RSC Advances
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2026
·Vol. 16
·期 26
·23314-23325
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IF 6.1
Xiaodong Zhou,Fengqin Guo,Ziqiang Han,Jiajun Zhang,Yan Cao,Huiquan Li,Guozhu Chen,Liguo Wang
The selective hydrogenolysis of furfuryl alcohol (FFA) to 1,2-pentanediol (1,2-PeD) represents a promising route for biomass valorization, yet it remains challenging due to the competing over-hydrogenation of the furan ring and the recalcitrant C5–O bond cleavage. Herein, we report a highly efficient bimetallic Pt–Y catalyst supported on a MgO–AlO(OH) mixed oxide (MAO) that enables the selective hydrogenolysis of FFA to 1,2-PeD under remarkably mild conditions (140 °C, 0.8 MPa H2). Structural characterizations (AC-HAADF-STEM, XPS) confirm the formation of Pt–Y mixed clusters, which induce electron transfer from Pt to Y. This electronic modulation, combined with the tailored basicity of the MAO support, effectively suppresses the over-hydrogenation pathway while promoting the activation of the target C–O bond. In situ Fourier transform infrared spectroscopy shows that after the introduction of Y, FFA adsorbs on the catalyst surface in a vertical adsorption configuration through its O–H and C–O–C bonds, promoting the selective ring-opening. Consequently, the optimized 0.75Pt0.45Y/MAO catalyst achieves complete FFA conversion with an exceptional 1,2-PeD selectivity of 80.3% (110 mol 1,2-PeD·mol Pt per h), significantly outperforming its monometallic counterparts. Furthermore, the catalyst demonstrates outstanding stability in a continuous-flow reactor for over 200 hours without obvious deactivation. This work provides a strategy for designing synergistic bimetallic catalysts for the sustainable production of 1,2-PeD under mild conditions.
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高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Zhiyong Yang,Guofang Zhang,Ruiqin Zhang,Lu Bai,Shilong Sun,Yiming Li,Zhuocheng Liu,Feng Hu,Jianyi Xu,Ruihua Guo,Yanghuan Zhang
The BaCe 0.98 M 0.02 O 3 (M = Ce, Y, Li, Mn, Ni) solid solution was successfully synthesized via a combustion method. The microstructure and spectra characteristics were analyzed systemically. The X-ray diffraction (XRD) results showed that the structures of the BaCeO 3 -based materials kept cubic perovskite single-phase structure. The findings from the Scanning Electron Microscopy (SEM) and Energy Dispersive Spectroscopy (EDS) analyses revealed that the doped samples exhibited smaller grain sizes and the doped elements are distributed uniformly. The spectral analyses revealed that the doped samples contain higher contents of oxygen vacancies in the lattices. The electrochemical hydrogen storage characteristics of the samples demonstrated that the doped samples possess greater discharge capacities compared to pure BaCeO 3 . The Y-doped sample demonstrated superior electrochemical performance, delivering a remarkable specific capacity of 377 mA h/g (hydrogen content of 4.56 %) with excellent capacity retention of 371 mA h/g after 50 cycles. Moreover, the incorporation of Y ions not only significantly enhanced the rate capability but also effectively suppressed the self-discharge behavior. The hydrogen storage mechanism was speculated. The characteristics of hydrogen storage are significantly influenced by the lattice parameters, the concentration of oxygen vacancies and defects, as well as the nature of the doped ions.
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Yanli Wang,Can Liu,Xinyue Jiang,Yufei Cheng,Jie Wang,Lingxu Yang,Huijun Liu,Chaoliu Zeng
Coatings deposited via the disproportionation reaction of multivalent transition-metal ions in molten salts offer advantages of simple apparatus, straightforward processing, and the formation of metallurgically bonded interfaces with the substrate. In this study, high-quality niobium carbide and nitride coatings were fabricated for proton exchange membrane fuel cell (PEMFC) bipolar plates via disproportionation of Nb(IV) in molten salts. The effect of fluoride ions in the molten salt medium on the composition, microstructure, and properties of coatings deposited on austenitic stainless steel substrates was investigated. Results show that the addition of fluoride ions to NaCl-KCl molten salt effectively modulates the disproportionation rate of Nb(IV), enabling the formation of uniform and dense Nb x (C,N) y coatings on 304 SS. This regulation prevents excessive disproportionation of Nb(IV) and the consequent accumulation of niobium particles, which would otherwise accelerate the corrosion of the coating under galvanic conditions. Regular electrochemical tests demonstrated that the Nb x (C,N) y coating significantly improved the corrosion resistance of 304 SS. Moreover, even under an elevated potential of 1.0–1.6 V vs. SHE, the corrosion current density stayed below the target set of United States Department of Energy (1 μA·cm −2 ), without significant fluctuations. This demonstrates that the coating possesses outstanding chemical stability and long-term corrosion resistance.
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JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2021
·
IF 5.302
He Junjie,He Guo,Liu Jing,Tao Jingchao
High-entropy ceramics exhibit great application potential as thermal barrier coating (TBC) materials. Herein, a series of novel high-entropy ceramics with RE 2 (Ce 0.2 Zr 0.2 Hf 0.2 Sn 0.2 Ti 0.2 ) 2 O 7 (RE 2 HE 2 O 7 , RE = Y, Ho, Er, or Yb) compositions were fabricated via a solid-state reaction. X-ray diffraction (XRD) and energy dispersive spectrometry (EDS) mapping analyses confirmed that RE 2 HE 2 O 7 formed a single defect fluorite structure with uniform elemental distribution. The thermophysical properties of the RE 2 HE 2 O 7 ceramics were investigated systematically. The results show that RE 2 HE 2 O 7 ceramics have excellent high-temperature phase stability, high thermal expansion coefficients (10.3–11.7 × 10 −6 K -1 , 1200 ℃), and low thermal conductivities (1.10-1.37 W m -1 K -1 , 25 ℃). In addition, RE 2 HE 2 O 7 ceramics have a high Vickers hardness (13.7–15.0 GPa) and relatively low fracture toughness (1.14-1.27 MPa m 0.5 ). The outstanding properties of the RE 2 HE 2 O 7 ceramics indicate that they could be candidates for the next generation of TBC materials.
研究领域:
材料科学
·
陶瓷
·
热工工程
·
高温材料
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ANALYTICAL LETTERS
·
2025
·
IF 1.8
Yongsheng Chang,Xiane Guo,Xiuzhen Ge,Xuexi Yu,Shujun Ma,Canyu Liu,Yunwei Lou,Tingmin Chang,Yun Zhang
Traditional immunoassays for Staphylococcus aureus (S. aureus) suffer from significant limitations, particularly owing to cross-reactivity with protein G-producing Streptococcus species. To address this issue, here is reported an innovative colorimetric strategy that depended on the unique binding characteristics of guinea pig immunoglobulin G (IgG) toward staphylococcal protein A (SPA), a highly expressed epitope on S. aureus. Unlike conventional monoclonal or polyclonal antibodies, guinea pig IgG exhibits high specificity for SPA, while demonstrating negligible affinity for protein G. The method also integrated horseradish peroxidase (HRP)-conjugated chicken anti-protein A immunoglobulin Y (IgY) (HRP–IgY) in a sandwich immunoassay format, enabling the catalytic oxidation of 3, 3′, 5, 5′-tetramethylbenzidine (TMB) and hydrogen peroxide. The signal intensity correlated linearly with S. aureus concentration over a dynamic range of 7.8 × 102 CFU/mL–1.0 × 105 CFU/mL, achieving a detection limit of 6.9 × 102 CFU/mL. Notably, the assay demonstrated exceptional specificity, with no cross-reactivity with other common foodborne pathogens. Compared with mainstream methods, this assay completed the entire analytical process within 90 min-shorter than polymerase chain reaction (PCR) and traditional enzyme-linked immunosorbent assay (ELISA). It eliminated the need for complex DNA extraction or strict anti-cross-contamination controls and maintained stable performance in real samples. This advantage outperforms PCR (often susceptible to matrix inhibitors) and ELISA (typically exhibits reduced sensitivity in complex matrices). By offering significant improvements over conventional techniques, this strategy holds great promise for enhancing the efficiency and reliability of S. aureus detection in practical applications.
研究领域:
免疫学
·
生物传感器
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食品安全
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微生物学
·
分析化学
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INORGANIC CHEMISTRY
·
2020
·
IF 4.825
Peipei Dang,Dongjie Liu,Yi Wei,Guogang Li,Hongzhou Lian,Mengmeng Shang,Jun Lin
Phosphor-converted white-light-emitting diodes (pc-WLEDs) rely on combining a near-ultraviolet (n-UV) or blue chip with trichromatic and yellow-emitting phosphors. It is challenging to discover cyan-green-emitting (480–520 nm) phosphors for compensating the spectral gap and producing full-spectrum white light. In this work, we successfully discovered two unprecedented bright cyan-green emitting Rb3RV2O8 (R = Y, Lu) phosphors that gives emission bands centered at 500 nm upon 362 nm n-UV light excitation. Interestingly, the both self-activated compounds exhibit high internal quantum efficiencies (IQEs) of 71% for Rb3YV2O8 and 85% for Rb3LuV2O8, respectively. Moreover, controllable emission color can be successfully tuned from cyan-green to orange-red across the warm white light region by design strategy of VO43– → Eu3+ energy transfer. The thermal quenching of as-prepared phosphors could be effectively mitigated by this design strategy. Finally, the as-fabricated n-UV (λex = 370 nm) pumped phosphor-converted (pc) W-LED devices utilizing Rb3RV2O8 (R = Y, Lu) along with commercial phosphors demonstrate well-distributed warm white light with high color-rendering index (CRI) of 91.9 and 93.5, and a low correlated color temperature (CCT) of 5095 and 4946 K. It suggests that the both vanadate phosphors have potential applications in full-spectrum pc-WLEDs.
研究领域:
材料科学
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光电子学
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固态照明
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无机化学
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光子学
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CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Xiaodong Wei,Yulong An,Zhenyu Bu,Huidi Zhou,Jianmin Chen
Rare-earth (RE) oxide-doped La 2 (Zr 0.7 Ce 0.3 ) 2 O 7 (LZC) has attracted great interest in thermal barrier coatings (TBCs) because of its lower thermal conductivity . However, studies on the laws governing the effect of different types of RE oxide doping on the performance of LZC ceramics are limited. Therefore, in this study, different types of RE (Sc, Y, Gd and Eu) doped LZC ceramic bulks have been prepared using solid phase reaction method. The effects of RE doping on the crystal structure, mechanical properties and thermal properties of the LZC ceramics were investigated. The results indicated that all five ceramics exhibited a single pyrochlore phase structure, whereas their lattice constants were reduced after doping, with (La 0.85 Sc 0.15 ) 2 (Zr 0.7 Ce 0.3 ) 2 O 7 having the lowest lattice constant. The effect of rare earth doping on the grain growth of LZC was not evident; however, it could significantly improve the hardness of LZC. In addition, doping with all four RE ions significantly reduced the thermal conductivity of the LZC ceramics, and the most significant reduction was observed for Gd 3+ doping.
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OPTICAL MATERIALS
·
2023
·
IF 3.9
Xiaoyan Zhao,Yongcheng Zhou,Hua Guo,Yuqi Zhai,Xianrui Zou,Donghui Wang
Titanium dioxide (TiO 2 ) has received widespread attention as high stability, low toxicity and costless photocatalyst , but it only exhibits photocatalytic activity under ultraviolet (UV) light. To improve TiO 2 photocatalytic efficiency, Bio-CaCO 3 /WO 3 /TiO 2 /(Ca,Y)F 2 :Tm,Yb was prepared. TiO 2 was combined with upconversion materials, coupled with WO 3 and loaded on oyster shell powder (Bio-CaCO 3 ), which showed that the prepared photocatalyst effectively reduce the band gap of TiO 2 , expand the photoreaction range of the material and avoid agglomeration, thus improving its photocatalytic efficiency and antibacterial efficiency. The photocatalytic degradation efficiency of Bio-CaCO 3 /WO 3 /TiO 2 /(Ca,Y)F 2 :Tm,Yb (50 mg) was 24.32% higher than that of TiO 2 /(Ca,Y)F 2 :Tm,Yb in 90 min. And its antibacterial rates against Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ) were enhanced by 38.68% and 25.89% compared to TiO 2 /(Ca,Y)F 2 :Tm,Yb, respectively.
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ACS Omega
·
2021
·
IF 3.512
Xiutao Li,Feng Zhang,Mengjie Zhang,Xiaomeng Zhou,Haijun Zhang
In this work, a series of rare earth-based metal–organic frameworks (RE-MOFs) with the same organic ligand were synthesized and studied as flame retardants on epoxy. Through thermogravimetric analysis, limiting oxide index, UL-94, and cone calorimeter tests, a Y-based MOF (Y-MOF) showed the best flame retardancy compared with a La-based MOF (La-MOF) and Ce-based MOF (Ce-MOF). Further research with Raman, X-ray photoelectron spectroscopy, and theoretical calculation revealed that the reasons for the different flame retardance performances of RE-MOFs resulted from the catalytic carbonizing abilities and the radical-trapping abilities of La, Ce, and Y.
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PubMed
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CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Qiuyan Ding,Hengyu Shen,Zongliang Kou,Hong Li,Xiaolei Fan,Xiaoxia Ou,Yilai Jiao,Xin Gao
Rational design of catalytic packing is crucial in developing reactive distillation (RD) processes as efficient in-situ coupling of reaction and separation is required. Structured catalytic packings are advantageous than the conventional packings (e.g., inert packing + catalyst ‘tea bags’), due to the integration of the catalysis and separation function in one unit, mitigating mass/heat transfer limits. Herein, we present one of the latest developments in the field of structured catalytic packings, which was applied to a pilot-scale RD process of ethyl lactate (EL) synthesis via acid-catalyzed esterification and showed the advantages. The tungstophosphoric acid and hierarchical Y zeolite were uniformly decorated on corrugated silicon carbide (SiC) foam sheets via new preparation method (of ultrasound-assisted impregnation and microwave-assisted drying). The activity of the resulting materials was first assessed in a batch reactor, then the best candidate was employed by the pilot process. Findings from the pilot-scale RD experiments show that the developed structured SiC foam catalytic packing (SSFCP) exhibited an excellent performance (with the normalized conversion of 0.155 mol/g catalyst ), outperforming the conventional seepage catalytic packing internal (0.002 mol/g catalyst ). The influence of various variables (including molar feed ratio, feed position and reflux ratio) on the process performance of the pilot RD rig was also investigated and optimized, achieving a lactic acid conversion of 46.9 % and EL purity of 44.9 % (bottom). The good performance was attributed to the improved mass transfer thanks to SiC foam corrugated sheet (which encourage the vortex formation), thereby enabling more efficient coupling with the reaction. The SSFCP demonstrated reasonable stability, making it a promising candidate for relevant practical RD applications.
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JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2021
·
IF 5.302
Yongchang Guo,Ying Zhang,Mathieu Allix,Shaowei Feng,Hong Sun,Cécile Genevois,Emmanuel Véron,Jianqiang Li
Pyrochlore-based glass-ceramics are attracting attention as a promising host material for immobilizing minor actinide in high-level wastes. However, the loading capacity of pyrochlore-based materials for actinide elements is to be improved, and only conventional synthetic approaches of powder sintering and glassy bulk crystallization were reported. Here, new (La,Y) 2 (Zr,Ti) 2 O 7 pyrochlore-based glass-ceramics were subtly designed and successfully prepared through a rapid melting and solidification process. The solidification behavior of samples with different cooling rates was investigated, the dense and crack-free (La,Y) 2 (Zr,Ti) 2 O 7 pyrochlore-based glass-ceramics were prepared at the cooling rate of 500 °C/s (within 1.5 s). The present amorphous La 2 O 3 -TiO 2 -Al 2 O 3 phase demonstrates the outstanding thermal stability compared with the currently used borosilicate glass for high-level waste immobilization due to the lack of conventional glass-forming components. The results show the great feasibility of this novel synthesis route for glass-ceramics by direct solidification and its good potential for immobilizing high-level wastes.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2018
·
IF 3.779
Rongzhi Gu,Mengyuan Guan,Na Jiang,Tianyu Yuan,Guoquan Ma,Chao Wang,Zhiping Yang,Panlai Li,Zhijun Wang
Series of Ca 9- w Ce 0.5 Y 0.5- x - y - z (PO 4 ) 7 : x Tb 3+ , y Eu 3+ , z Sm 3+ , w Mn 2+ phosphors are synthesized by a high temperature solid state method. The spectral property and fluorescence decay curves are measured and used to demonstrate the energy transfer effect in Ce 3+ -Tb 3+ , Ce 3+ -Sm 3+ , Ce 3+ -Eu 3+ , Tb 3+ -Sm 3+ , Tb 3+ -Eu 3+ and Tb 3+ -Mn 2+ . For Ca 9 Ce 0.5 Y 0.5 (PO 4 ) 7 , the concentration of Ce 3+ is higher and it can act as activator and sensitizer simultaneously. Ce 3+ and Tb 3+ can emit blue and green light under near ultraviolet excitation, respectively. Sm 3+ , Eu 3+ and Mn 2+ can produce red emission. In order to generate white light, Ce 3+ /Tb 3+ /Sm 3+ , Ce 3+ /Tb 3+ /Eu 3+ and Ce 3+ /Tb 3+ /Mn 2+ doped phosphors are investigated, and Ca 8.8 Ce 0.5 Y 0.33 (PO 4 ) 7 :0.17Tb 3+ ,0.20Mn 2+ can create high quality white light. Its color rendering index can be high up to 80.2 and correlated color temperature is 4735 K, and its thermal stability is high. The result indicates that the acquired phosphors can be potential for the use of ultraviolet excited white light emitting diodes .
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