Nature Communications
·
2026
·
IF 18.1
Luo Jiawei,Liu Yuhang,Zhang Jingchao,Liu Zhedong,Guo Zhaoxin,Qian Kunyan,Li Zekun,Huang Pengfei,Wang Chunying,Zeng Jianrong,Liu Rui,Chen Yanan,Ding Jia,Hu Wenbin
Polyanionic positive electrodes with XO 4 (X = P, S, Si etc.) tetrahedra exhibit beneficial properties, making them crucial for energy storage systems. However, strong covalent X-O bonds cause electron localization, reducing intrinsic electronic conductivity and limiting rate performance. Here we show a strategy to directional design the covalency of X-O bonds for enhanced intrinsic electronic conductivity of polyanionic positive electrodes. We developed a non-equilibrium fast calcination technique to synthesize polyanionic positive electrodes inheriting weak covalent (WC) X-O bond characteristics from screened precursor. In as-synthesized NASICON-Na 3 V 2 O 1.6 (PO 4 ) 2 F 1.4 as proof-of-concept positive electrode, the WC P-O bonds effectively activate electron delocalization, thereby increasing electrons transport capability along V-O-P-O-V pathway. The intrinsic electronic conductivity of optimised material achieves 3.57 times enhancement, leading to 3.70 times and 3.86 times improvement in specific capacity and specific energy at 50 C. Meanwhile, the optimised material exhibits capacity retention of 85.9% after 3000 cycles at 1 C. This study potentially opens up a broad space for improving the intrinsic conductivity of polyanionic materials (such as phosphates, sulfates, silicates, etc.), with the potential to promote the development of next-generation high-power positive electrode.
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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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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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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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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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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Haixia Zhang,Kaidi Zhao,Jiaping Chen,Renfei Chu,Xinru Xiang,He bian,Chenguang Ding
The polymerizable monomer ETPTA as the inner phase and Tween 80 as the emulsifier to construct O/W emulsions, which could be polymerized to solid polymers by UV-irradiation with the advantages of environmentally friendly and easy preparation. The stirring speed is an important factor affecting the mean size of emulison droplets and solid particles. Increasing the stirring speed is beneficial for the emulsion stabilization due to the small emulison droplets, which can construct smaller solid particles as the carriers of the catalytic active centers. PdNPs as functional metal nanomaterials are selected as the active centers attributed to the peroxidase activity, which can adsorb on the polymer surface (PdNPs@polymer) because of the electrostatic interactions. The analysis of PdNPs@polymer confirm the PdNPs are well-distributed at the polymer surface and have no noticeable aggregation. PdNPs@polymer can reduce 4-NP to 4-AP in the aqueous solution showing remarkable catalytic activity. The carrier polymer particles prepared with the largest stirring speed loaded with PdNPs has the best catalytic activity compared with the low stirring speeds. PdNPs@polymer with higher stirring speed has outstanding catalytic activity due to the numerous emulsion droplets and corresponding solid particles, which are contributed to the loading of PdNPs and improve the catalytic performance. Our findings of the novel catalyst composites are instructive in providing technical guidance for environmental remediation applications with better catalytic activity and being environmentally friendly.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Jitang Chen,Qian Li,Chengbing Ma,Yupeng Yuan,Huiquan Li
The rational design of heterojunction photocatalysts is essential for overcoming the persistent challenge of charge recombination in solar water-splitting systems. Herein, a step-scheme (S-scheme) AgI/Bi₇O₉I₃ heterojunction was fabricated using a facile one-pot hydrothermal method, where deliberate interfacial engineering enables efficient charge separation and transfer. The optimized heterojunction demonstrated remarkable photocatalytic oxygen (O₂) evolution activity, achieving a rate of 2046.22 μmol·g⁻¹·h⁻¹ under visible-light irradiation (λ ≥ 420 nm)—3.1 and 1.97 times higher than those of pristine AgI and Bi₇O₉I₃, respectively. Ultraviolet photoelectron spectroscopy (UPS) and electron spin resonance (ESR) analyses collectively revealed that a built-in electric field formed at the interface drives the directional migration of electrons from AgI to Bi₇O₉I₃, following an S-scheme charge transfer pathway. This mechanism not only enhances the separation of photogenerated carriers but also preserves strong redox capabilities for the water oxidation reaction. This study presents an effective interfacial engineering strategy for developing high-performance heterojunction photocatalysts and provides fundamental insights into charge behavior in S-scheme photocatalytic systems.
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FOOD CHEMISTRY
·
2026
·
IF 9.8
Yijin Peng,Wenhui Zou,Qisheng Yue,Yunxia Yang,Zhenzhen Xu,Zhongxiang Fang,Linyan Zhou
This study investigated the copigmentation mechanism between punicalagin (PUN) and cyanidin-3-O-glucoside (C3G) using spectroscopic analysis, thermodynamic evaluation, and quantum chemical modeling. UV-VIS spectra revealed enhanced absorbance and red shifts upon increasing PUN concentration to the C3G solution, indicating intensified color. Copigmentation was most effective at acidic pH (3–6) and declined at higher temperatures. Thermodynamic parameters indicated a spontaneous, exothermic interaction between PUN and C3G, involving hydrogen bonding and π–π stacking. FT-IR, 1 H NMR, and IGMH analyses confirmed these interactions and revealed that α -PUN formed more stable complexes with C3G than β -PUN, due to cooperative aromatic-polar interactions and more favorable stacking geometry. Quantum calculations supported the greater stability of α -C3G/PUN complexes. Furthermore, PUN significantly improved the thermal, light, and storage stability of C3G. These findings provide molecular-level insights into anthocyanin-ellagitannin copigmentation and demonstrate the potential of PUN as a natural copigment for improving color stability in food systems.
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CERAMICS INTERNATIONAL
·
2024
·Vol. 50
·期 24
·52228-52239
·
IF 5.1
Dongjiang Wu,Weijie Lv,Zheng Li,Xuexin Yu,Cong Zhou,Bi Zhang,Wei Wang,Huanyue Zhang,Guangyi Ma,Fangyong Niu
High-entropy oxides (HEOs) have attracted extensive research interest due to their unique structural features, customizable elemental compositions, and tunable functional properties. Nevertheless, the complexity, low efficiency, and high cost of the existing HEO synthesis methods place limitations on them. In this study, Laser directed energy deposition (LDED) was employed to synthesize (Mg, Co, Ni, Cu, Zn)O oxides. Additionally, the novelty of applying the LDED process to multicationic systems was emphasized. The comparison between specimens fabricated from mixed powder via LDED(MP) and those fabricated from pre-sintered powder via LDED(SP) encompasses macroscopic morphology, microstructure, and performance. The results showed that SP significantly enhanced the density from 86.44 % to 96.70 % compared to MP. The macro-segregation of Cu and Cu 2 O in the phase composition was observed in MP and SP. High-temperature pre-sintering promoted the solid solution formation of Co and Ni during LDED, leading to more severe micro-segregation of Co and Ni. When employed as anodes in lithium-ion batteries, MP and SP have outstanding long-term cycle stability, according to electrochemical performance studies. At a current density of 100 mAg −1 , these specimens maintained a capacity retention rate of 100 % even after 200 cycles. The initial discharge capacities of MP and SP were respectively 477.73 mAh g −1 and 373.86 mAh g −1 . This study is expected to present a novel approach for the rapid synthesis of (Mg, Co, Ni, Cu, Zn)O oxide ceramics .
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International Journal of Electrochemical Science
·
2023
·Vol. 11
·期 8
·6466-6476
·
IF 1.5
Changling Yan,Jin Li,Tingting Meng,Xun Liu,Ruixing Zhang,Yujuan Chen,Gongke Wang
A simple and reliable method was proposed for rapid detecting ciprofloxacin, based on molecularly imprinted technology. The molecularly imprinted ciprofloxacin hydrochloride (CPX) sensor was prepared by electropolymerization of pyrrole (Py) and o-phenylenediamine (o-PD) on the pencil graphite electrode (PGE). The performance of the sensor was characterized by square wave voltammetry (SWV) using potassium ferricyanide as molecular probe. Under optimal conditions, the sensor displayed high selectivity and stability towards CPX. A linear relationship between the change in current (Δi) and the logarithm of CPX concentrations from 1×10 −9 to 1×10 −3 mol/L was obtained with a detection limit of 7.58×10 −11 mol/L (S/N=3). Furthermore, the MIP sensor was applied for the analysis of real tablet samples with high accuracies.
研究领域:
分析化学
·
药物分析
·
电化学传感
·
分子印迹技术
·
药物残留检测
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Small
·
2023
·Vol. 19
·期 31
·2206597
·
IF 13.3
Wen-Chen Wang,Yi-Han Song,Guo-Duo Yang,Rui Jiao,Jia-Yu Zhang,Xing-Long Wu,Jing-Ping Zhang,Yan-Fei Li,Cui-Yan Tong,Hai-Zhu Sun
Electrolyte additive is an effective strategy to inhibit the uncontrolled growth of Li dendrites for lithium metal batteries (LMBs). However, most of the additives are complex synthesis and prone to decompose in cycling. Herein, in order to guide the homogeneous deposition of Li + , carbonized polymer dots (CPDs) as electrolyte additives are successfully designed and synthesized by microwave (M-CPDs) and hydrothermal (H-CPDs) approaches. The controllable functional groups containing N or O (especially pyridinic- N , pyrrolic- N , and carboxyl group) enable CPDs to keep stable in electrolytes for at least 3 months. Meanwhile, the clusters formed between CPDs and Li + through electrostatic interaction effectively guide the uniform Li dispersion and limit the “tip effect” and dendrite formation. Moreover, as lithiophilic groups increase, the strong electrostatic interference for the solvation effect of Li + in the electrolyte is formed, which induces faster Li + diffusion/transfer. As expected, H-CPDs achieve the ultra-even Li + transfer. The corresponding Li//LiFePO 4 full cell delivers a high capacity retention rate of 93.8% after 200 cycles, which is much higher than that of the cells without additives (61.2%) and with M-CPDs (83.7%) as additives. The strategy in this work provides a theoretical direction for CPDs as electrolyte additives used in energy storage devices.
研究领域:
材料科学
·
储能
·
电化学
·
纳米材料
·
电池技术
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