DYES AND PIGMENTS
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2025
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IF 4.2
Ning Gao,Xi Chen,Haoran Wu,Xuelei Pang,Xudong Yu
Chemical production requires the rapid and highly sensitive detection of trace volatile substances. Although the commonly used multichannel combined detection methods are quantitatively accurate, they require the joint operation of multiple devices and are unsuitable for on-site detection. Fluorescence detection technology has attracted considerable interest in the sensing field owing to its high sensitivity, low cost, and multicolor changes, although cost reduction requires the preparation of portable and sensitive on-site detection materials. In this paper, single-wavelength-excited complexes are integrated into a rare-earth organic–inorganic hybrid thin film that senses and identifies multiple target analytes. The volatilization characteristics of the gas generated during production were simulated on five common acidic and amine volatile substances as target compounds, verifying the detection ability of the material. By virtue of their different quenching mechanisms—energy competition, hydrogen bonding, and energy resonance—the channels produce different responses to each volatile substance, causing changes in the fluorescence color. As the detected substances generate different fluorescence-change processes and final colors, a change path similar to a fluorescence fingerprint is formed, enabling qualitative and quantitative analyses. Exploiting the flexibility of the thin film and its responses to different target substances, a system that encrypts and decrypts information was then designed. The proposed lab-on hybrid material simplifies the multitarget identification process and has substantial potential for various sensing applications.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
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IF 9.7
Zhihong Liu,Jiale Liu,Jin Wang,Ping Lu,Shishun Xu,Yi Lu,Xiaofei Li,Qiaowen Zhang,Guocan Jiang,Zhengquan Li
The urgent need for clean energy has driven extensive research into efficient photocatalytic systems for CO 2 reduction. Lead-free Cs 3 Bi 2 Br 9 perovskites are particularly promising in this context, yet the photocatalytic performance of single-component Cs 3 Bi 2 Br 9 is often hindered by its narrow absorption in visible-light range. Here, we present a visible-to-near-infrared (vis-to-NIR) responsive Cs 3 Bi 2 Br 9 /Bi 19 Br 3 S 27 Z -scheme heterojunction photocatalyst, achieved by creating a high-quality interface upon in-situ growth. This heterojunction design markedly boosts CO₂-to-methane conversion, achieving electron consumption rates that are 70 and 124 times higher than those of pristine Cs 3 Bi 2 Br 9 and Bi 19 Br 3 S 27 , respectively. Mechanistic studies indicate that the formation of a strong built-in electric field at the interface facilitates efficient charge separation and transfer, significantly boosting photocatalytic performance. Notably, the photocatalytic performance of Cs 3 Bi 2 Br 9 /Bi 19 Br 3 S 27 heterojunction surpasses that of most lead-free halide perovskite photocatalysts. Our findings offer a new paradigm for interface engineering in photocatalysis and advance the development of vis-to-NIR responsive perovskites for sustainable energy conversion.
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POLYMER INTERNATIONAL
·
2025
·
IF 3.6
Kaiwen Mou,Fancheng Meng,Xiaomeng Li,Zixing Zhang,Yang Jiao,Bai Xue,Fan Zhang
Assembling various organic building blocks through carbon–carbon double-bond linkages is highly efficient for constructing high-performance organic semiconductors. Microporous/nanoporous structures can provide robust mass collection accommodation and reactive reaction sites. Here, we report the synthesis of a series of vinylene-linked conjugated porous polymers by Knoevenagel condensation of a tetratopic monomer tetramethyl-2,2′-bipyridine with different ditopic monomers. The presence of the 2,2′-bipyridine building blocks created π-extended conjugation polymeric frameworks, substantial n -type semiconducting properties and coplanar conformation. These frameworks also exhibit strong electron-deficient characters and finely tuned energy levels. Upon visible light irradiation, they exhibited the highest activity of hydrogen peroxide generation up to 1413 μmol h −1 g −1 in pure water. Their excellent recycling and reusability suggest their potential applications in green chemical transformation. © 2025 Society of Chemical Industry.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
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IF 6.3
Jing Fan,Shizhen Gao,Yanan Yang,Yuming Dong,Qi Qi,Fenhong Song,Jie Liu
As the world grapples with energy shortages and environmental challenges, photocatalytic CO 2 reduction has emerged as a game-changing solution in sustainable technology. By converting carbon dioxide into high-value hydrocarbon fuels, this innovative approach not only helps combat climate change but also paves the way for a cleaner, greener energy future. Developing high-performance, low-energy-consumption, and long-term stable photocatalysts remains a critical challenge in advancing sustainable technologies. In this study, the plate-like NiO supported ZnCdS nanoparticles with high stability is prepared by solvothermal method. Compared with ZnCdS and NiO, the photocatalytic properties of the composite materials are obviously improved. As a consequence, the 12NiO/ZnCdS composite exhibited CO evolution rates of 71.13 μmol·g -1 ·h -1 , 6.8 times higher than those of pristine ZnCdS. The selectivity toward CO reached 75%. Characterization results confirmed the successful synthesis of the catalyst, where the interfacial interaction between composite components formed a built-in electric field. This mechanism afforded more active sites, enhanced light absorption properties, and promoted carrier migration rate under photoexcitation. The efficient charge separation not only suppressed photo-corrosion but also enhanced the catalyst's reductive capacity for CO 2 reduction. This study establishes a novel design paradigm for engineering highly stable ZnCdS-based photocatalysts toward solar-driven CO 2 conversion, offering compelling inspiration for material innovation. Furthermore, the fundamental principles elucidated herein provide a valuable framework to guide future exploration in related energy-transduction technologies.
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International Journal of Applied Ceramic Technology
·
2025
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IF 2.3
Zhenlin Wang,Anze Shui,Hulei Yu,Mei Cai
Photocatalysis presents a promising solution for environmental remediation, though conventional photocatalysts remain constrained to the ultraviolet and partially visible regions of the solar spectrum. To address this limitation, we developed a NaYF 4 :Yb,Er/BiOBr (N/B) composite photocatalyst, leveraging upconversion luminescence to convert near-infrared photons into visible light while utilizing BiOBr's narrow bandgap for enhanced visible-light absorption. The composite photocatalyst was fabricated via a two-step solvothermal approach and evaluated for the degradation of methyl orange (MO). Remarkably, the N/B-120°C sample demonstrated superior photocatalytic activity, achieving degradation rates 2.4- and 5.4-fold higher than those of pristine BiOBr and commercial TiO 2 (P25), respectively. This enhanced performance is attributed to synergistic effects including an increased specific surface area (23.96 m 2 /g for N/B-120°C vs. 16.28 m 2 /g for BiOBr), reduced charge transfer resistance (as evidenced by electrochemical impedance spectroscopy (EIS) Nyquist plots), elevated oxygen vacancy concentration (as verified by x-ray photoelectron spectroscopy [XPS]), and extended solar spectral utilization range (400–980 nm). This work presents a viable strategy to improve the efficiency of photocatalysis.
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EUROPEAN POLYMER JOURNAL
·
2025
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IF 6.3
Xiaoguang Qiao,Mengna Feng,Mengjie Zhou,Wenjie Zhang,Yanjie He,Ge Shi,Xinchang Pang
The development of efficient and environmentally benign strategies for controlled radical polymerization remains a critical challenge in polymer chemistry. Herein, we report a novel approach utilizing phosphorus and nitrogen codoped carbon dots (PN-CDs) as catalysts for near-infrared (NIR) light-induced atom transfer radical polymerization (ATRP) in aqueous media. Owing to the absorption in the near-infrared (NIR) region, PN-CDs can generate electrons under excitation by an 808 nm laser, thereby initiating aqueous-phase atom transfer radical polymerization (ATRP) through electron transfer with Cu(II) ions. The aqueous-based NIR-ATRP process demonstrates remarkable versatility, producing well-defined polymers with narrow molecular weight distributions ( Đ <1.25). And ∼ 90 % monomer conversion could be achieved within 30 min, illustrating the high polymerization efficient of NIR-ATRP in aqueous media. Excellent temporal control of the polymerization and the chain fidelity of polymers were illustrated by light-switching experiment and chain extension, separately. The polymerization was also performed in the presence of opaque barrier (i.e. pork skin) to show the penetration advantage of NIR-ATRP. Moreover, the penetrating NIR-ATRP was further applied for deep-layered healing. This work establishes a sustainable platform for precision polymer synthesis, with potential applications in functional hydrogels and functional coatings, while advancing the design of carbon-based nanomaterials for photo-polymerization technologies.
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ACS Applied Materials & Interfaces
·
2025
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IF 8.2
Shuwen Huang,Xiaoming Mo,Shulin Han,Huasong Liang,Lei Cai,Sheng Cao,Bingsuo Zou,Jinju Zheng,Jialong Zhao
High-performance pure-red perovskite light-emitting diodes (PeLEDs) are promising candidates for optoelectronic applications due to their remarkable photophysical properties. However, the unstable surface and insulating long-chain capping ligands of perovskite quantum dots (QDs) pose challenges to their commercialization by compromising stability and performance. Here, a simple but effective approach was demonstrated to synthesize highly stable red CsPbI3 QDs by introducing a multifunctional molecule, phenformin hydrochloride (PhenHCl), as an additive ligand. While the biguanide functional group in PhenHCl formed multiple hydrogen-bond interactions with the lead halide octahedron, the excess Cl– anions compensated for the iodine vacancies and eliminated trap states in the CsPbI3 QDs. The synergistic effect of the biguanide functional group and halogen compensation significantly passivated surface defects of the red CsPbI3 QDs, yielding a photoluminescence (PL) quantum yield of 98.6% and excellent ambient stability with 90% PL intensity retention over 80 days. The resulting pure-red PeLEDs based on the PhenHCl-treated CsPbI3 QDs were demonstrated to show a remarkable enhancement in the electroluminescence performance at around 649 nm, with an external quantum efficiency of 13.38%, and a maximum luminance of 2159 cd m–2. Our findings in this work provide an avenue by modulating the surface chemistry of CsPbI3 QDs to enhance the performance of pure-red PeLEDs.
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RSC Advances
·
2025
·Vol. 15
·期 24
·19034-19042
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IF 4.6
Songlu Yao,Jianhong Gong,Xiaoqiao Zhang,Xiaoli Wei,Di Wang,Tengwei Chen
Considerable energy consumption and high CO2 emissions of steam cracking have driven the exploration of alternative methods for light olefins production from naphtha. In this context, we propose a novel dehydrogenation cracking approach as an alternative route for naphtha conversion. By employing a perovskite-based redox catalyst, CaMnO3@Na2WO4, in combination with zeolite-based catalyst, model compound n-octane undergoes dehydrogenation to form octene, significantly reducing the activation energy required for C–C bond cleavage. This approach enhances the yield and selectivity of light olefins. When mixing ratio of dehydrogenation catalyst in tandem catalysis is 5%, the conversion reaches 90.07%, and the total light olefins yield is 47.90%. The influence of factors such as reaction temperature, coupling mode and mixing ratio were also demonstrated. Comparing to standalone zeolites, 15% higher olefin yields were obtained with tandem mixed catalysts, demonstrating the excellent dehydrogenation cracking ability. The optimized dehydrogenation temperature at 450 °C, could provide an optimal reaction environment for this elementary dehydrogenation reaction and decrease the energy consumption. Synergetic effect of zeolite-based catalyst with different mixing ratio of CaMnO3@Na2WO4 also leads to tunable P/E ratio. Theoretical calculations of reaction routes provided valuable insights for the further development and optimization of naphtha conversion processes.
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Small
·
2025
·
IF 12.1
Jing Yang,Ruishu Xu,Haiyan Li,Hongwen Tao,Houen Zou,Wenjun Zeng,Haowen Huang
Gold nanoclusters (AuNCs) exhibit unique physicochemical properties but their functional transitions under external stimuli remain underexplored. This study reveals that ultraviolet (UV) irradiation triggers structural evolution in AuNCs, causing fluorescence loss while activating dual enzyme-mimetic activities. UV-induced particle enlargement and surface restructuring endow AuNCs with peroxidase-like (POD-like) and laccase-like functionalities. The POD-like activity enables sensitive glucose detection in human serum, while the laccase-like capability facilitates simultaneous detection and degradation of phenolic pollutants in wastewater. These light-responsive transformations demonstrate AuNCs' dynamic adaptability, bridging their intrinsic fluorescence and catalytic properties. The findings elucidate photo-regulation mechanisms in nanomaterial functionality, proposing a novel strategy for designing multifunctional nanosystems applicable in biosensing and environmental remediation. This work advances the development of adaptive nanomaterials with programmable features for biomedical and ecological applications.
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Inorganic Chemistry Frontiers
·
2025
·
IF 6.4
Quanlin Chen,Yangbin Xu,Qingming Wu,Yanxing Feng,Zhiqiang Huang,Hai Jia,Shaoming Ying,Xiaohui Huang
Accurate and chip-integrated full-Stokes polarization detection is essential for advancing multifunctional optoelectronic systems. However, conventional approaches relying on optical filters often suffer from significant optical losses and poor sensitivity under weak-light conditions. Here, we report an efficient full-Stokes polarimeter based on a 1D chiral-polar perovskite, (R/S-NEA)PbI3. The intrinsic anisotropic and chiral structure of the (R/S-NEA)PbI3 single crystal enables both high linear and circular polarization sensitivity. Moreover, the polar structure induces a giant bulk photovoltaic effect (BPVE) of up to 8 V, enabling efficient carrier extraction under zero bias and significantly suppressing noise currents to the ∼fA level, resulting in an exceptional specific detectivity of 4.1 × 1013 Jones. These combined properties enable accurate, self-powered full-Stokes polarization detection, with the fabricated single-crystal-based polarimeter achieving an average Stokes parameter error (ΔS1–3) of less than 3%. Notably, the polarimeter demonstrates an ultra-low detection limit of 0.4 μW cm−2, representing the highest sensitivity among comparable polarimeters reported to date. With easy on-chip integration, the polarimeter showcases precise full-Stokes imaging capabilities.
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CERAMICS INTERNATIONAL
·
2026
·
IF 6
Nasi Yu,Wenhua Li,Jiyou Zhong
Near-infrared phosphor-converted light-emitting diodes (NIR pc-LEDs) have an extensive range of applications within multiple fields, such as bioimaging, night vision and non-destructive examination. Therefore, developing broadband, low-cost, and efficient NIR phosphors capable of satisfying the demands of the above applications is desired. In this work, a series of inexpensive phosphate Na 2 AlTi(PO 4 ) 3 :Cr 3+ phosphors were developed. This material shows a broadband NIR emission covering 700-1200 nm with emission peak located at 830 nm and a full width at half maximum (FWHM) of 152 nm under 470 nm excitation. Moreover, the photoluminescence quantum yield (PLQY) can be optimized to 79.1%, suggesting a high efficiency among octahedral Al 3+ -containing NIR materials. Finally, a prototype NIR pc-LED device was fabricated via directly coating the InGaN blue LED chip with the optimized Na 2 AlTi(PO 4 ) 3 :Cr 3+ phosphor. The NIR output power of the device was determined to be 17.24 mW at 100 mA driving current, and the corresponding NIR photoelectric conversion efficiency was 7.51%, indicating the excellent output performance, and good potential in practical applications.
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FOOD CHEMISTRY
·
2026
·
IF 10.4
Shuo Zhang,Yunlong Wang,Mengjun Wang,Chongjiang Cao,Zhiping Yang,Linyu Nian
Imbalances in moisture and oxygen in food packaging's microenvironment easily cause pathogenic bacteria proliferation, accelerating spoilage. Utilizing visible light from the storage environments as an excitation source to achieve environmentally adaptive antibacterial action represents an effective strategy. In this study, quantum dots-modified metal-organic framework composites (QDs@UIO-66) were synthesized and a visible light-responsive antimicrobial packaging (QUAFF) was constructed using whey protein isolate amyloid fibers as the substrate. QDs@UIO-66 forms a Z -scheme heterojunction and has a higher reactive oxygen species (ROS) production capacity. The antibacterial rate of QUAFF against E. coli reached 99.87% under visible light irradiation. Exogenous ROS disrupt bacterial cell membranes, cause intracellular protein/nucleic acid leakage, with 1 O₂ playing a core role. Concurrently, QUAFF exhibited excellent mechanical properties, laying the foundation for its practical application. In the preservation verification of postharvest tomatoes, QUAFF delayed the deterioration of tomato quality and extended their shelf life to 20 days.
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