Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·123598
·
IF 7.5
Di Li,Huimin Zhu,Yuan Zhang,Shaofei Yang,Ruiyu Zhu,Jiaoe Dang,Fang Song,Jun Zhou
The escalating global energy crisis and environmental pollution has drawn increasing attention. As a green and sustainable alternative, photocatalytic H 2 O 2 synthesis has attracted widespread interest. In this study, we has designed a novel exciton-regulated photocatalyst (Bi@g-C 3 N 4 /ST-NS) by integrating bismuth-doped graphitic carbon nitride with porphyrin-based supramolecular nanostructures (ST-NS). The composite was synthesized through a sequential process involving solvothermal reaction, high-temperature calcination, and solution-phase self-assembly. We systematically investigated its crystal structure, photoelectronic properties, and the mechanistic basis of photocatalytic H 2 O 2 production. Characterization results confirmed the successful incorporation of Bi single atoms into the sixfold cavities of g-C 3 N 4 , forming a p-n heterojunction with ST-NS while preserving the crystallinity of the host matrix. The built-in interfacial electric field not only promoted efficient charge separation but also extended the visible-light absorption range and prolonged the carrier lifetime. Performance evaluations revealed that Bi@g-C 3 N 4 /ST-NS exhibited significantly enhanced H 2 O 2 generation activity compared to pristine Bi@g-C 3 N 4 , with optimal performance achieved at a 10:1 mass ratio. Under visible-light irradiation, the H 2 O 2 concentration reached 1134 μM in the reaction solution, representing a 2.5-fold improvement over Bi@g-C 3 N 4 . Mechanistic studies indicated that the heterojunction facilitated efficient intersystem crossing from singlet to triplet excitons. Rather than following the conventional superoxide radical (·O 2 - ) pathway, these triplet excitons activated ground-state oxygen to generate singlet oxygen ( 1 O 2 ) via resonance energy transfer. The subsequent highly selective two-electron reduction of 1 O 2 yielded H 2 O 2 , effectively circumventing the high-energy barrier steps associated with traditional pathways. This work thus presented a promising strategy for the rational design of high-efficiency photocatalytic systems through exciton regulation.
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BIOMASS & BIOENERGY
·
2026
·
IF 7
Jing Bai,Mengqi Wang,Yang Xiao,Xiangyu Cheng,Weiyu Chen,Haoran Wu,Chun Chang
A single-step removal of γ-carbinol from lignin β-O-4 linkages was reported. • Key parameters for γ-carbinol removal were systematically screened and optimized. • Ru/C system enabled efficient upgrading of monophenols from birch-derived bio-oil. • The selectivity and yield of 2,6-dimethoxy-4-ethylphenol reach 53.02% and 39.33%. • A promising route for lignin valorization was proposed. Development of efficient strategies for converting the C3 β-O-4 motif of lignin into a simplified C2 β-O-4 structure is of great significance, yet it remains a formidable challenge. Herein, we report the use of Ru/C as a catalyst to convert α-hydroxy-free C3 β-O-4 fragments into C2 β-O-4 fragments via a one-step strategy for the removal of the γ-carbinol group. A series of lignin-derived phenolic model compounds were selected to systematically investigate the effects of key reaction parameters, including temperature, reaction time, catalyst dosage, and substituent structure on the removal of the γ-carbinol group. On the basis of the obtained reaction rules and optimized parameters, the Ru/C-catalyzed system was successfully applied to the upgrading of monophenolic components in bio-oil obtained from the depolymerization of authentic birch lignin. Under optimized reaction conditions, 4-(3-hydroxypropyl)-2,6-dimethoxyphenol in the bio-oil achieved a conversion of 74.18%, affording the target product 2,6-dimethoxy-4-ethylphenol with a selectivity of 53.02% and a yield of 39.33%. This study provides a novel and efficient approach for the valorization of lignin-derived bio-oil, laying a solid foundation for the sustainable utilization of lignin resources. Download: Download high-res image (376KB) Download: Download full-size image
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ACS Applied Nano Materials
·
2026
·
IF 5.8
Yawen Qiao,Hao Pan,Mengyao Gao,Guanhua Jin,Qin Guo,Oleg Viktorovich Tolochko,Mirtemir Shodievich Kurbanov,Puguang Ji,Chengwei Zhang,Gongkai Wang
Silicon suboxide (SiOx, 0 < x < 2) is a promising anode material for lithium-ion (Li-ion) batteries due to its high theoretical capacity, yet the application of SiOx anodes is limited by their low electrical conductivity and drastic volume expansion. Although integrating SiOx nanoparticles with carbon materials can mitigate these issues, achieving both uniform dispersion of SiOx nanoparticles within the carbon matrix and structural stability remains a significant challenge when using only conventional mechanical mixing, surface coating, and sol–gel methods. Herein, a combined sol–gel and soft-templating method is employed to encapsulate mesoporous SiOx@carbon (SiOx@C) spheres (m-SiOx@CS) within a three-dimensionally ordered macroporous carbon (3DOMC) framework, yielding a nanocomposite (3DOMC/m-SiOx@CS). In m-SiOx@CS, the uniformly dispersed SiOx nanoparticles and carbon provide abundant conductive interfaces to enhance reaction kinetics, and the mesoporous structure enables rapid mass transfer. Meanwhile, 3DOMC provides a stable skeleton to ensure the structural stability of the electrode during cycling. As a result, the 3DOMC/m-SiOx@CS electrode exhibits excellent electrochemical performance and cycling stability, maintaining a high reversible capacity of 488.1 mAh g–1 after 2000 cycles at 1 A g–1. Furthermore, the assembled 3DOMC/m-SiOx@CS||LiFePO4 Li-ion full batteries can maintain a high capacity of 82.5 mAh g–1 after 1000 cycles at 1 C. This study offers a broadly applicable structural design strategy for high-performance SiOx-based anodes.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Shuxin Zhang,Kun Liu,Shuyuan Yu,Zifeng Lin,Yu Xie,Yanbin Jiang,Longfu Wei,Changlin Yu
Traditional propylene oxide (PO) production processes consume large amounts of organic feedstock and release hazardous by-products. The synthesis of PO via the epoxidation of propylene using O 2 is an ideal route offering 100% atomic economy. However, achieving high selectivity and high efficiency under mild conditions remains a significant challenge. In this study, we have developed a visible-light-driven tandem reaction system combining a carbon- and oxygen-co-doped three-dimensional spherical indium sulfide (C,O-In 2 S 3 ) photocatalyst with titanium silicate molecular sieve (TS-1), thereby achieving the distinctly selective oxidation of propylene at ambient temperature. Assembled from ultra-thin nanosheets, the three-dimensional structure of C,O-In 2 S 3 provides abundant active sites and mass transfer space, with carbon‑oxygen co-doping narrowing the bandgap and enhancing visible light absorption. In a pure water system, the H 2 O 2 yield of C,O-In 2 S 3 reached 1450.40 μmol·g −1 ·h −1 , which is 17.8 times that of pristine In 2 S 3 . Utilizing the excellent compatibility of the methanol/water system, the photocatalytic generated H 2 O 2 was directly employed in the TS-1-catalysed epoxidation of propylene, achieving a PO yield of 2230.03 μmol·g −1 within 2 h with a selectivity of 99.1%. This work applies sulfide-based photocatalysts to a tandem reaction involving photocatalytic H 2 O 2 production and propylene epoxidation, providing a new strategy for the green, safe and efficient synthesis of PO.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Feng Jiang,Chenchen Li,Xiang Ling
Molybdenum (Mo) is a promising structural material for ultra-high temperature applications, but its catastrophic oxidative degradation remains a critical bottleneck. Conventional single-layer silicide coatings often fail prematurely due to either weak interfacial adhesion (spallation) or insufficient long-term structural stability (cracking). To overcome these limitations, a novel dual-layer composite coating was developed in this study. An inner Mo-Si diffusion layer (∼90 μm) was first fabricated by pack cementation process to ensure robust metallurgical bonding with the Mo substrate. Subsequently, an anti-oxidative outer layer (∼98 μm) containing MoSi 2 , boron and quartz was deposited using slurry sintering technique. Isothermal oxidation tests revealed that the composite coating exhibited excellent protective performance at 1500 °C in air, with only minimal mass loss of 0.178 mg/cm 2 after 9 h. Microstructural analysis demonstrated that bidirectional Si diffusion dynamically transformed the coating into a highly stable gradient structure of SiO 2 -Mo 5 Si 3 -MoSi 2 -Mo 5 Si 3 during high-temperature exposure. The superior oxidation resistance was attributed to a synergistic anti-oxidation mechanism: the inner layer physically anchored the coating to prevent spallation, while the outer layer continuously generated a B 2 O 3 -fluxed fluid borosilicate glass phase that effectively sealed microcracks and pores. This work provides an effective architectural design strategy for developing high-performance oxidation-resistant coatings on refractory metals in ultra-high temperature environments.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Wanlu Hua,Yifei Pu,Jie Xu,Baichuan Zhuang,Jing Zhang,Jifei Zhuo,Xiaoli Xie,Xin Tian,Xiangnan Chen,Tengfei Qu,Guo Li,Guangjun Gou
Heterointerface engineering has been widely proven effective for designing composite materials with high-efficiency microwave absorption (MA) capabilities. However, challenges persist in regulating the interface structures of MA materials at the microscale and nanoscale. In this study, a novel N/S-codoped multi-interfacial porous carbon composite (Fe 7 S 8 /Fe 2 S/Fe 3 C@C) is successfully prepared by chemical foaming and vulcanization. Concretely, when the carbonization and vulcanization temperature were both 600 °C, the mass ratio of carbonized sample to sulfur (carbon: sulfur) was 1:2 (PF-2), which exhibited exceptional electromagnetic wave attenuation properties. Notably, the composite achieved a minimum reflection loss ( RL min ) of −48.83 dB at 1.85 mm thickness, and an effective absorption bandwidth (EAB) value reaching 6 GHz (12–18 GHz) at 2 mm, while the proportion of paraffin wax was only 20 wt%. The significantly improved MA performance primarily originated from the synergistic effects between dielectric/magnetic heterostructures and heterointerfaces. In addition, PF-2 exhibits excellent antibacterial properties, with antibacterial rates against Escherichia coli and Staphylococcus aureus both exceeding 99.999 % under no light and 808 nm light conditions. Overall, this research provides a pathway through heterointerface engineering for designing a new generation of multifunctional electromagnetic wave absorbing materials.
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CARBON
·
2025
·
IF 11.6
Zhouyu Fang,Kaifa Du,Minghao Liu,Hao Shi,Lei Guo,Wenmiao Li,Wei Li,Huayi Yin,Bowen Deng,Di Chen,Dihua Wang
Red phosphorus (RP) is a promising anode material for sodium-ion batteries (SIBs) due to its high theoretical capacity and cost-effectiveness. However, its practical use is constrained by poor electronic conductivity and severe volume expansion during cycling. Herein, we introduce a new strategy to synthesize phosphorus/carbon (P/C) composites enriched with phosphorus-oxygen-carbon (P– O –C) bonds, achieved by high-energy ball milling of CO 2 -derived oxygen-rich electrolytic carbon (EC) with RP. This approach enhances the conductivity and structural stability of RP while effectively mitigating volume changes during charge-discharge cycles. Electrochemical evaluation reveals that the P/EC composite exhibits outstanding performance, maintaining a high capacity of 871.6 mAh g −1 after 200 cycles at 0.26 A g −1 with a retention rate of 88.6 %, and delivering 340.2 mAh g −1 after 2000 cycles at 2.6 A g −1 . This work demonstrates the potential of integrating CO 2 -derived EC with RP to create advanced anode materials with enhanced stability and high-rate capability, paving the way for next-generation SIBs.
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ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Yan Li,Chunrui Peng,Haoxiao Liang,Dongxing Zhang,Tao Wu,Qiuquan Guo,Junfeng Xiao,Peipei Jia,Jun Yang
Polytetrafluoroethylene (PTFE) is renowned for its exceptional chemical inertness and hydrophobicity. However, the high melt viscosity, low surface energy, and high cooling shrinkage of PTFE make it difficult to fabricate fine three-dimensional (3D) structures through photopolymerization molding. Meanwhile, due to the mechanical properties of PTFE, such as low hardness and low elastic modulus, the wear resistance of its structure is usually poor. In this study, we propose an effective strategy to enhance both wear resistance and superhydrophobicity in 3D-printed PTFE/C structures by controlling the carbon residue during the sintering process. To achieve the refined structure of PTFE, a photo-cross-linkable PTFE/PEGDA ink was developed, in which PEGDA acts as a photocurable scaffold to enable high-resolution DLP printing of PTFE nanoparticles. Furthermore, inspired by the microarray of cicada wings, a needle-repellent structure with a water contact angle (CA) exceeding 150° was printed using a PTFE-based ink. Based on the above structure, the carbon residue in PTFE/PEGDA was controlled by the sintering process to further enhance the wear resistance and superhydrophobicity of the structure. These results indicated that the sintered needle-repellent structure can still maintain excellent hydrophobic properties with 1000-grit sandpaper under a load of 100 g for 20 cycles. The performance conflict between superhydrophobicity and wear resistance of the PTFE/C structure has been effectively alleviated through the printed needle-repellent structure and controlled carbon residue. Furthermore, even after 2 weeks of immersion in strongly acidic and alkaline environments, the structure morphology remains stable. These excellent features of the needle-repellent structure make it applicable to a wide range of applications, such as droplet manipulation, oil–water separation, and fog harvesting.
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PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Aojie Li,Qiao Jiang,Tianyi Suo,Liang Chen,Hong Yin,Junlin Huang,Wen-Yuan Xu,Yuan Li,Binhong He,Wei Wang
Non-noble metal single-atom catalysts with high catalytic activity have garnered considerable attention from researchers in recent years. Yet, their synthesis is affected by various factors, making process optimization a challenging and systematic task. In this study, single-atom Fe–N–C porous hollow microspheres were successfully synthesized via ultrasonic spray pyrolysis, with machine learning employed to optimize the fabrication process. Machine learning models, trained on pre-experimental data, identified the key factors influencing material structure and oxygen reduction reaction (ORR) performance. The resulting Fe–N–C (600–900) material demonstrated excellent ORR activity with a half-wave potential of 0.865 V, along with high stability and methanol tolerance. When applied to traditional liquid zinc–air batteries (ZABs), it achieved an open-circuit voltage of 1.56 V and a maximum power density of 313.4 mW cm–2, with a discharge capacity of 806.5 mAh gZn–1 at 10 mA cm–2, outperforming commercial noble metal catalysts. This work offers valuable insights into the application of machine learning for optimizing ORR catalysts and designing high-performance materials for energy conversion devices.
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PEST MANAGEMENT SCIENCE
·
2025
·
IF 3.8
Wei Zhao,Di Zou,ZhengYang Wang,GuiQiang Wang,HongBo Jiang,Guy Smagghe,JinJun Wang,DanDan Wei
BACKGROUND Bactrocera dorsalis (Diptera: Tephritidae) is a highly adaptable invasive pest that causes significant economic losses. Long-term chemical control strategies have led to high levels of insecticide resistance and severe environmental risks. C-type lectins (CTLs), key pattern recognition receptors in insect innate immunity, are named for their calcium-dependent carbohydrate recognition domains (CRDs) and they play a critical role in detecting and binding to foreign pathogens. This study aims to identify B. dorsalis CTLs (BdCTLs) and investigate their roles in pathogen defense. RESULTS A total of 42 BdCTL genes were identified. Based on the number of CRDs, 36 genes were classified into the S subfamily, while the remaining six were assigned to the X subfamily. Spatio-temporal expression analysis by qPCR revealed that BdCTL genes were expressed throughout all developmental stages with a higher expression observed in the midgut, Malpighian tubules, and fat body. The expression levels of BdCTL-S4 , BdCTL-S12 , and BdCTL-S31 were significantly upregulated under the infection of the entomopathogenic fungus Beauveria bassiana . Notably, BdCTL-S12 also exhibited upregulated expression patterns in response to four different pathogens bacteria with sustained expression over time. Using RNA interference (RNAi), we successfully knocked down BdCTL-S12 expression, achieving a silencing efficiency of 68%. Survival assays demonstrated a 10–30% reduction in the survival rate of B. dorsalis after pathogen infection following dsRNA injection compared to the control group. Further in vitro experiments confirmed that BdCTL-S12 can agglutinate and bind to pathogens in a calcium-dependent manner. This binding was competitively inhibited by polysaccharides, underscoring a key functional mechanism of BdCTL-S12 in pathogen recognition. CONCLUSION In summary, we identified 42 BdCTLs and demonstrated that BdCTL-S12 is critical for pathogen recognition and immune defense in B. dorsalis . These results advance our understanding of the molecular mechanisms underlying B. dorsalis immunity. Specifically, elucidating the role of CTLs may facilitate the development of microbial-based biological control strategies (e.g., entomopathogenic fungi or bacteria) against this invasive pest. Additionally, RNAi-mediated knockdown of CTL-encoding genes could weaken the immune system of Bactrocera flies, increasing their susceptibility to microbial infections and thereby enhancing the effectiveness of biological control. © 2025 Society of Chemical Industry.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Jinfeng Jiang,Wei Xia,Yu Feng,Weihua Gu,Weiwei Wang,Cao Wu,Wenbo Du,Yong Yang,Hailiang Deng,Yusuke Yamauchi
Ceramic fibrous aerogels are promising lightweight thermal insulators, yet concurrently enhancing mechanical robustness, acoustic attenuation and electromagnetic (EM) wave absorption remains challenging because these functions demand conflicting architectures. Here we introduce a phase-transition-driven multiphase evolution strategy in Si Zr crystals combined with a one-step thermally induced core–shell conversion. This approach enables coordinated regulation of the chemical states, dislocation density and oxygen-vacancy concentration in Zr Si ceramic fibers, and forms a heterogeneous “oxide shell (ZrO 2 /SiO 2 )-carbide core (SiC/ZrC)” within each fiber. The resulting interfacial enrichment and improved impedance matching synergistically strengthen the aerogel and boost EM dissipation. The obtained ZSCO fibrous aerogels deliver a compressive stress up to 255.73 kPa, a minimum reflection loss of −21.87 dB and an average sound absorption coefficient of 0.61. Mechanistic analysis reveals a thermally driven, multimodal regulation pathway for tailoring multifunctional ceramic fibers, offering a scalable route to aerogels for extreme environments.
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International Journal of Minerals Metallurgy and Materials
·
2026
·Vol. 33
·期 2
·716-726
·
IF 8.8
Yu Guoqing,Xie Mingzhuang,Zheng Zhihao,Wu Zegang,Wang Yi,Zhao Hongliang,Liu Fengqin
Waste graphitization cathode carbon blocks are a type of hazardous solid waste generated during the aluminum electrolysis process, and their proper disposal is a key step in the resource utilization of discarded graphite. This study utilizes the porous “defect advantage” of a cathode carbon block matrix to prepare silicon-doped and asphalt-coated detoxified and purified waste graphitization cathode carbon blocks for use as high-performance silicon/carbon composite anode materials. The results show that the uniformly silicon-doped silicon/carbon composite material features a unique amorphous carbon-encapsulated “locked silicon” structure, which effectively addresses issues such as cathode volume expansion, excessive growth of the solid electrolyte interphase (SEI) film, and poor electrical contact between active materials. Consequently, electrochemical performance is enhanced. After assembly in a half-cell, the PSCC/10%Si@C (purified waste graphitization cathode carbon/10%Si@C) material exhibits optimal electrochemical stability, with an initial charging specific capacity of 514.5 mAh/g at 0.1 C (1 C = 170 mA/g) and a capacity retention rate of 95.1% after 100 cycles. At a charge rate of 2.0 C, a specific capacity of 216.9 mAh/g is achieved. This technology provides a new pathway for the economical and high-value utilization of waste cathode carbon blocks and the development of low-cost, high-performance anode materials.
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危险品化学品经营许可证（带存储）