Journal of CO2 Utilization
·
2018
·
IF 5.503
Yu Cao,Ran Ma,Ning Wang,Mei-Yan Wang,Xue-Dong Li,Liang-Nian He
Selective hydrogenolysis is a crucial challenge for lignin valorization. A PdCl 2 -catalyzed hydrogenolysis of C OH bond of various lignin β-O-4 alcohol model compounds was developed for preparation of corresponding phenethoxybenzene in 78–98% isolated yield. Notably, the introduction of low-pressure CO 2 (1 MPa) remarkably improves the reaction efficiency and selectivity of phenethoxybenzene. Neither over-reduction of aromatic ring nor further debenzylation was detected. This is understandable that the in situ methylcarbonic acid generated from CO 2 and methanol acts as an acidic catalyst and enhances the leaving ability of hydroxyl group of β-O-4 alcohols. Besides, the present PdCl 2 /CO 2 /MeOH catalyst system proved to be effective for reductive cleavage of C O bonds of β-O-4 ketones, producing ethylbenzenes accompanied with phenols in high yields. Furthermore, this protocol could also be extended to selective hydrodeoxygenation of the carbonyl group to methylene in aromatic ketones. As a sound reaction medium, such in situ CO 2 /MeOH acidic system could be inherently neutralized by depressurizing CO 2 , providing feature advantages for simple post-processing and none waste disposal.
✓ 已验证
产品关联
DOI
高影响因子
FOOD RESEARCH INTERNATIONAL
·
2024
·
IF 7
Shiya Gan,Yingqi Chen,Lei Zhao,Xiaoyi Zhao,Tong Qiu,Xiaoting Zhai,Qianying Dai
Chinese Xiaokeng green tea (XKGT) possesses elegant and fascinating aroma characteristics, but its key odorants are still unknown. In this study, 124 volatile compounds in the XKGT infusion were identified by headspace-solid phase microextraction (HS-SPME), stir bar sorptive extraction (SBSE), and solvent extraction-solid phase extraction (SE-SPE) combined with gas chromatography-mass spectrometry (GC–MS). Comparing these three pretreatments, we found HS-SPME was more efficient for headspace compounds while SE-SPE was more efficient for volatiles with higher boiling points. Furthermore, SBSE showed more sensitive to capture ketones then was effective to the application of pretreatment of aroma analysis in green tea. The aroma intensities (AIs) were further identified by gas chromatography–olfactometry (GC-O). According to the AI and relative odor activity value (rOAV), 27 compounds were identified as aroma-active compounds. Quantitative descriptive analysis (QDA) showed that the characteristic aroma attributes of XKGT were chestnut-like, corn-like, fresh, and so on. The results of network analysis showed that ( E , Z )-2,6-nonadienal, nonanal, octanal and nerolidol were responsible for the fresh aroma. Similarly, dimethyl sulfide, ( E , E )-2,4-heptadienal, ( E )-2-octenal and β -cyclocitral contributed to the corn-like aroma. Furthermore, indole was responsible for the chestnut-like and soybean-like aroma. This study contributes to a better understanding of the molecular mechanism of the aroma characteristics of XKGT.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Chen-Xuan Li,Rui Wang,Wen Sun,Kangping Cui,Xian-Zhong Fu,Minshu Cui,Yihan Chen,Zhi Guo,Yingying Liu
Advanced oxidation systems (AOS) hold promise for tackling refractory dyes in wastewater, yet the quest for efficient systems tailored to the degradation of dye remains a formidable hurdle. Here, a novel visible-light-driven AOS, consisting of biomimetic Fe(III) salen complex (FeL, salen= N, N-bis(salicylidene)ethylenediamine) and peroxymonosulfate (PMS), was proposed for highly efficient degradation of Rhodamine B (RhB), a model dye. The proposed AOS was capable of degrading 94.8 % RhB in 40 min, outperforming the typical Fe 3+ -based system, which achieved only 52.6 % pollutant degradation under identical conditions. As indicated by experimental results and theoretical calculations, the unique Fe-N 2 O 2 coordination structure of FeL facilitated the adsorption of terminal O (O3) at PMS site, thereby enhancing the heterolysis of the O-O bond and generating high-valent iron-oxo species (i.e., Fe Ⅴ =O) rather than radicals (SO 4 •− , HO • ). The system demonstrated robust resistance to interference from environmental anions (Cl − , NO 3 − , HCO 3 − , SO 4 2− ), pH variations (initial pH 3.0–11.0) and humic acid . More attractively, it achieved 87.3 % chroma and 37.6 % chemical oxygen demand (COD) removal in real dye wastewater samples. This work may shed light on the understanding and development of biomimetic Fe complexes-based AOS for wastewater treatment .
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2024
·
IF 3.7
Mian Gong,Yihui Dong,Minghai Zhu,Fengxiang Qin,Tianchi Wang,Faiz Ullah Shah,Rong An
Surface-enhanced Raman scattering (SERS) is a remarkably powerful analytical technique enabling trace-level detection of biological molecules. The interaction of a probe molecule with the SERS substrate shows important distinctions in the SERS spectra, providing inherent fingerprint information on the probe molecule. Herein, nonhalogenated phosphonium-based ionic liquids (ILs) containing cations with varying chain lengths were used as trace additives to amplify the interaction between the cytochrome c (Cyt c) and Zr–Al–Co–O (ZACO) nanotube arrays, strengthening the SERS signals. An increased enhancement factor (EF) by 2.5–41.2 times compared with the system without ILs was achieved. The improvement of the SERS sensitivity with the introduction of these ILs is strongly dependent on the cation chain length, in which the increasing magnitude of EF is more pronounced in the system with a longer alkyl chain length on the cation. Comparing the interaction forces measured by Cyt c-grafted atomic force microscopy (AFM) probes on ZACO substrates with those predicted by the extended Derjaguin–Landau–Verwey–Overbeek (XDLVO) theory, the van der Waals forces became increasingly dominant as the chain length of the cations increased, associated with stronger Cyt c–ZACO XDLVO interaction forces. The major contributing component, van der Waals force, stems from the longer cation chains of the IL, which act as a bridge to connect Cyt c and the ZACO substrate, promoting the anchoring of the Cyt c molecules onto the substrate, thereby benefiting SERS enhancement.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FUEL
·
2025
·
IF 7.5
Yake Wu,Suning Li,Jiawen Zhang,Shuai Li,Tao Zhong,Yanlong Zhu,Hong Li,Liuting Zhang
By constructing Ni-O-Zr interfaces, oxygen vacancies were generated and the interaction between the metal and the support in the catalyst was significantly enhanced. This synergy between Ni 0 and oxygen vacancies greatly boosted the catalytic activity of Ni 50 /ZrO 2 in the hydrogen storage system. Experimental tests showed that the MgH 2 + 10 wt%Ni 50 /ZrO 2 composite had a reduced initial hydrogen desorption temperature of 194.5 °C and released 6.30 wt%H 2 within 10 min at 265 °C. Notably, this composite exhibited excellent low-temperature hydrogen absorption kinetics, initiating absorption at 29 °C and nearly completing it (6.67 wt%H 2 ) at 134 °C. Furthermore, the activation energy for the modified MgH 2 had been substantially decreased from 76.66 kJ/mol to 32.01 kJ/mol (absorption) and 155.84 kJ/mol to 83.93 kJ/mol (desorption), respectively. The presence of oxygen vacancies at the Ni-O-Zr interface significantly amplified the catalyst’s charge conduction capabilities and provided a promising avenue for the development of effective catalysis for robust hydrogen storage.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Jialin Li,Yu Wang,Ye Zhang,Wei Zhao,Wenzhe Bao,Yufeifan Duan,Junwei Yu,Bo Zhu,Kun Qiao
Currently, the hydrogen storage application of carbon-based adsorbent materials is mostly implemented under the pressure conditions of 30–300 bar, while there is few targeted studies conducted on the unsaturated adsorption under ambient pressure conditions. Therefore, based on industrialized Lyocell biopolymer fiber precursors and the enhancement effects of dipole-induced hydrogen bonds (DIHB), this work presents a facile construction strategy for P/O co-doped Lyocell-based porous carbon fiber cloth (Ly-ACF-F40). By the technical route of thermal stabilization---sonication assisted phosphoric acid activation---hydrogen bonds introduced by interfacial fluorination, the constructed Ly-ACF-F40 acquires a high specific surface area (1870 m 2 /g) and total pore volume (1.277 cm 3 /g), and an excellent hydrogen storage capacity of 3.22 wt% under ambient pressure conditions (77 K, 1 bar). The study directly demonstrated in the experiment that dipole induced hydrogen bonding H(I)-H(II)···F can effectively enhance the atmospheric hydrogen storage density on the basis of other eliminating influencing factors of specific surface area. The simple construction strategy of porous carbon-based materials can provide reference for the research of unsaturated adsorption hydrogen storage materials under ambient pressure conditions, also assist in the application and promotion of low-cost solid hydrogen storage materials.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
·
2025
·
IF 3.1
Xiaolin Wu,Qiao Yu,Yuzhao Hou,Xuemei Zhang,Simon Sani Ocholi,Liming Wang,Ziping Yan,Jie Li,Lifeng Han
Cholestatic liver disease(CLD) is caused by impaired bile flow due to obstruction of the biliary tract, and long-term exposure to bile acids in the liver triggers inflammation, eventually leading to liver toxicity and liver fibrosis. Emodin-8- O-β -D-glucopyranoside(EG) is anthraquinone compound that is widely found in traditional Chinese medicine. It possessed antioxidative and anti-inflammatory activities. However, the effect of EG on cholestatic liver injury(CLI) has not been explored. In this study, Alpha-naphthyl isothiocyanate(ANIT)-induced CLI mice were used to investigate the anti-cholestasis and hepatoprotective effects of EG through serum biochemical index detection, non-targeted metabolomics, lipidomics, and intestinal flora 16S rRNA sequencing. The results suggested that EG restores homeostasis of the gut microbiome while regulating bile acids metabolism and lipid-related metabolic pathways to reduce liver damage in ANIT-induced cholestasis. This study provides a new perspective on the mechanism of EG, and help offer a more natural approach to managing liver damage.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2024
·Vol. 48
·期 8
·3594-3602
·
IF 2.7
Aihaimaitijiang Ababaikeri,Xueting Pan,Gulimeikereyi Tuniyazi,Xiangzhan Jiang,Yanhui Zhang,Dilnur Malik
A new non-centrosymmetric silicate Ba5Y12Zn[O(SiO4)]8 (BYZSO), the first compound of the Ba–Y–Zn–Si–O system, was synthesized by a high-temperature solution method in an open system, and its structure was identified using single-crystal X-ray diffraction data. Structural analysis indicates that it crystallizes in the noncentrosymmetric space group I2m (no. 121) with lattice parameters a = 18.7014(6) Å and c = 5.3640(2) Å corresponding to a tetragonal crystal system and is composed of isolated [ZnSi4O16] and [SiO4] units. Meanwhile, the effect of the cation-to-silicon ratio on the Si–O framework was also studied by investigating the structures of barium-, yttrium-, and zinc-containing silicates found in the Inorganic Crystal Structure Database (ICSD). Experimental characterization demonstrates that it possesses a short ultraviolet cut-off edge of 204 nm (6.18 eV), a moderate second harmonic generation (SHG) response (0.3× KDP) at the maximum particle size, and excellent thermal stability. Besides, first-principles theoretical calculations were carried out to elucidate the relationship between the electronic structure and optical properties. In summary, this work is instructive for the synthesis and design of silicates with different dimensions in the Ba–Y–Zn–Si–O system.
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 7
·1-13
·
IF 5.3
Li Ziqiang,Liang Shuang,Zhang Changsheng,Zhou Li,Luo Fengjian,Lou Zhengyun,Chen Zongmao,Zhang Xinzhong,Yang Mei
A ratiometric fluorescence sensing strategy has been developed for the determination of Cu 2+ and glyphosate with high sensitivity and specificity based on OPD (o-phenylenediamine) and glutathione-stabilized gold nanoclusters (GSH-AuNCs). Water-soluble 1.75-nm size GSH-AuNCs with strong red fluorescence and maximum emission wavelength at 682 nm were synthesized using GSH as the template. OPD was oxidized by Cu 2+ , which produced the bright yellow fluorescence oxidation product 2,3-diaminophenazine (DAP) with a maximum fluorescence emission peak at 570 nm. When glyphosate existed in the system, the chelation between glyphosate and Cu 2+ hindered the formation of DAP and reduced the fluorescence intensity of the system at the wavelength of 570 nm. Meanwhile, the fluorescence intensity at the wavelength of 682 nm remained basically stable. It exhibited a good linear relationship towards Cu 2+ and glyphosate in water in the range 1.0–10 µM and 0.050–3.0 µg/mL with a detection limit of 0.547 µM and 0.0028 µg/mL, respectively. The method was also used for the semi-quantitative determination of Cu 2+ and glyphosate in water by fluorescence color changes visually detected by the naked eyes in the range 1.0–10 µM and 0.30–3.0 µg/mL, respectively. The sensing strategy showed higher sensitivity, more obvious color changes, and better disturbance performance, satisfying with the detection demands of Cu 2+ and glyphosate in environmental water samples. The study provides a reliable detection strategy in the environment safety fields. Graphical abstract
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Qiang-Qiang Yang,Zhi-Han Ma,Qiang Zhang,Zi-Han Song,Hong-Xiang Nie,Jing-Jing Pang,Zhao-Quan Yao,Hongliang Huang,Min Feng,Tong-Liang Hu,Jian Xu
One-step adsorptive separation of high-purity ethylene (C 2 H 4 ) from the mixtures with ethane (C 2 H 6 ) or propylene (C 3 H 6 ) is of crucial importance in the petrochemical industry. Nevertheless, the development of porous materials that possess both high adsorption capacities and selectivities of C 2 H 6 and C 3 H 6 over C 2 H 4 is still a formidable challenge. Herein, we present a microporous pillar-layered metal–organic framework (MOF) that exhibits excellent uptake capacities of C 2 H 6 (4.73 mmol g −1 ) and C 3 H 6 (8.05 mmol g −1 ) at 298 K and 1 bar, leading to high adsorption selectivities for equimolar mixtures of C 2 H 6 /C 2 H 4 (1.6) and C 3 H 6 /C 2 H 4 (16.4), respectively. Breakthrough column experiments demonstrate that the MOF could achieve one-step acquisition of polymer-grade C 2 H 4 (> 99.9 %) during C 2 H 6 /C 2 H 4 and C 3 H 6 /C 2 H 4 separations. Noteworthily, for a C 3 H 6 /C 2 H 4 mixture (2/5, v / v ), high-purity C 2 H 4 (> 99.9 %) and C 3 H 6 (> 99.5 %) can be directly harvested or recovered upon desorption, with high productivities of 86.23 and 31.05 L kg −1 , respectively, surpassing many well-developed adsorbents for C 3 H 6 /C 2 H 4 separation. Theoretical calculations reveal that the nonpolar pore surface bearing accessible N and O atoms affords more hydrogen bonding interactions with C 2 H 6 and C 3 H 6 than C 2 H 4 , accounting for the adsorption affinity in the order of C 3 H 6 > C 2 H 6 > C 2 H 4 . This work may offer valuable insights into the design and construction of high-performance MOFs for one-step C 2 H 4 purification.
✓ 已验证
产品关联
DOI
高影响因子
FOOD HYDROCOLLOIDS
·
2025
·
IF 12.4
Bohan Sun,Youming Liu,Rui Sun,Wei Hu,Yi Hao,Yuanyuan Shan,Pengrui Wu,Charles S. Brennan,Gang Wu,Yanglei Yi,Xin Lü
Ovomucin (OVM) exhibits pH-responsive conformational changes, aggregating under acidic conditions and extending under alkaline conditions, making it a promising stabilizer for double emulsions (DEs) designed to protect probiotics in the gastrointestinal environment. This study presents an OVM-based DE system for the efficient encapsulation and delivery of Companilactobacillus crustorum MN047. The primary W 1 /O emulsion was formed by homogenizing olive oil with 4% PGPR and sodium chloride solution (8:2 ratio), followed by homogenization with 2.5% pH 9 OVM solution (3:7 ratio) to create the DE. Particle size, zeta potential, rheology, and interfacial tension analyses confirmed the stabilizing role of OVM under alkaline conditions, whereas CLSM and circular dichroism revealed the structural effects of OVM, resulting in increased α-helix and decreased β-sheet contents under acidic conditions. DE achieved an encapsulation efficiency of 93.55%, with protection rates of 82.26% in gastric fluid and 66.82% in intestinal fluid. In a dextran sulfate sodium-induced ulcerative colitis mouse model, OVM-encapsulated C. crustorum MN047 demonstrated enhanced effects in inflammation alleviation, intestinal barrier integrity, and gut microbiota regulation. This study underscores the potential of OVM-based DE systems for probiotic oral delivery and introduces an effective encapsulation approach for gastrointestinal applications.
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Xiao Zhang,Menglin Zhang,Zhiren Guo,Xiang Li,Ting Liu,Jinying Li,Dongxiang Zhang,Xiyan Xu
The persistent contamination of aquatic environments by tetracycline (TC) necessitates advanced remediation strategies. Herein, a ternary Fe–O–P-co-modified graphitic carbon nitride (FOPCNx) was synthesized via structural integration of Fe–N2 configurations with O/P dual doping for efficient TC degradation in a solar-driven photo-Fenton system. This study pioneers the synergistic coupling of Fe–N2 coordination and heteroatomic O/P substitution to optimize charge dynamics. Comprehensive characterization confirmed the formation of Fe–N2 active sites and aromatic structures incorporated with the aromatic group, which collectively enhanced visible-light absorption, suppressed electron–hole recombination, and facilitated charge carrier redistribution. The optimized FOPCN2 demonstrated exceptional photoelectric efficiency (3.7-fold higher photocurrent density than pristine g-C3N4) and achieved 98.9% TC removal within 40 min of irradiation with a kinetic constant of 0.113 min–1, outperforming conventional systems. Mechanistic studies revealed dual enhancement pathways: Fe–N2 sites promoted electron transfer and Fe(III)/Fe(II) cycling, while the O/P dual doping enabled electron delocalization for improved charge mobility. The system exhibited remarkable pH adaptability (3–7), robust resistance to inorganic anions, and universal degradation capability for mixed organic pollutants. Three TC degradation pathways were identified through intermediate analysis, with radical trapping and EPR verification confirming the dominant roles of •OH, e–, and O2•–. This work provides critical insights into structure–activity relationships for carbon nitride modification, establishing a paradigm for designing multifunctional photocatalysts for antibiotic-contaminated wastewater remediation.
✓ 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）