INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Peikuan Wang,Tianran Zheng,Shuyang Gan,Jiayu Miao,Jianfeng Yao
Because of its wide range of material sources, high specific surface area, and advantageous electrochemical characteristics, cellulose biochar derived from natural lignocellulosic raw materials has been extensively applied as electrodes for energy storage materials. To produce carbon materials with improved qualities, lignocellulosic substrates often need to be pretreated, activated, and modified. In this study, corncob was processed with bisulfite to break down its recalcitrant structure, followed by direct use of the pretreated substrate to avoid the post-pretreatment washing step and take full advantage of the generated lignosulfonate (LS) in the next pyrolysis process. The residual LS in the pretreated sample not only increased the specific surface area of the corncob-biochar, but also introduced the heteroatom S. The biochar obtained through pyrolysis at 900 °C with KOH activation from unwashed pretreated corncob (ABU-900) had a specific surface area of 3130 m 2 /g, and it displayed a high coulombic efficiency of 94.1% after 5000 cycles in a three-electrode system. Owing to the successful introduction of heteroatoms, an asymmetric supercapacitor device (ABU-900//activated carbon) delivered an excellent specific capacitance of 141.2 F/g at a current density of 1 A/g and an energy density of 43.7 Wh/kg with a power density of 619 W/kg. This work offers a new and simple route for preparing cellulose biochar-based electrodes from lignocellulose waste.
研究领域:
材料科学
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能源存储
·
生物质利用
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DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2018
·
IF 2.88
Zhenxing Qin,Wenhai Wang,Xiaozhi Zhan,Xiujuan Du,Qingmei Zhang,Rui Zhang,Kun Li,Jinhong Li,Weiping Xu
Luminescent carbon-based nanoparticles , named often as carbon dots (CDs), were synthesized from citric acid (CA) and guanidine thiocyanate (GITC) via an N and S co-doped hydrothermal procedure. In the present structure characterization, N and S elements could be sufficiently doped by means of the heteroatom or the functional groups bonded on the surface of CDs. The as-prepared CDs solution showed blue color fluorescence under ultraviolet excitation, yet the PL spectra exhibited a repetitive emission process from excitation-independent to excitation-dependent. In view of the triexponential feature of fluorescence lifetimes of CDs, one possibility was proposed to be co-existence of two types of CDs with different surface states. Additionally, the as-prepared CDs were used as a sensing probe for the detection of Ag + taking into consideration of the possible interactions between Ag + and various fluorophores attached to the CD surface. As expected, the changes of fluorescence intensities were linearly proportional to the different concentration ranges of Ag + , which suggests the complex nature of the quenching mechanism. And for the first time, the S C N group was found to accelerate the quenching of CDs towards Ag + , promising a new approach for efficient detection of Ag + for the application in industrial pollutants.
研究领域:
材料科学
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分析化学
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产品关联
DOI
PubMed
高影响因子
ENERGY & FUELS
·
2024
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IF 5.2
Bo Zhang,Chunming Xu,Quan Shi,Yiqiang Li,Zheyu Liu,Jianxun Wu
Supercritical CO2 flooding is an efficient method of enhanced oil recovery in which CO2 injection can selectively extract light components and cause the deposition of residue heavy components in reservoir pores. Residues can change the wettability of the rock surface to ultimately reduce crude oil production. In this study, supercritical CO2 extraction experiments were conducted under identical operation conditions using various minerals, including quartz, montmorillonite, Illite, dolomite, albite, calcite, and chlorite. The crude oil, extracts, and residues were comprehensively characterized using high-temperature gas chromatography and high-resolution mass spectrometry. The results indicate that the extraction effect is influenced by the specific surface areas and adsorption strengths of various minerals. The larger the specific surface area, the more readily the heteroatoms in the resins can be adsorbed onto the rock surface. Quartz exhibits weak adsorption strength toward heteroatoms, whereas minerals with high specific surface areas demonstrate significantly higher adsorption strengths compared to those with lower specific surface areas. The wettability changes of various mineral surfaces were also assessed through contact angle measurements. Upon exposure to crude oil, a rock surface undergoes a transition from being water-wet to becoming oil-wet. Subsequently, it reverts back to being more water-wet due to supercritical CO2 extraction which further proves the feasibility of alleviating channeling by injecting water. Furthermore, the alteration in wettability caused by the change in the carbon number of different heteroatoms under supercritical CO2 extraction is also investigated. This study provides a basis for the mechanism study of CO2–crude oil–rock interaction and a comprehensive understanding of the wettability alteration of different reservoirs in carbon dioxide flooding.
研究领域:
石油工程
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化学工程
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2018
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IF 5.091
Dan Yu,Yushuang Ma,Mingfeng Chen,Xiaoping Dong
Biomass precursors with natural porous structure and multifarious heteroatoms are desirably sustainable precursors for synthesis of carbon materials for energy and environmental applications. Herein, we reported wax gourd based porous carbons (WGPCs) with developed micro/mesoporous structures via potassium hydroxide (KOH) chemical activation . The optimized material that is denoted as WGPC-4 exhibits high specific surface area (2919 m 2 g −1 ) with oxygen and nitrogen contents of 17.9 at.% and 1.0 at.%, respectively. In a three-electrode system, the WGPC-4 electrode presents high specific capacitance of 333 F g −1 at current density of 1 A g −1 . Meanwhile, the assembled symmetrical cell using aqueous electrolyte (0.5 M Na 2 SO 4 ) has high specific capacitance (167 F g −1 at 1 A g −1 ), stable cycling characteristics (93% capacitance retaining after 5000 runs) and excellent energy density of 19.2 Wh kg −1 . Furthermore, these WGPC-4 electrodes were assembled into an all-solid-state supercapacitor using KOH/polyvinyl alcohol (PVA) gel as solid electrolyte , whose specific capacitance is 258 F g −1 at 1 A g −1 , retention at the 2500th run is 87% and energy density is 13.0 Wh kg −1 under a high power density. These materials with excellent structural characteristics are an ideal candidate for high-performance supercapacitors .
研究领域:
材料科学
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能源与环境科学
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DOI
高影响因子
Surfaces and Interfaces
·
2025
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IF 6.3
Jun Sun,Bo Ran,Ping Hu,Jialu Fang,Qihua Sun,Zhaofeng Wu,Haiming Duan
For the first time, egg custard, typically considered a potential carbon material, was transformed into gas-sensing materials using an eco-friendly, inexpensive, and straightforward carbonization process. Detailed examination proved that the carbonized egg custard at 600 °C exhibited a hollow configuration with nanoscale pores, greatly enhancing the surface area for gas adsorption. Furthermore, heteroatoms self-doped biomass-derived carbon materials can offer a plentiful supply of reactive sites and modify the material's shape to facilitate gas adsorption. The carbonized egg custard sensor showed good selectivity, repeatability, and a moderate response-recovery cycle to NH 3 . Density functional theory calculations further confirmed that doping with trace heteroatoms enhances the adsorption of O 2 and NH 3 molecules. This work provides a novel and sustainable approach for converting egg custard into biomass-derived carbon materials with promising gas-sensing applications.
研究领域:
材料科学
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环境科学
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化学工程
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产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2022
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IF 4.598
Liping Feng,Yunzhen Chang,Hua Song,Wenjing Hou,Yanping Li,Yun Zhao,Yaoming Xiao,Gaoyi Han
Introducing fast pseudo-capacitance is an effective strategy to improve the capacitive performances of carbon-based materials. Here, thiourea is used as nitrogen and sulfur source to dope resorcinol formaldehyde polymer. Besides the forming of copolymer of thiourea and resorcinol formaldehyde resin, the thiourea resin also acts as template to adjust the hierarchical microstructure. The N, S co-doped porous carbon exhibits specific surface area of 3599.0 m 2 g −1 and wide pore distribution. The specific capacitance of the optimized sample can reach 461.7 F g −1 in 6.0 mol L −1 KOH electrolyte at current density of 0.1 A g −1 , and still retains 337.5 F g −1 at current density of 10.0 A g −1 , indicting good rate capability. The assembled symmetric device exhibits the maximum energy density of 14.9 Wh kg −1 at the power density of 61.9 W kg −1 based on the active materials. The capacitance can retain 98.3 % of the initial capacitance after 10,000 cycles at current of 10.0 A g −1 . Using organic electrolyte, the operating voltage can be extended to 2.1 V, so the energy density of the device reaches 38.3 Wh kg −1 at 262.5 W kg −1 . This co-doped strategy provides an effective approach to prepared carbon-based materials with high capacitive performance.
研究领域:
材料科学
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能源存储
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
·
IF 9.4
Weining Li,Xiaping Lu,Bernard Wiafe Biney,Junfeng Li,Yingchun Yan,Kun Chen
Heteroatom-doped carbon has been widely investigated as anode materials for sodium-ion batteries (SIBs). However, simplifying the preparation process and precisely controlling their microstructure to achieve excellent Na + storage performance remain significant challenges. Therefore, in this study, high-performance N, P co-doped Na + storage carbon anode electrode materials were prepared by one-step carbonization using N, P-rich Eichhornia crassipes (EC) as raw materials and systematically tested for their Na + storage performance. The doping levels of N and P atoms as well as the spatial structure of the carbon material were adjusted by changing the carbonization temperature during the pyrolysis process. Among them, the anode material corresponding to 1300 °C (EC-PN1300) showed an excellent Na + storage capacity of 336 ± 4 mAh g −1 (50 mA g −1 ) and excellent cycling stability (99.8 % retention after 2000 cycles). In addition, the Na + storage mechanism of EC-PN1300 was systematically analyzed using galvanostatic intermittent titration (GITT), ex-situ XPS and in-situ Raman spectroscopy, providing accurate research directions for developing carbon anode electrode materials with superior electrochemical performance. This study not only provides some insights into the preparation of carbon anode materials in alkali metal batteries and the development of carbon materials in other fields, but also realizes the interaction between environmental protection and new energy development.
研究领域:
材料科学
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能源研究
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环境科学
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产品关联
DOI
PubMed
高影响因子
ChemSusChem
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2024
·
IF 7.5
Hong-Yi Tan,Bing-Hao Wang,Meng-Yi Xu,Zhi-Yong Peng,Wen-Juan Wu,Sheng Shen,Shuangfeng Yin
Metal-organic frameworks (MOFs) are promising catalysts for the electrochemical oxygen evolution reaction (OER) due to their high surface area, tunable pore structures, and abundant active sites. Ligand engineering is an important strategy to optimize their performance. Here, we report the synthesis of NiFe-MOFs based on three different ligands: 1,4-terephthalic acid (BDC), 2,4-thiophene dicarboxylic acid (TDC), and 2,5-furandicarboxylic acid (FDC), to investigate the effects of heteroatom-based aromatic rings on OER performance. It is revealed that by incorporating electronegative sulfur and oxygen atoms into the ligands, the electron density at the metal sites is reduced, leading to enhanced metal-oxygen covalency and improved charge transfer kinetics. The NiFe-FDC/NF catalyst demonstrates an overpotential of 189 mV at 10 mA·cm-2 and stable performance over 1300 hours at 1 A·cm-2. In situ infrared spectroscopy reveal minimal structural reconstruction in NiFe-FDC/NF, contributing to its superior stability. The NiFe-FDC/NF were then subjected to 3600 hours of OER operation and it’s metal elution was monitored. These findings offer a novel approach to ligand design for high-performance MOF-based OER catalysts, highlighting the potential of furan-based ligands for MOF ligand engineering.
研究领域:
材料科学
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电化学
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产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2020
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IF 7.182
Jiaming Sun,Yushan Liu,Zhenwei Wu,Mingcong Xu,Lei E,Chuihui Ma,Sha Luo,Ju Huang,Wei Li,Shouxin Liu
Heteroatom-doped carbon materials have received great attention for applications in electrode materials. However, conventional heteroatom-doping methods sacrifice conductivity, stability, and specific surface area (SSA). Here, the carbon quantum dots (CDs) are used as carriers of N, P, O to form electron-rich regions promoting electron transport without decreasing stability and SSA. The CDs promote the formation of graphitic nitrogen in the composite, which effectively reduces their internal resistance by increasing the dielectric constant. Moreover, the orderly growth of ice crystals generates a unique bridged layer structure under bidirectional freeze-casting in a mixture of GO/CDs/microfibrillated cellulose, which gives the composite super-compressibility. Notably, the optimal sample has a 117% increase in specific capacitance. The CDs also improve wettability and thus reduce the charge transfer resistance giving a large desalination capacity of 32.59 mg g −1 (504 mg L −1 NaCl). This work illustrates the unique role of CDs in improving the electrochemical performance of composites.
研究领域:
材料科学
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能源存储
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环境工程
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产品关联
DOI
PubMed
高影响因子
COMPOSITES PART B-ENGINEERING
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2021
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IF 9.078
Chengwei Ye,Lan Xu
In view of the respective advantages of electrical double layer capacitance (EDLC) and pseudocapacitance , the development of electrode materials with dual energy storage mechanisms (EDLC and pseudocapacitance) will play a significant role in maximizing the overall capacitance performance. In this paper, the core-shell fibers with dense zeolite imidazole framework (ZIF) coating were synthesized on the electrospun composite nanofiber substrate by a rapid in-situ growth strategy. After pyrolysis of ZIFs(shell)@PAN/PVP(core) fibers, heteroatom-doped porous carbon fiber materials with high specific surface area (410.55 m 2 g -1 ) were obtained. It not only had a layered porous structure , but also fully exposed the doped active sites, which made it have the advantages of EDLC and pseudocapacitance. As expected, the prepared porous carbon materials doped with rich heteroatom, as supercapacitor electrode materials, exhibited large specific capacitances of 492.7 F g −1 at a current density of 1 A g −1 and 406.4 F g −1 at 10 A g −1 . After 5000 cycles of galvanostatic charge-discharge at 10 A g −1 , its capacitance retention rate was as high as 98.65%, showing excellent charge storage performance and good cycle stability. Therefore, this work presents an effective strategy for the design and preparation of supercapacitor electrode materials with dual energy storage mechanisms.
研究领域:
材料科学
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能源存储
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产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
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2022
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IF 3.656
Hongyu Wang,Na Qiu,Xiangfei Kong,Zhenguang Hu,Fuxin Zhong,Haijun Tan
A new Porous Organic Polymer (POP), termed CTF-PTZ , was synthesized through polymerization of 10-methyl-10H-phenothiazine-3,7-dicarbonitrile in the presence of trifluoromethanesulfonic acid catalyst. Owing to the richness of heteroatoms such as N and S atoms in its molecular structure, the fluorescence response of CTF-PTZ to metal ions was studied, and it was found that CTF-PTZ had a specific fluorescence response to Hg 2+ . Thus, high selectivity in fluorescence responsiveness to Hg 2+ of CTF-PTZ was revealed and the detection limit of it was up to be 2.09 × 10 −7 moL·L −1 , which was found by fluorescence spectroscopy titration and fluorescence competition experiments. We successfully demonstrated that the fluorescence responsive POP material provides the promising potential for Hg 2+ detection.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
LUMINESCENCE
·
2025
·Vol. 40
·期 5
·e70177
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IF 3
Ruihao Huang,Song Ye,Meiyan Wang,Ling Pan,Tianning Zheng,Deping Wang
The manipulation of silver nanoclusters' luminescence performance in heteroatom zeolite was rarely reported. In this research, the heteroatom Ga-FAU zeolites were synthesized together with the Al FAU zeolite, based on which a series of Ag nanoclusters loaded Al FAUAg and mGa FAUAg zeolites were prepared. The spectroscopy characterization indicated that emission intensity of silver nanoclusters is greatly enhanced in Ga-containing zeolites compared to that in Al FAUAg, and meanwhile, the excitation and emission peak showed redshift and blueshift, respectively, with the introduction and increasing proportion of Ga atoms in mGa FAUAg. The TD-DFT method was carried out on the [Ag 3 Ga x D6r] + (x = 0, 1, 2, 3, 4, 5) clusters to study the effect of framework Ga on the luminescence properties of Ag 3 + in the D6r cavity of FAU zeolite, which suggested that the S 1 → S 0 transition of Ag 3 + is responsible for the radiative visible emission. Moreover, the low-energy shift for S 3 → S 0 transition and high-energy shift for S 1 → S 0 transition were observed with increasing x value in [Ag 3 Ga x D6r] + clusters, which is in accordance with the experimental observation. This research provided an alternative method for the manipulation of silver nanoclusters' luminescence performance by using heteroatom zeolite, which contributed to the design of solid phosphors with desirable emission.
研究领域:
材料科学
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光化学
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计算化学
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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）