insights into the improved storage behavior. The HRPC anode has an ultrahigh reversible capacity of 446.1 mAh g −1 at 50 mA g −1 , retaining 237.3 mAh g −1 at 2 A g −1 , and has an excellent cycling stability. A full SIC assembled with a polyaniline-derived porous carbon cathode has an energy density of 114.4 Wh kg −1 at 290 W kg −1 and an 84.3% capacity retention after 5000 cycles. This work establishes a scalable and sustainable route for converting biomass into high-value carbon anodes by controlling both the pore structure and surface chemistry, and providing a new way to provide high-performance sodium-ion energy storage. Download: Download high-res image (96KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
Chinese Journal of Natural Medicines
·
2023
·
IF 4.6
Pan TANG,Dan HUANG,Kai-Xuan ZHENG,Dan HU,Ping DAI,Chuan-Hui LI,Sheng-Ying QIN,Guo-Dong CHEN,Xin-Sheng YAO,Hao GAO
From the fungus Trichoderma sp . , we isolated seven novel 18-residue peptaibols, neoatroviridins E-K ( 1−7 ), and six new 14-residue peptaibols, harzianins NPDG J-O ( 8−13 ). Additionally, four previously characterized 18-residue peptaibols neoatroviridins A-D ( 14−17 ) were also identified. The structural configurations of the newly identified peptaibols ( 1−13 ) were determined by comprehensive nuclear magnetic resonance (NMR) and high-resolution electrospray ionization tandem mass spectrometry (HR-ESI-MS/MS) data. Their absolute configurations were further determined using Marfey’s method. Notably, compounds 12 and 13 represent the first 14-residue peptaibols containing an acidic amino acid residue. In antimicrobial assessments, all 18-residue peptaibols ( 1 − 7 , 14 − 17 ) exhibited moderate inhibitory activities against Staphylococcus aureus 209P, with minimum inhibitory concentration (MIC) values ranging from 8−32 μg·mL −1 . Moreover, compound 9 exhibited moderate inhibitory effect on Candida albicans FIM709, with a MIC value of 16 μg·mL −1 .
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）