CERAMICS INTERNATIONAL
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2026
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IF 5.6
Jianjun Zeng,Kuibao Zhang,Xi Zhang,Shengquan Yu
Water bath temperature plays a critical role in regulating the crystallization and growth kinetics during the co-precipitation process. In this work, MgAl 2 O 4 precursors were synthesized via co-precipitation route under gradient water bath temperatures, and the resulting transparent MgAl 2 O 4 ceramics were fabricated by hot isostatic pressing (HIP). The results indicate that lower water bath temperatures promote the formation of low-crystallinity granular precursors, whereas higher temperatures facilitate crystal growth and lead to rod-like precursors with higher crystallinity. The morphology of the calcined powders closely reflected that of the corresponding precursors. The HIP process eliminated the vast majority of pores, producing transparent ceramics. Subsequent annealing in air further improved the transmittance. Notably, the sample prepared at 30 °C exhibited high transmittance in the visible region and low defect density.
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Tourism and Hospitality Research
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2016
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IF 0
Peter Wiltshier,Alan Clarke
This paper examines antecedents to the successful use of Virtual Cultural Tourism and the ways in which virtual realities can add value to Cultural Tourism offers. Success can be seen to derive from the deeper understanding of consumers’ preferences and motivations to engage with Virtual Cultural Tourism. It is also necessary to see these initiatives from the perspective of multiple stakeholders: the armchair traveller, the frequent flyer and the service provider at destinations. The latter include public sector providers such as park site managers, museum curators, interpretation and information services for tourism as well as the private sector developers.
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ADVANCED FUNCTIONAL MATERIALS
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2026
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IF 19.9
Liangwei Hu,Wenhao Xie,Han Tang,Xiaolong Sun,Muyang Huang,Xiaolu Zhu,Yineng Gou,Weishuai Wang,Yun Zheng,Yue Hou,Guoqiang Wu,Ady Suwardi,Ziyu Wang
Decoupling electronic and phononic transport requires nanoscale control over scattering landscapes. Here, we show that direct ink writing generates a hierarchical nanoarchitecture in Bi 2 Te 3 , which comprises nanopores (10-150 nm), amorphous-crystalline nanointerfaces, and dense grain boundary networks that suppress lattice thermal conductivity by around 50% from ∼0.6 W m −1 K −1 to ∼0.3 W m −1 K −1 , as quantitatively confirmed by Debye-Callaway modeling. Sb/Te/Se co-enrichment (Sb/Te co-enrichment was applied to the p -type BST system, while Te/Se co-enrichment was applied to the n -type BTS system) refines this nanopore distribution while driving atomic-scale intercalation of Sb/Te enrichment between quintuple layers, as directly visualized by atomic-resolution STEM-EDS, bridging van der Waals gaps to selectively restore electrical conductivity without compromising phonon scattering. The optimized p -type and n -type materials achieve peak ZT values of 0.87 (303 K) and 0.89 (423 K), respectively, which exceed commercial Bi 2 Te 3 performance. Single-leg generators deliver conversion efficiencies of 3.51% and 2.53%, ranking among the highest for additively manufactured thermoelectrics. This work demonstrates that process-generated nanoarchitectures, combined with atomic-scale compositional engineering, enable effective phonon–electron decoupling in printed thermoelectric materials.
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CERAMICS INTERNATIONAL
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2026
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IF 6
Ying Li,He Li,Guangjun Yang,Xiwei Qi
A series of La 2 O 3 -Ga 2 O 3 -0.08Eu 2 O 3 - x Dy 2 O 3 amorphous samples ( x = 0–0.14, interval of 0.01) were synthesized via containerless solidification. XRD results demonstrated that the prepared materials possessed an amorphous structure with a broad diffraction hump instead of sharp crystalline peaks. Differential thermal analysis (DTA) revealed that Dy 2 O 3 doping barely altered the glass transition temperature ( T g ) but significantly increased thermal stability and crystallization characteristic temperature ( T x ) and thermal stability parameter Δ T ( T x - T g ), with the maximum Δ T reaching ∼96 °C at x = 0.09. Concentration quenching of Dy 3+ was dominated by multipolar interaction, confirmed by a critical distance ( R c ) of 18.98 Å and Dexter theory analysis. The optical band gap ( E opt ) remained ∼3.72 eV at x ≤ 0.06 and decreased to ∼3.42 eV at x = 0.11. CIE standard 1931 chromaticity coordinate values together with correlated color temperature (CCT) were tunable, with emission color evolving from warm reddish-orange to orange-yellow (CCT: 2250–3240 K). The excellent thermal stability, tunable PL, and tunable CCT render these amorphous materials promising candidates for solid-state luminescent devices.
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Nature Communications
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2026
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IF 18.1
Li Xiancheng,Xia Yuangu,Ma Yanchao,Liu Jiaxuan,Ma Yue,Wang Shuizhong,Lu Qiang,Song Guoyong
C-lignin, a natural biopolymer of caffeyl alcohol subunits linked by benzodioxane motifs, is an ideal feedstock for direct catechol production. However, its hydrogenolysis is hindered by the high bond dissociation energies and steric congestion of vicinal C–O bonds in benzodioxane structures. Here, we report a low-loaded Co–Zn dual single-atom catalyst (Co SA –Zn SA @NC) that enables efficient C-lignin hydrogenolysis, achieving 84.6% catechol yield, 82% selectivity toward 4-propylcatechol, and a turnover number five times higher than precious Ru/C, attributing to the synergistic effect of the dual atomic sites. The major product, 4-propylcatechol, can be readily purified and upgraded into diverse value-added molecules. Mechanistic investigations reveal that the Zn and Co species, acting as the directing and active centers, respectively, synergistically drive the quasi-concerted cleavage of the vicinal C–O bonds. This work presents an atomically dispersed non-precious metal catalyst for C-lignin hydrogenolysis, providing a sustainable route to well-defined aromatics.
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INORGANIC CHEMISTRY
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2026
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IF 4.6
Guirong Duan,Jie Jiang,Yanqing Jiao,Jiaqi Wang,Xi Zhao,Ganceng Yang,Haijing Yan,Honggang Fu
Developing low-cost, corrosion-resistant catalytic electrodes for the oxygen evolution reaction (OER) is essential for efficient and durable hydrogen production via anion exchange membrane water electrolysis (AEMWE). Herein, we report a polydopamine (PDA)-coated Fe,Cr codoped NiS2 self-supporting electrode (PDA-Fe,Cr-NiS2@NF). The nitrogen-rich functional groups of PDA establish robust M-N coordination bonds with active metal centers, thereby suppressing metal dissolution during anodic reconstruction. In parallel, the conductive PDA layer regulates interfacial electron redistribution and optimizes the hydrogen-bond network of interfacial water, lowering the OER activation energy. Its conformal protective layer further enhances catalyst stability. The optimized electrode delivers an OER overpotential of only 247 mV at 1 A cm–2. When integrated as the anode with a PtNiC cathode in an AEMWE cell, the system reaches a current density of 1 A cm–2 at only 1.737 V at 70 °C and operates stably for 1000 h, with a voltage decay rate of only 0.1 mV h–1, an electrolysis efficiency of 71.96%, and an energy consumption of 4.157 kWh Nm3– H2. This work establishes a viable coordination-protection strategy for constructing durable, high-performance OER electrodes for industrial-scale water electrolysis.
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APPLIED SOIL ECOLOGY
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2026
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IF 5.6
Meng Zhou,Yanfei Wei,Wei Zhang,Chi Zhang,Xiangwu Yao,Baolan Hu
Arsenic (As) and polycyclic aromatic hydrocarbons (PAHs) frequently co-occur in industrial soils and act as persistent stressors that reshape soil ecological processes. However, it remains unclear how long-term As–PAH co-contamination influences pollutant redistribution, microbial community organization, and microbial functional allocation under chronic stress. In this study, gravity-driven soil column systems were established to simulate PAH contamination (30 mg/kg) with different As levels (0, 300, and 600 mg/kg) and operated continuously for 270 days. Long-term co-contamination altered the soil-profile redistribution of both PAHs and As. Compared with the PAHs-only treatment, co-contaminated treatments showed greater retention of PAHs in deeper soil layers (>30 cm), while As underwent pronounced vertical redistribution and a progressive shift toward As(V)-dominated profiles during prolonged incubation. Microbial community analysis showed that co-contamination reduced microbial abundance, strengthened deterministic community assembly, and increased network size, connectivity, clustering, and robustness. The dominant genus shifted from Micrococcaceae _unclassified in the PAHs-only treatment to Rhodococcus in the co-contaminated treatments, indicating selection toward more stress-tolerant and contaminant-responsive taxa. Metagenomic analysis further showed coordinated enrichment of stress-response genes, As metabolism genes, and PAH degradation genes, especially under high As loading. These results indicate that long-term As–PAH co-contamination acts as a profile-scale ecological filter that reshapes soil microbial communities and redirects microbial functional allocation toward stress tolerance, detoxification, and contaminant-associated metabolism.
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AICHE JOURNAL
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2026
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IF 4.4
Yajie Yu,Haiyi Chen,Kaiji Xu,Jinxin He,Bin Chen,Kok Bing Tan,Dongren Cai,Guowu Zhan
Conventional supported Cu catalysts for the reverse water-gas shift (RWGS) reaction suffer from activity-selectivity trade-offs and stability issues. Herein, we report a carrier-free Cu catalyst (bio-Cu) synthesized via a pollen-templated strategy. The template creates a hierarchical porous framework and enables in situ carbon doping (~4 wt%), ensuring homogeneous Cu dispersion and inhibiting agglomeration. In the RWGS reaction, the bio-Cu catalyst exhibits outstanding performance, achieving >99.1% CO selectivity with 25.3% CO 2 conversion at 340°C and 3 MPa, approximately 3.2 times higher than a conventional Cu benchmark. Under ambient pressure at 450°C, it maintains 30.5% conversion with 99.99% CO selectivity and shows exceptional stability over 100 h. Mechanistic studies reveal that carbon doping generates electron-deficient Cu δ+ species and promotes a synergistic carbon cycle that operates alongside the conventional redox pathway, collectively enhancing the catalytic efficiency. This work provides new insights into the rational design of high-performance, carrier-free CO 2 hydrogenation catalysts.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Hengji He,Dainan Zhang,Youbin Zheng,Shuyang Ma,Cheng Liu,Qinghui Yang,Huaiwu Zhang
Li/Te co-doped CaWO 4 ceramics with Li:Te molar ratios of 1:0.5, 1:0.75 and 1:1 was prepared to examine composition- and processing-dependent structural evolution and microwave dielectric properties. The Li:Te = 1:1 series was optimized at 890 °C, whereas the Li:Te = 1:0.5 and 1:0.75 series were optimized at 910 °C. XRD and Rietveld refinement, Raman spectroscopy, EPR, XPS, GCIB depth-profile XPS, ICP-OES and electron microscopy were used to correlate phase assemblage, local bonding, chemical-state signals, retained Li, microstructure and dielectric response. Under the respective optimized conditions, the Li:Te = 1:0.75, x = 0.04 ceramic exhibited the highest Q× f value of 89,613 GHz, while the Li:Te = 1:1, x = 0.04 ceramic showed the least negative τf value of −32.06 ppm/°C. GCIB depth-profile XPS revealed composition-dependent depth evolution of the relative Te 4 + - and Te 6+ -related signals, and ICP-OES confirmed systematic differences in total retained Li. In the Li:Te = 1:1 series, electron microscopy identified a Te/O-enriched amorphous interfacial region. Together, these results show that the Li:Te ratio and sintering condition jointly influence local structure, densification behaviour and microwave dielectric properties. The work provides a basis for optimizing the balance between low dielectric loss and temperature stability in CaWO 4 -based ceramics. Furthermore, a preliminary Ag co-firing test further indicates chemical compatibility under the tested condition.
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LWT-FOOD SCIENCE AND TECHNOLOGY
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2026
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IF 7.1
Binbin Li,Haizhi Tian,Ningning Shen,Longquan Xiao,Jing Li,Lin Zhou,Zhengnan Ren,Xinhui Wang
Synergistic co-fermentation enhanced antioxidant capacity of C. aurantium juice. • Co-fermentation increased β-glucosidase activity and flavonoid accumulation. • Probiotic co-fermentation reshaped aroma profiles and volatile composition. • Co-fermentation promoted volatile and non-volatile metabolic remodeling. • Co-fermentation enriched flavone and flavonol biosynthesis pathway. Citrus aurantium L. ( Citrus aurantium ) is rich in flavonoids and bioactive phytochemicals, but its industrial utilization is limited by suboptimal flavor quality and instability during processing. Herein, monoculture fermentation using Lactiplantibacillus plantarum (a lactic acid bacterium) or Bifidobacterium animalis subsp. lactis (a lactic acid bacterium), together with their synergistic co-fermentation, was employed to investigate flavor and functional modifications in C. aurantium juice. Compared with monoculture fermentation, co-fermentation increased total flavonoid and phenolic contents by 23.7-50.4% and 43.6-65.0%, respectively, while β-glucosidase activity, ABTS and DPPH radical-scavenging activities increased by 10.9-27.3%, 12.6-24.4%, and 12.7-26.4%, respectively. Electronic-nose and headspace solid-phase microextraction-gas chromatography-mass spectrometry analyses revealed that co-fermentation generated a distinct volatile profile characterized by enrichment of aroma-related compounds and altered representation of compounds associated with earthy and camphor-like notes. Untargeted metabolomics revealed extensive remodeling of phenolic, amino acid, and lipid metabolism. The relative abundance of limonin showed a marginal, non-significant decrease of 3.9%, while indoline and L-tyrosine increased by 3.9% and 3.8%, respectively ( p < 0.001). These changes were accompanied by significant enrichment of the flavone and flavonol biosynthesis pathway ( p = 0.0082). Correlation analysis further revealed strong associations between key differential metabolites and functional indicators. Collectively, these findings demonstrate that synergistic probiotic co-fermentation drives metabolic remodeling and flavonoid biotransformation in C. aurantium juice, providing a promising strategy for developing high-value functional citrus beverages. Future studies should further evaluate sensory acceptability, storage stability and industrial feasibility to facilitate commercial application.
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Materials Today Physics
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2026
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IF 9.3
Lijun Zhai,Feng Luo,Lingfang Liu,Xinyue Zhang,Jian Shi,Jian Wang,Yanli Li,Hongxia Liu,Wenjie Xie,Zhigang Sun
The 18-electron Ti 0.75 NiSb compound exhibits intrinsically low lattice thermal conductivity due to the presence of numerous Ti vacancies. However, the high carrier concentration limits further improvement of the thermoelectric performance. In this work, Co atoms are employed to substitute Ni atoms in Ti 0.75 Ni 1- x Co x Sb. The results show that Co substitution effectively tunes the valence electron count of Ti 0.75 NiSb and leads to the formation of a NiSb-based metallic impurity phase, which significantly reduces the carrier concentration from 8.04 × 10 21 cm −3 to 2.31 × 10 21 cm −3 . Consequently, the Seebeck coefficient increases significantly from −94 μV/K for the x = 0 sample to −189 μV/K for x = 0.5, while the electronic thermal conductivity drops substantially from 3.52 to 0.87 W/mK at 873 K. Meanwhile, the lattice thermal conductivity increases due to the reduced Ti vacancy concentration (to satisfy the 18-valence-electron rule) and the formation of the metallic impurity phases. Ultimately, a peak zT of ∼0.50 is achieved at 873 K, representing a ∼47% enhancement compared with the Ti 0.75 NiSb alloy. This work demonstrates that the combination of valence electron count modulation and interface engineering is an effective strategy to optimize the thermoelectric performance of half-Heusler systems. Download: Download high-res image (378KB) Download: Download full-size image
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Molecular Catalysis
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2026
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IF 4.3
Richuan Rao,Hao Zhang,Qiang Ling,Xiongzi Dong,Song Fang,Mingyue Zheng,Tao Wang,Binghui Wang,Chunming Hu
Interfacial Ag° content of Ag-CeO 2 catalysts was modulated by pyrolysis temperature. • Rich Ag 0 catalysts had higher catalytic ability than those rich in Ce 3+ and defects. • Temperature triggered electron transfer of Ag 0 to carbonate-activated CeO 2 interface. • Dynamic evolution of Ag-CeO 2 interface determined catalytic capacity of its catalyst. Ag-CeO 2 catalysts were fabricated with an agar-assisted pyrolysis method and their interfacial structures were tuned to investigate their role in CO oxidation. The catalysts mainly consisted of irregular CeO 2 nanoparticles with abundant metallic Ag 0 , Ce 3+ and oxygen vacancies at the interface. As the pyrolysis temperature increased, the metallic Ag⁰ content decreased while Ag⁺ and Ce³⁺ species increased. Using CO oxidation as a probe reaction, catalytic evaluation confirmed that the activity was positively correlated with the interfacial metallic Ag⁰ content, whereas no direct positive correlation was observed with Ag⁺, Ce³⁺, or oxygen vacancies alone-suggesting a dominant role of Ag⁰, although a possible synergistic contribution from Ce³⁺/oxygen vacancies is not ruled out. Ag-CeO 2 catalysts after CO adsorption were monitored by XPS and in situ FT-IR for identifying the dynamic evolution of Ag-CeO 2 interface. The reaction temperature was revealed to trigger electron transfer from metallic Ag⁰ to the carbonate-bound CeO₂ interface, which simultaneously converted initially formed polydentate and bidentate carbonates into bridging and monodentate intermediates. The reversible redox transformation (Ag⁰ + Ce⁴⁺ ⇌ Ag⁺ + Ce³⁺) at the interface of these catalysts further corroborated the essential role of Ag⁰ in enhancing the catalytic activities for CO oxidation. These findings, obtained with CO oxidation as a model reaction, differ from the simple traditional correlations with oxygen vacancies or Ce³⁺ concentration, offering a molecular-level blueprint for designing highly active and stable CeO₂-supported catalysts for catalytic oxidation reactions. Download: Download high-res image (440KB) Download: Download full-size image
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危险品化学品经营许可证（带存储）