INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2024
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IF 3.8
Jing Zhang,Xiaolong Yao,Yue Zhao,Rengui Li,Xiaofei Chen,Haibo Jin,Huangzhao Wei,Lei Ma,Zhao Mu,Xiaowei Liu
Wastewater treatment, especially the efficient degradation of contaminants such as m-cresol, remains a pivotal challenge. This study investigates the application of artificial neural networks (ANN) in predicting total organic carbon (TOC) removal rates from m-cresol-contaminated wastewater by using the ultraviolet (UV)-Fenton oxidation process. Six key variables, namely, Fe2+ dosage, H2O2 dosage, catalyst quantity, reaction time, pH, and substrate concentration, were employed as inputs to the ANN model. Leveraging this multivariable input and a comprehensive data set, the ANN model projected a maximum TOC removal rate of 87.12%, validated by an efficiency of 86.26% achieved through experiments under the derived optimal conditions: Fe2+ dosage at 16.09 mg/L, H2O2 dosage at 1.40 mg/L, catalyst quantity at 0.11 g/L, reaction time of 29.80 min, initial pH of 3.66, and substrate concentration of 50 mg/L. Comparative analysis with other machine learning algorithms further revealed that the ANN model notably outperformed linear regression, support vector regression, and random forest in terms of precision. This work paves the way for resource-optimized experimental designs, fostering real-time wastewater monitoring and refining advanced oxidation process proficiency in industrial applications.
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ENVIRONMENTAL POLLUTION
·
2024
·
IF 7.6
Haiyan Wang,Sunxinyi Wang,Zixuan Jia,Hao Li,Jiayu Wang,Teng Zhang,Jiayue Dong,Peizeng Yang,Jing Chen,Yuefei Ji,Junhe Lu
Isoproturon (IPU), a widely utilized phenylurea herbicide, is recognized as an emerging contaminant . Previous studies have predominantly attributed the degradation of IPU in natural waters to indirect photolysis by natural organic matter (NOM). Here, we demonstrate that nitrite (NO 2 − ) also serves as an important photosensitizer that induces the photo-degradation of IPU. Through radical quenching tests, we identify hydroxyl radicals (•OH) and nitrogen dioxide radicals (NO 2 • ) originating from NO 2 − photolysis as key players in IPU degradation, resulting in the generation of a series of hydroxylated and nitrated byproducts. Moreover, we demonstrate a synergistic effect on the photo-transformation of IPU when both NOM and NO 2 − are present in the reaction mixture. The observed rate constant ( k obs ) for IPU removal increases to 0.0179 ± 0.0002 min −1 in the co-presence of NO 2 − (50 μM) and NOM (2.5 mg C /L), surpassing the sum of those in the presence of each alone (0.0135 ± 0.0004 min −1 ). NOM exhibits multifaceted roles in the indirect photolysis of IPU. It can be excited by UV and transformed to excited triplet states ( 3 NOM*) which oxidize IPU to IPU •+ that undergoes further degradation. Simultaneously, NOM can mitigate the reaction by reducing the IPU •+ intermediate back to the parent IPU. However, the presence of NO 2 − alters this dynamic, as IPU •+ rapidly couples with NO 2 • , accelerating IPU degradation and augmenting the formation of mono-nitrated IPU. These findings provide in-depth understandings on the photochemical transformation of environmental contaminants , especially phenylurea herbicides, in natural waters where NOM and NO 2 − coexist.
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SENSORS AND ACTUATORS B-CHEMICAL
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2025
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IF 7.7
X.L. Xu,M.Y. Wang,H.T. Jiang,W.W. Liu,G.R. Sun,W. Ma
The high working temperature of metal oxide semiconductors hinders its application in flexible sensing devices. In this paper, a UV-activated flexible sensor operating at room temperature (RT, 25℃) is first reported based on SnO 2 nanoparticles embedded in photo-catalytic TiO 2 nanorods matrix. The UV-irradiated SnO 2 /TiO 2 sensor exhibits excellent selectivity (109 ppm, 37 %) to CH 3 COOH and reduced response/recovery time (12 s/41 s). The excellent RT flexible sensing properties are attributed to the synergistic action of UV-365 nm irradiation, the hetero-embedded microstructure and innovative terpineol binder. UV irradiation generates substantial e h υ − - h h υ + pairs, which serve as active sites to promote the chemisorption and redox reactions. Additional activation energy helps to improve adsorption/desorption kinetics. The heterojunction provides abundant channels, facilitating the separation and transfer of photogenerated carriers. The effect of relative humidity (RH) and temperature variations around RT on the sensor response towards CH 3 COOH are investigated. Under low-RH (35 %-45 %) and high-RH conditions (above 45 %), 1 % RH change has the same effect on the sensor response than 7.2 ppm and 59.4 ppm CH 3 COOH, respectively. 1°C temperature change exhibits the same effect than 17.9 ppm CH 3 COOH. Such a noise effect is by far not suitable for real-world applications. In addition, the response to 109 ppm CO reaches up to 89.5. Therefore, the sensor is seriously disturbed by CO and further research is needed. Above all, UV assistants, hetero-composites combining with innovative microstructure design are expected to be a collaborative enhancement strategy for MOSs-based RT flexible sensors.
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DYES AND PIGMENTS
·
2024
·
IF 4.1
Yongjie Wang,Qingzhou Bu,Dongshuo Li,Shuai Yang,Li Li,Guotao Xiang,Sha Jiang,Ying Chang,Chuan Jing,Xianju Zhou,Lev-Ivan Bulyk,Andrzej Suchocki
Near-infrared phosphor-converted light-emitting diodes (NIR pc-LEDs) are compact light sources of great interest for NIR spectroscopy applications. Beyond typical Cr 3+ -activated NIR-emitting phosphors, there exists a strong demand for Cr 3+ -free alternatives with high efficiency and broadband emission to rich the landscape of NIR luminescent materials and extend their range of application fields. Here, we report a series of Fe 3+ -activated Ca 3 Ga 2 Sn 3 O 12 garnet-type phosphors exhibiting broadband NIR emission in the 650–1000 nm range attributed to 4 T 1 (G) → 6 A 1 (S) transition, with a maximum at 754 nm and a FWHM of 89 nm upon UV excitation. The spectroscopic results were analyzed according to the Tanabe-Sugano theory from which the crystal field parameter D q and Racah parameters B and C were obtained for the octahedrally coordinated Fe 3+ ion. Notably, the NIR persistent luminescence lasting over 1 h was detected following UV or X-ray irradiation. The possible mechanism involving electron traps was proposed to explain the observed persistent luminescence. Furthermore, a NIR pc-LED was fabricated by coating synthesized phosphor on a UV chip, and its performance was evaluated to assess its potential suitability as a NIR light source. Our discovery of novel type of nontoxic Fe 3+ -activated broadband NIR luminescence phosphors with efficient NIR persistent luminescence paves the way for discovering Cr 3+ -free multifunctional NIR luminescence materials, thereby expanding their application possibilities.
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Journal of Materials Chemistry C
·
2025
·
IF 5.1
Sikai Wang,Ziyang Wu,Lei Sun,Jinjun Ren,Xiaoxin Zheng,Jianzhong Zhang,Jing Ren
To overcome the challenges associated with conventional ultraviolet-C (UV-C) light-emitting devices—such as toxic mercury, aging of organic adhesives, and various stability concerns—an efficient UV-C emitting nano-glass composite (nano-GC) has been developed. The transparent nano-GCs embedded with Pr3+-doped Li(Al7B4O17) nanocrystals (NCs), achieved through precise modulation of the fluoride content in the glass matrix network. The unique architecture of these nano-GCs synergistically combines the high luminescence efficiency characteristic of crystalline phase with the robustness of glass. Upon excitation by deep-UV, X-ray and high energy electron-beam, the nano-GCs exhibit pronounced 5d-4f interconfigurational emissions of Pr3+, with their emission profile closely aligning with the germicidal effectiveness curve. Although the transmittance of nano-GCs is reduced compared to that of precursor glass (PG), their UV-C luminescence output is significantly enhanced—e.g., a sixfold increase under e-beam pumping. These nano-GCs achieve an impressive photoluminescence quantum yield of up to 25.93%, surpassing most previously reported Pr3+ doped glasses and nano-GCs. Moreover, the nano-GCs exhibit robust X-ray excited luminescence, with an intensity more than twice that of the commercial Bi4Ge3O12 (BGO) crystal, and exhibit a highly linear response to X-ray dose, accompanied by a decay time of 24.13 ns under γ-ray excitation. Collectively, this study presents a novel approach to the development of disinfection phosphors and fast scintillators.
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JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
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IF 2.7
Songbin Wang,Xinlei Gao,Longfei Weng,Chunqing Huo,Xueyu Du,Xueqiong Yin
As one of the five major engineering plastics, polycarbonate (PC) has been applied in many industrial fields. However, its poor wear- and UV- resistance greatly limit its further promotion. Inspired by the dual benefits of inorganic–organic hybrid filler, in this study, we developed a novel type of catechol group- and nano silica-containing reinforcing filler (CFNS) for the preparation of wear- and UV-resistant PC-based composite films. With a low level of filler content (1%), the coefficient of friction (COF) was distinctly reduced from 0.14 (neat PC film) to 0.06 (composite film), benefiting from a wear-resistant surface layer. On the basis of ensuring high and stable transmittance for visible light, the composite films also exhibit strengthened capacity of UV shielding for the waveband from 293 to 400 nm. In addition, the general performance of composite films including tensile strength, tensile modulus, and thermal stability have also been improved in different degrees. Therefore, the composite films reinforced by CFNS are highly promising for a wide range of applications, ascribed to their improved general properties as well as two additional functions of wear- and UV-resistance.
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FOOD CHEMISTRY
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2025
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IF 9.8
Hong Duan,Ning Zhang,Lingyan Zheng,Baoguo Sun,Gang Chen
s Food is prone to spoilage due to light and microbial exposure. To address this issue, Polystyrene microspheres @ Polydopamine / Diethyl ferulate / AgNPs (PS@PDA/DEF/Ag) was synthesized via copper-catalyzed azide/alkynyl cycloaddition reaction (CuAAC) and in-situ reduction. Subsequently, it was incorporated into a polyvinyl alcohol (PVA) matrix to fabricate PS@PDA/DEF/Ag/PVA multifunctional films. Derivative thermogravimetric (DTGA) analysis showed the exothermic peak of PS@PDA/DEF/Ag/PVA-4 wt% increased from 265.3 °C to 334.5 °C compared with PVA film. At concentrations exceeding 0.5 wt%, the UV shielding rate of the composite films reached at least 94.0%. The antibacterial experiments revealed that PS@PDA/DEF/Ag/PVA-4 wt% exhibited inhibition zone diameters of 3.8 ± 0.3 mm and 3.2 ± 0.3 mm against E. coli O157:H7 and S. aureus . Furthermore, the multifunctional films significantly prevented milk photooxidation for 3 days, jujubes brownish and strawberries decay for 7 days, demonstrating their effectiveness in antibacterial and UV-blocking food packaging.
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Additive Manufacturing
·
2025
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IF 11.1
Mei-Ling Yang,Yi-Tian Yang,Guo-Xiang Zhou,Zhi-Hua Yang,De-Chang Jia,Yu Zhou
Photocuring printing technology is extensively applied in the manufacturing complex structure for electrical components owing to its excellent printing flexibility and efficiency. However, the limited penetration depth of UV photocured silver pastes (UVSPs), resulting from the complex interaction between incident light and conductive fillers, restricts circuit fabrication. In this work, we optimized the selection of flaky silver particles as UVSP fillers instead of the conventional spherical ones by simulating the penetration distribution of incident light in UVSPs with various morphologies through the finite element method. The fluidity, polymerization behavior, and printing properties of the UVSPs were investigated. As a result, flaky particles filled UVSP with the unique light penetration properties can be used for high-precision film printing, and the printing linewidth accuracy can be improved by over 20 μm under the same exposure conditions. Furthermore, the conductive film with flaky particles effectively prevented curling and peeling during low-solid-content sintering and exhibits a good electrical conductivity of 1.26×10 6 S/m. This study provides valuable technical guidance for the rapid preparation of low-cost, high-precision circuit printing using photocuring printing technology, which significantly reducing the manufacturing cost of printed electronic components.
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JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY
·
2025
·Vol. 38
·期 1
·21-27
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IF 0.7
Rui Hou,Aojie Liu,Chao Lv,Ning Zeng,Zezheng Zhang,Siyi Liu,Qin Li,Akira Watanabe,Gang Jiang,Jinguang Cai
High-conductive ultra-thin metallic wires, as basic structures in electronic devices, are highly demanded but challenging to improve the integration level and miniaturization of the devices. In this study, an efficient laser direct writing approach was proposed and aimed at preparing Ag wires with widths as narrow as 2 μm by irradiating the AgNO3-polymer film with a compact blue-violet laser. A comprehensive exploration of various parameters was conducted, leading to the optimization of Ag wires exhibiting an impressively low resistivity of 2.35×10-7Ω·m. In addition, an Ag wire prepared by laser direct writing on the flexible PEN substrate shows high tolerance to the inward and outward bending, demonstrating excellent flexibility and mechanical stability. On this basis, a UV-light detector based on the laser-irradiated interdigitated Ag patterns and sensitive CdS nanorods was demonstrated with high sensitivity and fast response.
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ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Honglin Li,Xin Li,Mengyao Pan,Zhenming Ding,Jiupeng Zhao,Ana Sofia Oliveira Henriques Moita,Yao Li,Lorenzo Pattelli,Hongbo Xu
Traditional radiative cooling technology, relying on polymers with high solar reflectivity and infrared (IR) emissivity, struggles to fulfill the requirements for building durability and fire resistance because of the polymers' inadequate ultraviolet (UV) aging resistance and flammability. To address this challenge, this work develops a fully inorganic and flexible ceramic membrane exhibiting ultra-high reflectance of 97.8% in the 0.25–2.5 µm solar spectrum and an IR thermal emissivity of 92.3% in the 8–13 µm atmospheric transparent window (ATW) band, for a maximum daytime sub-ambient temperature drop of 9.2 °C and a net radiative cooling power of 128.52 W m −2 . At the same time, the flexible ceramic membranes can endure temperatures up to 1000 °C, are non flammable, and exhibit only a 1.2% decrease in solar band reflectance after 552 h of continuous 0.7 kW m −2 UV irradiation. The excellent UV, acid, and fire safety properties of the electrospun ceramic membrane hold promise for their long-term use in outdoor and extreme environments.
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ACS Applied Polymer Materials
·
2025
·
IF 4.7
Yunhe Zhang,Gaihuan Ren,Gaowei Nie,Shenpeng Hu,Wen Sun,Dongxiang Li,Zhenhua Cui,Yiming Li,Dongxu Lu,Hongqin Yu,Jianxin He
The demand for multifunctional, highly waterproof, and breathable nanofiber membranes is high due to their extensive applications in personal protection, outdoor equipment, and portable electronics. Nevertheless, the fabrication of such multifunctional waterproof-breathable membranes (WBMs) based on fluorine-free raw materials and a straightforward preparation process presents considerable challenges. Herein, this work proposes an easy and effective one-step electrospinning method for the fabrication of fluorine-free and multifunctional polyurethane (PU)/poly(styrene-b-butadiene-b-styrene) (SBS)/2-hydroxy-4-n-octyloxybenzophenone (UV531)/TiO2/stearic acid (SA) WBMs (PSUTS WBMs). The synergistic effect of organic absorber UV531 and inorganic blocker TiO2 provides the PSUTS nanofiber membrane with excellent UV protection. The incorporation of hydrophobic SA results in an optimized pore structure and surface hydrophobicity of the PSUTS WBMs, thereby enhancing their waterproof, breathable, and mechanical properties. By adjusting the amount of SA, eco-friendly and multifunctional PSUTS WBMs were systematically prepared, exhibiting exceptional UV protection performance (UPF, 399.45), high waterproof performance (76.2 kPa), satisfactory moisture breathability (5.23 kg m–2 d–1), and adequate tensile strength (5.4 MPa) and elongation at break (136.2%). The multifunctional PSUTS WBMs are expected to be utilized in various applications, providing optimal performance.
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INDUSTRIAL CROPS AND PRODUCTS
·
2025
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IF 6.2
Pei-Ru Zhou,Yu Chai,Jia-Tong Chen,Xiao-Ping Zheng,Yan-Zhen Zheng
The valorization of agricultural waste is critical for sustainable development, yet challenges persist in obtaining light-colored lignin with preserved structural integrity. In this study, an innovative one-step pretreatment strategy integrating deep eutectic solvents (DESs) with H 2 O 2 was developed to extract light-colored lignin directly from tea stem waste. The DES-H 2 O 2 system enabled the selective dissociation of lignin–carbohydrate complexes while preserving the fundamental aromatic structure of lignin. By varying the H 2 O 2 dosage, significant improvements in lignin decolorization were achieved, as evidenced by a marked reduction in the color difference relative to milled wood lignin (MWL). Comprehensive characterization using FTIR, GPC, Zeta potential, 31 P NMR, 2D-HSQC NMR, and XPS revealed that H 2 O 2 -induced oxidation not only facilitated the conversion of non-conjugated carbonyls into conjugated structures but also induced molecular depolymerization, reduced particle size and hydrogen-bond, and enhanced surface electronegativity. These modifications contributed to decreased chromophore efficiency and suppressed aggregation, ultimately yielding lignin with improved optical properties. Furthermore, incorporation of the light-colored lignin into a commercially available base cream demonstrated its potential as a sustainable UV-shielding agent, achieving a sun protection factor (SPF) exceeding 50 at optimal lignin concentrations. This work provides a promising green pathway for the high-value utilization of agricultural waste and lays the groundwork for the development of environmentally friendly, high-performance natural UV-protection products.
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危险品化学品经营许可证（带存储）