Materials Science and Engineering B-Advanced Functional Solid-State Materials
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2025
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IF 4.6
Wenyu Li,Yajun Wang,Qiang Gan,Zhengliang Deng,Junhan Gao
Developing efficient oxidizers is critical for advancing nano thermites. Titanium oxyfluoride (TiOF 2 ) with oxygen/fluorine dual-active centers is innovatively employed as an oxidizer in Al/TiOF 2 composites prepared via physical mixing. Structural and morphology characterization confirms uniform interfacial contact while preserving component stability. The system demonstrates exceptional reactivity: onset and peak reaction temperatures (409.4°C, 470.0°C) are reduced by 139.1°C and 130.7°C, respectively, versus Al/TiO 2 , with activation energy lowered to 84.35 kJ·mol −1 . Synergistic F–O interactions impair reaction barriers, yielding 3692.2J·g −1 heat release (120 % increase over Al/TiO 2 ). Combustion tests reveal vigorous ignition under low energy input, rapid flame propagation, and two-stage spark ejection. This work reveals the activation mechanism of oxyfluoride as an oxidizer for thermites: fluorine enhances the reaction kinetics through an interfacial modification effect, while oxygen guarantees the energy density of the system. The synergy of the two elements realizes the optimization and regulation of combustion performance.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
·
IF 8.5
Qingxiang Wang,Haiying Yang,Jing Cheng,Kai Zhan,Haodong Wang,Yonggui Wang,Dong Wang,Wanli Cheng,Guangping Han
Efficient separation of water-in-oil (W/O) emulsions is essential for wastewater treatment, yet conventional electrospun membranes often suffer from poor mechanical properties, large inter-fiber pores and structural instability. Here, we propose a coaxial electrospinning strategy that combines a PVDF/CNC core with a PDMS shell to construct a hierarchical superhydrophobic membrane. The incorporation of CNC induces nonsolvent-driven microphase separation during electrospinning, generating spindle- and nanosphere-like surface structures while reinforcing the fibrous network. Meanwhile, the PDMS shell contributes to inter-fiber connectivity and enhances surface hydrophobicity. These synergistic effects result in an interlocked porous architecture that supports gravity-driven separation of W/O emulsions. At 4 wt% CNC, the membrane achieves a water contact angle of 158°, an average pore size of 1.93 μm and a flux of 2890 L m −2 h −1 , while maintaining over 94 % separation efficiency over 20 cycles. This work provides a sustainable strategy for tailoring structures for effective W/O emulsion separation.
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PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2025
·
IF 2.9
Jianfang Lu,Chaojie Fan,Yuanyuan Huang,Pengfei Li,Fuhou Lei,Haitang Xu,Caiyun Han,Kechun Li,Yu Feng
Tetracycline (TC) presents significant risks to the human health and has the potential to cause substantial harm to ecological systems due to its excessive utilization. However, carbon-based materials have attracted considerable interest for their efficacy in removing TC from aquatic environments. In this study, phosphorus and oxygen co-doped pinecone biochar (po-PBC) with a three-dimensional (3D) hierarchical porous architecture was synthesized and employed for the adsorption of TC. To elucidate the adsorption characteristics of po-PBC for TC, four adsorption kinetic models and four isotherm models were utilized. The adsorption data were best described by the pseudo-second-order kinetics model, as evidenced by an R2 value of 0.9975. Furthermore, the removal efficiency of TC using po-PBC increased to 81.67% at 313 K for an initial concentration of 150 mg L−1 in comparison to unmodified PBC. The observed increase can be attributed to the co-doping of phosphorus and oxygen heteroatoms, along with the presence of a three-dimensional hierarchical porous structure. The Langmuir isotherm model, exhibiting R2 values between 0.9830 and 0.9926, accurately characterized various equilibrium isotherms. The maximum adsorption capacities for TC at temperatures of 298 K, 308 K, and 318 K were determined to be 1137.09 mg g−1, 1379.23 mg g−1, and 1401.77 mg g−1, respectively. The relatively low average free energies, ranging from 0.11 to 0.63 kJ mol−1, corroborated the physical nature of the adsorption process. Thermodynamic parameters (ΔH > 0, ΔG < 0, and ΔS > 0) further indicated that the adsorption process was spontaneous and endothermic. Moreover, the adsorption capacity of TC was retained at 88.12% after five successive adsorption-regeneration cycles. Therefore, po-PBC demonstrates significant potential for the removal of TC from wastewater. Additionally, it offers novel insights into the reduction, stabilization, and resource utilization of pinecones.
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Frontiers in Genetics
·
2025
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IF 2.8
Minglu Zhang,Jianbo He,Rao Fu,Guojian Bao,Yijun Lu,Zechuan Zhang,Jiawu Yan,Jialu Ding,Fei Yang,Beicheng Sun
Introduction: Small nucleolar RNA (snoRNA) mediates RNA modifications, including 2′-O-methylation (Nm) and pseudouridine (Ψ), which has been proven to impact tumor progression. However, the role of snoRNA in the epigenetics of tumors remains poorly understood due to the lack of sufficiently effective experimental methods to identify snoRNA targets. Here, we identified SNORD13H, a C/D box snoRNA, as being downregulated in hepatocellular carcinoma (HCC), and its low expression was associated with HCC development.Methods: To elucidate specific roles of SNORD13H in HCC, we used a comprehensive array of methodologies, including flow cytometry, xenograft mouse model, reverse transcription at low dNTP concentration followed by PCR (RTL-P) assay, and surface sensing of translation (SUnSET) assay.Results: In this study, we first demonstrated that reduced SNORD13H serves as a biomarker for HCC, facilitating cellular proliferation. SNORD13H mediates 2′-O-methylations of 18S rRNA and RAS mRNA, thereby enhancing translation efficiency and regulating RAS protein levels in HCC. The diminution of SNORD13H activates the RAS pathway, contributing to the progression of HCC.Discussion: Our study establishes SNORD13H as a dual-function regulator in HCC progression. Furthermore, our findings indicate that SNORD13H is detectable in plasma, highlighting its potential utility in tumor screening.
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CHEMICAL ENGINEERING JOURNAL
·
2025
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IF 13.2
Haidong Yu,Zhiqiang Hou,Longchao Zhuo,Xijun Liu,Yabin Zhang
Microplastic accumulation in water bodies is posing a serious threat to public health. Their chemical inertness impairs the effectiveness of current micro/nano-material-based remediation strategies. Especially in urban drinking water systems, microplastics constantly released and accumulated together with the complexity of pipeline networks challenges the recyclability and long-term stability of remediation materials and technology. To address this, Cu-single-atom magnetic Janus microparticles (CuMJMs) with flower-like crown morphology are engineered meticulously via a step-by-step strategy involving solvothermal growth and chemical deposition. The resulting CuMJMs feature a distinct Janus architecture composed of BiOI nanosheets and Fe 3 O 4 nanoparticles, thereby delivering synergistic magnetic and photocatalytic functionalities. When subjected to a rotating magnetic field, CuMJMs are able to locomote collectively and recover rapidly in confined microenvironments. The incorporation of atomically dispersed Cu single atom not only enhances the number of active sites, but also promotes the separation and migration of photogenerated charge carriers. Such abilities enable CuMJMs to degrade polyethylene (PE) efficiently, achieving a weight loss rate of 53.7 % beyond previous reports. This performance improvement is ascribed to singlet oxygen generation boosted by the Cu single atoms to facilitate oxidative degradation pathways, as supported by electron paramagnetic resonance and active species trapping test. While used in real water matrices, CuMJMs maintain both catalytic activity and magnetic responsiveness, underscoring their robustness and practical potential. This work establishes a new paradigm to active microplastic remediation, merging atomic-level catalytic precision with collective particle behavior to enable scalable and efficient environmental cleanup.
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Foods
·
2025
·Vol. 14
·期 18
·3192
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IF 5.1
Xiaomei Chen,Panpan Wu,Shuwei Wang,Jie Sun,Haitao Chen
In this study, we systematically characterize the volatile and non-volatile flavor profiles of coffee beans. Sensory evaluation demonstrated unique aromatic profiles for each coffee, with Colombia excelling in chocolate and nutty notes, while Bench Maji exhibited pronounced fruity characteristics. Yirgacheffe had a prominent roasted aroma, and Baoshan stood out for its stronger woody and caramel notes. The analysis employed solvent-assisted flavor evaporation (SAFE), gas chromatography–mass spectrometry/olfactometry (GC-MS/O), and high-performance liquid chromatography (HPLC). A total of 85 aroma compounds were identified, with furans, ketones, and pyrazines being the predominant contributors to roasted, nutty, and caramel aromas. Key aroma-active compounds, including furfural, guaiacol, and furaneol, exhibited the highest flavor dilution (FD) factors (up to 2187) and odor activity values, highlighting their pivotal roles in coffee aroma, with 4-vinyl-2-methoxyphenol (OAV = 761 in GL) and furaneol (OAV = 250 in BS) being particularly influential. Recombination and omission experiments validated the significance of these compounds. Non-volatile analysis revealed distinct differences in organic acids and chlorogenic acid content, with Colombia samples showing higher quinic acid levels, likely due to roasting-induced degradation. These findings provide a theoretical basis for understanding coffee flavor diversity and offer insights for quality assessment and origin identification.
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INORGANIC CHEMISTRY
·
2025
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IF 4.7
Hongjiao Song,Binbin Hu,Yulong Zhou,Ye Wu,Jibao Wu,Hongsong Tian,Qifeng Liang,Yongsheng Tan,Zebo Fang,Lirui Yu,Huili Li,Shunhang Wei
Interface engineering has been proven to be a promising strategy for regulating carrier transport. Herein, an interfacial Mo–O–W bond was constructed between Bi2MoO6 nanospheres and WO3 quantum dots. It served as a fast transfer channel for interfacial photogenerated carriers, resulting in the formation of a direct Z-scheme heterojunction. The Z-scheme heterojunction not only maximized the redox ability but also exhibited enhanced separation and transfer efficiency of photogenerated carriers. Thereby, it exhibited excellent degradation activity and reusability for different simulated pollutants (levofloxacin, rhodamine B, and methylene blue) under LED irradiation, and its photocatalytic rate is approximately doubled. Unexpectedly, a considerable amount of H2O2 was formed via a direct one-step two-electron oxygen reduction reaction process, which played a significant role in the photodegradation process, even surpassing the role of electrons/holes as active species. Furthermore, the photodegradation pathway of levofloxacin by the Z-scheme heterojunction was analyzed. This study could provide insights into establishing an interfacial chemical bond, modulating charge transfer, and the photodegradation mechanism.
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ChemCatChem
·
2025
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IF 3.9
Hengyu Zhao,Jing Zhao,Xue Li,Bate Nasen,Yang Wu,Xinlong Wang,Jinxiong Wu,Yaya Wang
The catalytic reduction of 4-nitrophenol (4-NP), a persistent environmental pollutant faces dual challenges reliance on noble metals and inefficient utilization of hydrogen radicals (H*). Meanwhile, nickel-containing sludge generated by the electroplating industry, classified as hazardous waste has long posed significant disposal conundrums. Herein, we developed a noble metal-free pyroxene-type CaNi(Si 2 O 6 ) catalyst, synthesized from electroplating sludge, that simultaneously addresses these challenges through dynamically reconstructed Ni–O–Ca interface with oxygen vacancies and interfacial electron transfer channels. Ni@Ca-195/20 establishes a self-sustaining catalytic system, achieving a remarkable conversion of 96.8% with 0.1 mM NaBH 4 and 0.05 mg catalyst, while maintaining stability over 31 cycles in low concentration regimes. Integrated characterization combined with catalytic performance evaluation reveals an interfacial electron transfer mechanism: the engineered interface enables in situ reduction of Ni 2+ generates metallic electron-deficient Ni δ+ species, enhancing 4-NP − and BH 4 − adsorption through dual-site coordination. Oxygen vacancies accelerate BH 4 − hydrolysis, while electron transfer channels sustain H* flux via Ca 2+ modulated charge equilibration. This work establishes a waste-to-functionality paradigm for designing defect-engineered catalysts while advancing sustainable remediation of nitroaromatic pollutants. Graphical The Ni-plating sludge was converted into a Ni@Ca-195/20 catalyst with abundant oxygen vacancies and Ni–O–Ca heterointerfaces via the solvothermal method, which was used to efficiently catalyze the hydrogenation reduction of 4-nitrophenol.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Xusen Li,Bingxin Sun,Liwei Lin,Yuanzhe Piao,Guowang Diao,Wang Zhang
This paper proposes a simple and rapid microwave-assisted phosphorus-oxygen doped porous carbon (P/O-PC) preparation strategy is proposed using potassium citrate, Phytic acid (PA), and ethanol under air atmosphere. PA can be used as both a phosphorus source and a microwave absorbing agent. The P/O-PC500–0.75 has a large specific surface area of 905 cm 2 /g. P/O doping introduces defects into the carbon structure, which enhances the capacitance of the porous carbon. The P/O-PC500–0.75 demonstrates excellent capacitance values of 330 F/g and 389.4 F/g in 6.0 M KOH and 1.0 M H 2 SO 4 , respectively (1 A/g). In addition, the symmetrical supercapacitors assembled with the P/O-PC500–0.75 exhibit good electrochemical stability over 5000 cycles at 5 A/g, with a capacitance loss of only 3.6%. This microwave-assisted strategy offers simplicity in operation and low energy consumption, providing a new and efficient pathway to prepare carbon materials in a fast and simple manner.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-12
·
IF 15.7
Chen Tiantian,Zhang Ganbing,Sun Hongwei,Hua Yetong,Yang Shu,Zhou Dandan,Di Haoxin,Xiong Yiling,Hou Shenghuai,Xu Hui,Zhang Lizhi
The microenvironment regulation of Fe-N 4 single atom catalysts (SACs) critically governs peroxymonosulfate (PMS) activation. Although conventional heteroatom substitution in primary coordination enhances activity, it disrupts Fe-N 4 symmetry and compromises stability. Herein, we propose oxygen doping in the secondary coordination shell to construct Fe-N 4 -C 6 O 2 SAC, which amplifies the localized electric field while preserving the pristine coordination symmetry, thus trading off its activity and stability. This approach suppresses Fe-N bond structural deformation (bond amplitude reduced from 0.875–3.175 Å to 0.925–2.975 Å) during PMS activation by lowering Fe center electron density to strengthen Fe-N bond, achieving extended catalytic durability (>240 h). Simultaneously, the weakened coordination field lowers the Fe=O σ* orbital energy, promoting electrophilic σ-attack of high-valent iron-oxo towards bisphenol A, and increasing its degradation rate by 41.6-fold. This work demonstrates secondary coordination engineering as a viable strategy to resolve the activity-stability trade-off in SAC design, offering promising perspectives for developing environmental catalysts.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Zhi-Yuan Zheng,Zhi-Feng Jiao,Ji-Xiao Zhao,Xin-Chao Liu,Cai-Dong Song,Jia-Hang Li,Xiang-Yun Guo
In the hydrogenation of polyfunctional compounds, achieving high selectivity for specific functional groups remains challenging. Herein we report that SiC quantum dots (QDs) can selectively adsorb C = O in cinnamaldehyde, significantly increasing the activity and selectivity of Pt/SiC for hydrogenating cinnamaldehyde to cinnamyl alcohol. A 10 wt% QDs-modified Pt/SiC catalyst showed a turnover frequency 3.5 times higher than Pt/SiC under mild conditions. Further studies reveal that the defect-rich surface of SiC QDs facilitates the adsorption of C = O bond in cinnamaldehyde and enhances the spillover of active hydrogen from Pt to SiC QDs. During the catalysis process, Pt is responsible for the generation of reactive hydrogen species while the QDs undertake the activation of C = O bond, and the hydrogen species react with cinnamaldehyde via spillover. This work demonstrates the promise of SiC QDs in heterogeneous catalysis and provides a reference for designing novel hydrogenation catalysts.
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Nano-Micro Letters
·
2025
·Vol. 17
·期 1
·1-14
·
IF 36.3
Zhong Yihong,Yuan Guotao,Bao Dequan,Tao Yi,Gao Zhenqiu,Zhao Wei,Li Shuo,Yang Yuting,Zhang Pingping,Zhang Hao,Sun Xuhui
The heteroatom atomically doping strategy was reported to construct highly
efficient sites on metal oxides for the detection of low-concentration gas.
The atomically dispersed Sn atoms were intentionally incorporated into the Fe 2 O 3
lattice during the oxidative annealing of Fe-based metal organic framework,
leading to specific Sn–O–Fe sites, porous structures, and abundant oxygen
vacancies.
The optimized Sn-Fe 2 O 3 exhibited exceptional sensing performance for NO 2
detection: ultra-high sensitivity ( Rg / Ra =2646.6 to 1 ppm NO 2 ), ultra-low limit of
detection (10 ppb), and high selectivity.
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