NEW JOURNAL OF CHEMISTRY
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2026
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IF 2.5
Chengcheng Liu,Lin Shao,Guo-Heng Wei,Yi-Fan Li,Pan Guo,Ligang Zhang,Cong Wang,Xiao-Yan Zhao,Dejin Zhang,Jing-Pei Cao
Lignin, due to its structural rigidity, tends to form coke deposits during catalytic hydrodeoxygenation (HDO), causing catalyst deactivation, and eliminating coke to restore performance is challenging. In this study, Co 3 O 4 shows excellent HDO performance toward lignin model dimers with high selectivity for demethoxylation and deethoxylation under mild conditions via a one-step strategy integrating in-situ reduction and HDO, and enables lignin HDO. At 240 o C, 2 MPa, and 20 h, lignin achieved a 73 % liquid yield, with 64%, 30%, and 6% selectivities to alkanes, alcohols, and phenols. This is attributed to Co 3 O 4 's high Co-O bond energy, dominant (220) crystal plane exposure, and high Co 3+ /Co 2+ ratio, facilitating in-situ reduction to metallic cobalt active sites. Coke on Co 3 O 4 can be removed by calcination to restore performance, with 90% of the initial liquid yield retained after five cycles. This low-cost commercial non-noble metal Co 3 O 4 enhances the economic feasibility of lignin's high-value utilization.IntroductionLignin, accounting for 15-30 wt% of lignocellulose, is the most abundant renewable aromatic resource on earth, holding immense potential to replace fossil feedstocks in producing high-value
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JOURNAL OF FLUORESCENCE
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2025
·Vol. 36
·期 2
·1727-1743
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IF 3.1
Liu Shili,Yao Xuemei,Zhang Xinyue,Sheng Kai,Wang Chenyi,Zhu Tong,Yu Ruijin,Xing Guoxiu
In this study, a series of Ce 3+ , Eu 2+ , and Ce 3+ /Eu 2+ co-doped oxyapatite Ba 2 La 3 (SiO 4 ) 2 (PO 4 )O (BLSPO) phosphors were synthesized by the high-temperature solid-phase method. The crystal structure, luminescent properties and application prospects of the material were systematically studied. BLSPO crystallizes in the P 6 3 / m space group (No. 176), exhibiting experimentally confirmed high crystallinity. Photoluminescence and excitation spectroscopy analysis indicated that the BLSPO: Eu 2+ phosphor could be effectively excited at 370 nm and was highly suitable for use in LED chips. The emission spectrum of BLSPO: Eu 2+ phosphor shows a broadband emission peak of Eu 2+ ions, with the peak at 510 nm. Through Gaussian fitting, this peak can be further fitted to two different emission centers at 507 nm and 536 nm, corresponding respectively to the M(I) and M(II) coordination environments within the BLSPO matrix. Under 315 nm excitation, the BLSPO: x Ce 3+ phosphor demonstrates a broad emission band peaking around 428 nm, with experimental results identifying 10 mol% as the optimal cerium ion doping concentration for maximal performance. In the BLSPO: Ce 3+ , Eu 2+ co-doped system, the energy transfer mechanism between Ce 3+ and Eu 2+ was studied, and the energy transfer efficiency η value gradually increased from 0% to 86.96% with the increase of Eu 2+ concentration. The mechanism of energy transfer is dipole-dipole interaction mechanisms. The thermal stability of the BLSPO:10 mol%Ce 3+ , 10 mol%Eu 2+ samples was tested, and the sensitivity factors S a and S r reached their respective maximum values of 2.61 × 10 − 2 K − 1 and 0.99% K − 1 at 480 K. The thermal stability test of BLSPO:5 mol%Eu 2+ shows that at 420 K, the sample maintains 52% of its initial luminous intensity. Therefore, the CIE chromaticity coordinates of the green LED packaged with BLSPO:10 mol% Eu 2+ phosphor is (0.263, 0.466), the CIE chromaticity coordinates of the w-LED are (0.335, 0.355), the color rendering index ( R a ) is 92, and the correlated color temperature (CCT) is 5366 K.
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Journal of Energy Storage
·
2026
·
IF 10.7
Wenteng Yang,Zhiding Han,Zhi Nie,Yingqiang Wu,Zaowen Zhao,Lei Yu,Junchen Zhou,Guizhen Wang,Xuerong Zheng,Yida Deng
Polyethylene oxide (PEO)-based electrolytes exhibit great compatibility with lithium-metal anodes. However, complex cleavage reactions occur with cathode electrode at high voltages, and constructing artificial interfacial layers has emerged as an effective strategy. In this work, we employed atomic layer deposition (ALD) to build a nanometer-scale amorphous Al₂O₃ interlayer between the LiNi₀.₆Co₀.₂Mn₀.₂O₂ (NCM622) cathode and the PEO/Li 7 La 3 Zr 2 O 12 (LLZO) composite electrolyte, which enhanced the cycling stability of the cells at 4.3 V. With an optimized interfacial thickness, the capacity retention improved from 44.8% to 97.3% after 100 cycles and remained 86.5% after 200 cycles, accompanied by enhanced rate capability. The artificial interlayer suppressed parasitic reactions by blocking direct contact between the active material and polymer electrolyte, thereby alleviating interfacial polarization during cycling.
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FOOD CHEMISTRY
·
2026
·
IF 10.4
Yi Qin,Siyu Liu,Liang Liu,Shuiping Ouyang,Wenwen Zhang,Yimin Fan
This study developed a dilute acid pretreatment method (0.3 M HCl) for the efficient production of nanochitin, achieving a yield of 87.14%. The obtained nanofibrils measured 271.15 ± 13.64 nm in length and 10.25 ± 0.50 nm in width, with a crystallinity of 87.15%. This strategy demonstrated a comparable hydrolysis effect to the conventional 3 M HCl method. A Pickering emulsion with smaller droplets and excellent emulsification performance was prepared by homogenizing nanochitin and gelatin at a total mass concentration of 1%. When the nanochitin-to-gelatin ratio was 5:5, the storage modulus of the emulsion was approximately 2.5 times that of the system stabilized by gelatin alone. Furthermore, increasing the mass concentration above 2% resulted in the formation of an emulsion gel, which exhibited significantly enhanced rheological performance and stability.
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高影响因子
FOOD RESEARCH INTERNATIONAL
·
2026
·
IF 8.8
Chan Li,Xue Yang,Yunfei Zou,Li Zhang,Chuhuan Wei,Yan Ran,E. Zhao,Jibiao Yuan,Keshan Wang,Yongguo Jin,Ying Zhou,Qiujin Zhu,Yuxin Cheng,Yuanyuan Liu
Egg white gel (EWG) is a highly important raw and auxiliary material in food industry. With the increasing demand of consumers for nutrition, developing a modification method for regulating the texture of traditional egg white gel while enhancing its nutritional efficacy has become a challenge. Herein, a hierarchical W/O/W double emulsion filled gel was fabricated via a two-level emulsification process. The primary W/O emulsion, stabilized by synthesized γ-cyclodextrin metal-organic frameworks (CD-MOFs) Pickering emulsifiers, was incorporated into an egg white solution, where the endogenous emulsifying properties of the proteins facilitated the formation of the secondary O/W interface. The stability and morphology of the CD-MOFs-stabilized W/O emulsion (CDME) were analyzed, and the gel properties, molecular interactions, and microstructure of the W/O/W emulsion filled EWG gel (CDME-EWG) was then evaluated. The results indicated that CD-MOFs at 6 mg/mL (CDME-6) significantly enhanced the stability of the Pickering emulsion. This effect was achieved through the formation of a dense interfacial film at the oil/water boundary, which effectively promoted droplet dispersion and suppresses coalescence. Furthermore, the emulsion filled gel with 6 mg/mL CD-MOFs (CDME-EWG6) promoted the cross-linking within the gel network, leading to a more compact structure, enhanced water retention (52.84%) and hardness (887.00 g), as well as the enhancement in encapsulation capability (81.77%) and bioavailability (41.18%) of lutein. This study proposed a novel strategy for improving the performance of protein gels, which also provided the potential for co-encapsulation of multi-component bio-actives via the porous CD-MOFs and compartmentalized chamber within the W/O/W emulsion
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Catalysis Science & Technology
·
2026
·
IF 4
Yuzhen Hu,Ruiying Xiong,Xin Qu,Taras Nagornyy,Zhenlong Song,Xingye Zeng,Ning Li,Qi Zhang,Longlong Ma
Selective C-C bond cleavage in lignin is a pivotal step toward its efficient utilization, enabling the production of diverse and valuable chemicals from this abundant and renewable resource. Among the catalysts reported for oxidative cleavage of C-C bond in lignin β-O-4 ketones, CeO₂-supported Pd catalysts have demonstrated outstanding activity. However, the exact nature of the active Pd sites responsible for C-C bond cleavage remains poorly understood, limiting mechanistic insights into this transformation. In this study, CeO₂ supports with four distinct morphologies including rods (R), spheres (S), cubes (C), and polyhedrons (P) were synthesized to investigate their influence on the catalytic activity of Pd/CeO₂ catalysts in the oxidative cleavage of β-O-4 ketones. The catalytic performance was found to depend strongly on the morphology of CeO₂, with Pd/CeO₂-P exhibiting the highest activity for C-C bond cleavage. This catalyst possessed the lowest Pd⁴⁺ content and the highest Pd⁰/Pd²⁺ ratio among the series. By systematically tuning this ratio, a volcano-type relationship between Pd⁰/Pd²⁺ ratio and catalytic activity was established, indicating a dual-site mechanism in which Pd⁰ facilitates the formation of reactive oxygen species, while Pd²⁺ serves as the active center for C-C bond cleavage.
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INDUSTRIAL CROPS AND PRODUCTS
·
2026
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IF 6.4
Nan Wang,Ge Chen,Zhenyun Li,Qizhao Xia,Jie Xin,Chi Zhang
D. officinale cellulose was extracted and oxidized into nanofibrils. • CNFs and zein formed nanostructured W/O/W Pickering delivery systems. • Higher oil fractions enhanced emulsion viscoelasticity and gel networks. • The delivery nanosystems protected Sal B for targeted oral delivery. This study developed novel W/O/W Pickering double emulsions (PDEs) stabilized by Dendrobium officinale Kimura et Migo-derived cellulose nanofibrils (CNFs) and zein nanoparticles (ZNPs) for the delivery of salvianolic acid B (Sal B). CNFs were obtained via TEMPO oxidation, forming a highly extended, interwoven nanoscale network. Driven by electrostatic, hydrogen-bonding, and hydrophobic interactions, CNFs and ZNPs (1:2) co-assembled at pH 4.0. This assembly enabled the one-step fabrication of W/O/W PDEs, as confirmed by optical and confocal laser scanning microscopy. The emulsion droplets remained uniformly distributed and highly stable over a 30-day storage period. Rheological analyses showed that increasing the oil fraction from 50% to 70% induced pronounced elastic gel behavior and enhanced system viscoelasticity. These higher lipid fractions effectively reduced free fatty acid release during simulated in vitro gastrointestinal digestion. More importantly, the construct successfully protected Sal B from premature degradation, enabling its release in the gut. These results highlight the potential of D. officinale cellulose as a sustainable plant stabilizer and establish a nanocellulose-based formulation platform for plant bioactive compounds in pharmaceutical and industrial applications. Download: Download high-res image (236KB) Download: Download full-size image
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Surfaces and Interfaces
·
2025
·
IF 6.3
Zhenlang Mai,Zhihui Zhang,Kaiwei Zhong,Tingting Wu,Changhong Wang
While nanofluids act as highly efficient heat transfer media, insufficient stability restricts their practical use in specific thermal management scenarios. In this study, hexadecyl trimethoxy silane (HDTMS) was used as a surface modifier. It was chemically grafted onto nano-Al₂O₃ particles, producing HDTMS-functionalized Al₂O₃ particles and the corresponding oil-based immersion composite nanofluids. The influence of HDTMS on the suspension stability of oil-based nanofluids was systematically evaluated, along with a comprehensive analysis of their thermophysical properties. Furthermore, the binding mechanisms between nanoparticles and mineral oil, both pre- and post-modification, were elucidated at the microscopic level via molecular dynamics simulations. Results indicated that HDTMS modification successfully introduced long carbon chains onto the nanoparticle surfaces, imparting enhanced lipophilicity. The 0.4 wt% modified nanofluids (HT-O) maintained a transmittance of 59.89% after 30 days of static settling. At the microscopic scale, the interaction energy between HDTMS-Al₂O₃ and mineral oil EC-160 increased by 51.92% at 343 K, and the secondary peak in the radial distribution function markedly decreased to 26.27 with stabilized fluctuations, indicating that the grafted layer effectively suppressed particle aggregation and promoted dispersion uniformity through steric hindrance. This study first applied modified alumina nanofluids to the immersion thermal management of batteries, providing key technical insights for developing immersion cooling media that integrate high thermal conductivity, long-term stability, and electrical insulation for battery thermal management. Meanwhile, molecular dynamics simulation was employed to reveal the intrinsic molecular-level mechanism behind the enhanced stability of the nanofluids.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Jili Yuan,Hao Yin,Xin Ge,Ronglan Pan,Caijuan Huang,Dechao Chen,Lin Hu,Haibo Xie
The coordination environment of transition metals in single-atom catalysts (SACs) is crucial for tuning the pathway of the electrocatalytic oxygen reduction reaction (ORR). However, it is significantly difficult to simultaneously and precisely control the first and second coordination structure near the metal active center. Herein, we report that the activated carbon black was used to anchor transition metals’ single atoms with a similar first and second coordination structure. As a result, Co-SACs exhibit an extraordinary performance for ORR to produce H 2 O 2 , where a current density of around ∼2.8 mA cm −2 at 0.1 V vs RHE by rotating ring-disk electrodes and a high yield rate of 110.2 mmol g metal −1 h −1 at the potential of 0.3 V vs RHE in a gas diffusion electrodes (GDEs) cell, with a high positive onset potential of 0.65 V vs RHE and a >80% selectivity of H 2 O 2 at the potential range from 0.25 to 0.65 V vs RHE, respectively. The combined experimental observations and theoretical calculations indicate that the catalytic active center lies in the Co-C 3 /O 1 moiety of the adjacent epoxy group. The possible position of the epoxy group in the second coordination sphere was further revealed. Moreover, Co-SACs were employed in an electrocatalytic GDEs cell for distributed generation of H 2 O 2 in the acidic media, and coupling Fe-SACs-based Fenton filter or electro-Fenton setup with the H 2 O 2 electrolytic generator delivers an efficient and distributable wastewater treatment system. Our study provides a promising and alternative route for on-site H 2 O 2 production coupling the practical application process.
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高影响因子
ACS Catalysis
·
2023
·
IF 12.9
Yanfei Liu,Zhang Liu,Chengxiong Wang,Jie Xu,Jianping Ai,Xiao Liu,Aimin Zhang,Yunkun Zhao,Chun Du,Bin Shan
Supported Pt catalysts suffer from low reaction selectivity (<65% at 100% conversion) in the selective catalytic oxidation of ammonia (NH3-SCO) because of their intrinsic over-oxidation tendencies. Herein, a strategy based on facilitating byproduct NOx reduction to N2 is demonstrated at CuOx/PtCu catalysts, aiming to tackle the low selectivity challenge. This PtCu alloy sample with a CuOx-rich surface displays an N2 selectivity of 95%, while its turnover frequencies are the highest among reported supported Pt-based catalysts. The enhanced reaction activities and N2 selectivities are primarily attributed to the Pt-Cuδ+ dual-site synergies at the CuOx/PtCu interface, in which dual sites exhibit distinct NH3 adsorption, activation, and dehydrogenation behaviors. The Olat assisted internal selective catalytic reduction mechanism at CuOx/PtCu with N2O22– as the central intermediates is proposed. Density functional theory calculation and temperature-programmed surface reaction measurements show that the N–O bond in N2O22– tends to break simultaneously with the assistance of Ov in CuOx followed by the easy transition from N2O22– to N2, which serve as the origin of the high selectivity.
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高影响因子
JOURNAL OF CATALYSIS
·
2023
·
IF 7.3
Yayu Guan,Jiaying Yan,Yuyu Liu,Fanghua Ning,Jin Yi,Jiujun Zhang
Electrochemical CO 2 reduction reaction (eCO 2 RR) is considered an efficient approach to produce value-added chemicals and fuels. In this paper, a series of MOF-derived composite catalysts with coexisting In 2 O 3 and ZnO are fabricated using a simple process for eCO 2 RR to produce formate. The Zn-In-O/800 catalyst achieves a formate Faradaic efficiency (FE HCOO− ) of 94.25 % at −1.16 V vs. RHE, which can maintain over 89 % after 30 h in a stability test. The electrochemical evidence and density functional theory analysis show that the strong interface effect between In 2 O 3 and ZnO can enhance the CO 2 adsorption and activation, and promote the conversion of CO 2 to formate. In addition, the ZnO phase can protect In 2 O 3 , as the main active site, from being reduced to a certain extent for a long time under negative potential, which ensures the high stability of the composite catalyst.
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高影响因子
FOOD HYDROCOLLOIDS
·
2022
·
IF 11.504
Yilan Wu,Yan Li,Bin Li,Yangyang Zhang,Yuehan Wu,Shilin Liu
In this study, the effect of bacterial cellulose nanofibrils (BCNF) surface charge density on the emulsification capacity of gelatin (GLT)/BCNF mixtures was investigated. Emulsions with 50 v% oil phase were co-stabilized by GLT and BCNFs (surface charge densities varied from 0.34 to 1.16 mmol/g) at pH 7.0 (GLT and BCNFs were negatively charged) and pH 4.7 (electrostatic equilibrium point for all GLT/BCNF mixtures). At pH 7.0, as BCNF surface charge density increased, the oil-water interfacial tension was decreased. Thus, the emulsion droplet size was reduced from 14.24 to 13.51 μm when the BCNF surface charge density was improved from 0.34 to 1.16 mmol/g. Additionally, the emulsion stability was significantly improved by the addition of highly-charged BCNF due to the increased electrostatic repulsion between dispersed droplets. At pH 4.7, the highest level of attractive electrostatic interaction was observed for GLT and BCNF with a surface charge density of 1.16 mmol/g (BCNF 1.16). Thus, the GLT/BCNF 1.16 suspension exhibited the highest viscoelastic modulus. At pH 4.7, the stability of GLT/BCNFs co-stabilized emulsions was improved by increasing BCNF surface charge density due to the enhanced viscosity. The emulsions prepared with GLT and BCNFs with surface charge density higher than 0.66 mmol/g at pH 4.7 could keep stable without creaming for 30 d. Furthermore, the GLT/BCNF 1.16, with the most remarkable emulsion stabilizing capacity, was successfully applied to prepare high internal phase emulsions with a more stable and higher viscoelastic behavior. This study was meaningful for the regulation of emulsion stability and rheological property.
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