INDUSTRIAL CROPS AND PRODUCTS
·
2026
·
IF 6.4
Zheyuan Ding,Juncheng Zhao,Jiaming Zhang,Junzhong Xie,Kunye Zhang,Cenkai Zhao,Jikun Xu,Yu Wang,Xuepin Liao,Xiao Xiao,Bi Shi
A 100% lignin β -O-4 model conversion with 93.1% monomer selectivity and a high TON was obtained. • The interplay between Ru particle and single atom contributed to the high performance. • Favorable stability under high-temperature heating and high-pressure with reusability > 97%. Catalytic hydrogenolysis is a promising strategy for converting lignin into valuable aryl platform chemicals, contingent upon the availability of high-performance catalysts. The philosophy for the catalyst rational design towards high conversion and selectivity was rarely reported to the best of our knowledge. We illustrate the synergistic interplay between Ru particles and single atoms, contributing to the high catalytic performance. The N-doped carbon-supported Ru catalyst is designed by combining collagen fiber-immobilized tannin adsorption with carbonization (TNC). The Ru is finely dispersed on the TNC support in the form of both single atoms and nanoparticles at a low metal loading of 0.91 wt% (noted as Ru/TNC). It achieved a 100% conversion with a 93.1% aromatic monomer yield in the catalytic hydrogenolysis of lignin β –O–4 model 2-phenoxy-1-phenylethanol (PPE) at 260 °C and 2 MPa H 2 . The primary products of this reaction included ethylbenzene, cyclohexanol, and ethylcyclohexane, and a high turnover number (TON) of 955 was obtained, which surpassed most reports. Specifically, the Ru particle sites facilitate efficient H 2 dissociation, while the single-atom sites provide a weakly adsorbing environment for reaction intermediates due to electron-rich isolated Ru atoms, thereby effectively suppressing over-hydrogenation. This work offers a promising catalyst rational design principle for selective hydrogenation for efficient C–O bond cleavage of lignin, demonstrating significant potential in transforming lignin into value-added platform chemicals. Download: Download high-res image (151KB) Download: Download full-size image Possible reaction pathway on Ru/TNC catalyst consisting of Ru particle and Ru single atom. The intermediates easily desorbed over Ru single atom site due to the weak adsorption. Purple ball: Ru atom, red ball: N atom, white ball: H atom where Ru particles serve as H* species supply pump due to H spillover.
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FUEL
·
2026
·
IF 7.8
Haoxuan Tan,Jianhao Jiao,Yun Zu,Qiang Li,Yucai Qin,Ye Yang,Kai He,Zhongxing Geng,Lijuan Song
Silica-supported tungsten oxides (WO x /SiO 2 ) as industrial catalysts are widely applied for the metathesis of ethylene and butylene to propylene, yet often suffer from limited dispersion and stability due to ill-defined interactions between tungsten species and surface silanols microenvironment of silica support. In this work, the type and density of specific surface silanols in silica were successfully tailored by precisely controlling thermal pretreatment temperature. Multiple advanced characterizations and theoretical calculations revealed that vicinal-silanol-rich surface microenvironments were strongly associated with the formation of highly dispersed and stable isolated dioxo W (VI) -O-Si structure, while effectively suppressing the formation of less-active W-O-W aggregates. Under the comparable conditions, the optimized WO x /SiO 2 ‑ 550 catalyst with rich W (VI) -O-Si sites delivered an enviable propylene yield of over 67.9% in the olefin metathesis with a lower deactivation rate (0.069 h −1 ), far outperforming conventional catalysts. Moreover, the catalyst demonstrated satisfactory long-term stability over 200 h on stream and partial activity recovery upon oxidative regeneration. Mechanistic studies further suggested that the dioxo W (VI) -O-Si structure enhanced the adsorption and activation of olefins and favored the formation of surface species consistent with literature-proposed metal‑carbene intermediates, thereby improving both catalytic activity and propylene selectivity. These findings provide a fundamental understanding and a practical strategy for the rational design of highly-dispersed and stable supported tungsten catalysts for olefin metathesis.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Jiale Ni,Ziyang Xu,Huiduo Li,Yi Feng,Jianfeng Yao
Hierarchical three-dimensional (3D) porous architectures are critical for overcoming mass-transfer limitations in catalytic CO 2 conversion, yet their scalable integration with atomically dispersed active sites remains challenging. Herein, we report a facile precursor-anchoring strategy to fabricate monolithic Zn, N, O-codoped porous carbon (ZnNC-900) via carbonization of melamine sponge uniformly coated with a Zn 2+ -polydopamine layer. The melamine sponge provides a continuous 3D macroporous network that facilitates efficient reactant flow, whereas dopamine-mediated chelation generates Zn and N sites along with oxygen functionalities. This unique structure not only enhances the adsorption and activation of both CO 2 and epoxides but also enables a pronounced synergistic photothermal-photocatalytic effect under light irradiation. Under mild conditions of either thermal (80 °C, 0.1 MPa) or room-temperature light irradiation (350 mW/cm 2 ), ZnNC-900 achieves a high yield of >99% within 12 h for CO 2 cycloaddition with epichlorohydrin. Furthermore, the catalyst displays robust stability and broad substrate tolerance, underscoring its practical potential for CO 2 fixation.
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PROGRESS IN ORGANIC COATINGS
·
2026
·
IF 7.9
Jie Liu,Fu Xia,Nan Zheng,Changming Zhang,Zehua Xu,Wanbin Zhang,Jia He,Guoxian Zhang,Wenge Li,Qiang He
In response to the prevailing challenges of the inherent trade-off between anti-icing performance and optical transparency, as well as poor environmental durability in anti-icing coatings, this study presents a multifunctional biomimetic coating that integrates efficient passive anti-icing capability, superior durability, and high optical transmittance. A UV-curable fluorinated polysiloxane/polyurea (FPSU) resin was synthesized, serving as the polymer matrix. Al₂O₃ microspheres were incorporated onto the surface via a spray-coating approach, with simultaneous resin crosslinking and robust anchoring of microstructures achieved through in situ UV curing, thereby enabling the successful fabrication of a biomimetic anti-icing coating of FPSUA imitating the surface of rose petals. The FPSUA coating achieves a static water contact angle of 158.22° and a sliding angle of 5.45°. On glass substrates, the freezing time increases from 25 s in the uncoated state to 618 s after FPSUA coating application, while the ice adhesion strength drops sharply from 357.96 kPa to 18.94 kPa. After rigorous exposure to sand impact, sandpaper abrasion, alcoholysis, and freeze-thaw cycles, the static contact angle remains above 150°, and the sliding angle stays below 11.49°. The FPSUA coating exhibits a refractive index of 1.432 and a transmittance of 80.32% at 589 nm. The FPSUA biomimetic anti-icing coating shows significant potential for anti−/de-icing applications in critical transparent components such as aircraft windshields, UAV sensor windows, and solar panels.
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FOOD CHEMISTRY
·
2026
·
IF 10.4
Yejun Zhong,Ziyi Zhu,Ruiyun Chen,Liqiang Zou,Wei Liu,Shan Sun,Jianyong Wu,Er Sheng Gong
Natural waxes in oil phase enhance structural integrity of W/O/W emulsion gels. • Sunflower wax yields superior probiotic survival during pasteurization and digestion. • Wax-driven oil solidification protects L. plantarum and S. thermophilus effectively. • Novel oil-phase gelled emulsion system advances probiotic delivery in food matrices. This study explored impact of natural waxes (beeswax, BW; rice bran wax, RBW; sunflower wax, SFW)-mediated oil-phase gelling on the physicochemical properties and probiotic-protective efficacy of W/O/W emulsion gel beads co-encapsulating Lactobacillus plantarum and Streptococcus thermophilus . Wax incorporation preserved “two-membrane, three-phase” emulsion architecture while increasing droplet sizes and viscosity, with SFW and RBW yielding denser, more uniform bead microstructures and reduced moisture mobility compared to controls (without wax, NW) and BW. XRD and DSC revealed β’-polymorphic crystals in RBW and SFW, correlating with higher melting points and thermal stability. During pasteurization, simulated gastrointestinal digestion, and 28-day storage in acidic orange juice, SFW beads exhibited superior probiotic viability, with log CFU reductions minimized to 2.6 for Lactobacillus plantarum and 2.0 for Streptococcus thermophilus , versus 3.4 and 3.1 in NW. This approach holds significant promise for improving probiotic encapsulation in functional foods, enabling targeted delivery and extended shelf-life under adverse conditions. Download: Download high-res image (99KB) Download: Download full-size image
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高影响因子
INORGANIC CHEMISTRY
·
2026
·Vol. 65
·期 30
·17378-17391
·
IF 4.6
Wang Ying,Ma Yuyang,Cai Yimin,Yuan Lihua,Feng Wen,Cui Shuxun
N,O-Hybrid ligands featuring N-heterocyclic backbones
are promising
extractants for lanthanide separation, yet the governing role of N-donor
basicity in their complexation and extraction behavior toward trivalent
lanthanides remains less understood. This work investigates the effect
of N-donor basicity of two bipyridine- and bipyrimidine-based tetradentate
diamides, i.e., Et-Tol-BPDA and Et-Tol-BPymDA, on the coordination
and extraction of lanthanides. Results from solvent extraction experiments
indicate that both ligands extract light lanthanides via a cation-exchange
mechanism, while Et-Tol-BPymDA exhibits markedly higher selectivity
and efficiency with 1–6 M HNO 3 , achieving a La/Sm
separation factor of 90 at 3 M HNO 3 . The superior extraction
performance of Et-Tol-BPymDA over Et-Tol-BPDA stems from its enhanced
protonation resistance under acidic conditions, where the electron-withdrawing
effect of the extra bipyrimidine nitrogen atoms lowers the N-donor
basicity, allowing the ligand to retain its metal-binding capacity
even in highly acidic media, as validated by combined spectroscopic,
crystallographic, and theoretical analyses. The bonding analysis of
crystallographic and optimized complex structures confirms that amide
oxygen atoms serve as the primary coordination sites and produce shorter
metal–ligand bonds and stronger coordination interactions for
Et-Tol-BPDA. These findings unravel how the subtle variations in the
basicity of N-heterocycle modulate the coordination and extraction
properties of N,O-hybrid ligands toward trivalent lanthanides.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2026
·
IF 19.7
Qihang Tian,Zhiqiang Cai,Yi Li,Chong Chen,Haitao Xu,Chengzhang Zhu
Hierarchical x MCMnO x was fabricated via facile in-situ silane confinement strategy. • Si-O-Mn are formed by the interaction of amorphous siloxane network and MOF precursor. • Mn 4+ + Ce 3+ ⇌Mn 3+ + Ce 4+ cycle forms a dynamic equilibrium to produce oxygen vacancies. • 3MCMnO x shown superior activity for low-temperature NH 3 -SCR with H 2 O/SO 2 resistance. Developing high-efficiency catalysts for the selective catalytic reduction of NO x with NH 3 (NH 3 -SCR) is of great significance for achieving ultra-low NO x emissions. Herein, hierarchical x MCMnO x hollow nanorod hybrids were fabricated via a facile in-situ silane confinement strategy using Ce-doped Mn-BTC modified with MTMS (methyltrimethoxysilane) as the sacrificial template for NH 3 -SCR reaction. Systematic studies demonstrated that the tight chemical interaction between the amorphous siloxane network and the MOF precursor facilitated the highly dispersed distribution of the doped Ce species around the Mn active sites, forming abundant Si-O-Mn interface covalent bonds and strong metal-metal interactions (Mn 4 + + Ce 3+ ⇌ Mn 3+ + Ce 4+ ). Benefiting from the stronger NH₃ adsorption capacity, abundant reactive oxygen species, and surface-enriched hydrophobic methyl groups, the optimized 3MCMnO x promoted the Eley-Rideal (E-R) reaction pathway via strong Si-O-Mn interfacial coupling, achieving a 100% NO conversion rate within the temperature range of 150–300 °C at a GHSV of 36000 h −1 and robust H 2 O/SO 2 tolerance. Furthermore, the universality of this way was verified in analogous Co-based and Cu-based systems. This work opens a new avenue for the design of efficient and durable MOF-derived denitration catalysts for non-electric industries. Download: Download high-res image (250KB) Download: Download full-size image
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ENERGY & FUELS
·
2026
·Vol. 40
·期 33
·18068-18080
·
IF 6
Fu Zong-Pin,Zhao Yun-Peng,Wu Yu-Fa,Qiu Le-Le,Liu Fang-Jing,Zhong Mei,Liang Jing,Cao Jing-Pei
Efficient depolymerization of lignite remains challenging
owing
to both its structural complexity and the high stability of oxygen-containing
bridge linkages. Herein, low-temperature pyrolysis and oxidative pretreatments
were employed to regulate oxygen-containing structures and enhance
the hydrogenolysis reactivity of Zhaotong lignite (ZT). These pretreatments
promoted the structural evolution of lignite, activated oxygen-containing
bridge structures, and suppressed the recondensation of reactive intermediates,
thereby facilitating subsequent depolymerization reactions. A CuCoOx
catalyst capable of dynamic in situ reconstruction was introduced
for catalytic hydrogenolysis. Under reaction conditions, partial reduction
of CuCoOx generated reconstructed Cu 0 -CoOx interfacial
active sites, where the synergistic interaction between metallic Cu
and defect-rich CoOx promoted H 2 activation and selective
C–O bond cleavage. Density functional theory (DFT) calculations
further revealed that interfacial electron redistribution at the Cu
cluster/Vo-Co 3 O 4 (311) interface facilitated
H 2 activation and stabilized reactive hydrogen species.
These findings provide new mechanistic insights into pretreatment-regulated
and interface-controlled hydrogenolysis pathways for the efficient
valorization of low-rank coal.
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JOURNAL OF NANOBIOTECHNOLOGY
·
2026
·
IF 15
Deng Xu,Xie Xixiang,Zhou Xing,Jiang Lanfang,Zhu Tao,Su Rixiang,Chen Chunmei,Chen Wan,Chen Chunxia
The therapeutic efficacy of ischemic stroke (IS) treatment is severely limited by insufficient accumulation of therapeutic agents within ischemic lesions and persistent secondary injury after ischemia–reperfusion. Herein, we report a cRGD-functionalized exosome-based nanoplatform that enhances ischemic lesion-associated accumulation and antioxidative neuroprotection for the treatment of IS. Neural stem cell-derived exosomes were functionalized with cyclic RGD peptides (cRGD) and subsequently loaded with Mn₃O₄ nanoparticles to construct a hybrid nanosystem (cRGD-Exo@Mn₃O₄). The engineered exosomes preserve intrinsic brain tropism, while cRGD modification promotes preferential accumulation in ischemic regions, potentially through interaction with α v β 3 integrin that is upregulated in ischemic lesions. The incorporated Mn₃O₄ nanoparticles confer robust reactive oxygen species (ROS) scavenging capability, thereby mitigating oxidative stress in ischemic microenvironments. In vitro and in vivo studies demonstrate that cRGD-Exo@Mn₃O₄ exhibits enhanced accumulation in ischemic regions compared with non-modified counterparts. The nanosystem effectively attenuates oxidative stress and neuroinflammation, leading to reduced infarct volume, alleviation of cerebral edema, and improved neurological function in MCAO/R mice. Mechanistically, transcriptomic analysis suggests that the therapeutic effects are associated with modulation of inflammation-and cell death-related pathways, including suppression of the RIPK1/RIPK3/MLKL signaling cascade. Collectively, this study presents a rationally designed exosome-based nanoplatform integrating ischemic lesion-associated accumulation with ROS-scavenging capability. Graphical abstract
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Nanomaterials
·
2026
·Vol. 16
·期 7
·398
·
IF 4.8
Weiao Li,Litiao Ren,Yuqi Zhao,Xinping Cong,Mingjin Zhang,Yan Liu,Qihui Shen,Xiaoyang Liu
Herein, an electrochemical sensor is reported for the first time based on an ordered macro–microporous composite derived from metal–organic frameworks (MOFs) for the highly sensitive detection of auramine O (AO), a Group 2B carcinogen. The hierarchical pore architecture, integrating an ordered macroporous network with a microporous ZIF-8 framework, enables the uniform dispersion of a high density of catalytically active sites. The interconnected macroporous channels facilitate efficient mass transport and rapid removal of reaction byproducts, effectively preventing pore blockage and ensuring stable sensing performance during repeated measurements. Owing to these structural advantages, the proposed sensor exhibits outstanding analytical performance toward AO detection, with a sensitivity of 0.4843 μA μM−1, a detection limit of 0.168 μM (S/N = 3), and a wide linear range from 0.5 to 50 μM. Moreover, the sensor demonstrates excellent selectivity and reproducibility, maintaining reliable responses even in the presence of 100-fold excess common food constituents such as tartrazine and glucose. Real sample analysis further confirms its high accuracy and operational stability. Overall, the electrochemical sensor based on silver nanoparticle-decorated ordered macro–microporous ZIF-8 synthesized via in situ reduction shows great potential as a portable and on-site tool for rapid AO detection in food. More broadly, ordered macro–microporous MOF-derived materials represent a promising platform for advanced electrochemical sensor applications.
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ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2026
·
IF 12.2
Yunpeng Xue,Lu Li,Yuren Wang,Yuchen Xiong,Min Deng,Kang Song
Abstract Lake biofilms are microbial habitats for nitrogen transformation, but how carrier type and elevation influence N2O dynamics remains unclear. We examined abiotic- and biotic-carrier biofilms from 12 lakes spanning 4–4272 m using anoxic incubations, 15N tracing, selective inhibition, isotopocule analysis, and metagenomics. Net N2O emission potential increased with elevation in both carrier types, with the largest carrier contrast at high elevation, where biotic-carrier biofilms showed the highest net N2O emission potential. 15N partitioning showed a marked shift in emission sources. At low elevation, heterotrophic nitrification dominated abiotic-carrier biofilms (∼91%), whereas denitrification contributed ∼57% in biotic-carrier biofilms. At high elevation, denitrification accounted for 67–97% of net N2O emission across both carriers, and bacterial denitrification dominated the total denitrification rate potential. Metagenomic profiles provided mechanistic support: high-elevation biotic-carrier biofilms showed higher relative representation of genes for dissimilatory nitrate reduction to ammonium and nitrogen fixation, but had few nosZ-carrying genomes, indicating weak terminal N2O reduction capacity. Overall, carrier type and elevation jointly shape nitrogen transformation pathways. High-elevation lake ecosystems, particularly those with abundant biotic substrates, may harbor disproportionately important biofilm N2O hotspots under global change.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Xiaoxia Zhang,Meng Rong,Junfeng Niu,Tianwei Tan
The development of mixed-matrix membranes (MMMs) with concurrently high permeability and selectivity is critical for efficient CO2 separation and capture. Herein, an ultramicroporous biomass-derived carbon molecular sieve (NOPC-600), featuring high nitrogen and oxygen codoping, was synthesized via low-temperature KOH activation. Cross-linked poly(ethylene oxide) (XLPEO)-based MMMs were fabricated using NOPC-600 as a functional filler. The ultramicroporous architecture and abundant polar sites of NOPC-600 significantly enhanced CO2 solubility and facilitated gas transport, while promoting strong interfacial compatibility with the PEO matrix through hydrogen bonding. At a filler loading of 1.5 wt %, the resulting MMM exhibited a CO2 permeability of 821 barrer and a CO2/N2 selectivity of 48.6, representing improvements of 110 and 49.5%, respectively, over pristine XLPEO, surpassing the 2008 Robeson upper bound. Moreover, the membrane demonstrated excellent stability under mixed-gas conditions. This work presents a promising approach for designing high-performance CO2 separation membranes using N/O-codoped ultramicroporous biocarbon fillers.
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