ChemSusChem
·
2026
·Vol. 19
·期 14
·e70876
·
IF 5.9
Fei Fei,Yunxiao Liao,Jie Gao,Yancheng Wang,Yifeng Xu,Xinting Huang,Rui Chen,Pin Zhou,Shubo Wang,Ningyi Yuan
The solution-based fabrication of perovskite solar cells (PSCs) typically relies on high-purity materials, the cost of which limits commercial scalability. Here, we report an efficient strategy for directly synthesizing FAPbI 3 -based perovskite microcrystals (MCs) from industrial-grade precursors using formic acid (HCOOH) as a multifunctional additive and antisolvent in a synergistic process combining inverse temperature crystallization (ITC) and antisolvent-assisted precipitation. In situ grazing-incidence wide-angle X-ray scattering (GIWAXS) analysis reveals that formate anions (HCOO − ) coordinate with Pb 2+ to regulate crystallization, passivate structural defects, and promote the direct formation of α-FAPbI 3 . An optimal HCOOH concentration (40%–60% v/v) was identified, achieving a high microcrystalline yield of 92.83% and effectively suppressing the formation of δ-FAPbI 3 . However, concentrations exceeding this range (>80% v/v) disrupt the precursor stoichiometry, leading to PbI 2 impurity segregation. Thin films fabricated using the optimized microcrystals exhibited improved morphological uniformity, enhanced crystallinity, reduced nonradiative recombination losses, and extended charge carrier lifetimes. As a result, inverted-structure PSCs based on these MCs achieve a champion power conversion efficiency of 25.24% (0.07 cm 2 ). This work presents a cost-effective and scalable route for producing high-quality perovskite materials and provides mechanistic insights into the dual functionality of HCOOH, offering valuable guidance for the advancement of low-cost, high-performance perovskite photovoltaic technologies. Graphical Formic acid serves a dual function as both an additive and antisolvent, directing the direct crystallization of α phase perovskite microcrystals from low purity industrial precursors. This one-step strategy achieves a 92.83% yield, simultaneous defect passivation, and a champion solar cell efficiency of 25.24%.
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ChemistrySelect
·
2026
·Vol. 11
·期 25
·e73786
·
IF 2.3
Han Li,Ziqiang Wan,Zhaojiang Yin,Qian Long,Yanqing Xu,Xueke Chen,Hanfeng Cui,Fusheng Liao
Sulfur dioxide (SO 2 ) and its derivative bisulfite (HSO 3 − ) are widely utilized in food processing but pose potential health hazards at excessive concentrations, highlighting the critical need for rapid and sensitive detection methods for sulfite/bisulfite species. Herein, we report the synthesis of a novel fluorescent probe TPA-OH featuring a donor–π–acceptor (D–π–A) architecture, with triphenylamine (TPA) as the electron-donating unit and 7-hydroxy-1-indanone as the electron-withdrawing moiety. The conjugated C═C double bond enables intramolecular charge transfer (ICT) within the probe. Upon interaction with sulfite/bisulfite species, presumably through nucleophilic addition to the C═C bond, the π-conjugated system is disrupted, resulting in a pronounced fluorescence enhancement accompanied by a distinct blue shift. Under optimized conditions, TPA-OH exhibited a low detection limit of 0.053 µM based on repeated calibration experiments and a broad linear range of 5.0 × 10 − 8 ∼1.0 × 10 − 5 M, along with good stability and strong anti-interference capability toward sulfite/bisulfite detection. This probe was successfully applied for HSO 3 − quantification in real samples and fluorescence imaging of exogenously added HSO 3 − in HepG-2 cells under controlled experimental conditions. Its favorable cytocompatibility supports its use for fluorescence imaging of exogenous sulfite/bisulfite species in living cells under the current experimental conditions. Graphical A novel D–π–A fluorescent probe (TPA-OH) was designed using a triphenylamine donor. The probe detects HSO 3 − via a specific nucleophilic addition disrupting π-conjugation. TPA-OH exhibits an ultralow detection limit of 0.05 nM and broad linear range. Successfully applied for HSO 3 − detection in foods and fluorescence imaging in living cells.
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Foods
·
2026
·Vol. 15
·期 15
·2704
·
IF 6
Weiqian Wang,Jia Liu,Muhammad Aaqil,Siyu Zhou,Xinyu Wei,Linyu Li,Zengzeng Chen,Jun Sheng,Yang Tian,Cunchao Zhao
Gastrodia elata Bl. (GE), a representative medicine–food homology material, requires appropriate processing prior to food application to meet established medicinal quality standards. However, the effects of different traditional processing methods on its quality attributes remain insufficiently elucidated. In this study, three representative processing methods, steaming, moistening, and bran-frying, were systematically compared to evaluate their impact on the structural, compositional, and flavor characteristics of GE. The results demonstrated that processing markedly altered both the physical structure and chemical composition of GE. Moistening caused minimal disruption to the native tissue architecture and largely preserved the free-water distribution pattern. Notably, gastrodin and p-hydroxybenzyl alcohol contents reached 0.38% and 4.16%, respectively, the highest among all treatments, while the overall flavor profile remained closest to that of fresh GE. In contrast, bran-frying induced pronounced dehydration and structural densification, with volatile compounds and differential metabolites accounting for 72.83% and 41.01%, respectively. This treatment also exhibited elevated levels of total phenolics, flavonoids, and protein. Steaming, by comparison, promoted starch gelatinization and water redistribution, shifting the flavor profile from a delicate herbal note toward enhanced umami, floral, and mildly roasted characteristics. Overall, these findings reveal that processing-induced structural remodeling and changes in water state play critical roles in regulating the quality attributes of GE. By integrating structural characterization, water-state analysis, and multi-omics data, this study provides a systematic understanding of the formation of GE quality attributes under different processing methods, offering a theoretical basis for quality control and process optimization.
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ELECTROCHIMICA ACTA
·
2026
·
IF 5.8
Yingyuan Zhao,Anpeng Su,Panpan Li,Mengbing Liu,Hubing Yin,Lu Wang,Jingjing Zheng,Yu Xiao,Wei Du
A facile one-pot strategy synthesizes porous B-NiCo-LDH/Ti 3 C 2 2D/2D heterostructures. • B doping tunes electronic structure and strengthens NiCo-LDH/Ti 3 C 2 interfacial bond. • Composite shows enlarged surface area and optimal porous structure for ion transport. • This work offers a universal strategy for designing doped 2D heterostructures. MXenes and layered double hydroxides (LDHs) emerge as advanced electrode candidates for high-performance supercapacitors. Nevertheless, pure Ti 3 C 2 or LDH suffers from either self-stacking or low electronic conductivity and instability. In this work, porous B-doped NiCo-LDH (B-NiCo-LDH) anchored on Ti 3 C 2 nanosheets has been designed and fabricated via a one-pot co-precipitation reaction. Element doping, composite fabrication and structural regulation are realized simultaneously via a simple one-step synthetic strategy. The obtained 2D/2D B-NiCo-LDH/Ti 3 C 2 heterostructures combine the advantages of LDH, Ti 3 C 2 , element doping and porous structure. Boron incorporation diminishes interfacial binding energy in the B-NiCo-LDH/Ti 3 C 2 system, expedites electron movement across interfaces, and ameliorates the composite’s electrical conductivity. The optimal B-NiCo-LDH/Ti 3 C 2 -20 delivers a specific capacitance of 1581.66 F g −1 at 1.0 A g −1 , a rate capability with 82.73% capacitance retention at 20 A g −1 , and a cycling stability of 77.55% after 5000 cycles. An aqueous battery-type hybrid asymmetric supercapacitor (HASC, B-NiCo-LDH/Ti 3 C 2 -20//Bi 2 O 3 /Ti 3 C 2 ) exhibits an energy density of 87.28 Wh kg −1 at a power density of 753.86 W kg −1 . This work provides a feasible strategy for improving energy storage performance via the design of element-doped 2D heterostructures. Download: Download high-res image (379KB) Download: Download full-size image
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Catalysts
·
2026
·Vol. 16
·期 7
·660
·
IF 4.5
Libo Tang,Tongxin Wang,Qinyu Zhang,Bing Ma,Yazhou Shuang
Photocatalytic disinfection is a low-cost, efficient, and sustainable technology, particularly suitable for underdeveloped regions. However, its practical application is limited by severe electron-hole recombination, which reduces photocatalytic efficiency, and the poor reusability of powdered catalysts. Although heterojunction design and catalyst immobilization have been employed to address carrier recombination and recyclability, respectively, these two bottlenecks have not yet been simultaneously resolved. In this study, a reusable three-dimensional core-shell array architecture was constructed on a carbon fiber support based on catalyst morphology and disinfection mechanism considerations. The resulting core-shell heterostructure exhibited inactivation indices 2.2 and 2.5 times higher than those of the P25-loaded film and the pristine TiO2 array structure, respectively.
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Polymers
·
2026
·Vol. 18
·期 15
·1798
·
IF 5.8
Wei Zhang,Haifeng Gao,Xuran Zhu,Yanzong Meng,Leyu Shen,Zhongyao Jiang,Hongjian Gao
To address the persistent challenge of membrane wetting during oil-gas separation in transformer condition monitoring, an omniphobic composite membrane was developed to facilitate the reliable online detection of dissolved gases. An F-CNTs/Teflon AF/PVDF composite membrane, featuring a loofah-like hierarchical structure and omniphobic properties, was fabricated via spraying-deposition strategy on the polyvinylidene fluoride (PVDF) substrate. The morphology, surface chemical composition, wettability and stability of the F-CNTs/Teflon AF/PVDF composite membrane were systematically characterized. Subsequently, the oil-gas separation performance of the composite membrane was evaluated using standard transformer oil containing dissolved gases as the feed solution. The results indicated that fluorinated carbon nanotubes (F-CNTs) were successfully modified onto the membrane surface, creating a re-entrant morphology composed of an intersecting nanotube network that mimics the hierarchical architecture of a loofah. The F-CNTs/Teflon AF/PVDF composite membrane exhibited exceptional omniphobicity, achieving contact angles of 168.2 ± 1.5° and 127.5 ± 1.0° towards DI water and mineral insulating oil, respectively. Additionally, the loofah-inspired composite membrane demonstrated robust thermal and ultrasonic stability. In oil-gas separation tests, the omniphobic membrane displayed a rapid response and high efficiency for dissolved gas extraction, achieving dynamic equilibrium within 64 min. Furthermore, the modification improved permeation efficiency by 25.6%. These results suggest that the developed omniphobic membrane is a promising alternative for oil-gas separation in the condition monitoring of oil-filled electrical equipment.
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Polymers
·
2026
·Vol. 18
·期 14
·1778
·
IF 5.8
Hanyang Zhao,Qingjun Jin,Hongwei Zhao,Yunkai Yang,Xiang Cheng,Xiujuan Ren,Hongxing Shi
To elucidate the formation of crosslinked products and their influence on material degradation, thermoplastic polyurethane (TPU) films were subjected to accelerated UV aging for various durations. Post-aging, the samples underwent Soxhlet extraction with tetrahydrofuran (THF), yielding an insoluble fraction—operationally defined as the crosslinked product—and a soluble uncrosslinked fraction. The mechanical properties, molecular weight distribution, swelling behavior, thermal properties, and chemical structure were analyzed. As UV aging progressed, both tensile strength and elongation at break deteriorated markedly. Concurrently, GPC analysis revealed a continuous decrease in molecular weight and a broadening of the molecular weight distribution, confirming that chain scission was the dominant degradation pathway. An insoluble network-like residue, defined as the crosslinked product, first appeared after 12 h of aging, with its content increasing to 22.9% after 300 h. Swelling tests showed that the crosslinked product had a high gel fraction, and its swelling ratio decreased from 196.8% to 157.4%, indicating the formation of a stable and increasingly dense network. DSC and TG results revealed restricted segmental motion, altered thermal transition behavior, and enhanced char-forming ability. The glass transition temperature of the crosslinked product exceeded that of the pristine TPU film. FTIR analysis showed variations in the -NH2, C=O, C-O, and C-O-C bands, confirming structural evolution within both hard and soft segments. In summary, UV aging of TPU involves a complex interplay among chain scission, degradation of soft segments, rearrangement of hard segments, evolution of hydrogen bonds, and radical-induced crosslinking. Crucially, the crosslinked network formed during aging plays a pivotal role in determining the macroscopic structural, thermal, and mechanical properties of the polymer.
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ANALYTICAL CHEMISTRY
·
2026
·Vol. 98
·期 29
·21624-21633
·
IF 7.3
Zong Ziang,Qu Chaomin,Ding Leping,Ma Xiao,Abulipizi Gulizhabaier,Fang Yanlun,Li Li,Xie Wei,Wang Jiajia,Zhou Juanjuan,Li Zhanjun
Chemi-
or bioluminescence assays have broad applications
in biomedical
analysis, yet they still suffer from a flash effect or difficulty
in maintaining time synchronization during high-throughput assays.
Persistent luminescence (PersL) nanoprobes are able to emit photons
for a rather long time without any chemical reactions and have promising
applications in developing a physi-luminescence assay. Herein, SiO 2 /Zn 2 SiO 4 :Mn,Yb,Ge nanoparticles (MYG,
Zn/Si/Mn/Yb/Ge molar ratio, 2/15/0.003/0.060/0.100) were synthesized
with PersL properties at 525 nm. Mesoporous silica nanoparticles were
used as a nanotemplate to control the size and morphology, which allowed
for gram-scale production (1.1277 g). Ge was found to be an efficient
codopant to realize the enhanced PersL of MYG. A hydrophobic azo dye,
Sudan III, was loaded onto the MYG surface to form a quenched MYG-S
nanoprobe. Under 254 nm UV illumination, Sudan III was oxidized by
H 2 O 2 , and PersL was recovered. The “OFF–ON”
PersL property of MYG-S was applied to develop a physi-luminescence
assay method for H 2 O 2 , glucose, and glucose
oxidase in serum. As the PersL of the samples in a 96-well plate was
activated by simultaneous UV illumination rather than by adding chemicals,
high-throughput photographic luminescence analysis was realized with
accuracy and repeatability. Our research indicates the promising applications
of PersL nanoprobes in developing a physi-luminescence assay.
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JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2026
·Vol. 46
·期 16
·118692
·
IF 6.3
Chengfan Yuan,Qiang Gao,Xinhui Geng,Wuju Wang,Liancai Xun,Puzheng Zhang,Ping Hu
C/SiC composites known for excellent high-temperature resistance and favorable mechanical properties are promising thermal protection materials. However, pores and microcracks from traditional processes significantly degrade their high-temperature oxidation resistance. Herein, we propose an integrated technique that combines coating preparation with matrix densification. Using this approach, a uniform SiC coating (50 μm thickness) was successfully prepared on C/SiC composites, while simultaneously achieving matrix densification. SiC-C/SiC composites exhibited superior oxidation resistance at 1000–1600 ℃. After 1600 ℃ oxidation, the mass loss rate decreased from 16.8% to 6%, and flexural strength (246 ± 24 MPa) was 2.5 times that of C/SiC composites (91 ± 37 MPa). Additionally, SiC-C/SiC composites demonstrated excellent oxidation and ablation resistance at 1600–1800 ℃ compared with conventional C/SiC composites. This technique allows component design to be tailored to practical requirements, providing a feasible method for efficient preparation of coatings.
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Food Chemistry-X
·
2026
·
IF 9.2
Guili Huang,Yu Shi,Xinyao Quan,Qianshuo Shao,Su Yan,Siyao Sui,Jiajia Ma,Jiayu Qian,Weiming Chai,Yuning Wang
Volatile Organic Compounds (VOCs) are critical determinants of loquat flavor quality and cultivar differentiation, but comprehensive characterization and rapid detection remain challenging. This study aimed to establish a robust approach for discriminating three loquat cultivars and evaluating their flavor quality by integrating electronic nose (E-nose) technology and Comprehensive Two-Dimensional Gas Chromatography–Time-of-Flight Mass Spectrometry (GC × GC-TOF-MS). GC × GC-TOF-MS was used for VOC profiling, while E-nose was applied for rapid fragrance characterization, with orthogonal partial least squares-discriminant analysis (OPLS-DA) and correlation analysis performed to identify discriminatory compounds and sensor-VOC relationships. GC × GC-TOF-MS identified over 2000 volatile compounds across three loquat cultivars. OPLS-DA further screened 22 discriminatory VOCs with variable importance in projection (VIP) values >1, which contributed to aroma hierarchy shifts among cultivars. E-nose sensors W1W and W1S showed high sensitivity to floral-scent-related VOCs, serving as key factors for distinguishing fragrance quality. Notably, E-nose detection results exhibited good consistency with GC × GC-TOF-MS data, and W1W/W1S sensors were significantly positively correlated with key VOCs. These findings demonstrate that the integration of E-nose and GC × GC-TOF-MS offers complementary advantages for comprehensive VOC characterization and cultivar discrimination. The established approach provides a scientific basis for optimizing loquat quality standards by incorporating VOC-driven biochemical authenticity and a potential efficient method for rapid, non-destructive assessment of postharvest flavor quality in loquat cultivars. These results facilitate quality control and cultivar authentication in the fruit industry.
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ANALYTICAL CHEMISTRY
·
2026
·Vol. 98
·期 30
·22374-22386
·
IF 7.3
Bu Zhijian,Wang Linjie,Yao Yuxuan,Chen Xinyu,Tang Zheng,Du Dan,Wu Shengtao,Lin Yuehe,Liang Hao,Niu Xiangheng
As alternatives to bioenzymes, nanozymes find promising
applications
in biochemical sensing thanks to their recognized superiorities, but
their lack of specific interactions with targets of interest seriously
hinders the exploration of selective analytical strategies when no
external receptors are employed. Additionally, most nanozymes exhibit
poor catalytic efficiency, much lower than their natural counterparts,
thus restricting the sensitivity of detection. Different from the
explored “turn-off” analytical principle relying on
the coordination of the target with a nanozyme catalytic product,
here we proposed an analyte-unique “signal-on” strategy
based on the direct target–nanozyme interaction for the sensitive
sensing of uranyl via temperature-programming the peroxidase (POD)-mimetic
activity of CoO x . As wet-chemical temperature
increased, the oxygen vacancy (O V ) content on CoO x surfaces exhibited a volcano-type trend, and its
catalytic efficiency correlated with the former positively. UO 2 2+ was found to stimulate the POD-like activity
of CoO x via increasing O V ,
exhibiting excellent specificity against other common species. Leveraging
the unique CoO x –UO 2 2+ interaction and the temperature-programmed activity of CoO x , we validated a “light-up”
colorimetric approach for UO 2 2+ selective determination,
achieving a wide detection range (0.01–2 μM) and a low
limit (5 nM). A deployable device based on intelligent reading was
further fabricated to enable on-site monitoring of the analyte. Our
work provides a “signal-on” nanozyme sensing strategy
for the quantification of UO 2 2+ , featuring specific
response, catalytic signal amplification, and free from bioreceptors.
Also, it proves a facile route to achieve dual modulation of enzyme-mimetic
activity and analyte response for broader applications.
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Journal of the American Chemical Society
·
2026
·Vol. 148
·期 28
·29854-29863
·
IF 16.6
Li Ke,Yuan Guanghui,Cao Yingchang,Wang Jixuan,Jin Zihao,Zhao Xiaoyang,Hao Fang,Liu Keyu,Jia Zhenzhen,Xi Kelai,Liang Chao,Zare Richard N.
Efficient and environmentally benign recovery of precious metals from complex aqueous systems remains a central challenge. Here, we demonstrate that thermally generated water microdroplets at oil–water interfaces function as highly reactive interfacial microenvironments that enable selective gold reduction and macroscopic particle growth without external reductants, catalysts, or sorbents. Mild heating of oil–water mixtures containing Au ions produces abundant interfacial water microdroplets (5–50 μm) that continuously generate redox-active species, including solvated electrons, hydrogen atoms, and hydroxyl radicals, thereby driving reduction reactions that do not occur in bulk water. Selectivity is governed by a dual criterion: (i) thermodynamic accessibility above the solvent reduction limit imposed by hydrogen evolution and (ii) chemical stability of the reduced phase under strongly acidic conditions. Au satisfies both requirements, and extension experiments with Pt and Ag validate the broader applicability of this principle, whereas competing base metals are excluded either by redox constraints or by instability of their reduced forms. Dynamic microdroplet coalescence and rupture further couple redox chemistry with particle growth, promoting nanoparticle aggregation into micrometer- to millimeter-scale Au particles that are readily separated. The oil phase is recyclable over multiple cycles, enabling high-yield gold recovery with minimal inputs and waste generation. These findings, validated across capillary, glass-vial, and upgraded reactor systems, establish interfacial microdroplet chemistry as a scalable framework for selective precious-metal recovery.
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危险品化学品经营许可证（带存储）