JOURNAL OF THE AMERICAN CERAMIC SOCIETY
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2026
·Vol. 109
·期 3
·e70630
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IF 4.2
Hengji He,Dainan Zhang,Youbin Zheng,Shuyang Ma,Kui Liu,Cheng Liu,Qinghui Yang,Huaiwu Zhang
In this study, Li x Ca 1−x W 1−0.75x Te 0.75x O 4 ceramics were synthesised using a non-stoichiometric co-doping strategy (Li/Te = 1:0.75), systematically revealing the synergistic effect of Li and Te. During doping, Li was introduced from the decomposed secondary Li 2 TeO 4 phase, which acted as a liquid-phase sintering aid. Density functional theory calculations confirmed that Te 4+ substitution for W 6+ enhanced the chemical bond strength and effectively passivated oxygen vacancies, promoting densification and improving dielectric properties. However, excessive doping led to the substantial decomposition/volatilisation of the secondary phase, where the volatilisation of Te outweighed its positive substitution effect, thereby degrading both structure and dielectric performance. Following optimisation, the Li 0.04 Ca 0.96 W 0.97 Te 0.03 O 4 ceramic sintered at 910°C exhibited optimal properties: εr = 9.86, Q× f = 89,613, τ f = −38.6 ppm/°C. The material also exhibited favorable dielectric characteristics in the terahertz range (0.2–1.2 THz, ε r : 4.97–6.36, tan δ: 0.009–0.0848), rendering it a potential candidate for dual-band applications in low-temperature co-fired ceramic technology.
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MICROCHEMICAL JOURNAL
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2026
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IF 5.2
Yue Zhang,Siyu Ren,Ce Wang,Xiaofeng Lu
Bimetallic Ru-Co nanofibers (NFs) are successfully fabricated via an electrospinning technique coupled with thermal calcination and hydrogen reduction treatment. The optimized fibrous Ru 3 -Co 7 nanozyme demonstrates exceptional peroxidase (POD)-like activity, capable of oxidizing the chromogenic substrate 3,3′,5,5′-tetramethylbenzidine (TMB) by hydrogen peroxide (H 2 O 2 ) to generate oxidized TMB (oxTMB), yielding a characteristic blue response. Capitalizing on the ascorbic acid (AA)-mediated chromogenic attenuation mechanism via oxTMB reduction, a colorimetric sensing platform is established by tracking the absorbance variations at 650 nm. This AA quantification strategy achieves superior analytical performance, featuring a detection limit (LOD) of 0.87 μM, a broad linear response spanning 1–40 μM (R 2 = 0.993), and remarkable selectivity against interfering species. Furthermore, this platform is successfully applied to assess total antioxidant capacity in real-world samples, including fresh fruit juices and available beverage. The POD-like catalytic reliability is validated through parallel validation against the established cupric reducing antioxidant capacity (CUPRAC) assay, confirming the robustness of this strategy for practical antioxidant analysis.
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Journal of CO2 Utilization
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2026
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IF 8.6
Ruifeng Zhou,Muhammad Shuaib Khan,Xianwei Fu,Qiuye Li
The extensive utilization of fossil fuels has accelerated greenhouse gas emissions, triggering climate issues that have become a global concern. The integration of waste valorization with CO 2 capture agent development is recognized as a green, cost-effective, and efficient approach to achieving carbon neutrality and environmental protection. In this study, porous SiO 2 supports (specific surface area 809.35 m 2 /g) are fabricated from coal-fired power plant waste (fly ash) to synthesize a series of co-modified amine-functionalized adsorbents for CO 2 capture. Through a strategic combination of KH550 (Aminopropyltriethoxysilane) hydrolytic grafting and PEHA (Pentaethylenehexaamine) wet impregnation, a polyamine network is constructed, endowing the co-modified adsorbent CS-4K 50PEHA with superior CO 2 uptake (4.933 mmol/g, 70℃) and exceptional thermal stability. Thermogravimetric-infrared analysis and DFT calculations confirmed the chemical bonding of KH550 to the support, with the co-modified adsorbent exhibiting enhanced thermal stability (thermal decomposition temperature 320℃) compared to singly-modified counterparts. Furthermore, the structure-activity relationship between silane coupling agents and the support during hydrolysis is systematically investigated. The synergistic effect of polyamine active sites on the CO 2 adsorption mechanism is elucidated through in situ DRIFTS and DFT simulations. This work provides molecular-level insights into different amine modification strategies for solid waste-based supports, highlighting the significance of cooperative adsorption mechanisms at the intersection of waste valorization and carbon capture technologies.
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ADVANCED FUNCTIONAL MATERIALS
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2026
·
IF 19.9
Ou Wang,Leiyu Diao,Ping Li,Youyou Feng,Dong Cheng,Yaqiong Su,Jing Wei
Pd-based nanoparticles have been widely employed to enhance H 2 sensing performance due to their strong capability for H 2 adsorption and dissociation. However, strong Pd–H* interactions hinder the hydrogen spillover process, while pronounced CO adsorption results in poor selectivity. Herein, we propose a Pt–Pd single-atom alloy (SAA) sensitization strategy that creates electron-deficient Pd δ+ sites to modulate the interaction between Pd and gas molecules. As a proof of concept, Pt 1 Pd SAA is deposited on commercial SnO 2 to fabricate H 2 sensors. The resulting device achieves an ultra-low detection limit (21 ppb), short response and recovery time (0.8 s and 5.9 s), excellent selectivity and enhanced CO resistance, outperforming traditional Pd nanoparticles, PtPd alloy sensitizers modified SnO 2 gas sensors, and commercial H 2 sensors. Mechanistic studies establish that atomic Pt induces electron-deficient Pd δ+ sites, achieving atomic-scale decoupling of hydrogen activation from CO adsorption, which enables barrierless hydrogen spillover and inherently CO-resistance H 2 sensing, with CO back-donation suppressed by nearly 50%. This study presents a robust SAA sensitization strategy that leverages atomic-level modification-induced electronic structure modulation to overcome the sensitivity-selectivity trade-off, demonstrating its promise for next-generation H 2 sensors.
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Small Methods
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2026
·
IF 8.7
Xiaochen Feng,Zihao Huang,Mingwei Fang,Meiling Wang,Jinyue Ma,Zewen Wang,Ying Zhu,Lei Jiang
Electrochemical CO 2 reduction (CO 2 RR) to ethanol offers a sustainable route for carbon utilization and energy storage, yet achieving high ethanol selectivity under limited CO 2 availability remains a significant challenge. The central issue is the lack of quantitative understanding of how the interfacial * CO and * H intermediates jointly govern product selectivity. Here, we establish an interfacial coverage regulation strategy by embedding Cu nanoparticles into an imine-functionalized covalent organic framework (Cu/Im-COF). The imine-rich interface enriches CO 2 adsorption while modulating proton transfer, enabling a balanced surface coverage of * CO and * H, identified as the key selectivity descriptor ( θ *CO/*H ) for ethanol formation. Operando Raman spectroscopy, density functional theory calculations, confirms that an optimized θ *CO/*H stabilizes the * HCCHOH intermediate and lowers its formation barrier. Quantitative integration of Raman features allows direct determination of θ *CO/*H , revealing a volcano-type dependence of ethanol selectivity on this descriptor. A maximum ethanol Faradaic efficiency of 56% is achieved at log( θ *CO/*H ) ≈ 3.0, a current density of 700 mA cm − 2 , and a 15% CO 2 feed. This work establishes θ *CO/*H as a quantitative bridge between intermediate coverage and reaction kinetics, providing a mechanistic framework for rational design of CO 2 RR catalysts with high ethanol selectivity under CO 2 -constrained conditions.
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LANGMUIR
·
2026
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IF 4.4
Wenhao Li,Yujing Chang,Jiajie Tian,Jie Min,Fengmei Ding
A high-methyl-density siloxane-co-acrylate copolymer was successfully synthesized via aqueous emulsion polymerization as a durable, fluorine-free antisoiling finishing agent. By employing a molecular design strategy that utilizes vinyltrisiloxane (VTS) and 3-(methacryloxy)propyltrimethoxysilane (M3T) to create a methyl-rich surface, along with hydroxyethyl methacrylate (HEMA) as a cross-linker, the resulting emulsion imparted exceptional superhydrophobicity to the polyester fabric, achieving a water contact angle (WCA) of 159.7° and a sliding angle (SA) of 5.9°. The finished fabric exhibited remarkable durability, maintaining WCAs of 151.6° (SA of 11.4°) after 25 washing cycles and 127.7° (SA of 19.3°) after 100 abrasion tests, alongside excellent self-cleaning properties and resistance to both aqueous and oily stains. The finishing agent also demonstrated uniform particle size, high stability under acidic/alkaline conditions, and thermal tolerance up to 180 °C. This work, based on a simple and eco-friendly process, presents a highly promising and sustainable alternative to fluorinated coatings for industrial textile applications.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
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IF 19.7
Jiahui Zhan,Ruihong Dai,Baohuan Wei,Ting Sun,Hu Luo,Shumin Li,Xuan Huang,Haozhi Zhou,Lin Xia,Xiaofang Liu,Shunan Zhang,Shicheng Zhang,Hui Wang,Shurong Wang,Yuhan Sun
Co-modified Ni/SiO 2 produces aviation fuel from polyolefins under mild conditions. • Co doping modulates Ni electronic structure to favor internal C-C bond cleavage. • The yield of liquid reaches 82.3% with 79.0% selectivity to the C 8 -C 16 fraction. • Coupled with green energy, the process reduces carbon footprint by 80%. The escalating accumulation of plastic waste poses a major threat to global sustainability. Converting waste polyolefins into aviation fuel offers a promising valorization route, but the challenge remains in overcoming the limited performance of non-noble metal catalysts. Here, a 10Ni-2Co/SiO 2 catalyst was developed that achieved an excellent balance between activity and selectivity for polyethylene hydrogenolysis. Under mild conditions at 280 °C and 3 MPa H 2 , it delivered an 82.3% liquid yield with 79.0% selectivity toward C 8 -C 16 hydrocarbons. The incorporation of Co induced the coexistence of Ni 0 and Ni δ+ species, which may have facilitated internal C-C bond cleavage along the polyethylene backbone. This synergy may have contributed to hydrogen activation and C-C bond cleavage, which may have promoted a continuous “cleavage-hydrogenation-desorption” sequence, thereby helping to suppress excessive chain scission and favoring the selective formation of aviation-fuel-range hydrocarbons. This catalyst also showed broad applicability to other real-life waste polyolefins, and when powered by renewable energy, the process achieved a significantly reduced carbon footprint, offering a sustainable route for plastic upcycling and aviation decarbonization. Download: Download high-res image (175KB) Download: Download full-size image Co-modified Ni/SiO 2 catalyst enables mild and selective hydrogenolysis of waste polyolefins into aviation fuel (C 8 -C 16 hydrocarbons), achieving the highest yield of 65.1%.
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Molecular Catalysis
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2026
·
IF 4.3
Zhiqin Li,Tengran Luo,Yuxin Kang,Zegang Qiu,Xin Wang
Ni effectively reduces the surrounding electron density of Co and enriches defects in catalyst. • Ni introduction strengthens adsorption of vanillin and H 2 while facilitates desorption of reaction intermediate. • 4Co-1Ni/NPC achieves complete conversion of vanillin with 100% selectivity towards MMP, outperforming Co/NPC catalyst. • Ni incorporation enhances ability of 4Co-1Ni/NPC to cleave C O bond of intermediate. The development of cost-effective catalysts for the selective hydrodeoxygenation (HDO) of biomass-derived platform molecules is crucial to sustainable biorefining. Herein, a series of Co-Ni bimetallic catalysts supported on N-doped porous carbon were rationally designed via pyrolysis of bimetallic Co-Ni zeolitic imidazolate framework (ZIF) with tunable metal ratios. Comprehensive characterization confirmed that Ni incorporation modulated the electronic structure of Co, promoted metal dispersion, generated abundant defect sites, and enriched the surface concentration of metallic Co 0 and Ni 0 species. The optimal 4Co-1Ni/NPC catalyst exhibited a unique layered architecture, a high surface area, and superior capacity for hydrogen activation. Density functional theory (DFT) calculations revealed that Ni introduction effectively lowered the local electron density of Co, which fundamentally adjusted the adsorption/desorption energetics—strengthening the binding of vanillin and H 2 while facilitating the desorption of the target product 2‑methoxy-4-methylphenol (MMP). Under mild conditions the 4Co-1Ni/NPC catalyst achieved complete vanillin conversion with nearly 100% MMP selectivity, significantly outperforming its monometallic counterparts. Moreover, it demonstrated excellent recyclability over five consecutive runs and broad substrate tolerance toward various lignin-derived aldehydes. The reaction was verified to proceed via 4‑hydroxy‑3‑methoxybenzyl alcohol (HMP), with C–O bond cleavage in HMP identified as the rate-determining step. This work elucidates the synergistic mechanism in Co-Ni bimetallic systems and provides a principled design strategy for developing high-performance, non-noble metal catalysts for selective biomass valorization. Download: Download high-res image (176KB) Download: Download full-size image
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GREEN CHEMISTRY
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2026
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IF 10.6
Huaimin Tian,Chaoya Han,Zekai Xu,Chao Yao,Xiazhang Li
Coupling solar-driven CO₂ reduction with the valorization of waste biomass-derived platform chemicals represents a pivotal strategy toward achieving carbon neutrality and sustainable resource utilization. However, the high dissociation energy of the C=O bond in CO 2 and the complex side reactions involved in biomass conversion often result in low conversion efficiency and poor product selectivity. To address these challenges, herein, a biochar/pyrite nanocomposite was fabricated via a facile mechanical ball-milling method using natural pyrite and biochar derived from waste corn stover. During the ball-milling process, intimate interfacial contact is established between the two components, leading to the formation of a high-low heterojunction that effectively promotes the spatial separation and interfacial migration of photogenerated charge carriers. The optimized 30 wt% biochar/pyrite sample exhibits outstanding photocatalytic performance under simulated visible light irradiation, achieving a CO yield of 320.7 μmol•g -1 •h -1 with a selectivity of 90.7%, together with a 5-hydroxymethylfurfural conversion of 86.4% and a high 2,5diformylfuran selectivity of 93.2%. The incorporation of biochar not only enhances the adsorption capacity for the reactants but also substantially boosts the photocatalytic activity of pyrite through facilitated interfacial charge transfer. This work provides a new strategy for constructing efficient photocatalytic systems based on natural minerals and waste biomass, enabling the synergistic coupling of CO 2 reduction and biomass valorization.
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Analytical Methods
·
2026
·
IF 3
Yu Liu,Jingjing Fang,Liangxiao Jiang,Hengchao Yang,Cheng Yao,Chan Song
Herein, carbon and nitrogen co-doped CuO nanozymes (C–N/CuO) were constructed via direct pyrolysis of copper(II) phthalocyanine (CuPc) as a single-source precursor. This approach enables the simultaneous incorporation of Cu, C, and N without additional dopants, offering a simple route to tune the electronic structure of CuO. The sample obtained at 400 °C (C–N/CuO-400) exhibits enhanced peroxidase-like activity, which is attributed to C–N incorporation and reduced particle size. In the presence of H2O2, C–N/CuO-400 catalyzes the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) by reactive oxygen species (˙OH and 1O2). Tetracycline (TC) suppresses this process, resulting in a decreased color signal. Based on this effect, a colorimetric and smartphone-assisted method was developed for TC detection, showing a linear range of 1–40 µM with detection limits of 0.15 µM and 0.38 µM. This work provides a simple and effective strategy for nanozyme-based sensing.
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SOLID STATE SCIENCES
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2026
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IF 3.6
Chi Qu,Chenqiu Dai,Kaiyin Shi,Ji Zhu,Fangyuan Liu,Xiuwen Zhu,Cheng Guo,Jianqiang Wang
A novel ferulic acid-tryptophan single-bridge-linked organosilicon precursor (FA-Trp-OSP) was synthesized via a multi-step reaction. • A ferulic acid-tryptophan bridged periodic mesoporous organosilica (FA-Trp-PMS) was synthesized via a sol-gel strategy for the first time. • The incorporation of dual antioxidant functional groups significantly enhances the radical scavenging performance, showing efficient and selective activity toward ABTS.• + , •OH and O 2 • - radicals. • A synergistic antioxidant mechanism based on hydrogen atom transfer and electron transfer pathways is proposed. Oxidative stress caused by excessive free radicals is a major contributor to various diseases. To develop novel antioxidant, a ferulic acid-tryptophan organosilane precursor (FA-Trp-OSP) was synthesized through a multi-step organic synthesis process. Subsequently, it was co-condensed with tetraethyl orthosilicate (TEOS) to fabricate a functionalized mesoporous silica material (FA-Trp-PMS). An optimal precursor loading of 30% maintained a well-ordered mesoporous structure while maximizing the density of functional groups. FA-Trp-PMS displayed superior radical scavenging activity against ABTS• + , •OH, and O 2 • - , attaining scavenging rates of 82%, 92%, and 49% at concentrations of 1.5, 2.0, and 5.0 mg/mL, respectively. The material significantly outperformed the corresponding single-component systems and physical mixture system, exhibiting enhanced antioxidant performance that may be associated with cooperative interactions between ferulic acid and tryptophan functionalities. FA-Trp-PMS also exhibited rapid kinetics (reaching equilibrium within 3-10 min) and good stability over a temperature range of 5-40 °C and within the investigated pH range. This work provides a promising strategy for the development of high-performance antioxidant materials with multi-radical scavenging activity and good environmental stability for applications in food preservation, cosmetic stabilization, and biomedicine. Download: Download high-res image (271KB) Download: Download full-size image
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INORGANIC CHEMISTRY
·
2026
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IF 4.6
Xue-Rong Dou,Xin-Yue Zheng,Yun-Nan Gong,Di-Chang Zhong,Tong-Bu Lu
The performance of photocatalytic CO2 reduction is highly dependent on the electronic structures of active sites, while achieving delicate regulation of electronic states to enhance the catalytic performance remains challenging. Herein, we designed and synthesized four salen cobalt complexes with different functional groups in organic ligands (Co-X, X = –NO2, −COOMe, -tBu, and -OMe) for photocatalytic CO2 reduction. Impressively, by changing the -X groups of the organic ligands, the electronic structures of Co ions in Co-X can be regulated, which results in obviously different photocatalytic performance for the reduction of CO2 to CO, following the -X group sequence of –NO2 > −COOMe > -tBu > -OMe. The optimized Co–NO2 with the strongest electron-withdrawing ability of the –NO2 group achieves the largest turnover number (TON) and turnover frequency (TOF) values of 5727 and 0.32 s–1, respectively, 4.5 times higher than those of the Co–OMe. Theoretical calculations reveal that the spin populations of Co in Co–NO2 are the largest among the four cobalt complexes, which is the most beneficial for absorbing and activating the CO2 molecule, thereby accounting for its highest photocatalytic activity.
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