ACS Applied Nano Materials
·
2025
·
IF 5.5
Jiaxin Li,Junhui Liang,Xin Yao,Hongming Liu,Yuhui Du,Huayu Chen,Hangning Chen,Chenhao Du,Liuqi Wang,Yincheng Li,Yuexiang Huang,Da Chen
The development of low-temperature, nonprecious metal thermocatalysts for ammonia decomposition holds significant promise for advancing the green hydrogen industry. LaNiO3 catalysts, with their perovskite structure (ABX3), are notable for enabling in situ growth of active metal Ni on reduced oxide supports during ammonia decomposition reactions (ADRs). However, unintentional in situ growth can lead to uncontrolled reactions and metal particle agglomeration. To address this, we employed a straightforward high-temperature and pressure hydrogenation pretreatment process to enhance the interaction between the active metal and the support, thereby suppressing the agglomeration of the active metal during the ADR process. Our results indicate that the hydrogenation pretreatment catalyst exhibits finer Ni metal nanoparticles, with an average size of approximately 8 nm. Under a gas hourly space velocity (GHSV) of 18,000 mL gcat–1 h–1 and at 550 °C, the NH3 conversion efficiency reaches 90%, which exhibited excellent stability over a period of 100 h. Additionally, we utilized TEM, XPS, EPR, NH3-TPD, and H2-TPR techniques to elucidate the intrinsic mechanisms related to the enhanced catalytic activity. This study addresses the issue of active metal nanoparticle agglomeration through hydrogenation pretreatment.
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2025
·
IF 7.5
Guoyang Zhao,Yafei Guo,Pu Huang,Zhouzhou Zhang,Chuanwen Zhao
Developing highly efficient and robust catalysts for low-temperature CO oxidation is essential for CO abatement in sintering flue gas. CuO-Co 3 O 4 catalysts incorporated with transition metal oxides (TMOs) of CeO 2 , ZrO 2 , NiO or Fe 2 O 3 were synthesized using the sol–gel method. The crystalline structure, morphology, electronic structure, surface active sites and redox properties of the composite catalysts were characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDX), X-ray photoelectron spectroscopy (XPS), CO temperature-programmed desorption (CO-TPD), H 2 temperature-programmed reduction (H 2 -TPR), and O 2 temperature-programmed oxidation (O 2 -TPO). The influence of incorporating TMO on CO oxidation performance of the composite catalysts was thoroughly investigated. Results indicated that incorporating CeO 2 and ZrO 2 enhanced the CO oxidation activity of CuO-Co 3 O 4 significantly, achieving notably low T 100 temperatures of 134 °C and 150°C. The desired CuO-Co 3 O 4 -CeO 2 and CuO-Co 3 O 4 -ZrO 2 composite catalysts also showed outstanding CO oxidation kinetics performance with low activation energies of 25.36 and 26.41 kJ/mol, and remarkable time-on-stream stability, sustaining a near 100 % CO conversion rate for up to 25 h. The superior CO oxidation performance was associated with the smaller crystallite sizes, uniformly dispersed active sites, abundant oxygen vacancies, and enhanced redox properties, all of which stemmed from the strengthened interfacial interactions among the metal oxides upon CeO 2 and ZrO 2 incorporation. These findings offer valuable insights into the structure–property-activity relationships of the CuO-Co 3 O 4 -TMO composite catalysts, positioning the CuO-Co 3 O 4 -CeO 2 and CuO-Co 3 O 4 -ZrO 2 samples as promising candidates for low-temperature CO oxidation in sintering flue gas treatment.
✓ 已验证
产品关联
DOI
高影响因子
OPTICAL MATERIALS
·
2025
·
IF 4.2
Chenyan Lu,Dajie Zou,Yanyan Jia,Yongchang Lu,Huan Wang,Yanfeng He
In this study, a novel nitrogen-chlorine-codoped carbon quantum dots (NCl-CQDs) with low toxicity, thermal stability, good fluorescence properties, biocompatibility and high sensitivity was successfully prepared by hydrothermal carbonization. Based on the above advantages of NCl-CQDs, the NCl-CQDs was used to construct fluorescence sensing system for fluorescence probes. The maximum fluorescence emission wavelength was obtained at 470 nm when the excitation wavelength was 390 nm. The fluorescence signal was in the state of “ON”. The introduction of 2,6-Dichloroindophenol Sodium (DCIP) resulted in the quenching of fluorescence intensity due to photoinduced electron transfer between DCIP and NCl-CQDs. At this point, the color of the solution changed from brownish-yellow to light blue, indicating that the fluorescence signal was in an “OFF” state. Upon addition of ascorbic acid (AA) to the NCl-CQDs/DCIP system, the corresponding fluorescence signal was restored due to the special interaction between AA and DCIP. The color of the corresponding solution changed from light blue to colorless. The fluorescence signal was in the “on” state. Therefore, an “ON-OFF-ON” sensing system and colorimetric sensing system for AA was constructed using the NCl-CQD fluorescence probe. Under the optimized experimental conditions, the proposed methods exhibited satisfactory linear ranges. Specifically, the linear range for AA detection by the fluorescence sensor spanned from 1.2 μM to 180.33 μM, while that by the colorimetric sensor ranged from 1.32 μM to 166.55 μM. The corresponding detection limits were determined to be 0.68 μM and 0.55 μM, respectively. In summary, this sensing system could effectively enhance selectivity, sensitivity, and accuracy by preventing false positive detection results caused by environmental and system errors.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE
·
2025
·
IF 3.3
Li Junjie,Liu Kunyi,Kang Kaijie,Zhao Lina,Zhang Banglei,Li Lang,Huang Hai,Jiang Liwen
Fermented salt-free bamboo shoots, a traditional fermented vegetable product, are esteemed in southern China for their unique flavor and aroma. The distinctive taste of these shoots is attributed to the volatile organic compounds (VOCs) and organic acids produced during fermentation. This study explored how organic acids and VOCs change over a 60-day fermentation period. The findings revealed notable variations in pH, total sugars, and organic acids throughout the process. Utilizing GC-IMS (gas chromatography-mass spectrometry) analysis, 65 volatile organic compounds (VOCs) were detected, which comprised alcohols, aldehydes, esters, ketones, and aromatic compounds. The concentration and composition of VOCs changed significantly during the fermentation process. Esters and aldehydes were the predominant VOCs. The changes in organic acids levels were correlated with the production of specific VOCs, indicating complex interactions between organic acids and VOCs during the fermentation process. Employing correlation analysis and OPLS-DA (orthogonal partial least squares discriminant analysis), we identified 14 pivotal volatile organic compounds (VOCs) and organic acids that exert the most significant influence on the flavor profile of fermented salt-free bamboo shoots. This study provides invaluable insights for enhancing both the processing and economic potential of bamboo shoots.
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2026
·
IF 10.4
Xiaoqing Song,Xiaoye Wen,Yongfei Huang,Zhefeng Fan
Carbon dots nanozymes were synthesized from fresh garlic and ethylenediamine. • N-CDs showed excellent photo-responsive oxidase-like activity and blue fluorescence. • N-CDs with ethylenediamine doping show higher oxidase activity than undoped CDs. • A smartphone-assisted dual-mode sensing platform was used to detect TBHQ rapidly. Synthesis of highly active carbon dots nanozymes remains challenging. Using fresh garlic and ethylenediamine as precursors, nitrogen-doped carbon dots nanozymes (N-CDs) were fabricated in this study. The N-CDs exhibited light-responsive oxidase-like activity and blue fluorescence. For comparison, the carbon dots (CDs) without ethylenediamine doping demonstrated remarkable catalytic activity. Following doping with ethylenediamine, the maximum reaction rate and specific activity of N-CDs were approximately 1.4 times and 2 times those of CDs, respectively, indicating that nitrogen doping significantly enhanced the catalytic activity. Based on the catalytic performance and fluorescence properties of N-CDs, a dual-mode sensor was constructed for the detection of tert-butylhydroquinone (TBHQ), achieving detection limits of 0.19 μM and 0.05 μM for the colorimetric and fluorescence methods, respectively. Portable on-site detection of TBHQ in real samples was realized by integrating the sensing platform with a smartphone, providing a new strategy for the preparation of high-performance nanozymes. Download: Download high-res image (140KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2026
·
IF 4
Min Zhou,Rusen Miao,Xiaoxu Chen,Anqi Wang,Xueman Wei,Initizar Anwar,Yuefei Wang,Hongyan Wang,Fei Tian
A hydrophilic SUPRADES was constructed for selective extraction of isoflavone from P. lobata root. • The SUPRADES achieved 70.4 mg/g puerarin, 1.33–5.33-fold higher than conventional methods. • Selective extraction mechanism was elucidated by FT-IR, ¹H NMR, and DFT theoretical calculations. • The SUPRADES retains >97% extraction capacity over 7 cycles with superior batch reproducibility. • GAPI evaluation verifies the eco-sustainability of the entire isoflavone extraction process. Supramolecular deep eutectic solvents (SUPRADES) have are promising green extraction media for the sustainable extraction of bioactive compounds from plant materials. In this study, a combined strategy of SUPRADES with ultrasound-assisted extraction (UAE) was developed for the efficient extraction and enrichment of isoflavones from the root of Pueraria lobata. The extraction process was systematically optimized using single-factor experiments followed by Box–Behnken design (BBD) response surface methodology. The optimal SUPRADES system consisted of L‑proline and urea at a 1:2 molar ratio, supplemented with 5 wt% β‑cyclodextrin and 30 wt% water. Under these conditions, the yield of puerarin reached 70.4 ± 0.6 mg/g, which is 1.33‑ to 5.33‑fold higher than those obtained with conventional methods. The self‑assembled structure of the SUPRADES and its molecular‑level interaction mechanism with isoflavones were further elucidated by FT‑IR spectroscopy, ¹H NMR spectroscopy, and density functional theory (DFT) calculations. These results confirmed that the extraction process is synergistically driven by hydrogen bonding and β‑cyclodextrin‑mediated host–guest complexation. GAPI evaluation demonstrated the excellent environmental friendliness and sustainability of the established method. Collectively, this study provides a novel and efficient extraction strategy for isoflavones from Pueraria lobata root and offers a theoretical basis for green the extraction of natural products in traditional Chinese medicine. Download: Download high-res image (408KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
PubMed
高影响因子
AICHE JOURNAL
·
2026
·
IF 4.4
Aihemaiti Tuniyazi,Jing Li,Feng Li,Yi Zhang,Yating Yuan,Shuting Xi,Sheng Zhang,Shengping Wang
Electrocatalytic CO 2 reduction reaction (ECO 2 RR) faces limitations in conventional reactors due to high energy consumption, inefficient mass transport, and poor durability caused by ion-exchange membranes. Herein, we developed a membrane-free flow electrolyzer that dynamically decouples cathodic CO 2 -to-CO reduction from the anodic oxygen evolution reaction via a regenerative bromide cycle (Br − /BrO 3 − ). Operating at 216 mA cm −2 , the system achieves a record-low cell voltage of 1.85 V, maintains over 99% CO Faradaic efficiency, attains 32.9% single-pass CO 2 conversion, and reaches 71.9% energy efficiency (EE), with negligible degradation over 100 h of continuous operation. Operando spectroscopy reveals that local pH stabilization at 7.2 optimizes *CO/*H adsorption, thereby enhancing CO selectivity and EE. Techno-economic analysis shows a 60% lower power cost (111.8 vs. 277.79 $ ton −1 CO) vs. conventional systems. This work provides new insights into addressing persistent challenges in ECO 2 RR, including mass transfer limitations, carbonate formation, and anodic reaction mismatch.
✓ 已验证
产品关联
DOI
高影响因子
Catalysts
·
2026
·Vol. 16
·期 8
·689
·
IF 4.5
Zhongqiang Bao,Yiwei Zhang,Zhenhua Ji,Zhenguo Li,Peng Zhang,Ding Luo,Zhanming Chen,Han Gao,Lei Zhu,Hao Chen
Supported Pt catalysts are highly active for the selective catalytic oxidation of ammonia (NH3-SCO), but their practical use is limited by poor N2selectivity and insufficient hydrothermal durability under high-temperature exhaust conditions. Herein, we report a composition-regulated high-entropy oxide interface strategy to stabilize Pt–Cu dual sites and steer NH3oxidation toward selective N2formation. A series of fluorite-type Ce-based high-entropy oxides, including CeZrLaPrYOx, CeSmLaPrYOx, and CeSnLaPrYOx, were constructed as thermally robust supports for Pt and Cu loading. Among them, PtCu/HEO-Zr calcined at 1000 °C exhibits the best NH3-SCO performance, achieving 90% NH3conversion at 260 °C while maintaining N2selectivity above 80% over a broad temperature window of 100–300 °C under a high weight hourly space velocity of 100,000 mL·g−1·h−1. More importantly, after harsh hydrothermal aging at 800 °C with 10 vol% H2O for 12 h, the catalyst shows negligible activity loss and nearly unchanged N2selectivity, demonstrating exceptional structural and catalytic robustness. Structural and surface analyses reveal that Zr incorporation optimizes the fluorite high-entropy lattice, increases oxygen vacancy concentration, promotes lattice oxygen mobility, strengthens surface acidity, and enriches active Cu2+species, thereby enhancing the interfacial cooperation between NH3activation and oxygen-assisted intermediate conversion. In situ DRIFTS further reveals that PtCu/HEO-Zr favors an Olat-assisted internal selective catalytic reduction pathway, in which adsorbed NH3is activated to -NH2species and subsequently reacts with lattice oxygen-derived intermediates to form N2O22−-like species that decompose into N2and H2O. Meanwhile, the formation of nonselective NOxand N2O products is suppressed. This work highlights high-entropy oxide-supported Pt–Cu interfaces as a promising platform for designing hydrothermally durable and N2-selective NH3-SCO catalysts.
✓ 已验证
产品关联
DOI
高影响因子
Materials
·
2026
·Vol. 19
·期 15
·3188
·
IF 3.7
Tianqi Cao,Hongyu Cui,Junyi Liu,Chuanhui Zhang
HighlightsCitric acid-assisted sol–gel method is adopted to synthesize a series of lanthanide-doped Co3O4catalysts.Sm-Co3O4delivers the smallest potential gap and dominates the high-efficiency 4-electron ORR pathway.Sm doping triggers lattice distortion and abundant oxygen vacancies, elevating the Co2+/Co3+ratio to 0.59.Lanthanide ion doping can simultaneously tune electronic structure and lattice defects of spinel Co3O4to enhance oxygen electrocatalytic activity.A structure–activity relationship linking lattice defects, Co valence states and catalytic performance is established.The sluggish kinetics of the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) at air cathodes severely restrict the practical application of rechargeable zinc–air batteries (ZABs). Herein, equimolar lanthanide-doped spinel Co3O4bifunctional electrocatalysts were synthesized via a citric acid-assisted sol–gel method. Among Ce-, Pr-, La-, and Sm-doped catalysts, Sm-Co3O4exhibits the optimal electrocatalytic performance with a high ORR half-wave potential of 0.72 V and superior OER activity with an overpotential of 1.65 V at 10 mA cm−2, achieving a minimal potential gap ΔE of 0.93 V. Rotating ring-disk electrode (RRDE) measurements and Koutecky–Levich (K–L) analyses confirm the exclusive 4e−ORR pathway. Characterizations reveal that Sm doping modulates the electronic structure and lattice distortion of Co3O4, raises the Co2+/Co3+ratio (0.59) and creates abundant oxygen vacancies, thereby significantly lowering the overpotentials for both ORR and OER. This study provides new insights for designing high-performance spinel-based bifunctional electrocatalysts for ZABs.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2026
·Vol. 14
·期 29
·13042-13055
·
IF 7.6
Lau Chun-Yin,Li Xinwei,Zhang Yanlin,Rangarajan Goutham,Tse Ho-Yin,Zhuang Huichuan,Leu Shao-Yuan,Farnood Ramin R.
In this study, an amorphous carbon-rich carbon nitride photocatalyst was prepared by nitric acid treatment of pyrolyzed melamine followed by nitrogen annealing. The resulting semiconductor material exhibited an up-shifted valence band that enhances the oxidizing power of photogenerated holes, enabling selective C α −C β bond cleavage of 2-phenoxy-1-phenylethanol (2-POE). Using 1.5 g L −1 of the optimized photocatalyst in acetonitrile, 2-POE underwent first-order conversion with a reaction rate of 2.55 h −1 under a 9 W blue LED light source. Product analysis showed the formation of benzaldehyde as the major product, confirming C−C bond scission with 93.1% selectivity. In addition, ring-opening reactions were observed, producing fumaric and maleic acids as the by-products. Photocatalytic depolymerization of organosolv lignin further demonstrated ring opening of the β-O-4 linking motifs, forming dicarboxylic acids analogous to those generated from 2-POE. These demonstrate a metal-free photocatalytic platform capable of promoting β-O-4 bond cleavage in lignin model compounds and inducing photocatalytic structural modification of organosolv lignin, accompanied by the formation of low-molecular-weight aliphatic dicarboxylic acids.
✓ 已验证
产品关联
DOI
高影响因子
Innovative Food Science & Emerging Technologies
·
2026
·
IF 6.9
Zhaoyu Wang,Weiliang Hua,Yihua Zhou,Liang Pan,Yanhong Bi,Guangfu Song
The molecular basis of deep eutectic solvent (DES)-mediated extraction of arbutin was investigated using a computational chemistry method for the first time to uncover the impressionable chemical functionality of DESs. The hydrogen-bonding interactions among hydrogen bond acceptors, hydrogen bond donors, and arbutin were investigated based on density functional theory, through electrostatic potential (ESP) distribution, molecular polarity index (MPI), independent gradient model based on Hirshfeld partition (IGMH), and atoms-in-molecules (AIM) analyses. ChCl/LA (1:3) exhibited superior extraction efficiency for arbutin among the examined DESs. The ESP distribution matching study revealed that CA, LA, Gly, and PG displayed a higher overall charge distribution compatibility with ChCl than UR. In the DES–arbutin systems, ChCl/LA (1:3) showed its strongest and most stable binding characteristic with arbutin, as evidenced by the optimal electrostatic matching and the highest MPI value with arbutin. IGMH analysis indicated that both the hydroxyl and carboxyl groups in LA endowed a stronger hydrogen-bonding interaction between arbutin and ChCl/LA compared to that between arbutin and ChCl/Gly and ChCl/UR. This was further supported by the fact that the absolute value of the interaction energy of ChCl/LA (1:3) (−30.33 kcal/mol) was higher than those of other DESs (−15.86 to −26.26 kcal/mol). Moreover, AIM analysis revealed that the highest bond critical point (BCP) electron density of ChCl/LA (1:3)–arbutin was at BCP 236 (O 1 ···H 34 O) = 0.0488 a.u., corresponding to a hydrogen bond energy of −10.1534 kcal/mol, indicating the strongest hydrogen bond interaction. These findings provide a novel molecular-scale rationale for designing effective DESs for natural-product extraction.
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·Vol. 65
·期 27
·14368-14379
·
IF 3.9
Fan Zhiqiang,Chen Zhaohui,Li Li
To enhance the application potential
and added value of an independently
developed self-lubricating poly(vinyl alcohol) (PVA) interventional
microcatheter, a novel strategy for in situ formation of acrylamide/sodium
alginate (AM/SA) hydrogel coating on the surface of the PVA microcatheter
via UV light initiation was proposed. And the comprehensive effects
of key parameters including composition, light intensity, irradiation
time, and photoinitiator concentration on drug loading, release profile,
adhesion, and lubricity of the coating were systematically studied.
By adjusting the UV light intensity (20–50%), exposure time
(3–20 min), and initiator concentration (0.125–1%),
the thickness of the hydrogel coating could be controlled in the range
of 13.4 to 791 μm, significantly improving the drug loading
and release capacity of the microcatheter, from 283.45 μg/g
of pure PVA to 2070.11 μg/g, and the cumulative release within
24 h could reach 80.13%. The hydrogel coating also exhibited excellent
interface stability, achieving high adhesion energy of 201 J/m 2 at the photoinitiator concentration of 0.5%. With moderate
SA content, e.g., 5%, the surface friction coefficient of the catheter
was significantly reduced to 0.04, representing a reduction of ∼21%
compared to pure PAM coating and also better than that of pure PVA
(0.0596). This AM/SA hydrogel coating integrated the triple functionality
of drug loading, controlled drug release, and surface lubrication,
markedly enhanced the multifunctional integration and application
value of PVA catheter, and would provide a new strategy for developing
high-performance interventional medical devices used in the field
of short-term nonvascular luminal interventional procedures.
✓ 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）