COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Yujie Liao,XianQing Zeng,ShuaiPeng Wang,Lei Tang,Changyu Tang,Yongsheng Li,Donglin Han
Conventional hydrated salt phase change material (PCM) suffer from large supercooling, severe phase separation, easy leakage, and poor mechanical properties, which limit their performance in energy storage applications. In this study, a flexible composite PCM was successfully prepared using the UV fast-curing method, which significantly improves the production efficiency of flexible materials and offers substantial time advantages. During the preparation process, a dual-network hydrogel structure was constructed through the covalent cross-linking of sodium polyacrylate (PAAS) with N, N′-methylenebisacrylamide (MBA) and the hydrogen bonding provided by starch (ST). Sodium sulfate decahydrate (SSD) was encapsulated within this structure, and 3 % Borax was added as a nucleating agent. Subsequently, stretchable and flexible composites with varying hydrogel contents were prepared. The experimental results show that the three-dimensional network structure formed by the PAAS/ST hydrogel provides an effective domain-limited space for SSD. This not only successfully prevents phase separation and leakage but also significantly enhances the flexibility and shape stability of the composites. Additionally, the introduction of the PAAS/ST hydrogel endows the composite material with a certain degree of electrical conductivity while having a relatively minor impact on its thermal conductivity. After 100 heating-cooling cycles, the composites maintained stable phase transition temperatures and enthalpies, as demonstrated by DSC tests, thus showing good cycling performance. This study provides an efficient and feasible solution for the thermal management of flexible electronic devices, with significant scientific significance and broad application prospects.
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2025
·
IF 8.9
Jingjing Yang,Yifang Hua,Jingyu Zhang,Jun Sun,Hongfei Li,Xiaoyu Gu,Sheng Zhang
Epoxy-based composites (EP composites) have long been essential in a range of thermoset applications. However, the increasing demands of emerging technologies call for multifunctional EP composites with enhanced properties. In this study, we prepared a highly effective microporous compound, BPT, containing nitrogen and boron to endow EP composites with multifunctionalities. The incorporation of 8 wt% BPT into EP composite increases the limiting oxygen index to 28.8 % and upgrades the UL-94 rating to V-0, due to the formation of a protective char layer that inhibits heat and oxygen transfer. Cone calorimeter tests demonstrate a remarkable reduction in peak heat release rate and total heat release by 55 % and 33 %, respectively. Moreover, the EP/BPT composite exhibits a 38 % reduction in total smoke production, a 45 % decrease in smoke production rate compared to the control EP. Mechanical properties are also significantly improved, with impact strength increasing from 9 kJ/m 2 to 12.4 kJ/m 2 . Additionally, the EP/BPT composite maintains high transparency, effective UV shielding, and reduced dielectric constant and loss. This multifunctional additive, synthesized through an efficient and practical method, offers a promising solution to fabricate advanced multifunctional EP composites.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2017
·
IF 6.065
Yannan Chen,Gangqiang Zhu,Mirabbos Hojamberdiev,Jianzhi Gao,Runliang Zhu,Chenghui Wang,Xiumei Wei,Peng Liu
Ag 2 O nanoparticles-loaded Bi 5 O 7 I microspheres forming a three dimensional Ag 2 O/Bi 5 O 7 I p – n heterojunction photocatalyst with wide-spectrum response were synthesized in this study. The results of transmission electron microscopy observations revealed that the Ag 2 O nanoparticles with the diameter of ca. 10–20 nm were distributed on the surfaces of Bi 5 O 7 I nanosheets. The as-synthesized Ag 2 O/Bi 5 O 7 I exhibited an excellent wide-spectrum response to wavelengths ranging from ultraviolet (UV) to near-infrared (NIR), indicating its potential for effective utilization of solar energy. Compared with pure Bi 5 O 7 I, the Ag 2 O/Bi 5 O 7 I composite also demonstrated excellent photocatalytic activity for the degradation of Bisphenol A and phenol in aqueous solution under visible LED light irradiation. Among samples, the 20% Ag 2 O/Bi 5 O 7 I composite photocatalyst showed the highest photocatalytic activity for the degradation of Bisphenol A and phenol in aqueous solution. In addition, the 20% Ag 2 O/Bi 5 O 7 I composite also exhibited a photocatalytic activity for the degradation of Bisphenol A under NIR light irradiation. The improved photocatalytic activity is attributed to the formation of a p - n heterojunction between Ag 2 O and Bi 5 O 7 I, allowing the efficient utilization of solar energy (from UV to NIR) and high separation efficiency of photogenerated electron-hole pairs. The present work is desirable to explore a possible avenue for the full utilization of solar energy.
✓ 已验证
DOI
PubMed
高影响因子
Micromachines
·
2022
·Vol. 13
·期 4
·543
·
IF 3.523
Aodong Zhang,Jian Xu,Yucen Li,Ming Hu,Zijie Lin,Yunpeng Song,Jia Qi,Wei Chen,Zhaoxiang Liu,Ya Cheng
We demonstrate a hybrid laser microfabrication approach, which combines the technical merits of ultrafast laser-assisted chemical etching and carbon dioxide laser-induced in situ melting for centimeter-scale and bonding-free fabrication of 3D complex hollow microstructures in fused silica glass. With the developed approach, large-scale fused silica microfluidic chips with integrated 3D cascaded micromixing units can be reliably manufactured. High-performance on-chip mixing and continuous-flow photochemical synthesis under UV irradiation at ~280 nm were demonstrated using the manufactured chip, indicating a powerful capability for versatile fabrication of highly transparent all-glass microfluidic reactors for on-chip photochemical synthesis.Keywords:ultrafast laser direct writing;chemical etching;carbon dioxide laser processing;3D glass microfluidics;fused silica;continuous-flow photochemical synthesis
✓ 已验证
DOI
PubMed
高影响因子
MOLECULES
·
2022
·Vol. 27
·期 18
·6084
·
IF 4.927
Tingting Zhou,Ziwen Deng,Qing Wang,Hui Li,Shun Li,Xuanming Xu,Yusun Zhou,Shukai Sun,Chao Xuan,Qingwu Tian,Limin Lun
In this work, novel selective recognition materials, namely magnetic molecularly imprinted polymers (MMIPs), were prepared. The recognition materials were used as pretreatment materials for magnetic molecularly imprinted solid-phase extraction (MSPE) to achieve the efficient adsorption, selective recognition, and rapid magnetic separation of methotrexate (MTX) in the patients’ plasma. This method was combined with high-performance liquid chromatography–ultraviolet detection (HPLC–UV) to achieve accurate and rapid detection of the plasma MTX concentration, providing a new method for the clinical detection and monitoring of the MTX concentration. The MMIPs for the selective adsorption of MTX were prepared by the sol–gel method. The materials were characterized by transmission electron microscopy, Fourier transform-infrared spectrometry, X-ray diffractometry, and X-ray photoelectron spectrometry. The MTX adsorption properties of the MMIPs were evaluated using static, dynamic, and selective adsorption experiments. On this basis, the extraction conditions were optimized systematically. The adsorption capacity of MMIPs for MTX was 39.56 mgg−1, the imprinting factor was 9.40, and the adsorption equilibrium time was 60 min. The optimal extraction conditions were as follows: the amount of MMIP was 100 mg, the loading time was 120 min, the leachate was 8:2 (v/v) water–methanol, the eluent was 4:1 (v/v) methanol–acetic acid, and the elution time was 60 min. MTX was linear in the range of 0.00005–0.25 mg mL−1, and the detection limit was 12.51 ng mL−1. The accuracy of the MSPE–HPLC–UV method for MTX detection was excellent, and the result was consistent with that of a drug concentration analyzer.Keywords:methotrexate;magnetic molecularly imprinted polymers;magnetic molecularly imprinted solid-phase extraction;high-performance liquid chromatography–ultraviolet detection
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2019
·Vol. 35
·期 2
·200-208
·
IF 1.071
Shi Yanpeng,Chen Xiaodong,Mi Zhiming,Zheng Ran,Fan Jie,Gu Qiang,Zhang Yumin
Two new compounds, 4-(2-bromophenyl-4,5-diphenyl-imidazol-1-yl)aniline(probe 1 ) and 4-[2,4,5-tris(4-bromophenyl)-1 H -imidazol-1-yl]aniline(probe 2 ), were synthesized via a soft and high-efficiency one-pot microwave- assisted method under solvent-free conditions. Their sensing to different metal ions was detected by UV spectrophotometry and fluorescence spectrometry. Probe 2 revealed highly selective and sensitive UV and fluorescence response to Fe 3+ ion. Upon the addition of Fe 3+ ion, probe 2 showed obvious color change of the solution, conspicuous absorbance enhancement and relatively quick fluorescence quenching. The detection limit for Fe 3+ ion was respectively calculated to be 0.72 μmol/L(fluorescent detection) and 0.48 μmol/L(UV-spectrum detection). Also, probe 2 was bound by Fe 3+ ion to form a 1:1 complex. Moreover, preliminary application of probe 2 for detecting Fe 3+ ion in aqueous solution was attempted, and satisfying results were obtained.
✓ 已验证
DOI
高影响因子
Water
·
2021
·Vol. 13
·期 21
·3035
·
IF 3.103
Xinlu Qu,Haowei Wu,Tianyang Zhang,Qianhong Liu,Mu Wang,Mohamed Yateh,Yulin Tang
As an emerging light source, ultraviolet light emitting diodes (UV-LEDs) are adopted to overcome the shortcomings of the conventional mercury lamp, such as mercury pollution. The degradation of chloramphenicol (CAP) using three UV-LED-based advanced oxidation processes (AOPs)—UV-LED/persulfate (UV-LED/PS), UV-LED/peroxymonosulfate (UV-LED/PMS) and UV-LED/chlorine—was investigated. Results indicate that CAP can be more effectively degraded by the hybrid processes when compared to UV irradiation and oxidants alone. Degradation of CAP using the three UV-LED-based AOPs followed pseudo-first-order kinetics. The degradation rate constants (kobs) for UV-LED/PS, UV-LED/PMS, and UV-LED/chlorine were 0.0522, 0.0437 and 0.0523 min−1, and the CAP removal rates 99%, 98.1% and 96.3%, respectively. The degradation rate constant (kobs) increased with increasing oxidant dosage for UV-LED/chlorine, whereas overdosing reduced CAP degradation using UV-LED/PS and UV-LED/PMS. Ultraviolet wavelength influenced degradation efficiency of the UV-LED based AOPs with maximum CAP degradation observed at a wavelength of 280 nm. The application of UV-LED enhanced the formation DBPs during subsequent chlorination. uUV-LED/PMS produced more disinfection by-products than UV-LED/PS. Compared to UV-LED, UV-LED/PS reduced the formation of dichloroacetonitrile and trichloronitromethane during chlorination owing to its capacity to degrade the nitro group in CAP. The intermediates dichloroacetamide, 4-nitrobenzoic acid, 4-nitrophenol were produced during the degradation of CAP using each of UV-LED, UV-LED/PS and UV-LED/chlorine. The present study provides further evidence supporting the application of UV-LED in AOPs.Keywords:chloramphenicol;advanced oxidation processes;UV-LED
✓ 已验证
DOI
高影响因子
Food Analytical Methods
·
2022
·Vol. 15
·期 9
·2479-2486
·
IF 3.498
Zhang Shengnan,Li Zhibo,Qi Yanxia,Yu Pei,Zhao Qiancheng
The determination of 2-acetyl-1-pyrroline (2-AP), which is an important flavour compound of crustaceans and has a low odour threshold of 0.05 μg/L in water, is still a challenge due to the instability and trace levels of 2-AP in food samples. In this study, 2-AP was trapped by o-phenylenediamine and subsequently purified by the dispersive solid-phase extraction and dispersive liquid–liquid microextraction (DSPE-DLLME) methods for HPLC–UV analysis. The developed method was simple, fast and sensitive for the determination of 2-AP in shrimp. Under the optimized DSPE-DLLME conditions, the developed method exhibited excellent linearity ( R 2 = 0.996) and a low limit of detection (LOD, 1.77 μg/kg) and limit of quantitation (LOQ, 5.33 μg/kg). The recoveries of 2-AP in shrimp ranged from 86.3 to 101.6%. In addition, the developed method was applied to detect 2-AP levels in baked shrimp (ranging from 5.6 to 12.6 μg/kg), indicating that the formation of 2-AP could be observed in thermally treated shrimp depending on heating temperature and time. In summary, the developed method has potential application for the trace determination of 2-AP in shrimp due to its convenience and high sensitivity.
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Shunlong Pan,Xinrui Guo,Rong Li,Hao Hu,Jingwei Yuan,Biming Liu,Shengqiang Hei,Yongjun Zhang
Advanced oxidation processes (AOPs) have been successfully applied for the degradation of fluoroquinolones, but most studies ignored the removal of fluorine ions (F − ) generated after the degradation, and the remaining F − would cause secondary pollution to the water body. In this study, a novel UV radiation/hydrated Fe(III) oxide (HFO) coupling strategy was utilized to activate peroxymonosulfate (PMS) for the comprehensive enhanced removal of norfloxacin (NX) and the generated F − . Results showed that UV/HFO/PMS process significantly improved NX degradation efficiency compared with individual system, and NX degradation efficiency of 97.3% could be achieved by reactive oxygen species (ROS) generated in the process, in which singlet oxygen ( 1 O 2 ) was the main ROS. Moreover, the remaining concentration of F − was generally below 0.35 mg/L within a wide pH range (4–10). And the simultaneous adsorption of HFO for F − is mainly related to coordination and electrostatic interaction . After five cycles, the catalytic efficiency of HFO for NX removal only dropped by 4.4%. Besides, UV/HFO/PMS system had great anti-interference ability on coexisting anions. UV/vis two-dimensional correlation spectroscopy (2DCOS) analysis revealed that ROS would preferentially degrade the piperazine ring, and the quinolone group would be destroyed before the heteroatom during the degradation of NX. This work provides new insights for the treatment of antibiotic pollution.
✓ 已验证
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2025
·
IF 3.6
Taifang Zhang,Dan Zhang,Peng Wang,Lingxuan Zhou,Mikhail G. Brik,Chonggeng Ma
Inorganic phosphors with tunable broadband emission hold significant applications in solid-state lighting. Herein, a series of novel Sr 3 YGa 2 O 7.5 : Bi 3+ , Eu 3+ (abbreviated as SYGO: Bi 3+ , Eu 3+ ) phosphors with tunable optical properties were synthesized by high-temperature solid-state reaction process. The photoluminescence excitation (PLE) spectrum of Sr 3 YGa 2 O 7.5 : Bi 3+ ranges from 200 to 400 nm with two peaks at 280 and 331 nm, matching well with the n-UV chip based white light-emitting diodes (WLED). Under ultraviolet light excitation, a single Bi 3+ -doped Sr 3 YGa 2 O 7.5 phosphor exhibited five distinct luminescence peaks at 410, 510, 560, 605, and 700 nm at 10 K, which are attributed to the 3 P 1 → 1 S 0 transition emissions of Bi 3+ ions occupying the four Sr sites and one Y site within the Sr 3 YGa 2 O 7.5 host lattice . The optical tuning of the Sr 3 YGa 2 O 7.5 : Bi 3+ phosphor is achieved by designing the Bi 3+ →Eu 3+ energy transfer and changing the excitation wavelength based on the selected site occupation. The Commission Internationale de l'Eclairage (CIE) coordinates and emission color of the Sr 3 YGa 2 O 7.5 : Bi 3+ , Eu 3+ phosphors were successfully tuned from blue via white to red. The energy transfer efficiency from Bi 3+ to Eu 3+ can reach as high as 89.54 %, and this energy transfer process is predominantly governed by the dipole-quadrupole interaction. In addition, the white LED device prepared by combination of SYGO: 0.02Bi 3+ , 0.03Eu 3+ phosphors with 365 nm chip has high color rendering index (CRI) of 85.5 and low correlated color temperature of 3537 K. As the driving current increases, the white light emitting diodes (WLED) device demonstrates good color stability. Based on these findings, the synthesized SYGO: Bi 3+ , Eu 3+ phosphors can serve as color-tunable and single-phase white phosphors with potential applications in UV-excited white LEDs.
✓ 已验证
产品关联
DOI
高影响因子
Sustainable Chemistry and Pharmacy
·
2025
·
IF 5.8
Xue Zhang,Miaoyan Li,Xin Zhang,Xueni Hou,Xiangrong Wang
Natural extracts, characterized by their superior biocompatibility and multifunctionality, have demonstrated remarkable potential in fields such as antibacterial, antioxidant and ultraviolet (UV) protection. However, at present, natural extracts are facing a key bottleneck in functional finishing—poor washing durability. In this study, luteolin, a natural extract, was chosen to treat bio-based Polyamide 56 (PA56) fabrics. The findings indicated that the fabric dyed with luteolin not only achieved good coloration but also exhibited outstanding multi-functional properties: the ultraviolet protection factor (UPF) value reached 205, the ABTS radical cation (ABTS •+ ) scavenging rate was 99 %, and the antibacterial rates against Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ) were 70 % and 95 %, respectively. To further enhance the color fastness and functional durability, this study introduced metal ions. Through the coordination reaction between luteolin, metal ions and PA56, the color fastness was successfully raised to level 4 or above, and the durability of functionalities was significantly improved. After 10 washing cycles, the UPF value of the fabric remained at 155, the ABTS •+ scavenging rate exceeded 60 %, and the antibacterial rate against S. aureus remained at 75 %. This study proposed and verified a sustainable and coordinated strategy based on coordination chemistry, systematically addressing the durability issue of natural functional finishing agents.
✓ 已验证
DOI
高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Jingyuan Zhang,Qiang Wang,Weimin Guo,Ying Qin,Changfang Hu,Kuo Zhang,Jiang Chang,Xiaoyan Yu,Lijian Sun,Qiu Fu,Gaofeng Pan
While there has been an ongoing effort to develop environmentally friendly multifunctional films made from natural polymers and renewable resources, there are still challenges in realizing versatility through a simple and green process. Here, we use aqueous alkali to rapidly dissolve modified cellulose fibers above 0 °C within minutes to prepare cellulose hydrogel substrate. The modified cellulose can be commercially obtained from carboxymethyl cellulose manufacturing with low cost. Subsequently, a biodegradable multifunctional all-biomass composite film is obtained by wrapping sodium lignosulfonate (LSS) and phosphorylated sodium alginate (PSA) molecules in cellulose hydrogel. The films exhibited excellent UV protection, blocking 86–99.3% of UV-A and 99.6–100% of UV–B radiation. Meanwhile, the films blocked 57.4–90.7% of high-energy blue light (HEBL, 400–450 nm) and maintained 66.2–80% transparency at 600 nm. The films effectively block blue light from sources such as computer screens, mobile phones, and lighting systems by means of light absorption. The films outperformed commercial shielding films in UV and HEBL blocking. Notably, the films acquired excellent flame-retardant performance with the addition of PSA, achieving a high limiting oxygen index (LOI) of 33.3%. In comparison with the original one, the composite film exhibited a 75.6% reduction in peak heat release rate and an 84.6% decrease in total heat release. Moreover, the films have ideal biodegradability and mechanical strength, with a tensile strength exceeding 98 MPa. This sustainable and clean strategy would direct all-biomass films toward diversified applications.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）