CHEMICAL ENGINEERING JOURNAL
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2024
·
IF 13.3
Wei Zhou,Wanglong Mao,Pingyang Huang,Xiong Huang,Haoyuan Xu,Bo Wu,Xiaofang Jiang,Xiangtao Chen,Hanyu Liu,Guofu Zhou,Jinyou Xu
This study introduces a facile method for the controlled growth of addressable planar arrays of highly luminescent, catalyst-free 1,4-bis(5-phenyloxazol-2-yl)benzene (POPOP) nanowires. By employing a hollow mask over a faceted sapphire substrate, simultaneous control over the position and orientation of the nanowires is achieved through a mask-confined graphoepitaxial growth, offering substantial advantages over traditional post-growth assembly techniques. High-temperature annealing creates parallel nanogrooves on the sapphire surface, inducing a graphoepitaxial effect that aligns the nanowires with a consistent [102] crystallographic axis. The hollow mask further aids in precisely localizing nanowire growth through its shadowing effect. Optoelectronic investigations reveal that these nanowires emit intense and stable blue photoluminescence at room temperature, with a broad spectrum spanning from 400 to 600 nm. This luminescence is achieved through excitation by continuous-wave ultraviolet light or two-photon absorption using femtosecond infrared light. Notably, the emission quantum efficiency of POPOP nanowires reaches 59 %, a remarkable improvement over the 12 % observed in powder counterparts when excited with 405 nm light. Transit absorption spectra indicate that ground state bleaching and excited state absorption display consistent kinetics within a 100 ps time window, suggesting the same origin from singlet excitons. The precise alignment and positioning of these nanowires make them viable for in-situ integration into photodetectors with rapid ultraviolet light responses. This study advances the controlled growth of catalyst-free nanowire arrays and enhances the understanding of the optoelectronic properties of POPOP nanowires.
研究领域:
材料科学
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纳米科技
·
光电子学
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凝聚态物理
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表面科学
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有机半导体
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高影响因子
APPLIED CATALYSIS A-GENERAL
·
2012
·
IF 3.903
Hui-hui Wu,Gang Li
In situ growth of ZSM-5 crystals on the surface of Ni-based alloy supports by hydrothermal synthesis and their mechanical, structural stability were investigated. ZSM-5 crystals grown on the wall of a long (750 mm) tubular reactor with a small inner diameter (1 mm) was evaluated as a structured catalyst for cracking of n -heptane as a model endothermic fuel. The results have shown that the adhesion strength between ZSM-5 crystals and the support was strong enough to resist a heating/fast-cooling cycle (the sample was immersed into water immediately after being heated to be 750 °C). The crystalline structure of ZSM-5 crystals was also stable against the heating/fast-cooling cycle. The structured catalyst was shown to be catalytically active for cracking of n -heptane (LHSV = 200 h −1 ) at 700 °C. The formation rates of gaseous cracking products were 9.8 ml min −1 and 29.3 ml min −1 for the bare tubular reactor and the tubular reactor with ZSM-5 crystals grown on the wall, respectively. These structured catalysts show high promise for cracking of endothermic fuels at high temperatures.
研究领域:
催化化学
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材料科学
·
化学工程
·
能量转换
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JOURNAL OF HAZARDOUS MATERIALS
·
2026
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IF 11.3
Shuo Wang,Xinjie Gu,Xilin Geng,Ziyi Zhao,Lili Tian,Xiaolin Du,Yaran Song,Ningyi Chen,Keju Sun,Qingrui Zhang
Reducing heavy metals to trace levels in actual complex industrial wastewater remains a major challenge due to high salinity, organic interferences, and multi-metal competition. Ionic liquids (ILs) are promising for metal remediation but suffer from limited active site accessibility and slow diffusion in conventional immobilized nanocomposites. Here, a scalable fibrillation strategy is developed based on precise molecular spatial confinement self-assembly, wherein lacunary Keggin-type SiW 11 clusters integrate with amphiphilic cations to yield one-dimensional IL nanofibrils. These IL nanofibrils feature ultrathin diameters (< 5 nm), high aspect ratios (> 10 3 ), and strong negative zeta potentials (< −30 mV), enabling full active site exposure and rapid heavy metal transport. As a result, they achieve > 96.8 % removal efficiency under high salinity and multi-metal competition, with a Pb(II) distribution coefficient ( K d ) of 28,877.5 mL/g—over 490-fold higher than commercial sulfonated polystyrene resins. Ultrafast kinetics were observed, with pseudo-second-order rate constants (k 2 ) 6–10 times greater than those of supported ILs. In continuous-flow tests across five real industrial sites, the nanofibrils demonstrated purification capacities of 3678–6940 L/kg, consistently reducing effluent Pb(II) below 0.1 mg/L (GB21900–2008, China). Charged IL nanofibrils can be easily regenerated with negligible performance loss and at minimal cost, thereby constituting a robust and scalable platform for the deep extraction of heavy metals from real complex effluents. More broadly, this fibrillar IL construction strategy unlocks programmable interfacial chemistry for advanced wastewater treatment systems.
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DOI
PubMed
高影响因子
TURKISH JOURNAL OF CHEMISTRY
·
2024
·Vol. 48
·期 4
·597-619
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IF 1.3
YUAN HANG,CAO GUI-PING,LV HUI
The reaction solvent and catalyst play an essential role in the Prins reaction for the synthesis of 3-methyl-3-buten-1-ol (MBO) from formaldehyde and isobutene. The reactivity of the solid base catalyzed Prins condensation reaction by formaldehyde and isobutene in supercritical CO2 was investigated using CsH2PO4 modified HZSM-5. We finds that the alkaline sites of the alkali-loaded catalyst can extract the α-H on isobutene to generate olefin carbon negative ions, while the supercritical CO2 with weak Lewis acidity can activate formaldehyde to carbon positive ions, which can combine more easily with the carbon negative isobutene to react, thus improving the reactivity of the reaction system.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·Vol. 65
·期 32
·16970-16984
·
IF 3.9
Li Lingfeng,Xiong Yongzhi,Huang Yuxin,Zhang Yiling,Li Chenge,Liu Qi,Zhou Junfang,Wang Yihan,Chen Changzhou,Wang Kui,Jiang Jianchun
In this study, we present a straightforward synthesis
strategy
to prepare transition metal sulfide electrocatalysts supported on
sulfonated carbon nanotube-chitosan-derived carbon aerogel. Highly
dispersed Ni 3 S 2 @CNT, Cu 7 S 4 @CNT, and Co 4 S 3 @CNT were successfully fabricated
and applied for 5-hydroxymethylfurfural (HMF) electrooxidation to
2,5-furandicarboxylic acid (FDCA). Among them, Co 4 S 3 @CNT exhibited remarkable electrocatalytic activity, delivering
a current density of 100 mA cm –2 at a low potential
of 1.367 V (vs RHE) while attaining 99.82% HMF conversion, 99.97%
FDCA selectivity and a Faradaic efficiency of 83.75%. Electrochemical
measurements revealed that Co 4 S 3 @CNT possesses
an electrochemical active surface area (ECSA) of 0.781 μF cm –2 , which is higher than those of Ni 3 S 2 @CNT and Cu 7 S 4 @CNT, implying an increased
population of active sites and enhanced catalytic activity. In-situ
Raman spectroscopy reveals that Co 4 S 3 @CNT undergoes
a progressive reconstruction from Co(OH) 2 to CoOOH under
anodic conditions, with CoOOH formation being significantly delayed
in the presence of HMF, confirming its role as the active phase. Density
functional theory (DFT) calculations further indicate that the excellent
performance of Co 4 S 3 @CNT originates from the
lowest energy barrier (1.84 eV) for the rate-determining catalyst
activation dehydrogenation step, coupled with its pronounced charge-polarization
capability that facilitates HMF preactivation. This work gives a promising
design approach for developing efficient nonprecious metal electrochemical
catalysts toward biomass valorization.
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Shangpu Zhuang,Di Hao,Yilin lei,Jiahui Chu,Fan Xue,Tao Wei,Yuyu Sun,Zhuxiu Zhang,Ruiping Wei,Jihai Tang,Xu Qiao
MOF-templated strategy fabricates highly dispersed Cu x Ni 2-x /CeO 2 catalysts. • Cu 1.2 Ni 0.8 /CeO 2 achieves 100% BHMF yield under mild reaction conditions. • Cu-O V interfacial sites induce vertical adsorption for C=O selective activation. • Ni-promoted H spillover boosts hydrogenation efficiency. Efficient utilization of biomass is a cornerstone of green chemistry and sustainable development. 5-Hydroxymethylfurfural (5-HMF) constitutes a pivotal biomass-derived platform molecule which selective hydrogenation into 2,5-bis(hydroxymethyl)furan (BHMF) plays a crucial role in the development of bio-based materials and fine chemicals. Conventional monometallic catalysts, however, are often constrained by an intrinsic trade-off between activity and selectivity and tendencies toward particle sintering and deactivation. To address these challenges, a metal–organic-framework (MOF) precursor was employed in a self-sacrificial templating route to fabricate highly dispersed, oxygen vacancies-tunable, bimetallic Cu x Ni 2–x /CeO 2 catalysts. By integrating comprehensive physicochemical characterization with in-situ spectroscopies, a systematic investigation was conducted to examine the effects of the Cu/Ni ratio and oxygen vacancy (O V ) concentration on 5-HMF hydrogenation were systematically investigated to elucidate structure–activity relationships. The results demonstrate that the Cu 1.2 Ni 0.8 /CeO 2 catalyst achieves an optimal balance between O V and metal site distribution, enabling nearly complete 5-HMF conversion and exclusive selectivity toward BHMF. Interfacial synergy facilitates Ni-mediated H 2 dissociation and hydrogen spillover to Cu sites, while the O V selectively adsorbs and activates the carbonyl of HMF, suppressing furan-ring hydrogenation and other side reactions. Compared with prior reports, this work highlights the decisive roles of O V and bimetallic interfaces in promoting substrate-selective adsorption, active-hydrogen supply, and side-reaction suppression. This strategy advances the high-value conversion of biomass platform molecules and provides a conceptual foundation for the rational design of green catalysts. Download: Download high-res image (116KB) Download: Download full-size image
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Yu Tian,Huina Liu,Jianan Li,Yuanyuan Ding,Manman Zhu,Chenguang Liu
A multiscale engineering strategy integrates THEDES with thermosensitive hydrogels. • THEDES enhances 5-ASA solubility, permeability, and anti-inflammatory efficacy. • THEDES-Gel enables prolonged colonic retention and controlled release. • THEDES-Gel provides a versatile platform for insoluble drugs for UC treatment. Overcoming the low aqueous solubility, poor mucosal permeability, and imprecise delivery of drugs remains a critical challenge in pharmaceutical engineering. Herein, we designed a novel therapeutic deep eutectic solvent (THEDES) using 5-aminosalicylic acid (5-ASA) and L-arginine (Arg) at a molar ratio of 1: 1.4, which functioned as both a solubilizer and osmotic enhancer of 5-ASA. THEDES showed satisfactory viscosity (61.7 ± 1.3 Pa·s), pH (8.9), zeta potential (−12.0 ± 1.4 mV), and anti-inflammatory activity when using in colonic microenvironment. To address the subsequent challenges of rapid clearance and leakage of THEDES at the colon lesion site, THEDES was loaded into a poloxamer 407 hydrogel with methylcellulose as the adhesive to construct an in-situ gelling enema system (THEDES-Gel). Notably, the engineered THEDES-Gel significantly prolonged colonic retention compared to THEDES alone, while achieving a high cumulative release rate of 5-ASA (97.0 ± 0.8% at 6 h) under the effect of “Push-Pull-Permeate”. Furthermore, THEDES-Gel was demonstrated to have a significant alleviating effect during the treatment of UC in mice by reducing inflammation and maintaining the normal structure of colonic tissue. THEDES-Gel demonstrates a rational materials design strategy that couples molecular-scale solvent engineering of drugs with macroscopic drug delivery system fabrication for the efficient utilization of insoluble drugs.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Peng Shan,Hong Wang,Zhihang Xu,Yilin Wang,Chenglong Fu,Jinwen Hu,Yehan Tao,Xiaodong Xia,Jian Du,Haisong Wang
An adsorption-triggered mechanism was proposed for on-demand release. • Acidic sites on ZSM-5/ZIF-8 possess stronger adsorption energy for biogenic amines than CA. • The mechanical and gas barrier of film were improved after introducing ZSM-5/ZIF-8. • The developed packaging effectively prolonged fish preservation at 4 °C. Active packaging with on-demand release capability has attracted increasing interest in food preservation; however, the delayed response of active agents often compromises protection during the early stage of spoilage. In this work, an adsorption-triggered release strategy was proposed by incorporating cinnamaldehyde (CA)-loaded ZSM-5/ZIF-8 nanoparticles (CA@ZSM-5/ZIF-8) into a sodium alginate (SA) matrix. Owing to the strong affinity of biogenic amines toward the adsorption sites of ZSM-5/ZIF-8, low concentrations of histamine could competitively displace the preloaded CA, thereby enabling an early and responsive release behavior. In the absence of histamine, the cumulative release of CA from the composite film remained below 10% within 12 h, whereas it increased to approximately 60% in the presence of 5.0 mM histamine. Meanwhile, the optimized film exhibited improved tensile strength (54.6 MPa), water vapor barrier performance (0.86 × 10 −10 g·m·m −2 ·s −1 ·atm −1 ), UV-shielding capability, and water resistance. The film also showed pronounced antioxidant activity (91.4%), sustained antibacterial effects against E. coli and S. aureus , and favorable biodegradability. When applied to fish preservation, the optimized film effectively extended the refrigerated shelf life to 6 days at 4 °C. This study provides a novel paradigm for on-demand release in intelligent food packaging.
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CARBOHYDRATE RESEARCH
·
2026
·
IF 3.4
Dongqi Liu,Jun Qian,Xing Chen,Qiaoling Liu,Xiaolei Liu,Xiaoqian Wang,Siyu Zhou,Ying Guan,Liang Zhou,Siquan Xu
A SnCl 4 ·5H 2 O/LVA-DMSO binary system was developed for glucose conversion. • The optimized system achieved 84% HMF yield at 150 °C within 10 min. • DMSO enhanced HMF formation by improving solvation and suppressing side reactions. • Balanced Lewis-Brønsted acidity was crucial for glucose to HMF. A deep eutectic solvent (DES) composed of SnCl 4 ·5H 2 O and levulinic acid (LVA) was developed and combined with dimethyl sulfoxide (DMSO) to construct an efficient reaction medium for the conversion of glucose into 5-hydroxymethylfurfural (HMF). Under the optimized conditions, the Sn/LVA-16-DMSO binary solvent, coupled with AlCl 3 ·6H 2 O as the catalyst, afforded an HMF yield of 84% at 150 °C within 10 min. The effects of key parameters, including solvent composition, DES molar ratio, catalyst dosage, glucose dosage, reaction temperature, and reaction time, were systematically investigated. Response surface methodology (RSM) revealed that reaction temperature and glucose dosage were the most significant linear factors affecting HMF yield within the studied range. The system also showed acceptable recyclability, as HMF could be extracted from the reaction mixture with a recovery efficiency of 86%, and an HMF yield of 52% was retained after five consecutive cycles. FTIR, DSC, TG, and DTG analyses indicated that the Sn/LVA DES formed a strong hydrogen-bonding network and modified the coordination environment of Sn species, while the combination of DMSO and AlCl 3 ·6H 2 O further provided favorable solvation and Lewis-Brønsted acid synergy for glucose conversion. Compared with previously reported DES-based systems, the present homogeneous DES-DMSO strategy combines a high HMF yield of 84% with a short reaction time of only 10 min, demonstrating an efficient approach for the rapid conversion of glucose to HMF. Download: Download high-res image (416KB) Download: Download full-size image
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ACS Omega
·
2026
·
IF 5.2
Yulin Sun,Yiwei Zhang,Yong He,Wubin Weng,Yanqun Zhu,Peixi Liu,Zhihua Wang
Mn-based catalysts usually exhibit considerable potential for enhancing the catalytic ozonation of volatile organic compounds (VOCs) at a lower temperature. In this study, bimetallic oxides M-Mn (M = Cr, Cu, Co) were supported on HZSM-5 zeolites to degrade dimethyl carbonate (DMC, chemical formula C3H6O3), a typical VOC emitted during the productive process of lithium batteries, with Mn/ZSM-5 for comparison. The Cr-doped catalyst CrMn/ZSM-5 could achieve 92% DMC conversion with 91% CO2 selectivity (O3/DMC = 6, T = 120 °C), showing an excellent catalytic performance among the prepared catalysts. The exceptionally low-temperature activity of CrMn/ZSM-5 was attributed to the synergistic effect of its large surface area, sufficient oxygen vacancies, and suitable acidity and reducibility, which collectively enhanced the level of O3 activation and accelerated DMC degradation. Furthermore, the catalyst demonstrated desirable stability and resistance to varying concentrations of water vapor. To elucidate the reaction pathway, in situ DRIFTS was employed to track the evolution of intermediate species during the adsorption and catalytic ozonation of DMC. With a further study of DFT calculation, the reaction mechanism of DMC catalytic ozonation on CrMn/ZSM-5 catalysts was put forward.
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PubMed
高影响因子
Inorganic and Nano-Metal Chemistry
·
2026
·
IF 1.7
Heng-Feng Du,Jia-Tian Shang,Hong-Biao Tang,Shi-jie Wang,Xing Li
Functionalized Au nanomaterials have significant potential in colorimetric detection of fatal toxic metals. In this work, a simply colorimetric sensor was designed and prepared for visual detection of Hg(II) ions based on gold nanoparticles (AuNPs) modified by 5-(m-aminophenyl)tetrazole (APT) and characterized by transmission electron microscopy (TEM), dynamic light scattering (DLS) and UV − vis absorption spectroscopy. The colorimetric sensor exhibited the fine anti-interference and selectivity in an environment with the presence of other interfering ions. The limit of detection (LOD) is 0.6 µmol/L by the naked eye, and 0.21 µmol/L by UV-vis spectroscopy, indicating that the sensor of AuNPs modified with APT (APT@ AuNPs) could be used for the quantitative determination of Hg2+. Based on the above peculiarity, the sensor could be used to detect Hg2+ in real samples.
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CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Qida Peng,Huihui Su,Jiannan Qin,Hao Cheng,Mingfu Li,Pingjun Zhang,Liqun Jiang
2,5-Furandicarboxylic acid (FDCA) is a promising renewable alternative to petroleum-derived terephthalic acid for the production of bio-based polyesters. However, achieving efficient thermocatalytic oxidation of 5-hydroxymethylfurfural (HMF) to FDCA under mild conditions remains challenging. Herein, we report a lignin-derived nitrogen-doped carbon-supported Co–Mn dual single-atom catalyst (CoMn/LNC) prepared by a chelation-pyrolysis method, which achieves a 99.9% FDCA yield with a productivity of 1542.0 μmol FDCA ·g cat −1 ·h −1 at 65 °C using air as the oxidant. Physicochemical characterizations indicate that an asymmetric CoN 3 –MnN 3 electronic configuration in CoMn/LNC serves as the key catalytic center, which lowers the reaction activation energy and promotes the formation of FDCA under mild condition. Combined density functional theory calculations and in situ DRIFTS reveal that the asymmetric coordination modulates the d-band center, enhances interfacial electron transfer, and promotes HMF adsorption and subsequent oxidation. Furthermore, the asymmetric configuration facilitates oxygen activation and shifts the rate-determining step from the oxidation of HMFCA to FFCA toward FDCA desorption. This work provides a feasible strategy for designing transition metal dual single-atom catalysts for HMF oxidation to FDCA.
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