Surfaces and Interfaces
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2024
·
IF 5.7
Jiao Wang,Zhiyuan Mi,Caihong Lu,Zhenhua Han,Yuxin Wu,Xiaolong Fu,Guofang Zhang
The practical utility of bismuth and tin compounds, as promising green combustion catalysts, is constrained by their substantial particle agglomeration. Herein, a straightforward ultrasonication-assisted method was reported to incorporate bismuth and tin compounds into the inner spaces of carbon nanotubes (CNTs), affording CNTs-confined bismuth (tin) compounds. The as-prepared nanocomposites were structurally completely characterized. The electrochemical property investigations showed that the introduction of bismuth and tin compounds increases the catalytic active sites of carbon nanotubes and inhibits nanoparticle agglomeration effectively. The theoretical calculations revealed that synergistic effects between Bi 2 O 3 and carbon nanotubes can improve the efficiency of electron transfer in the Bi(NO 3 ) 3 @A-CNTs(M1) composite. The evaluation results of the combustion catalytic performance of the nanocomposites on ammonium perchlorate (AP) pyrolysis suggested that adding 5 wt.% Bi(NO 3 ) 3 @A-CNTs(M1) and DBT@A-CNTs(M1) (DBT = Dibutyltin dichloride) in AP brought about a more concentrated thermal decomposition process, advancing the peak of AP in the high-temperature decomposition stage from 420.4 ℃ to 328.9 and 325.9 ℃, respectively, and boosting its heat release from 976.42 J·g −1 to 2251.2 J·g −1 and 2452.03 J·g −1 , respectively. The studies on the thermal degradation mechanism of AP, probed by thermal decomposition kinetics, in-situ solid FTIR and TG-FTIR-MS, concluded that the electron transfer from the critical steps ClO 4 − to NH 4 + and O 2 to O 2 − is accelerated by the interaction of the in-situ formed Bi 2 O 3 nanoparticles and carbon nanotubes, boosting the relative contents of more stable gases, and ultimately promoting AP pyrolysis. A tentative catalytic thermal degradation mechanism of AP is finally proposed.
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高影响因子
JOURNAL OF RAMAN SPECTROSCOPY
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2024
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IF 2.4
Huan Wang,Zhengang Wu,Yingna Wei,Ying Chen,Xiao jie An,Jingwu Li,Zhiwu Wang,Yankun Liu,Hengyong Wei
Gastric cancer (GC) is a highly lethal malignancy, seriously threatening people's physical health. Accurate screening of gastric cancer could improve the survival rate of patients. Therefore, exploring noninvasive and efficient cancer screening methods for gastric cancer is of great significance. In the past few years, exosomes have received much attention for their potential in disease diagnosis and treatment. Here, the aim of this study was to explore the detection of serum exosomes via surface-enhanced Raman spectroscopy (SERS) technique based on TiN-Ag@Ag sol composite substrate, and its potential application in gastric cancer diagnosis is evaluated. Exosomes were extracted from the serum of 31 GC patients and 31 healthy controls (HC) using an exosome kit. This study used various machine learning algorithms such as principal component analysis linear discriminant analysis (PCA-LDA), partial least squares discriminant analysis (PLS-DA), support vector machine (SVM), and k-nearest neighbor (KNN) algorithm to analyze SERS spectra, in order to distinguish between HC and GC. The results show that the k-nearest neighbor algorithm performs the best in HC and GC classification. These results indicate that the combination of SERS and machine learning methods provides a new technological approach for gastric cancer screening. This study offers a new proposal for the universal applicability of analysis and identification with SERS of serum exosomes samples in clinical diagnosis.
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高影响因子
ANALYTICA CHIMICA ACTA
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2024
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IF 5.7
Feng Guo,Pingxiu Zeng,Jinhua Liu,Hongmei Hu,Wenbin Zhu,Yuanchao Wang,Heyong Cheng
Background Tin and lead contamination is a global threat to marine ecosystems considering their species-specific toxicity, bioavailability and mobility. Hence simultaneous measurement of multiple tin and lead compounds at μg L −1 to pg L −1 levels in environmental water is always an indispensable but challengeable task. High performance liquid chromatography coupled with inductively coupled plasma mass spectrometry (HPLC-ICP-MS) is one of the most widely used choices for this purpose because of good sensitivity, strong separation power and good compatibility. Previous HPLC-ICP-MS methods based on a single elemental speciation strategy are low-efficiency and sensitivity-insufficient for a large set of unstable samples and interaction of multiple metal(loid)s down to ng L −1 levels. Results In this study, we developed a sensitive, efficient and environment-friendly analytical method for accurate quantification of inorganic and organic species of tin and lead simultaneously based on HPLC-ICP-MS with online integration of solid phase extraction (SPE). By using graphene oxide modified silica conditioned with 1 mM benzoic acid to enrich tin and lead species from 10 mL sample, detection limits were improved to 2–8 pg per liter due to satisfactory enrichment factors (522−2848 folds). The SPE-HPLC-ICP-MS method was applicable to quantification of ultra-trace tin and lead species at pg L −1 levels in uncontaminated seawater . Tributyltin was the only tin species detected at subnanograms per liter levels while Pb(II) was the only lead species detected at several nanograms per liter in thirteen coastal seawater samples collected in Hangzhou Bay, indicating light contamination of tin and lead. Significance Overall, the proposed SPE-HPLC-ICP-MS method is highly sensitive, efficient and environment-friendly that are fairly suitable to routine speciation analysis of tin and lead in environmental, food, and biological samples.
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DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Junying Yi,Xiaomin Wu,Bihong Lv,Huawang Zhao,Guohua Jing
Bismuth-based catalysts for the electrocatalytic reduction of CO 2 to formate are regarded as a highly promising strategy for the conversion of surplus CO 2 into valuable chemical commodities. Currently, lowering the free-energy barriers of the activation of CO 2 and *OCHO is highly desirable and challenging. In this study, a catalyst rich in boron (B)-doped and Sn-Bi bimetallic interface is constructed. The utilisation of X-ray photoelectron spectroscopy (XPS), Bader charge analysis and projected density of states (PDOS) analysis reveal that the Bi sites adjacent to boron exhibited a positive valence state. This valence characteristic significantly facilitates the adsorption of CO 2 on the surface, resulting in the generation of the *CO 2 – intermediate. Meanwhile, the bismetallic interface between Bi and Sn induces an electron-rich Bi sites, which subtly enhances the interaction between the active sites and the *OCHO intermediate, thereby reducing the free-energy barrier. The synergistic effect of B doping and the bimetallic interface strategically modulates the local electronic structure of Bi to reduce the two free-energy barriers, including the rate-determining step. Comprehensive electrochemical analysis, coupled with corresponding characterization tests and theoretical calculations, demonstrates that it significantly lowers the two free-energy barriers, achieving an impressive maximum Faraday efficiency of 98.4 % at −1.0 V vs. RHE.
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高影响因子
Energy Storage Materials
·
2021
·
IF 17.789
Linlin Ma,Li-Juan Yu,Jingchong Liu,Ya-Qiong Su,Shuai Li,Xiaohuan Zang,Tao Meng,Shuaihua Zhang,Jianjun Song,Jiangyan Wang,Xiaoxian Zhao,Zhimin Cui,Nü Wang,Yong Zhao
As the desired sulfur host of lithium-sulfur battery, the strong polarity and fast electron migration capability are indispensable for achieving effective adsorption and conversion of lithium polysulfides (LiPSs), that is, restricting the shuttle effect. Herein a porous microdisk Ti 4 O 7 /TiN/C heterojunction with strong polar N-Ti-O covalent bonds is precisely constructed. Compared with O-Ti-O or N-Ti-N bond in single Ti 4 O 7 or TiN , the N-Ti-O bond with stronger polarity could adsorb and bond with S and Li atoms in LiPSs, which is beneficial for LiPSs adsorption. Beside, the Ti 4 O 7 /TiN heterostructure favors the electron transfer , which could promote the conversion of LiPSs. The design strategy is to construct abundant polar N-Ti-O bonds at Ti 4 O 7 /TiN heterogeneous interface that would realize the associative process of LiPSs adsorption, trapping, and conversion, thereby restraining the shuttle effect efficiently. In the current study, as the host of the sulfur cathode, the porous microdisk TiN/Ti 4 O 7 /C heterojunction exhibits a high specific capacity of 1204.5 mAh g −1 at 0.2 C, and a high specific capacity of 616.5 mAh g −1 at an ultrahigh current density of 4 C. In addition, 86.4% and 116.9% capacity are retained over 1000 cycles at 1 C and 2 C, respectively. This strategy provides an insight into developing lithium-sulfur battery with extraordinary performance, and opens promising routes to design the next-generation electrochemical energy storage devices.
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高影响因子
MEASUREMENT
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2025
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IF 5.6
Lixia Li,Jiabin Zhao,Mingdeng Jin,Siyuan Wu,Feiyou Liu,Yurui Huang,Ning Feng,Yufang Liu
Mercury ion is a highly toxic heavy metal pollutant that poses significant risks to both environmental and human health, underscoring the need for the development of highly sensitive, rapid-response, and convenient detection methods. In this study, we present an optical fiber sensor based on indium tin oxide/gold/graphene oxide composite membrane structure and gold nanoparticles for sensitivity mercury ion detection. The sensor achieves enhanced sensitivity by coupling surface plasmon resonance excited in the indium tin oxide/gold/graphene oxide composite film with the localized surface plasmon resonance induced by gold nanoparticles. In order to achieve highly selective mercury ion detection, two special single-stranded DNAs thymine rich and asymmetrically matched that are modified on the sensing region and gold nanoparticles, respectively. In the presence of mercury ion, the single-stranded DNAs strands form a double-helix thymine-mercury ion-thymine complex, anchoring the gold nanoparticles to the fiber surface. This leads to a pronounced change in the refractive index near the sensing region, resulting in a red shift in the SPR spectrum. Furthermore, by reducing the single-stranded DNAs length, the distance between the gold nanoparticles and the fiber surface can be minimized, thereby enhancing the near-field coupling effect and increasing detection sensitivity. Experimental results demonstrate that reducing the single-stranded DNAs length from 15 nm to 3 nm enhances the sensitivity of mercury ion detection by to 173 % of the original and lowers the detection limit to 8.8 × 10 −10 M. This sensor combines high sensitivity, selectivity and low cost, with significant potential for applications in environmental monitoring.
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高影响因子
Sustainable Energy & Fuels
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2020
·Vol. 4
·期 10
·5327-5338
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IF 5.503
Meng Xia,Wenjie Dong,Zheng Shen,Shaoze Xiao,Wenbo Chen,Minyan Gu,Yalei Zhang
In the catalytic transformation of biomass into valuable chemicals, it is extremely important to inhibit undesirable reactions to increase the yield of target products. In this study, the introduction of indium and tin into Beta zeolites promoted the transformation of glucose into lactic acid with a high yield of 53%. Selective experiments and a developed kinetic model confirmed the sensitivity of the main reaction rate to the action of tin, including those of the isomerization and retro-aldol condensation reactions, and shielding of the side reactions by indium. An in-depth analysis of the catalyst acidity showed that weak Lewis acidity in the indium and tin species promoted the main reaction steps, whereas the decreased amount of strong Lewis acidity by introduction of indium into the Sn-Beta catalyst suppressed the side reactions. The coupling of multifunctional active sites provides a new strategy for addressing challenges in commercial lactic acid production.
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高影响因子
RARE METALS
·
2024
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IF 9.6
Liu Ke-Xin,Tan Ran,Zheng Zhong,Zhao Rui-Rui,Ülgüt Burak,Ai Xin-Ping,Qian Jiang-Feng
Lithium metal, with its exceptionally high theoretical capacity, emerges as the optimal anode choice for high-energy-density rechargeable batteries. Nevertheless, the practical application of lithium metal batteries (LMBs) is constrained by issues such as lithium dendrite growth and low Coulombic efficiency (CE). Herein, a roll-to-roll approach is adopted to prepare meter-scale, lithiophilic Sn-modified Cu mesh (Sn@Cu mesh) as the current collector for long-cycle lithium metal batteries. The two-dimensional (2D) nucleation mechanism on Sn@Cu mesh electrodes promotes a uniform Li flux, facilitating the deposition of Li metal in a large granular morphology. Simultaneously, experimental and computational analyses revealed that the distribution of the electric field in the Cu mesh skeleton induces Li inward growth, thereby generating a uniform, dense composite Li anode. Moreover, the Sn@Cu mesh-Li symmetrical cell demonstrates stable cycling for over 2000 h with an ultra-low 10 mV voltage polarization. In Li||Cu half-cells, the Sn@Cu mesh electrode demonstrates stable cycling for 100 cycles at a high areal capacity of 5 mAh·cm −2 , achieving a CE of 99.2%. This study introduces a simple and large-scale approach for the production of lithiophilic three-dimensional (3D) current collectors, providing more possibilities for the scalable application of Li metal batteries. Graphical abstract
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Pengfei Wan,Xincheng Guo,Shengdong Jing,Shilan Li,Shengjun Lu,Yufei Zhang,Haosen Fan
Lithium-sulfur (Li-S) batteries present tremendous potential in promising high energy storage systems because of their high energy density and specific capacity. However, the shuttle effect and slow reaction kinetics of the intermediate lithium polysulfide (LiPSs) result in fast capacity fading. Herein, multicomponent synergy nitrogen-doped carbon nanotube (CNT) framework dotted by CoFe/FeN 0.0324 /TiN heterostructure (CoFe/FeN 0.0324 /TiN@N-CNT) were developed and prepared by in-situ nitridation approach as polysulfide mediator to simultaneously realize physicochemical adsorption and catalytic conversion of polysulfide. Transition metal nitrides, such as FeN 0.0324 , are known for their polar surfaces that can chemically adsorb polysulfides efficiently. Additionally, CoFe and TiN have been shown to catalyze polysulfide redox reactions. This understanding paves the way for the development of heterostructured CoFe/FeN 0.0324 /TiN nanoparticles that significantly enhance the immobilization, diffusion, and transformation of polysulfides. Moreover, nitrogen-doped carbon nanotubes (CNTs) decorated with bimetallic CoFe afford intriguing benefits. The CoFe alloy not only facilitates the in-situ growth of CNTs but also contributes to prominent Li + /electron conductivity. Together, CoFe and CNTs provide substantial physical confinement and catalytic sites, thereby accelerating redox kinetics and effectively mitigating the shuttle effect. Owing to these advantages, CoFe/FeN 0.0324 /TiN@N-CNT separators exhibit remarkable electrochemical properties including superior rate capacity of 738 mAh g −1 at 3C, high reversible capacity of 708 mAh g −1 at 0.5C after 400 cycles and 607 mAh g −1 at 1C after 1000 cycles with per cycle declining rate of 0.09 % and 0.048 %, respectively, and ultralong cycle life at 4C after 1000 cycle. Even with a relatively high sulfur loading of 2.3 mg, the modified batteries still exhibit a satisfactory reversible capacity at 0.5C. This work paves a unique avenue combined prudent spacial framework with heterogeneous synergy strategy for manufacturing high-energy–density Li-S batteries.
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高影响因子
Journal of Cleaner Production
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2022
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IF 11.072
Yizhuang Wang,Bingbing Liu,Hu Sun,Yanfang Huang,Guihong Han
Zinc-leaching residue (ZLR) with 0.46% Sn and 54% Pb brings potential threats to environment but is worthy to recover valuable metals. Reduction of Sn(IV) to Sn(II) is critical for tin extraction. In this work, selective extraction and recovery of tin from ZLR via oxalic acid/sulfuric acid leaching and hydrolytic precipitation was proposed. Various reductants were attempted, and the oxalic acid shows superior tin leaching efficiency. The effects of reduction leaching and hydrolysis parameters on the separation of Sn and Pb were systematically investigated. After leaching by 24 g/L oxalic acid in 0.50 mol/L H 2 SO 4 at 60 °C for 30 min with L/S ratio of 10 mL/g and stirring speed of 400 r/min, 90.5% Sn is leached into the solution, and 99.8% Pb is simultaneously concentrated in the leaching residue. In the hydrolysis process , tin sediment with recovery of 93.8% and content of 46.4% was obtained. The as-prepared tin and lead products can directly act as concentrates for the tin and lead smelting . The oxalic acid reduction leaching mechanism of tin was also discussed. Based on the reduction leaching behaviors of tin from ZLR, the possible Sn leaching enhancement via oxalic acid addition in the existing industrial zinc-leaching process was proposed in this work.
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高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
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2018
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IF 5.018
Zijie Xu,Teng Li,Qian Liu,Fayin Zhang,Xiaodan Hong,Shuyao Xie,Changxu Lin,Xiangyang Liu,Wenxi Guo
Here we present a highly flexible and large-area CuS transparent conductive film (TCF) fabricated by colloidal crackle pattern as a counter electrode (CE) for flexible dye sensitized solar cell (DSSC). This rectangular CuS TCF can be fabricated on arbitrary flexible substrates at low temperature and exhibits superior mechanical robustness in bending cycling measurement. The transmittance and conductivity can be accurately controlled by controlling the sizes and shapes of the crackle patterns, ~ 90% transmittance can be achieved when the sheet resistances (R s ) are ~ 60 Ω sq −1 . Moreover, such CuS TCF has strong receivable ability of pH (1−13) and temperature changes (0–100 °C). In the application of DSSC as CE, the cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) analyses of the CuS networks exhibit a comparable electrocatalytic behavior with the platinum (Pt) networks on polyethylene terephthalate (PET), yielding a power conversion efficiency (PCE) of 4.54% for DSSC based on CuS networks as CE and retaining > 90% PCE after 500 bending cycles. Such CuS TCF with high transparency, flexibility, conductivity and electrochemical catalytic ability shows great potentials in other wearable, light-weight electrochemical cells .
研究领域:
材料科学
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光伏技术
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纳米技术
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柔性电子学
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电化学
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高影响因子
Journal of Energy Chemistry
·
2026
·
IF 15.6
Hui Song,Jinshu Wang,Xinxin Wang,Guangshun Ran,Chunxia Lin,Tianjiao Lou,Jinxu Song,Xing Cheng,Wenyuan Zhou,Hongyi Li
Efficient hydrogen evolution at high current densities requires simultaneous optimization of intrinsic reaction kinetics, multiphase mass transport, and electrode durability. Here, we constructed a binder-free Pt/TiN NTs@3D-TC4 electrode by integrating Pt nanoparticles and in situ-grown TiN nanotube arrays on a three-dimensional printed porous titanium-alloy scaffold. Its high performance arises from three mutually reinforcing effects. First, the work function mismatch between Pt and TiN drives electron transfer from TiN to Pt, producing electron-rich Pt sites and an interfacial built-in electric field. Combined with Pt–N coordination and d - p orbital hybridization, this electronic metal-support interaction optimizes hydrogen adsorption and desorption energetics, thereby enhancing intrinsic hydrogen evolution reaction activity. Second, the periodic macroporous scaffold and nanoparticle-assembled TiN nanotubes create a superhydrophilic and aerophobic multiscale transport network. This network promotes electrolyte infiltration, proton delivery, and rapid bubble detachment while mitigating gas shielding at high current densities. Third, robust Pt–N anchoring and binder-free integration of the catalytic layer with the conductive framework suppress Pt migration, aggregation, and detachment. Consequently, Pt/TiN NTs@3D-TC4 requires overpotentials of only 30.8 and 207 mV to deliver 10 and 1000 mA cm −2 , respectively. It also achieves a Pt mass activity of 20.81 A mg Pt −1 at 200 mV and operates stably for over 200 h at 1 A cm −2 . These results establish a practical electrode design that combines hierarchical transport regulation with interfacial electronic modulation for scalable hydrogen production at high current densities. Interfacial electron transfer optimizes H* adsorption/desorption; multiscale hydrophilic architecture accelerates bubble release and mass transport; Pt–TiN interaction ensures structural stability. The triple enhancement enables scalable, high-current-density water electrolysis. Download: Download high-res image (145KB) Download: Download full-size image
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