NEW JOURNAL OF CHEMISTRY
·
2024
·
IF 2.7
Yongzhao Zhang,Xuzheng Chen,Yunlei Zhou,Tao Feng,Luping Lyu,Zhenya Zhu,Yifan Liu
The efficient transformation of glucose into 5-hydroxymethylfurfural (5-HMF) is crucial for sustainable bio-refinery processes, but achieving high production efficiency remains challenging. In this study, we presented the preparation of Al-containing metal-organic frameworks (MOFs), specifically MIL-53(Al), MIL-53(Al)-NO2, and MIL-53(Al)-NH2, using different ligands as catalysts to enhance the production of 5-HMF from glucose. Comprehensive characterization provided valuable insights into the properties of the synthesized MOFs. The synthesized MOFs exhibited varied MIL-53(Al) states, morphologies, and thermal stabilities based on the different ligands employed, which in turn affected their catalytic performance. Among the Al-containing MOFs synthesized, MIL-53(Al)-NH2 demonstrated remarkable catalytic capabilities for the conversion of glucose to 5-HMF. This MOF achieved an impressive 5-HMF yield of 53% and a reaction selectivity of 54%. The catalytic efficiency was further enhanced by leveraging the synergistic effect of MIL-53(Al)-NH2 in combination with Amberlyst-36, resulting in a 5-HMF yield of 59% and a reaction selectivity of 60%.
✓ 已验证
产品关联
DOI
高影响因子
DYES AND PIGMENTS
·
2025
·
IF 4.2
Mengrong Hu,Zheng Li,Shufang Gao,Han Pan,Jian Luo
The excited-state intramolecular proton transfer (ESPT intra ) process in flavonoids has attracted considerable attention due to its fundamental role in their photophysics. This study systematically investigates the photophysical properties of 5-methoxyflavone (5MF), a flavonoid derivative incapable of ESPT intra . It was demonstrated that intermolecular hydrogen bonding with protic solvents effectively suppress the non-radiative ππ∗-nπ∗ internal conversion in 5MF, leading to significant fluorescence enhancement. In highly acidic aqueous solutions (pH < 3.3), an excited-state intermolecular proton transfer (ESPT inter ) process takes place, generating protonated 5MF (5MFH + ) and resulting in fluorescence quenching. Notably, when incorporated in acidic poly(vinyl alcohol) (PVA) films, the excited-state protonated species 5MFH + exhibits intense fluorescence with a long fluorescence lifetime of 8.4 ns, owing to the suppression of non-radiative decay pathways by the rigid polymer network. Additionally, the dense hydroxyl groups in the PVA matrix also enhance the emission of neutral 5MF. These results highlight the potential of both 5MF and 5MFH + as efficient luminescent chromophores for the design of optical materials based on hydrogen-bonding polymer systems.
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED SYNTHESIS & CATALYSIS
·
2025
·Vol. 367
·期 17
·e70093
·
IF 4
Anirban Chowdhury,Akkammagari Putta Rangappa,Wenhua Xue,Yixuan Liu,Jun Zhao
The photocatalytic oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-diformylfuran (DFF) is a promising process with significant implications for sustainable energy and environmental applications. However, achieving highly selective DFF production from HMF remains a challenging task, particularly due to the dependency of molecular O 2 activation on the composition and exposed facets of nanomaterials. This study investigates the impact of different preferential facets of hydrothermally synthesized cadmium sulfide (CdS) morphologies—including hollow spheres, nanorods, and flower-like structures—on the photocatalytic oxidation of HMF to DFF. The findings reveal that the preferential CdS (002) facet and Cd vacancies in the hollow sphere morphology significantly enhance photocatalytic activity, achieving 68% HMF conversion and 89% selectivity for DFF production within 12 h of reaction time. This work highlights the critical role of material composition and facet orientation in optimizing photocatalytic processes for selective oxidation reactions, offering a potential strategy for the design of advanced photocatalysts in sustainable chemical production.
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Huifang Zhao,Xiunan Xu,Mi Shi,Yi Chen,Bowei Guan,Fujuan Peng,Jinze Li,Yuanyuan Zhao,Lu Zhang,Ruiping Zhang
Spatial lipidomics analysis of three-dimensional (3D) tumor cell spheroids enables in-situ investigation of metabolic reprogramming across distinct regions cellular regions within a single spheroid. However, it is still a challenge to study the effect of 5-fluorouracil (5-FU) with 3D HepG2 spheroid on the alteration of abundance and spatial distribution of endogenous lipid species. Herein, we systematically optimized the matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI MSI) methodologies for extending spatial lipidomics to in-situ screening and visualizing lipid changes in 3D HepG2 spheroids treated with 5-FU at the microregional level. The embedding protocols in carboxymethyl cellulose (CMC), gelatin, and optimal cutting temperature (OCT) compound of 3D HepG2 spheroid were evaluated for MALDI MSI analysis with 10 μm spatial resolution, respectively. Subsequently, CMC embedding of 3D HepG2 spheroid completely preserved the 3D spatial structure and enabled the division into the core necrotic area, intermediate quiescent area, and outer proliferative area from the spatial lipidic ion spectra. Furthermore, we spatially screened and identified 35, 40, and 30 distinct lipid molecules associated with 5-FU treatment in the 3D HepG2 spheroid of necrotic, quiescent, and proliferative areas, respectively. The main dysregulated metabolic pathway was the biosynthesis of glycerophospholipid metabolism, providing the reliable evidence for the mechanism of 5-FU anticancer effect on hepatocellular carcinoma (HCC). In addition, the spatial lipidomic results demonstrated that PA, PC, PG, PI, and SM contents in 5-FU treated tumor spheroids were significantly changed and limited the formation of the central necrotic area. This innovative combination of MALDI MSI with 3D HepG2 spheroids can be conducive to our better understanding of the biological processes between 5-FU triggered lipid metabolism and HCC heterogeneous structure.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL PHYSICS LETTERS
·
2021
·
IF 2.328
Quanhua Wang,Sai Li,Yanchao Liu,Lichen Zhang,Jiajun Zheng,Binbin Fan,Shuwei Chen,Wenlin Li,Ruifeng Li
Flowerlike hierarchical SAPO-5 molecular sieve was fabricated by a hydrothermally dynamic crystallization route using tetrapropyl-ammoniuhydroxide as a single structure-directing agent. The hierarchical SAPO-5 reveals high crystallinity, and large external surface areas validated by the XRD and N 2 adsorption-desorption. SEM and TEM indicate that the flowerlike hierarchical SAPO-5 is composed of loosely stacked primary nanorods with average diameter of 20 nm. FT-IR and EDS analyses show that as increasing crystallization time, more and more Si species are incorporated into the AFI crystals. Moreover, it is found that a dynamic crystallization condition is very mandatory toward the synthesis of a novel-flowerlike SAPO-5.
✓ 已验证
DOI
高影响因子
TRANSITION METAL CHEMISTRY
·
2017
·Vol. 42
·期 4
·273-283
·
IF 1.358
Fang Dong-Lin,Mo Shao-Yin,Wu Kai-Fei,Huang Zhong-Jing
Three coordination polymers have been obtained by hydrothermal synthesis, namely [Zn(imip)(H 2 O) 2 ]·0.5H 2 O ( 1 ), [Co(imip)(H 2 O) 2 ]·0.5H 2 O ( 2 ), and [Cd 2 (imip) 2 (H 2 O) 3 ] ( 3 ) [H 2 imip = 5-(1H-imidazol-1-yl) isophthalic acid]. The coordination polymers were characterized by IR spectra, elemental analysis, powder X-ray diffraction, and thermogravimetric analysis. Furthermore, single-crystal X-ray analysis reveals that they have 2D structures, which are extended into 3D networks via O–H···O hydrogen-bonding interactions. The luminescent properties of these coordination polymers were investigated.
✓ 已验证
DOI
高影响因子
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2023
·Vol. 39
·期 6
·1064-1069
·
IF 3.1
He Huan,Zou Zhengxi,Hua Weiming,Yue Yinghong,Gao Zi
A series of ZnO-modified cobaltous ion exchanged ZSM-5 catalysts is prepared using incipient wetness impregnation and characterized by X-ray diffraction (XRD), N 2 adsorption, transmission electron microscopy (TEM), UV-Vis diffuse reflectance spectroscopy (DR UV-Vis), X-ray photoelectron spectroscopy (XPS), pyridine-adsorbed Fourier transform infrared (Py-IR) and Raman. Their catalytic performance towards CO 2 -assisted dehydrogenation of ethane to ethylene has been evaluated. The addition of ZnO onto CoZSM-5 obviously improved the yield of ethylene as well as the conversion of CO 2 . The promoting effect is attributed to the good activity of ZnO for the reverse water gas shift (RWGS) reaction, which enhances the coupling between RWGS and ethane dehydrogenation.
✓ 已验证
DOI
高影响因子
Advanced Optical Materials
·
2021
·Vol. 10
·期 4
·2102041
·
IF 9.926
Yangyi Zhang,Songyang Yuan,Yaxuan Yuan,Yunkai Bao,Qing Ran,Enming Liu,Jiandong Fan,Wenzhe Li
Organic–inorganic hybrid metal halide perovskites have played an important role in optoelectronic and photonic community owing to their remarkably high photoluminescence quantum yields and color tunability with ultrafast emission performance. Herein, two kinds of novel perovskite single crystals, i.e., TpyInCl 3 and TpyInCl 5 , grown by means of a solution-processed hydrothermal method are innovatively designed. Regulating the polarity of the precursor solution allows to fine-tune the light emission from pink to blue with an extremely short photoluminescence lifetime of 2.5 ns. The density functional theory calculations reveal that the unique luminescence characteristics are associated with the contribution of the terpyridine π–π* transition and the exciton quenching in the inorganic framework, that is, InCl 3 /[In 2 Cl 10 ] 4− , wherein the reduction of the recombination path and the increase of exciton quenching can effectively increase the luminous intensity. The current study provides a new paradigm toward designing multifunctional perovskite materials with tunable structure and electron dimension in emitter devices.
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2012
·
IF 3.07
Qiang Song,Lijian Ma,Jun Liu,Chiyao Bai,Junxia Geng,Hang Wang,Bo Li,Liyue Wang,Shoujian Li
A new solid-phase extraction adsorbent was prepared by employing a two-step “grafting from” approach to anchor a multidentate N -donor ligand, 5-azacytosine onto hydrothermal carbon (HTC) microspheres for highly selective separation of U(VI) from multi-ion system. Fourier-transform infrared and X-ray photoelectron spectroscopies were used to analyze the chemical structure and properties of resultant HTC-based materials. The adsorption behavior of U(VI) onto the adsorbent was investigated as functions of pH, contact time, ionic strength, temperature, and initial U(VI) concentration using batch adsorption experiments. The U(VI) adsorption was of pH dependent. The adsorption achieved equilibrium within 30 min and followed a pseudo-second-order equation. The adsorption amount of U(VI) increased with raising the temperature from 283.15 to 333.15 K. Remarkably, high ionic strength up to 5.0 mol L −1 NaNO 3 had only slight effect on the adsorption. The maximum U(VI) adsorption capacity reached 408.36 mg g −1 at 333.15 K and pH 4.5. Results from batch experiments in a simulated nuclear industrial effluent, containing 13 co-existing cations including uranyl ion, showed a high adsorption capacity and selectivity of the adsorbent for uranium (0.63 mmol U g −1 , accounting for about 67% of the total adsorption amount).
✓ 已验证
DOI
高影响因子
Molecular Catalysis
·
2025
·
IF 4.9
Yanxing Wang,Na Chen,Xuefang Chen,Hailong Li,Lian Xiong,Hairong Zhang,Fen Peng,Xinde Chen
Biomass derivative 5-Hydroxymethylfurfural (HMF) can be selectively oxidized to generate 2,5-furandicarboxylic acid (FDCA), which is one of the important reaction pathways for the high-value utilization of biomass. However, the industrialization of the FDCA production via HMF oxidation still faces many challenges. This study found that the ruthenium(Ru) catalysts loaded on the macroporous adsorption resin (Ru/ST-DVB-560) exhibited excellent catalytic activity for the catalytic oxidation of HMF. After reacting in a weak base system for 10 h, HMF was completely converted with 96.60 % FDCA yield. The Ru/ST-DVB-560 catalysts maintained high catalytic activity after being cycled 5 times, and the FDCA yield decreased by only 3.9 %. Furthermore, the reaction products can be easily separated from the Ru/ST-DVB-560 catalysts, and the catalysts can be easily recycled and regenerated. Therefore, this study provides a stable and recyclable high-efficiency Ru/ST-DVB-560 catalyst, which is of great significance for the industrialization of the HMF oxidation to FDCA.
✓ 已验证
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·
IF 3.9
Yongyue Bai,Lei Ye,Yunxing Bai,Peng Zhou,Yongrui Wang,Ying Ouyang,Weixin Huang,Jichang Liu,Xingtian Shu,Wenjie Yang,Youhao Xu
Coconversion of hydrocarbons offers a sustainable and efficient route to high-value products while lowering the cost and energy demand for pure feedstock preparation. Here, we propose a cocracking process for alkanes and alkenes, and systematically investigate their interactions under mixed feed conditions through experiments and simulations. Introducing 0–40% alkanes into the alkene feed enhances conversion and maintains high selectivity for light olefins while suppressing methane and aromatics. At 20% alkane, the combined selectivity of ethylene and propylene reaches 69.8%, with an ethylene/methane ratio of 11.94. Validation experiments using cocracking of pentadiene and n-pentane with in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) show that dienes improve the product profile of alkane cracking and strengthen n-pentane adsorption on acidic zeolites, which favors alkene formation and suppresses methane and aromatics. Density functional theory (DFT) calculations further support that interactions between pentadiene and n-pentane facilitate a shift in the cracking pathway from a pentacoordinate to a tricoordinate carbocation mechanism, lowering the energy barrier. This work demonstrates a feasible strategy for the production of light olefins via hydrocarbon coconversion and advances mechanistic understanding of alkane–alkene cocracking.
✓ 已验证
DOI
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2026
·
IF 6.7
Di Zhang,Kunpeng Yang,Yuting Fan,Ding Jia,Dejun Ma,Yu-Cheng Gu,Han Xu,Zhen Xi
The development of 1-deoxy-d-xylulose-5-phosphate synthase (DXPS) inhibitors still needs an innovative extension with novel chemotypes to avoid herbicide resistance. Herein, a series of 2,4-diphenylquinoline derivatives were designed, synthesized, and structurally optimized from lead compound 24 via stepwise A/B/C-ring modification. Greenhouse assays identified a-3 (3-CF3 A-ring) as the most potent analogue, exhibiting the higher herbicidal activity (71.4% inhibition on DESSO at 375 g a.i./ha) and dosage tolerance than 24. The mechanism of compound a-3 targeting DXPS proteins has been also identified using surface plasmon resonance binding assay, physiological biomarker measurement, substrate accumulation, and molecular docking. The key active motifs between a-3 and DXPS have been further defined based on the structure–activity relationships. This work will further expand the structural diversity of DXPS inhibitors with higher bioactivity.
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）