TALANTA
·
2014
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IF 3.511
Wei Rao,Rong Cai,Yuli Yin,Fang Long,Zhaohui Zhang
In this paper, a highly selective sample clean-up procedure combining magnetic dummy molecular imprinting with solid-phase extraction was developed for rapid separation and determination of 4-nonylphenol (NP) in the environmental water samples. The magnetic dummy molecularly imprinted polymers (mag-DMIPs) based on multi-walled carbon nanotubes were successfully synthesized with a surface molecular imprinting technique using 4-tert-octylphenol as the dummy template and tetraethylorthosilicate as the cross-linker. The maximum adsorption capacity of the mag-DMIPs for NP was 52.4 mg g −1 and it took about 20 min to achieve the adsorption equilibrium. The mag-DMIPs exhibited the specific selective adsorption toward NP. Coupled with high performance liquid chromatography analysis, the mag-DMIPs were used to extract solid-phase and detect NP in real water samples successfully with the recoveries of 88.6–98.1%.
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SOLAR ENERGY
·
2021
·
IF 5.742
Ting Wang,Jiayong Zhang,Bin Yao,Yongfeng Li,Zhanhui Ding,Chunkai Wang,Jia Liu
Five types of Cu 2 ZnSn(S,Se) 4 (CZTSSe) films were fabricated by selenization of Cu 2 ZnSnS 4 (CZTS) precursor films preparing through Cu-Zn-Sn-S precursor solutions with nominal Cu + /(Cu + +Cu 2+ ) ratio of 0, 0.2, 0.4, 0.8 and 1. Five types of CZTSSe solar cells were prepared by using the five types of CZTSSe films as absorbers, respectively. The crystal quality and phase composition of the CZTS and CZTSSe films were characterized by XRD, Raman and SEM, and the photovoltaic performance for the CZTSSe solar cells were measured by J-V and EQE. It is found that the CZTS film consists of kesterite CZTS when the ratio is 0 and of kesterite CZTS together with a small amount of SnS when the ratio is 0.2 to 1. All of the CZTSSe films are comprised of kesterite CZTSSe and a small amount of Zn(S,Se). The crystal quality and lattice constants of the kesterite CZTSSe increase with increasing the ratio, while the amount of Zn(S,Se) decreases with increasing the ratio and almost to zero as the ratio is 1. The power conversion efficiency ( PCE ) of the CZTSSe solar cells increases from 5.47% to 8.43% as the ratio increases from 0 to 1, which is due to improvement in short-circuit current density ( J sc ) and filling factor ( FF ) and decrease in open circuit voltage deficit ( V oc , def ). The influence mechanism of the ratio on the PCE is suggested by analyzing effect of the ratio on electrical parameters of the CZTSSe solar cells.
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OPTICAL MATERIALS
·
2023
·
IF 3.9
Jun Sun,Wei Zhu,Bei Zhang,Feifei Huang,Limin Hu,Hongping Ma,Renguang Ye,Youjie Hua,Shiqing Xu
Full-spectrum white LED (w-LED) lighting is primarily achieved through the combination of multiple-color phosphors excited by the chip, and making the development of efficient multi-color phosphors based on single matrix is an excellent choice for full-spectrum w-LED. In this paper, a series of Rb 2 KNa(Li 3 SiO 4 ) 4 : xEu 2+ (0.1 % ≤ x ≤ 15 %) phosphors were successfully synthesized via high-temperature solid-state reaction with varied Eu 2+ concentration. At low doping concentration, the Eu 2+ ions exhibit primarily green emission at 530 nm in the phosphor. However, as the doping concentration of Eu 2+ ions increase, the emission spectrum undergoes a significant transformation. A cyan emission occurs at 478 nm, resulting in the spectral conversion from a green single-peak emission to a dual-peak emission of cyan and green. The spectral conversion is attributed to the changes in the positioning of Eu 2+ ions within the crystal lattice . The obtained phosphors demonstrate excellent thermal stability and can be utilized in w-LED devices. After encapsulation with a blue LED chip, it achieves a color rendering index of 91.8 and a correlated color temperature of 4085 K, showcasing its significant application value in the field of full-spectrum w-LED.
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Laser & Photonics Reviews
·
2026
·
IF 9.7
Dawei Wen,Haoyuan Weng,Bin Xiao,Pan Wang,Ruijing Fu,Zhiwei Ma,Qingguang Zeng,Guanjun Xiao
Luminescence pressure sensors, valued for their remote sensing capability and high resolution, have been developed recently. However, most current sensors rely on a linear relationship between an optical property and pressure. We propose a nonlinear machine learning (ML) method to model the luminescence intensity ratio (LIR) as a function of pressure. The versatility and performance of this method are demonstrated using (Y,Gd)(Al,Ga) 3 (BO 3 ) 4 :Cr 3+ phosphors as luminescent pressure sensors. The relative sensitivities of the 2 E → 4 A 2 / 4 T 2 → 4 A 2 LIRs in (Y,Gd)(Al,Ga) 3 (BO 3 ) 4 :Cr 3+ range from 1.58%/GPa to 25.27%/GPa. The ML fitting demonstrates a superior performance compared to linear fitting, with lower mean absolute errors (0.0355–0.1499 GPa vs. 0.1209–0.6955 GPa) and higher R 2 values (99.70–99.98% vs. 93.69–99.79%). The ML fitting method is more suitable for modeling the nonlinear relationships between LIR and pressure than traditional linear fitting. The nonlinear ML fitting approach offers a powerful new way to model the relationships between luminescence features and various physical parameters.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9
Jiali Chen,Lijuan Chen,Yuanzhao Huang,Jin Su,Fan Chen,Wei Wang
The excessive reliance on traditional fossil fuels has not only triggered an energy shortage crisis but also caused severe environmental pollution. These pollutants can significant accumulate via the process of bioaccumulation within the food chain, ultimately posing a serious threat to human health. Therefore, the development of efficient and precise water quality monitoring technologies is crucial for the prevention and control of environmental pollution. In this study, a g-C 3 N 4 -FeCoNi layered double hydroxide (LDH) heterostructure material (g-C 3 N 4 -LDH) was successfully synthesized using a one-step hydrothermal method. The formation of an n–n heterojunction between g-C 3 N 4 and LDH facilitates efficient interfacial charge transfer and structural stabilization, which is critical for bifunctional applications. Consequently, the constructed g-C 3 N 4 -LDH sensing platform exhibits good performance in 4-NP detection, with a sensitivity of 0.664 μA·μM −1 ·cm −2 , a linear response range of 5–800 μM, and a low detection limit of 0.67 μM (S/N = 3). Moreover, the platform demonstrates strong resistance to interference and excellent stability. Additionally, g-C 3 N 4 -LDH can completely degrade 4-NP within 10 min, effectively detoxifying the pollutants. This study offers new insights and a solid foundation for the rapid and accurate detection and treatment of water pollutants.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2017
·
IF 3.133
Lei Meng,Bin Yao,Yongfeng Li,Zhanhui Ding,Zhenyu Xiao,Kaisi Liu,Gang Wang
The back contact adhesion is the important factor of the microstructural performance which can determine the optoelectronic properties of the kesterite-based solar cells. Here, we present a rational and effective strategy to significantly enhance the back contact adhesion of Cu 2 (Zn,Cd)Sn(S,Se) 4 (CZCTSSe) absorber layers by insetting the appropriate thickness carbon-doping CZCTS thin films . We chose the oleylamine as the carbon-doping reagent which can generate a small amount of carbon in the annealing process . The suitable thickness carbon-doping CZCTS films can significantly change the crystal growth mechanism of CZCTSSe absorber layers, and eliminate the holes in the back contact. The efficiency of CZCTSSe solar cells fabricated by insetting the appropriate thickness carbon-doping CZCTS films is above 7%, and shows the excellent repeatability and long-term air stability compared with the control devices.
研究领域:
材料科学
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光伏技术
·
半导体物理
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表面与界面工程
·
无机功能材料
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FOOD CHEMISTRY
·
2026
·
IF 10.4
Donghang Yin,Jing Quan,Mengyuan Tan,Hui Yuan,Tianyi Chen,Lei Liu,Siyuan Chang,Tao Zhang,Rong Feng,Genxi Zhang,Xuechao Xu
Herein, a bacteriophage-modified nanozyme sensing platform was developed for dual-mode detection of Staphylococcus aureus in food samples. A peroxidase-like Fe/Ce metal-organic framework nanozyme was functionalized with bacteriophage SAYZU01 to obtain SAYZU01@Fe/Ce MOF, enabling specific recognition and capture of S. aureus . Tetra-(4-aminophenyl) ethylene (TPE-4A), an aggregation-induced emission-active molecule, was introduced as a dual-functional substrate to generate both colorimetric and fluorescent signals after catalytic oxidation. Compared with conventional TMB, TPE-4A provides complementary colorimetric and fluorescent readouts, allowing cross-checking of the sensing response. The captured bacteria inhibited the catalytic activity of SAYZU01@Fe/Ce MOF, resulting in concentration-dependent signal changes. Under optimized conditions, the platform achieved low detection limits of 1.48 × 10 1 CFU mL −1 for colorimetry and 1.27 × 10 1 CFU mL −1 for fluorometry, with a linear range of 2.43 × 10 1 –2.43 × 10 7 CFU mL −1 . This strategy provides a dual-mode approach for rapid pathogen detection in food safety monitoring. Download: Download high-res image (342KB) Download: Download full-size image
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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2026
·
IF 6.7
Bo Luo,Yanbing Wu,Xiaoyang Zhao,Huanxi Cui,Wenjing Niu,Zhanghan Gao,Xiaoyu Feng,Dan Li,Yi Zhao,Yuchen Tao,Xinyue Hu,Yinge Wang,Yihan Hu,Jianqi Chai
A series of novel N-(pyrazol-4-yl)benzamide derivatives featuring diphenylamine or diphenyl ether scaffolds was synthesized and evaluated for antifungal activities. Remarkably, compound 6i demonstrated potent broad-spectrum efficacy against five fungal species, particularly Sclerotinia sclerotiorum, with a half maximal effective concentration (EC50) value of 0.44 μg/mL, outperforming Boscalid (EC50 = 0.71 μg/mL) and nearing Fluxapyroxad (EC50 = 0.26 μg/mL). Additionally, compound 6i exhibited substantial protective effects against S. sclerotiorum on oilseed rape leaves, Rhizoctonia solani on rice leaves, and Valsa mali on apple fruits at 100 μg/mL. Scanning electron microscopy (SEM) analysis further confirmed that 6i could inflict significant damage to S. sclerotiorum hyphae. Further succinate dehydrogenase (SDH) enzymatic inhibition assays, molecular docking, and molecular dynamics (MD) simulations indicated that compound 6i could potentially act as a succinate dehydrogenase inhibitor (SDHI). These findings suggested that 6i held significant promise as an innovative broad-spectrum SDHI for crop protection, warranting further investigation.
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PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2026
·
IF 2.6
Yiting Geng,Yiwei Wang,Qingyu Meng,Ningbo Huang,Shan Huang,Xiaojun Chen
Conventional antimicrobial strategies relying on multiple antibiotics are becoming increasingly ineffective against drug-resistant strains, highlighting the urgent need for non-antibiotic-dependent therapeutic approaches. In this context, nanotechnology-based multifunctional platforms have emerged as a promising frontier in antimicrobial research due to their resistance-free mechanisms, high controllability, and precise targeting capability. This study presents a multifunctional nanoscale system, Fe₃O₄@polydopamine -Vancomycin @DC 2.4 cell membrane (FPVM), designed for the enrichment, recognition, and synergistic eradication of S. aureus. The system features an Fe 3 O 4 core coated with polydopamine, which enhances both photothermal performance and biocompatibility. Vancomycin is subsequently conjugated to the surface to enable specific recognition and bactericidal activity. Finally, the nanoparticles are encapsulated with stimulated dendritic cell (DC) membranes, further reinforcing the targeting ability toward S. aureus. Under 808 nm near-infrared irradiation (1.2 W cm -2 ), the FPVM platform (400 µg mL -1 ) reduced the survival rate of S. aureus to below 5% within 9 h and disrupted over 90% of pre-formed biofilms, demonstrating high photothermal conversion efficiency. In summary, the FPVM system integrates enhanced targeting and antibacterial functions, offering a versatile blueprint for constructing next-generation antimicrobial platforms.
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RESEARCH ON CHEMICAL INTERMEDIATES
·
2026
·
IF 3.3
Liu Yuqi,Ren Qiuxuan,Xu Jiaojiao,Liu Zhenguo,Liu Zhijun,Yan Haiyan,Zhang Gai
Enhanced photocatalytic degradation of dyes in wastewater remains a major focus in environmental research. Herein, a novel spherical binuclear metallophthalocyanine (Zn 2 Pc 2 (EP) 4 ) featuring a planar conjugated structure was self-assembled onto g-C 3 N 4 via π-π stacking interactions. This self-assembly, achieved through a facile “in situ” hydrothermal method, resulted in the construction of a g-C 3 N 4 /Zn 2 Pc 2 (EP) 4 biomimetic photocatalyst. A strong π-π stacking interaction between Zn 2 Pc 2 (EP) 4 and g-C 3 N 4 is evidenced by the red shift of the Q-band absorption peak and the elevated Zn 2p 3/2 binding energy. Furthermore, the luminescence intensity of g-C 3 N 4 /Zn 2 Pc 2 (EP) 4 decreases to 53% of that of pure g-C 3 N 4 , indicating that the π-π stacking interaction promotes the separation of photogenerated electron–hole pairs. The g-C 3 N 4 /Zn 2 Pc 2 (EP) 4 photocatalysts showed good photocatalytic oxidation activity toward methylene blue. The catalytic efficiency of g-C 3 N 4 /Zn 2 Pc 2 (EP) 4 for methylene blue reaches 85.1% after 3h of treatment at room temperature, which is 1.94 times higher than that of pure g-C 3 N 4 . The measured first-order kinetic rate constant is 0.0086 min −1 , exhibiting a 3.44-fold enhancement relative to that of pure g-C 3 N 4 . Mechanistic investigations indicated that the highly reactive intermediate g-C 3 N 4 (e − )/[Zn 2 Pc 2 (EP) 4 ]⁺– * O 2 significantly promoted the photocatalytic oxidative degradation of methylene blue in wastewater. The self-assembled supramolecular g-C 3 N 4 /Zn 2 Pc 2 (EP) 4 offers great potential for developing high-efficiency and environmentally friendly photocatalysts for dye-containing wastewater.
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ORGANIC PROCESS RESEARCH & DEVELOPMENT
·
2026
·
IF 3.5
Shichun Weng,Jinyao Hu,Wei Feng,Xiaoqiao Zhao,Zichao Guo,Liping Chen,Wanghua Chen,Xuedong Gong
3,4-Bis(4-nitrofurazan-3-yl)furoxan (DNTF) is a high-performance hydrogen-free explosive, its conventional route exhibits that the reaction mechanisms remain ambiguous, high thermal risk and the yield is relatively low. This work clarifies the oxidation/sulfonation mechanism, identifies the cause of oxidant loss, and develops an efficient and safe synthesis. First, the key intermediate 3-(4-aminofurazan-3-yl)-4-(nitrofurazan-3-yl)furoxan (ANTF) and the by-product 3-(4-aminofurazan-3-yl)-4-(amino sulfonic acid furazan-3-yl)furoxan (SNFF) were detected by HPLC-MS technique, it was also discovered and verified that SNFF can catalyze the decomposition of Caro’s acid, causing oxidant collapse by catalytically cleaving the O–O bond of peroxymonosulfuric acid, releasing O2. Besides, density functional theory (DFT) calculation results show that oxidation reaction initiates at the amino group distal to the furoxan oxygen, with the second nitro conversion as the highest-energy step. Furthermore, it is proposed that a sulfonation reaction occurs between 3,4-bis(4-aminofurazan-3-yl)furoxan (DATF) and sulfur trioxide, followed by oxidation to generate SNFF. Notably, reaction calorimetry results showed that the oxidation process still carries a significant risk of a thermal runaway, where both excessively quick and slow feeding rates influence the yield of the oxidation process and enhanced reaction temperature and concentration of Caro’s acid indeed increase the oxidation capacity while suppressing sulfonation side reaction. By considering the balance of thermal risk and optimal process parameters, the DNTF yield could reach 75% with >99% purity.
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Nanomaterials
·
2022
·Vol. 12
·期 22
·3994
·
IF 5.719
Zhanwu Wang,Yingrui Sui,Meiling Ma,Tianyue Wang
Cu2ZnSn(S,Se)4(CZTSSe) films are considered to be promising materials in the advancement of thin-film solar cells. In such films, the amounts of S and Se control the bandgap. Therefore, it is crucial to control the concentration of S/Se to improve efficiency. In this study, Cu2MnxZn1−xSnS4(CMZTS) films were fabricated using the sol-gel method and treated in a Se environment. The films were post-annealed in a Se atmosphere at various temperature ranges from 300 °C to 550 °C at intervals of 200 °C for 15 min to obtain Cu2MnxZn1−xSn(S,Se)4(CMZTSSe). The elemental properties, surface morphology, and electro-optical properties of the CMZTSSe films were investigated in detail. The bandgap of the CMZTSSe films was adjustable in the scope of 1.11–1.22 eV. The structural propeties and phase purity of the CMZTSSe films were analyzed by X-ray diffraction and Raman analysis. High-quality CMZTSSe films with large grains could be acquired by suitably changing the selenization temperature. Under the optimized selenization conditions, the efficiency of the fabricated CMZTSSe device reached 3.08%.Keywords:Cu2ZnSn(S,Se)4film;Mn-doping;solar cells;properties;selenization temperature
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