ACS Applied Materials & Interfaces
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2026
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IF 7.8
Junde Ji,Luchan Lin,Yifan Hu,Weiqing Wu,Xinde Zuo,Zhuguo Li
Surface-enhanced Raman spectroscopy (SERS) is widely used in the ultrasensitive detection of chemicals in environmental and biological fields. In this work, anchored plasmonic nanoparticle (NP) structures on various substrates are fabricated by ultrafast laser-induced multiphoton reduction, and the bonding strength between the plasmonic NP and substrate is enhanced by plasmonic effect-enhanced interfacial energy deposition. Anchored Ag NPs with a diameter of 20.68 ± 8.68 nm and a gap of < 5 nm are achieved by precise energy modulation. The prepared substrates show ultralow detection limits (10–14 M for crystalline violet and 10–12 M for thiabendazole) with high stability, which can retain 78.1% and 65.9% of the initial Raman intensity even after 100-day ambient aging and 105 bending cycles. The uniformity of the Raman intensity and substrate reproducibility has relative standard deviations of 4.29% in the 100 × 100 μm2 range and 7.95% for 25 substrates. In addition, direct nanofabrication on fresh biological substrates (e.g., apples, plant leaves) with minimal thermal damage can also be allowed. The mechanical stability test shows that the Raman signal after water flow impinging for 120 min is still 56.9% of the initial state. This in situ ultrafast laser synthesis provides a substrate-independent approach to fabricate a robust SERS platform for environmental, biomedical, and food safety applications.
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JOURNAL OF CHEMICAL EDUCATION
·
2026
·
IF 3
Qitong Zhang,Yu Wang
Carbon quantum dots (CQDs) are a prominent research topic in the fields of chemistry and interdisciplinary sciences. This paper presents a simple synthesis method for CQDs, aimed at introducing students to the preparation and application of nanomaterials. Through the use of nitrogen-doped CQDs, the experiment enables a systematic understanding of their structure, fluorescence mechanism, and potential applications in interdisciplinary fields, based on a comprehensive literature review. The fluorescence quantum yield of the CQDs was accurately determined using the reference method and characterized in detail using UV–vis, TEM, and XPS techniques. The innovation of this experiment lies in the combination of synthesized CQDs with poly(lactic acid) (PLA) powder, which, after drying, yields a white powder with prominent fluorescence properties. This material was then successfully used in 3D printing to produce a model of the “Lilac I” small satellite, demonstrating the potential application of CQDs in the field of 3D printing. The study further explores the prospects of this material in biomedical applications, particularly in the 3D printing of fluorescent probes. By integrating cutting-edge nanotechnology with traditional experimental teaching, this experiment not only enhances students’ engagement but also fosters their innovative thinking and comprehensive experimental skills.
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ACS Applied Nano Materials
·
2026
·
IF 5.8
Yuanxin Yan,Yiqi Xu,Chunfang Zi,Gaige Li,Fang Liu,Yonghao Chen,Chengwei Jiang,Yanqing Tian
Owing to advantages such as high conductivity and low processing temperature, electrically conductive adhesives (ECAs) are critical for low-temperature interconnections; however, the ECAs remain challenging due to the need for high silver content. Sn–In–Bi alloys have attracted considerable attention due to their low melting point characteristics and well-established industrial applicability. This study investigated the synthesis of Sn–In–Bi low-melting-point alloy (LMPA) particles using water as an environmentally friendly and safe solvent under various conditions, successfully producing LMPA particles with an average size of 307 nm. Further, antimony-doped tin oxide nanoparticles were incorporated into the ECAs with LMPA particles to construct a multifunctional composite system. This filler system can serve as a “bridge” to connect the silver flakes to significantly improve ECAs’ electrical and thermal conductivity by using low Ag content (50 wt %) and bring functional natures such as enhancing mechanical strength and infrared stealth performance in different polymer substrates (epoxy resin E44 and thermoplastic polyurethane (TPU)). Especially, the ECA with TPU matrix demonstrates excellent flexible tensile performance, maintaining tensile properties comparable to pure TPU even at filler contents up to 65 wt %, offering an effective solution for high-performance, multifunctional, low-temperature interconnect materials in complex environments.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
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IF 9.6
Zhuwei Li,Wenya Tang,Xiaoran Shi,Dongxuan Zhang,Meiwen Guo,Meiqi Zhu,Dingfeng Jin,Huitao Fan,Bo Li,Liya Wang,Jungang Hou
The establishment of artificial photosynthetic systems for hydrogen peroxide (H 2 O 2 ) synthesis signifies a sustainable and eco-friendly strategy that could replace the conventional anthraquinone oxidation pathway. However, the majority of works have predominantly focused on the modulation of individual catalytic site, while systems that enable mutual regulation between adjacent catalytic sites have received little attention. Herein, we designed two novel ether-linked covalent organic frameworks (TpO-COF and TpOO-COF). Compared with TpO-COF, the cooperative interaction between adjacent oxygen catalytic sites in TpOO-COF results in a synergistic enhancement, yielding superior catalytic efficiency beyond the sum of isolated effects. When using benzoic alcohol as the sacrificial agent, a remarkable H 2 O 2 generation rate of 3067 μmol g −1 h −1 , the TpOO-COF catalyst demonstrates a 7.6-fold increase in activity compared to TpO-COF. According to theoretical analyses, TpOO-COF possesses considerably lower Gibbs free energies for the oxygen intermediates than TpO-COF, confirming the presence of mutual electronic modulation among its oxygen catalytic sites. This work advances a distinctive strategy for modulating catalytic sites while providing valuable mechanistic insights into the structure–activity interplay underlying H 2 O 2 formation.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Jianguo Feng,Zhen Li,Zhiyang Chen,Tianzhen Jiang,Xiang Li,Ziyi Wu
Stimuli-responsive pesticide nanocarriers allow precise delivery of pesticides to target pests, enhancing insecticidal efficacy while improving safety for non-target organisms. Herein, mesoporous silica nanoparticles (MSNs) were synthesized via the sol–gel method, followed by encapsulation of indoxacarb (IN) within their pores. Disulfide bonds (SS) were grafted onto the MSN surface, and cyclodextrin (CD) was incorporated to obtain enzyme/redox dual-responsive nanoparticles (IN@MSNs@SS@CD). Physicochemical characterization revealed a well-defined spherical core–shell structure. The encapsulated IN content was approximately 22.27%. In the presence of α-amylase and glutathione, the highest cumulative release (72.9%) occurred at 7 days, demonstrating dual-responsive release behavior. The contact angle and resistance to rain erosion experiments show that the nanoparticles have good wettability and adhesion. Insecticidal activity tests showed that IN@MSNs@SS@CD caused higher mortality in Cnaphalocrocis medinalis than commercial IN@EC. Moreover, the nanoparticles exhibited enhanced biocompatibility toward earthworms, zebrafish, and human bronchial epithelial cells (BEAS-2B), supporting their environmentally benign potential. Herein, a dual-responsive nanoparticle that can be used for precise pest management to improve biosafety and wettability has been developed. It provides a transformative approach for precision agriculture.
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Journal of Energy Chemistry
·
2026
·
IF 15.6
Cheng Wang,Luyao Li,Weicun Chu,Zhongliang Dong,Yinlong Zhu,Xiaoming Zhao,Lixiong Yin,Riming Nie,Wanlin Guo
Enhancing perovskite solar cell (PSC) performance often requires light management, interface engineering, and crystallization control, but these approaches typically involve multiple functional additives or interfacial modifiers, increasing fabrication complexity. Here, we introduce a polymer-assisted interfacial engineering strategy using a carboxymethyl chitosan (CMC)-based polymer functionalized with Cs + (PCM-Cs + ) to modify mesoporous TiO 2 (mp-TiO 2 ). Upon heating, this polymer sequentially releases functional molecular species, inducing backbone rearrangement, deacetylation, and polysaccharide cleavage. The resulting fragments passivate defects, promote TiO 2 microstructural reconstruction, and enhance electronic coupling with the perovskite. These effects yield power conversion efficiencies of 25.5% and 26.04% with TiO 2 and SnO 2 electron transport layers, respectively. To the best of our knowledge, this represents a record efficiency for fully air-fabricated perovskite solar cells. The devices also demonstrate outstanding stability under various ISOS proto-cools, with unencapsulated mp-TiO 2 :PCM-Cs + cells retaining over 97% of their initial PCE after 2,750 h dark shelf storage, projecting an estimated T 80 of ∼20,000 h. This work provides a universal and scalable interfacial engineering strategy to simultaneously achieve high efficiency and long-term stability in air-processed perovskite solar cells with simplified fabrication.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·122093
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IF 7.5
Qian Wu,Guo Feng,Feng Jiang,Xiaojun Zhang,Yanqiao Xu,Jianmin Liu,Jian Liang
Magnesium aluminate (MgAl 2 O 4 ) spinel with dominant (400) plane exposure was synthesized by tailoring the precursor structure using a nonhydrolytic sol-gel method (NHSG). The effects of magnesium source and aluminum source on the preferential growth and morphology of MgAl 2 O 4 were systematically investigated. Rietveld refinement was used to analyze the structural variations of the prepared MgAl 2 O 4 . Furthermore, Density Functional Theory (DFT) calculation was performed to determine the adsorption energies of Congo red on the (311) plane and (400) plane. Results demonstrate that uniform MgAl 2 O 4 petals with a length of 240–280 nm were prepared using Mg and Al respectively as magnesium source and aluminum source, exhibiting a significantly enhanced I 400 /I 311 ratio of 2.459. This higher I 400 /I 311 ratio indicates a greater proportion of well-defined petals and corresponds to enhanced adsorption capacity. The MgAl 2 O 4 precursor, synthesized through polycondensation of MgAl 2 (OC 2 H 5 ) 8 prepared from metallic Mg and Al, exhibits an atomic arrangement analogous to the (400) plane of MgAl 2 O 4 spinel, facilitating its crystallization into (400)-dominant MgAl 2 O 4 petals. DFT calculations further reveal that the (400) plane of MgAl 2 O 4 exhibits a stronger adsorption energy to Congo red (CR) (-3.86 eV) than the (311) plane (-0.88 eV), consistent with the experimental results. This work provides a novel method for special crystal plane exposure.
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Journal of Cleaner Production
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2026
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IF 10.7
Shichang Zhang,Zheng Qin,Zihang Yi,Weiping Liu,Lifeng Chen,Mohammed F. Hamza,Yuezhou Wei,Jie Yu,Shunyan Ning
Effective elimination of uranium (VI) from wastewater is critical to environmental remediation. Herein, a novel polyphosphonic acid-based ion exchanger PDVA/SiO 2 with spatially symmetric structure was designed and fabricated, and its adsorption behavior towards uranium in pH 4 solution was investigated at both mg/L and μg/L concentration levels using batch and column experiments respectively. The adsorbent could rapidly recognize and complex with uranium and reach adsorption equilibrium within 5 min, with the adsorption efficiencies of uranium in pure water, tap water, lake water and seawater were about 99.9%, 98.7%, 96.5% and 71.5% respectively. Uranium could be consistently and efficiently removed using a column separation device, with the concentrations in the purified solution less than 30 μg/L. The adsorption mechanism was dominated by ion exchange between UO 2 2+ and H + (in P–OH). Density functional theory (DFT) calculations demonstrated that the complex formed by the phosphate group with bi-deprotonated binding to UO 2 2+ possessed higher stability, and the binding process was accompanied by charge transfer and energy reduction.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Xiaofeng Liu,Ruiji Wang,Fayou Tian,Hao Ren,Jinglin Wang,Yan Lin,Zhongtao Li,Mingbo Wu
Development of electrocatalytic reduction of carbonyl compounds for carbon‑carbon (C C) coupling represents an effective pathway to achieve sustainable synthesis of multi‑carbon chemicals. The hydrogen evolution reaction (HER) is considered the most significant competitive process, which could be suppressed by weakening the adsorption of protons on interface or by making protons in the electrolyte inactive through the use of certain additives. However, increasing the coverage of protons and carbonyl molecules are necessary to facilitate the generation of hydrogenation intermediates during C C coupling. To reconcile this contradiction, a Ni-based catalyst for electrocatalytic coupling of formaldehyde has been developed, decorated with phosphate groups around Ni sits. The following enhancement could be achieved: 1) Ni sites enhance the adsorption of formaldehyde on catalyst surface and promote their electroreduction; 2) Phosphate groups near the Ni sites can act as protons affinity sites to prevent their self-coupling. As the result, the adsorbed HCHO and hydrogen can be balanced to facile the formation of intermediate *CH 2 OH during C C coupling. Consequently, the PD-Ni/C@CP catalyst exhibits outstanding performance in the continuous preparation of ethylene glycol, with a production rate of 22 mmol/(L·min) and a Faradaic efficiency exceeding 90%, highlighting its potential for the efficient and sustainable synthesis of other high-value chemicals.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
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IF 9.2
Wenyuan Yang,Limin Qiu,Xintong Liu,Tingting Wang,Tianqi Wang,Dan Li,Hui Yu,Ying Yang
The development of portable, low-power H 2 S sensors is critical for environmental safety but remains challenged to balance high sensitivity with mechanical flexibility at room temperature. Herein, we present a hierarchical SnO 2 /SnS 2 nanoflower composite synthesized via a facile in-situ sulfidation strategy, which ensures intimate lattice coherence for robust flexible sensing. The optimal sensor on a PET substrate exhibits a high response of 19.01 to 10 ppm H 2 S at 25 °C, a low theoretical detection limit of 95.38 ppb, and excellent mechanical stability under 90° bending. Mechanistically, Mott-Schottky analysis confirms that SnO 2 /SnS 2 heterojunctions induce a 50-fold increase in carrier concentration. This electronic modulation extends the Debye length (24.4 nm) beyond the average crystallite size (16.9 nm), creating a volume depletion state in ambient air that enables massive resistance modulation upon H 2 S exposure. This work demonstrates a robust flexible sensor and establishes a quantitative criterion for heterojunction design through Debye length engineering.
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DYES AND PIGMENTS
·
2026
·
IF 3.9
Qin Fang,Mengdie Qin,Ke-jun Tan
The development of simple and efficient synthesis strategies for multicolor fluorescent carbon dots (CDs) is crucial for advancing their applications in fields such as optoelectronic devices and fingerprint detection, and other fields. This study reports a “one-step synthesis combined with Thin Layer Chromatography (TLC) separation” strategy for the successful preparation of multicolor fluorescent CDs covering the entire visible spectrum (499-628 nm) under constant solvothermal conditions, using Neutral Red as the sole core precursor. The separated monochrome components—red (R-CDs), orange (O-CDs), yellow (Y-CDs), and green (G-CDs)—exhibit excellent optical properties, with R-CDs achieving a quantum yield (QY) as high as 20.3%. Systematic structural and spectral characterization reveals that the multicolor luminescence of these CDs does not originate from the conventional quantum confinement effect but is dominated by their surface states. The energy of these surface states is precisely tuned by the graphitization degree of the carbon core and the type of nitrogen-containing functional groups. Leveraging their superior optical properties and solid-state luminescence, the separated multicolor CDs were successfully applied in solid-state lighting to fabricate monochrome light-emitting diodes (LEDs) emitting bright orange, yellow, and green light, respectively. Furthermore, by compounding the highly luminescent R-CDs with starch, high-fidelity imaging of latent fingerprints (LFPs) was achieved, with second-level details being clearly visible. This research provides a new pathway for the low-cost production of multicolor fluorescent carbon dots, showcasing their broad application prospects in the field of advanced functional materials.
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TALANTA
·
2026
·
IF 6.7
Hui-Shuang Li,Na-Na Ran,Hong-Wei Li,Yuqing Wu
Developing robust methods to discriminate methanol from ethanol is critical for industrial safety and quality control. Herein, we report a novel strategy of two-step solvothermal method to synthesize dual-emission carbon dots ( p -PD CDs) from p -phenylenediamine. The p -PD CDs exhibit unique, solvent-dependent fluorescence: in ethanol, they display a dominant blue emission at 445 nm with a weaker red emission at 598 nm; while in methanol, the blue emission is significantly quenched and red-shifted to 465 nm. This distinct solvatochromic response provides a ratiometric luminescent signal ( I 445 /I 598 ) for highly selective methanol detection in ethanol across two linear ranges (1-60 vol% and 60-100 vol%), achieving a detection limit of 0.38 vol%. Comprehensive characterization using transmission electron microscopy (TEM), femtosecond transient absorption (fs-TA), and ultraviolet photoelectron spectroscopy (UPS) revealed that the emission differences originate from methanol-caused aggregation of p -PD CDs. This aggregation is driven by weaker hydrophobic interactions and stronger hydrogen bonding compared to ethanol, leading to aggregation-caused quenching (ACQ) and an accelerated non-radiative decay pathway for the blue emission, as confirmed by time-resolved and transient absorption spectroscopy. The practical utility was successfully demonstrated by accurately quantifying methanol in industrial ethanol and a commercial cleaner with excellent recovery rates (99.5-101.7%), highlighting its significant potential for real-world application.
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