Advanced Composites and Hybrid Materials
·
2026
·
IF 15.5
Yang Cao,Luo Jialiang,Wang Yue,Xue Yiqing,Liu Guigao,Lu Zhehong,Wang Suwei,Jiang Wei
Rational microstructure design and compositional regulation have emerged as effective pathways to enhance electromagnetic wave (EMW) absorption, However, simultaneously achieving strong absorption, broad bandwidth, thin thickness and low filler loading remains challenging. Herein, three-dimensional hierarchical heterostructures comprising amorphous carbon-wrapped magnetite supported on flower-like reduced graphene oxide (Fe₃O₄@C/FRGO) was constructed through spray-drying assembly, spatially confined solvothermal crystallization, and defect-modulated carbonization. By tailoring the reduction degree of FRGO and tuning ferrite composition through thermal treatment, the dielectric-magnetic properties and interfacial interactions are precisely regulated. With merely ≈ 3.26 wt% incorporation of FRGO, the optimized composite exhibits a minimum reflection loss (RL min ) of -66.29 dB at 1.94 mm (20 wt% filler) and a broad effective absorption bandwidth (EAB) of 6.60 GHz (11.30–17.90 GHz) at 2.73 mm (30 wt% filler). This exceptional performance is attributed to the engineered heterointerfaces that facilitate multi-path energy dissipation via magneto–dielectric coupling optimized impedance matching, intensive interfacial polarization from abundant hierarchical architectures and the flower-like structure induced multiple scatterings. This study highlights the pivotal role of interfacial engineering in heterostructured absorbers and offers a design paradigm for high-performance EMW-absorbing materials through coordinated component–structure modulation. Graphical abstract The alternative text for this image may have been generated using AI.
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INORGANIC CHEMISTRY
·
2026
·Vol. 65
·期 29
·16879-16886
·
IF 4.6
Wu Jing,Wang Ruonan,Lin Haifeng,Xing Jun,Wang Lei,Xu Jixiang
In this work, a novel ternary heterojunction consisting
of Zn vacancy-rich
zinc oxide (Zn 1– x O), a zeolitic
imidazolate framework-8 (ZIF-8), and cobalt phthalocyanine (CoPc)
was fabricated for photocatalytic N 2 fixation. The Zn 1– x O/ZIF-8 composite with bridged O–Zn–N
bonding was synthesized via in situ growth of ZIF-8 on Zn 1– x O, and it possessed a large surface area favorable
for N 2 adsorption. The incorporation of CoPc with dispersed
Co–N 4 (II) sites enhanced light harvesting and N 2 activation. Zn vacancies and coupled type II/Z-scheme charge
transfer pathways in the heterojunction accelerated the separation
of photogenerated charge carriers. As a result, the optimized catalyst
exhibited superior and stable photocatalytic N 2 reduction
performance via an alternating pathway in water, with an NH 4 + production rate of 65.2 μmol g –1 h –1 , which is 17.0 times higher than that of ZnO.
This study develops a novel ZnO-based heterojunction that simultaneously
optimizes multiple key factors for efficient photocatalytic N 2 fixation.
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高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Peipei Wang,Guozheng Lv,Xiang Ji,Sheng Zhang,Yuhang Bai,Huan Luo,Yuhao Wu,Xing Zhao,Zhaoqi Hou,Peizhong Feng,Xuanru Ren
To reduce the oxidation damage during the initial active oxidation stage of ZrB 2 -SiC coating, this paper employed a slurry-brushing method to prepare a self-healing Zr-Si-B-O biomimetic glass film on the surface of the ZrB 2 -SiC coating. Furthermore, the oxidation resistance behavior of biomimetic glass films with varying ZrO 2 contents was investigated. Experimental results indicate that the Zr-Si-B-O biomimetic glass film can significantly reduce the oxidation weight gain of ZrB 2 -SiC coating. The biomimetic glass film sample with 70 wt% ZrO 2 exhibits the best oxidation protection effect. After oxidation treatment in the temperature range of 600-1600 °C, the weight gain is only 0.081 × 10 −2 g cm −2 , which is 95.35% lower than that of the sample without the biomimetic glass film; after oxidation at 1700 °C, the final protection efficiency and average carbon loss rate reach the optimal values of 99.97% and 0.34 × 10 −6 g cm −2 s −1 , respectively, and the average oxygen permeability is only 0.35%. The presence of Zr-Si-B-O biomimetic glass film can significantly reduce the oxidation activity and improve the oxidation resistance of the coating. This is attributed to the pre-introduction of a flowable and self-healing glass on the coating surface, which prevented the intense oxidation of the coating at the initial stage.
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Journal of Materials Chemistry A
·
2026
·
IF 9.2
Xin Li,Zhongya Jia,Yi Wang,Kuo Liu,Xi Li,Tao Qi
The development of electrocatalysts that simultaneously exhibit high activity and robust stability for the oxygen evolution reaction (OER) is critical to advancing proton exchange membrane water electrolysis (PEMWE). In this work, Mn-doped RuO2 is composited with acid-resistant and highly conductive Ti4O7 via a simple molten salt method, yielding a Mn-RuO2/Ti4O7 hybrid electrocatalyst. Electrochemical measurements reveal that Mn-RuO2/Ti4O7 achieves a low overpotential of 194 mV at 10 mA cm⁻² and maintains stable operation for over 220 h at this current density. In situ spectroscopic analysis and computational studies further indicate that Mn doping modulates the electronic interplay between RuO2 and Ti4O7, which not only suppresses over-oxidation of Ru at high potentials but also promotes the deprotonation kinetics of reaction intermediates, thereby significantly enhancing the overall catalytic performance. This work offers an effective strategy for balancing activity and stability in acidic OER electrocatalys.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Dingren Ma,Feng Yuan,Yongquan He,Haiying Yu,Jing Cao,Zhiyao Li,Dehua Xia
Catalytic ozone decomposition offers a promising approach for controlling ground-level ozone (O 3 ), but conventional Co-based catalysts suffer from poor performance due to nanoparticle agglomeration and limited electronic tunability. This study addresses these limitations by leveraging electronic metal-support interaction (EMSI) to engineer a Co-based catalyst (Cox@SBA-UC) anchored via Si–O–Co bonding on a mesoporous SBA-UC carrier. We demonstrate that the Si–O–Co EMSI structure enhances Co dispersion, stabilizes low-valence Co 2+ species, and optimizes electronic properties by upshifting the d -band center. The optimized Co2@SBA-UC catalyst achieves exceptional O 3 decomposition efficiency (92% conversion), outperforming control catalysts and exhibiting robust humidity resistance. Mechanistic insights reveal strengthened O 3 adsorption and facilitated decomposition into surface oxygen intermediates (*O and *O 2 ), while reversible deactivation caused by *O 2 accumulation is efficiently mitigated through thermal regeneration under an inert atmosphere. This work provides a sustainable strategy for catalytic ozone decomposition by simultaneously maximizing active site density and intrinsic activity, advancing environmental remediation technologies for clean air applications.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Xuefeng Sha,Xianyin Song,Qiwei Shangguan,Yawei Lv,Fan Zeng,Xingang Zhang,Xueli Wu,Minghao Yu,Changzhong Jiang
MXene has emerged as a promising alternative to carbon-based capacitor materials since its inception, however, the current practical implementation still faces dual challenges: environmentally hazardous, time-consuming synthesis procedures and intrinsically low-concentration pseudocapacitive active sites. Herein, a short-duration, eco-friendly and high-efficiency double fluoride salt hydrothermal strategy was proposed to fabricate Ti 3 C 2 MXene with unparalleled electrochemical properties. A comprehensive and good balance, including rapid MAX phase etching, just-right titanium terminal water oxidation, and ammonia reduction activation, is achieved via a one-step NH 4 HF 2 hydrothermal reaction at 160 °C for merely 1 h (TOR-MXene). It drastically outperforms conventional HF acid etching at 60 °C for 48 h (P-MXene). Systematic experimental characterizations (HRTEM, SAXS, XPS, EXAFS, EPR and in-situ XRD, in-situ Raman) and DFT calculations consistently reveal that instead of the generally believed pore expansion, the abundant highly-reduced titanium dioxide nanoclusters anchored on the surface of MXene exhibit substantial pseudocapacitive activation, accompanied by the threshold Bader charge of Ti atoms exceeding 10.5 |e|. Consequently, the prepared TOR-MXene delivers a remarkable specific capacitance of 446.1 F g −1 even at the ultrahigh current density of 30 A g −1 , a sixfold improvement over the P-MXene of 74.8 F g −1 . Moreover, the TOR-MXene electrode displays around 91.2% capacitance retention over 50,000 cycles, showing an extremely high cycling stability. This strategy establishes atomic-level design principles for MXene-based energy storage, advancing efficient synthesis and performance optimization.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Zihao Wei,Qian Wu,Shiyu Fang,Xiang Zou,Ran Yu,Jiashun Cao,Lianghu Su,Weijing Liu,Song Cheng,Jingyang Luo
Digestate-derived biochar (BC) and an FeCl 3 /KOH-modified biochar (FKBC) were evaluated for ciprofloxacin (CIP) removal from nutrient-rich wastewater. FeCl 3 /KOH modification increased the specific surface area from 76.3 to 176.1 m 2 /g and introduced abundant oxygen-containing functional groups with dispersed Fe O coordination sites. Consequently, FKBC exhibited a Langmuir adsorption capacity of 117.93 mg/g, representing a 91.1% enhancement over pristine BC. Adsorption kinetics of FKBC were well described by the pseudo-second-order model (R 2 ≈ 0.99), with higher rate constants and initial adsorption rates, indicating accelerated chemisorption. FKBC further enabled simultaneous removal of ammonium and phosphate (∼60% at 20–120 mg/L). Adsorption was pH-dependent, favoring acidic conditions. XPS/FTIR analyses combined with density functional theory (DFT) calculations revealed that CIP adsorption is primarily governed by inner-sphere Fe O coordination and carboxylate complexation, with carbonyl anchoring and π-π interactions contributing at higher surface coverage. Stable Fe 2p features before and after adsorption indicate reversible surface coordination without alteration of iron chemical states, supporting low iron-leaching risk. A ranking efficiency product (REP) analysis yielded an overall sustainability score of 85%, highlighting FKBC as an efficient and sustainable adsorbent for antibiotic remediation and resource-oriented digestate valorization.
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CHEMISTRY & BIODIVERSITY
·
2026
·Vol. 23
·期 2
·e01698
·
IF 2.9
Zhongyi Chen,Fengkun Xiao,Chunhao Yang,Zhaoxiang Yang,Liping Qu,Feifei Wang
The cosmetic application of arbutin (AR) has recently been challenged due to concerns regarding the skin toxicity associated with its metabolite, hydroquinone (HQ). While the derivatization of AR provides a strategy to promote stability, the multistep and complicated chemical synthesis restricts its industrial production. The present study reported a naturally derived AR derivative, 6′-O-caffeoylarbutin (CA), which is hypothesized to resist hydrolysis to HQ owing to the conjugation effect and steric hindrance, resulting in better stability. To verify this hypothesis, the degradation of CA and AR was investigated using high-performance liquid chromatography with diode-array detection. The skin-lightening substances, AR and caffeic acid, were found in the degradation products of CA under acidic conditions, which also contained lower quantities of HQ compared to that generated by AR. However, CA was not degraded under enzymatic conditions, exhibiting better stability, which might contribute to its prolonged efficacy and reduced toxicity. The long-lasting skin-lightening efficacy of CA was further verified in a zebrafish drug-withdrawal model. Notably, Mechanistic investigations revealed that CA disrupts melanosome maturation and trafficking by modulating the melanocyte-inducing transcription factor-regulated pathway, providing molecular insights into its skin-lightening efficacy. Graphical This study investigates 6′-O-caffeoylarbutin (CA), a natural arbutin (AR) derivative, demonstrating greater stability than AR by resisting hydrolysis into hydroquinone under acidic and enzymatic conditions. In the zebrafish drug-withdrawal model, CA exhibits prolonged skin-lightening efficacy compared to AR. Mechanistic investigations in vitro further reveal that CA's skin-lightening efficacy is achieved by disrupting melanosome maturation via the MITF-regulated pathway.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Biyang Zhu,Abdul Mueed,Jiachen Liang,Lijun You
The radical-mediated degradation of polysaccharides is a promising route to modify their bioactivity, but the fundamental role of side-chain substituents in directing these reactions remains unclear. Therefore, this study systematically investigated the influence mechanisms of substituents on the monosaccharide degradation under UV/H₂O₂ treatment. Six glucose derivatives, including d -glucose, D-gluconic acid, methyl-D-glucopyranoside, D-glucal, D-glucosamine, and D-glucono-δ-lactone, were selected to represent typical electron-donating (-OCH₃, -NH₂), electron-withdrawing (-COOH, -C=O), and unsaturated double bond (C=C) groups. Degradation kinetic analysis revealed that electron-donating groups accelerated the radical degradation (k obs = 31.59 × 10 −3 min −1 for D-glucal), while electron-withdrawing groups decelerated it (k obs = 17.50 × 10 −3 min −1 for D-gluconic acid). The formation of carbonyl and carboxyl groups showed distinct accumulation patterns dependent on the substituent. Product profiling via high-performance anion exchange chromatography coupled with tandem electrospray mass spectrometry (HPAEC-ESI-MS/MS) demonstrated unique fragment patterns for each derivative, confirming substituent-directed reaction pathways. Quantum chemistry calculations further validated the proposed mechanisms, showing that electron-donating groups lowered the energy barriers for key steps such as hydrogen abstraction and peroxyl-radical cleavage. This work elucidates that the electronic properties of side-chain substituents determine the regioselectivity, kinetics, and product distribution in monosaccharide radical degradation. The findings provide a foundational mechanistic framework for predicting and controlling the degradation of complex functional polysaccharides.
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Science Bulletin
·
2026
·
IF 20.7
Dan Zhou,Dingru Li,Caimei Zhong,Qiang Li,Peixian Chen,Shuqing Yang,Herong Liang,Zhiyan Chen,Han He,Hua Zhang,Xiaohong Zeng,Mo Chen,Yingxin Lin,Meng Xu,Xingyin Liu,Mengyun Cai,Yuhua Deng
The gut microbiome is increasingly linked to breast cancer (BC) progression; however, specific microbial metabolites and their direct mechanistic connections to oncogenic signalling remain poorly defined. Here, using multi-omics analyses in treatment-naïve patients with BC, we identified gut microbiota-derived uridine diphosphate N-acetylglucosamine (UDP-GlcNAc) as a circulating oncometabolite associated with therapeutic response. We further showed that Ruminococcus lactaris is a key intestinal commensal capable of de novo UDP-GlcNAc biosynthesis, and that microbial-derived UDP-GlcNAc acts as an independent tumour-promoting metabolite, even though the host hexosamine pathways generate the majority of circulating UDP-GlcNAc pools. Mechanistically, UDP-GlcNAc systemically activates O-GlcNAc transferase (OGT), stabilizing the transcription factor NFIB, and triggers a feed-forward loop that upregulates OGT and the proto-oncogene KIT , thereby driving BC progression. Genetic or pharmacological inhibition of OGT disrupts this signaling axis and suppresses tumour growth, even in the presence of UDP-GlcNAc–producing bacteria. These findings reveal a gut microbiota–metabolite–host signalling circuit, in which a microbial metabolite hijacks a core host post-translational modification pathway to promote BC progression, providing novel opportunities for microbiome-targeted diagnosis and therapy. Gut‑microbiota‑derived UDP‑GlcNAc enters circulation, activates host OGT‑mediated O‑GlcNAcylation to stabilize NFIB. This triggers a feed‑forward loop elevating OGT and proto‑oncogene KIT , driving breast tumor progression. Inhibiting OGT blocks this oncogenic axis even with UDP‑GlcNAc‑producing Ruminococcus lactaris . This reveals a gut‑microbe‑metabolite‑host signaling circuit for breast cancer. Download: Download high-res image (170KB) Download: Download full-size image
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 6
·125377
·
IF 7.5
Xin Sun,Ziyi Zhu,Wei Yan,Yuanping Chen,Yingcong Wei,Jing Xu
Synergistic strain/phase engineering boosts photocatalytic hydrogen evolution performance. • The CdS-O/MS-5 achieves a high hydrogen evolution rate of 68.71 mmol·g −1 ·h −1 and AQE of 48.49%. • Strain-enhanced charge transfer couples with metallic/semiconducting phase junctions. While high-efficiency photocatalytic water splitting is pivotal for a sustainable hydrogen economy, its widespread implementation is hindered by sluggish charge-carrier kinetics and the formidable overpotentials inherent to traditional semiconductor. Here, we report a dual-optimization strategy to transcend these limitations by integrating oxygen-doped CdS (O-CdS) with a 1 T/2H-MoS 2 phase-engineered co-catalyst. The interstitial incorporation of oxygen induces a pronounced lattice expansion within the CdS framework, which reconfigures the electronic band structure by introducing additional electronic states near the Fermi level. These emergent states act as energetic stepping stones, facilitating efficient charge injection into the co-catalyst. Concurrently, the rational design of the 1 T/2H-MoS 2 metallic/semiconducting homojunction facilitates efficient interfacial charge extraction and provides abundant active sites for proton reduction. This synergistic integration of lattice-strain engineering and phase-controlled co-catalytic architectures simultaneously elevates photocatalytic activity and long-term durability. The optimized system exhibits a 2.5-fold enhancement in hydrogen evolution performance (68.71 mmol g −1 h −1 ) over the pristine CdS. Our findings establish a robust paradigm for leveraging lattice distortion and polymorphic phase engineering to optimize solar-to-chemical energy conversion in hybrid semiconductor architectures.
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FOOD AND BIOPRODUCTS PROCESSING
·
2026
·
IF 4.7
Mengqian Zhao,Jian Yin,Zhihong Yang,Xuwei Long
Bacterial resistance poses a growing challenge that requires innovative antibacterial solutions. This study assessed the antibacterial activity of methylamide-modified rhamnolipids (RLs‑MMA). RLs-MMA was first synthesized through amide condensation of methylamine with the carboxyl group of rhamnolipids. The structure of the derivatives was confirmed using FTIR NMR, and LC‑MS analyses. RLs‑MMA were significantly potent against Gram‑positive bacteria. Against Bacillus cereus , the MIC was as low as 16 mg/L. This value represents a 16‑fold improvement on di‑RLs (256 mg/L) and a 4‑fold improvement on mono‑RLs (64 mg/L). The MIC values of RLs‑MMA against Staphylococcus aureus and methicillin-resistant S. aureus (MRSA) were in the range of 64–128 mg/L, significantly lower than values for unmodified RLs (≥256 mg/L). RLs‑MMA alone were ineffective against Gram‑negative bacteria (MIC >512 mg/L). However, combing them with the photosensitizer toluidine blue O (TBO) under red‑light irradiation, the synergy was considerable. Checkerboard assays revealed fractional inhibitory concentration index (FICi) values < 0.375 and < 0.25 for Escherichia coli and Pseudomonas aeruginosa , respectively. According to mechanistic studies, RLs‑MMA permeabilizes bacterial membrane integrity, promotes the uptake of intracellular TBO, and enhances the photodynamic generation of reactive oxygen species (ROS). This combined membrane permeabilization and photodynamic strategy can overcome the outer membrane of Gram‑negative bacteria.
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