SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2026
·
IF 4.8
Chen Zheng,Shuang Li,Wenhui Fang,Wei Zhang,Zhiwei Men
The competition between the intramolecular hydrogen bonds (intra-HBs) in astaxanthin (AST) and the intermolecular hydrogen bonds (inter-HBs) between AST and ethanol (EtOH) controls the structural stability of AST in the solution during the cooling process. This study employs an integrated approach combining Moving window Two-Dimensional (MW2D) correlation Raman spectroscopy and density functional theory (DFT) simulations to investigate the interaction between ethanol (EtOH) and astaxanthin (AST) across a temperature range of 303 K–83 K. The MW2D analysis indicates that, below 253 K, EtOH reorganizes into cooperative multimers prior to any conformational change in AST. DFT simulations demonstrate that EtOH multimers weaken the intramolecular hydrogen bonds (intra-HBs) in AST through O H⋯O C interactions. These findings clarify the apparent contradiction between the extended conjugation length of AST and weakened inter-HBs.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Ruiming Fang,Jiahe Sun,Mingnv Guo,Yanglin Chen,Zukhra C. Kadirova,Zhongqing Yang,Ziqiang He,Huaqiang Chu
The photothermal catalytic reduction of CO 2 to synthesize high-value hydrocarbon fuels has attracted significant attention. However, current conversion efficiency remains constrained by the dual limitations of insufficient photogenerated carrier concentration and the difficulty in effectively adsorbing and activating CO 2 . This work first successfully synthesized g-C 3 N 4 nanohollow spheres using a hard template method and ultrathin Bi 2 MoO 6 nanosheets via a solvothermal method, and then fabricated an S-scheme heterojunction by electrostatic assembly. Crucially, during the photothermal catalytic reaction, the dynamic formation of photogenerated oxygen vacancies and their induced dipole-limited domain field (DLDF) structure were identified as the key mechanism driving the exceptionally high activity in CO 2 photoreduction. In situ electron paramagnetic resonance spectroscopy directly demonstrated the dynamic cycling of the photogenerated oxygen vacancies during the catalytic reaction. Density functional theory calculations and carrier dynamics characterization analysis confirmed the synergistic effect of the DLDF in optimizing carrier kinetics and enhancing CO 2 adsorption. Ultimately, a high CO production rate of 48.69 μmol·g −1 ·h −1 was achieved. This work integrates heterojunction construction and morphology control strategies to achieve synergistic enhancement of photothermal catalytic performance and elucidates the intrinsic mechanism for the activity improvement. It provides an effective way for developing efficient heterojunctions for photothermal catalytic CO 2 reduction.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Yang Chen,Ning Ma,Xiaolian Liu,Zihao Liu,Shengyu Ling,Can Li,Yinyan Gong,Lengyuan Niu
The development of semiconductor-based surface-enhanced Raman scattering (SERS) substrates is often hindered by their limited sensitivity. Crystal facet engineering has been recognized as an effective strategy to improve the SERS performance of semiconductors. However, the underlying mechanism by which different exposed facets influence SERS activity in bimetallic oxide systems remains unexplored. In this study, we successfully synthesized NiCo 2 O 4 and ZnCo 2 O 4 bimetallic oxides with distinct exposed facets by regulating the alkali source. When evaluated using 4-Nitrothiophenol (4-NBT) as a probe molecule, the {110} facet demonstrated the highest SERS activity in both oxide systems. The enhancement factors (EF) reached 5.56 × 10 4 for NiCo 2 O 4 and 7.41 × 10 4 for ZnCo 2 O 4 . The limit of detection (LOD) was as low as 10 −7 M and 10 −8 M, respectively, as well as the excellent repeatability and stability. Energy level structure reveals that the superior SERS properties on the {110} facet can attributed to their higher VB maxima, which enhances the thermodynamic driving force and kinetic efficiency of the interfacial charge transfer (CT) process. Moreover, first-principles calculations further illustrate that the CT efficiency on the {110} facet can be effectively improved. This work provides a clear new direction for designing high-performance semiconductor SERS substrates through precise facet control.
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2026
·Vol. 16
·期 11
·10243-10254
·
IF 6.1
Wenhao Liu,Yanfeng Zhu,Zhihao Liu,Jianxia Gou
Marine corrosion poses a critical threat to the safety of offshore oil and gas facilities. To address the intrinsic drawbacks of pristine TiO2, ZnS/CdS/Ti3+-TiO2 nanotube composites were rationally fabricated via a synergistic strategy combining electrochemical anodization and successive ionic layer adsorption and reaction (SILAR) techniques. Structural and optical characterization confirmed that the as-synthesized composites feature a well-constructed cascade band alignment, which efficiently mitigates the recombination of photogenerated electron–hole pairs. Accordingly, the optimized photoanode delivered a high photocurrent density of 279 µA cm−2. When coupled with 316 stainless steel (316 SS), the composite exhibited a pronounced photo-induced potential of −0.89 V (vs. SCE), achieving a remarkable performance enhancement over pristine TiO2. This enhanced photocathodic protection originates from the synergistic interplay between Ti3+ self-doping and the ZnS/CdS heterojunction: Ti3+ self-doping introduces abundant electron donors to enhance the electrical conductivity of the composite, whereas the ZnS/CdS heterojunction broadens the visible-light absorption range and accelerates the separation and directional migration of photogenerated charge carriers.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2026
·
IF 19.7
Xingyi Tian,Lan Tang,Hanlin Zeng,Yulu Li,Jingdong Peng,Ming Li,Rongxing He
The electrochemical oxidation of 5-hydroxymethylfurfural (HMFOR) offers a promising route for biomass upgrading. However, its kinetics are severely hindered by the competitive adsorption between key reactive species on catalyst surfaces. Herein, we report a CoO/Ni 3 N-2:3 heterojunction catalyst that enables efficient and selective conversion of HMF to 2,5-furandicarboxylic acid (FDCA). A “bipolar synergistic adsorption effect” is identified at the CoO/Ni 3 N-2:3 interface. This effect is driven by a built-in electric field (BIEF) generated through interface polarization and the work function difference (ΔΦ) between Ni 3 N and CoO. In situ spectroscopic studies and theoretical calculations reveal that the BIEF acts as an electron sorter, directing OH − and HMF to respectively adsorb at oppositely charged regions while strengthening their adsorption. This spatially oriented adsorption effectively lowers the reaction energy barrier and suppresses competitive adsorption of key reactive species, thereby enhancing both activity and selectivity. As a result, the CoO/Ni 3 N-2:3 catalyst initiates HMFOR at a low potential of 1.18 V RHE and achieves complete HMF conversion at 1.408 V RHE with 99.2% FDCA yield and 97.2% Faradaic efficiency. This work provides an innovative strategy for designing high-performance electrocatalysts for biomass valorization.
✓ 已验证
产品关联
DOI
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2026
·
IF 4.5
Liyan Wang,Limin Ding
This work aimed to prepare organo-montmorillonite (PB-MMT and PD-MMT, namely O-MMT) adsorbent with hydrophobic properties and hydrogen bond acceptor capacity via modification with Gemini surfactants (PB and PD), and to investigate the key role of long alkyl chains and amide bonds in the adsorption behaviors of 4-nitrophenol (4-NP) and 4-chlorophenol (4-CP) in aqueous solutions. The microstructure, morphology and surface propertie of O-MMT were explored by different techniques, including XRD, BET, SEM, FT-IR, TGA and Zeta potential. The results show that the saturated adding amount of PB and PD is 1.0 CEC, and PD with flexible alkyl spacer shows markedly higher loading amount (38.22 wt%) on Na-MTT than PB with rigid spacer (36.35 wt%). The batch experiment results of O-MMT to 4-NP and 4-CP demonstrate that the two are ranked by adsorption capacity as follow: PD-MMT > PB-MMT. Kinetic studies are found pseudo-second-order (R 2 > 0.99) and equilibrium data are fitted well by Freundlich isotherm model (R 2 > 0.99) which indicate the adsorption process is primarily multilayer adsorption. The calculated thermodynamic parameters exhibit that the adsorption processes of 4-NP and 4-CP on O-MMT are physical adsorption and exothermic. Adsorption mechanisms highlighted the synergistic effects of hydrophobic interactions and O-H···N hydrogen bonding as important design criteria for efficient removal of 4-NP and 4-CP from aqueous solutions.
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2026
·
IF 2.6
Yijing Li,Xiaogang Luo,Piaowen Yang,Jian Xiao,Zhaoyan Chi
The effective removal of trace trimethoprim (TMP) from aquatic environments remains a significant challenge due to the limited efficiency of conventional adsorbents at low concentrations. In this study, a novel composite adsorbent, MMT/CMCBS, was successfully fabricated by incorporating montmorillonite (MMT) into a carboxymethylated cellulose (CMC) matrix through an optimized extrusion-dropping method. The structural and chemical properties of the beads were systematically characterized using FESEM-EDS, FT-IR, XRD and XPS revealing a stable macroporous structure (≈1.5 mm diameter) with well-dispersed MMT. Fixed-bed column experiments demonstrated that MMT/CMCBS exhibits exceptional performance for TMP removal, achieving a removal efficiency of 99.874% and maintaining over 90% performance after four regeneration cycles. The breakthrough curves were well-described by the Adams-Bohart models (R2 > 0.94), indicating favorable dynamic adsorption behavior. Mechanism analysis further revealed that the synergistic removal of TMP was driven by hydrogen bonding and chemisorption between the TMP molecules and the functional groups of the composite. This study provides a highly efficient, stable, and environmentally friendly strategy for the elimination of TMP from water, offering significant potential for continuous-flow water treatment.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2026
·
IF 9.2
Chang Zhang,Yiying Jia,Xuanzhou Chen,Yanghe Liu,Louis D. Zhang,Yanhui Zhang
Solar interfacial steam generation can deliver freshwater with minimal energy input, but most evaporators remain single-function devices that concentrate organics in the residual brine and rely on costly substrates. We report a waste-to-device platform, reduced TiO 2 @corncob biochar (r-TiO 2 @CCB), that integrates interfacial evaporation and photocatalysis in a single recoverable monolith. Corncob biowaste is carbonized to a mechanically robust, low-conductivity scaffold with aligned macro-mesopores; oxygen-vacancy-rich TiO 2 nanodomains are then anchored throughout the pore walls, forming intimate semiconductor-carbon contacts. Textural and spectroscopic analyses confirm the design logic: a hierarchical pore network that sustains capillary water supply, preserved anatase crystallinity, and ∼15% Ti 3+ associated with oxygen vacancies that extend spectral response and facilitate interfacial charge transfer. Under one-sun irradiation (1 kW m −2 ), the optimized monolith carbonized at 700 °C achieves an evaporation rate of 2.18 kg m −2 h −1 in pure water and 2.40 kg m −2 h −1 in 5 ppm Rhodamine B (RhB), with solar-to-vapor efficiency up to ∼90 %. Concurrently, it removes over 90% of RhB within 3 h, and retains >75 % removal after five reuse cycles. The synergy arises from heat localization and solute concentration in thin interfacial films that accelerate catalysis, while pollutant mineralization diminishes optical screening and interfacial resistance to enhance evaporation. By converting abundant biowaste into a dual-functional, powder-free device, this work provides general design rules for scalable, solar-driven purification that couples energy-lean evaporation with on-site contaminant destruction.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2026
·
IF 10.4
Qian You,Wenhong Gao,Zhong Han,Xin-an Zeng,Linlin Ye,Yuwen Huang,Yunqi Zhang,Ji Ma
Rapid and accurate quantification of total volatile basic nitrogen (TVB-N) is required to evaluate the freshness of meat products. In this study, a multichannel fluorescence sensing system was constructed by means of two pH-responsive fluorescent dyes and four amine-specific recognition metal nanoclusters as recognition elements. Besides, a continuous fluorescence spectrum was reconstructed by the six-channel fluorescence spectra based on the characteristic response of TVB-N molecules. And a chemometric model was used to establish the quantitative relationship between the reconstructed spectra and TVB-N values. The results indicated that the LS-SVM model exhibited the best performance ( R 2 = 0.951, RMSE = 1.04 mg/100 g). Moreover, this approach enabled accurate detection of TVB-N through simple sample pretreatment in complex food matrices and was successfully applied to the freshness monitoring of beef, chicken, sea bass, and shrimp. This is of great benefit to the rapid and accurate detection of freshness of meat products in cold-chain.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2026
·
IF 4.8
Ye He,Wu Wang,Xu-Dong You,Yao Chen,Xiao-Zhi Wang,Tong Wang,Hai-Long Wu,Ru-Qin Yu
Accurate discrimination of dark tea vintages is crucial for quality assurance and market value assessment. In this study, a multiple carbon quantum dots-enhanced excitation-emission matrix (MCQDs-EEM) fluorescence strategy was developed for the rapid identification of Anhua dark tea from different production years. Three functional carbon quantum dots with complementary responses to pH, tea polyphenols, and amino acids were combined into an integrated fluorescent chemical sensor, generating enhanced and information-rich fluorescence fingerprints upon interaction with tea infusions. The MCQDs-EEM dataset was decomposed using the Alternating Trilinear Decomposition (ATLD) algorithm, which revealed four chemically significant components that showed differences in Anhua dark tea from thirteen different years. Based on the MCQDs-EEM data, partial least squares discriminant analysis (PLS-DA) and k -nearest neighbors ( k- NN) models were constructed. The PLS-DA model achieved 100% classification accuracy for both the training and test sets, while the k -NN model attained accuracies of 96.59% and 100%, respectively. These results demonstrate clear superiority over the traditional fluorescence strategy based on carbon quantum dots (CQDs-FL), which relies on the splicing of three distinct emission spectra. The MCQDs-EEM strategy not only simplifies the implementation process but also demonstrates higher accuracy, which can be regarded as an effective tool for tea vintage authentication and quality control.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD RESEARCH INTERNATIONAL
·
2026
·
IF 8.8
Jian Li,Yue-Wei Huang,Yi-Tong Li,Shi-Yin Luo,Wei-Yan Xiong,Jin-Hua Wang,Jun-Hu Cheng,Ting-Shi He,Xin-An Zeng
The impact of pulsed electric field (PEF) on the formation of acrylamide (AA) in air-fired French fries was investigated in this study. The results indicated that electric field intensity, pulse width, and cooking parameters significantly influence the formation of acrylamide in air-fried French fries. Compared with the traditional blanching treatment, PEF treatment more effectively inhibits AA formation and improves the cooking quality of French fries. Under optimal conditions, the AA content in the PEF-treated samples was reduced by 15.60% and 26.71% compared with that in the blanched and untreated groups, respectively. The significant suppression of AA formation may be closely associated with the ability of PEF to modify the microstructure of potato tissues and promote the leaching of AA precursors. PEF treatment did not induce significant gelatinization of potato starch. Instead, it caused electroporation of potato cells through polarization effects. This structural change enhanced heat and mass transfer efficiency during cooking, reduced processing time, and facilitated the continuous removal of key AA precursors, such as reducing sugars and asparagine. These structural and process modifications collectively suppress the Maillard reaction, thereby reducing AA generation. Furthermore, as a pretreatment method, PEF exhibits superior processing efficiency and lower energy consumption compared to blanching. In conclusion, PEF treatment can significantly decrease AA levels in air-fried French fries, showing great potential for producing healthier air-fried foods.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Yizhou Xu,Zhichao Zhang,Ziqing Gong,Shengfei Hu
This article reports the preparation of a multi-layer core-shell flame retardant (APP@SiO 2 @MA) using melamine (MA), ethyl silicate (TEOS), and γ-(2,3-epoxypropoxy) propyltrimethoxysilane (KH-560) as raw materials, coated with ammonium polyphosphate (APP). Apply the flame retardant to PPO/PS composite materials to improve their flame retardant properties and investigate its effect on the foaming performance of PPO/PS composite materials. This article confirms the successful microencapsulation of APP by SiO 2 and MA through energy dispersive spectroscopy (EDS) analysis, X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM) observation. The combustion performance of P samples and their foam samples was evaluated through thermogravimetric analysis (TG), limit oxygen index (LOI), and UL-94 vertical combustion test, the residual carbon quality significantly increased from 17% of PPO/PS to 38%, and the maximum oxygen index increased from 22.9% to 30.5%. At 165°C and 3.5 MPa foaming conditions, the foaming ratio increased from 1.18 to 4.56 times, and the maximum oxygen index after foaming was 27.9%. This study provides a green and convenient method for the preparation of flame-retardant PPO/PS bead foam materials, expanding the practical application of PPO/PS in industry.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）