Journal of Materials Chemistry C
·
2024
·
IF 5.7
Jinwen Tan,Han Luo,Shiyi Wang,Ling Huang,Liling Cao,Xuehua Dong,Guohong Zou
A short-wave UV antimony(III) oxysalt, RbSb(SO4)(H2PO2)F, by incorporating three different anions (SO42-, H2PO2-, F-) with trivalent antimony cations that possess stereochemically active lone-pair electrons (SCALP), has been successfully synthesized. Significantly, the mixed anions and Sb3+ cations combine to form a low-dimensional 1D infinite anionic chain, denoted as [Sb(SO4)(H2PO2)F]∞-, where synergistic interactions among these units contribute to a substantial birefringence of 0.192 at 546 nm and achieve a short cutoff edge down to 276 nm. This research expands the family of UV birefringent optical materials and provides guidance for the further exploration of novel structural-functional materials.
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INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Weikang Shen,Haobo Wang,Zhouzhe Lan,Guangzhi Xu,Qinxue Ni,Qiufen Mo,Youzuo Zhang,Yan Wang
Gardenia fruit oil (GFO) is a new emerging edible woody oil with few investigations of its’ refinement process. In this study, different degumming, deacidification and bleaching technologies were introduced for realizing moderate refining of the GFO based on the preservation of bioactive micronutrients. Firstly, a simple multi-stage solid phase extraction (SPE) combined with a lab- affordable HPLC-UV instrument was developed for determinations of several vital biological constituents, such as crocetin, geniposide, polyphenols, phytosterols and squalene in the GFO. Satisfactory limit of detection (LOD), limit of quantification (LOQ), recovery, intra-day and inter-day precision were obtained. Subsequently, changes of those phytochemicals during three types of degumming, followed by three kinds of deacidification and then three ways of bleaching were investigated, offering insightful suggestions for achieving moderate refining of the GFO. Finally, the refined GFO might be suggested as a potential functional edible oil with valuable micronutrients. To our knowledge, this is the first study investigating moderate refinement techniques for GFO, as well as developing novel methods for phytonutrients analysis in the GFO.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Qian Xiao,Yuting Duan,Hongyu Dong,Shuili Yu,Xingli Ji,Guicai Liu,Rongsheng Ning,Mingce Long
Sulfite radicals-based advanced reduction processes (ARPs) have shown promise for efficiently removing chlorite, a toxic by-product of chlorine dioxide disinfection. However, the role of sulfite radicals in chlorite reduction through UV-mediated ARPs has been underestimated, as overshadowed by the superior reductive abilities of hydrated electrons. In this study, we investigated the contributions of sulfite radicals and hydrated electrons in the UV/sulfite (UV/S(IV)) system for chlorite reduction. UV/S(IV) system achieved a nearly complete reduction of 13.5 mg/L chlorite to chloride within 60 min in deionized water using 160 mg/L S(IV) and UV doses of 6.0 mW/cm 2 . The first-order rate constant for chlorite removal in this system was 0.080 ± 0.006 min −1 , up to 27 times faster than in previous systems. In addition, hydrated electrons and sulfite radicals were identified as the dominant reducing species, mainly based on the EPR spectra and results of nitrate/nitrite quenching experiments. Kinetic simulations revealed that short-lived hydrated electrons initiated efficient chlorite reduction, while stable sulfite radicals selectively decomposed chlorite into chloride in complex water matrices throughout the process. Moreover, UV/S(IV) system showed the potential for selectively reducing chlorite to chloride in real water, with > 81.0 % removal of 1.35 mg/L in 60 min. Importantly, this reduction process was hardly influenced by the presence of coexisting water constituents such as HCO 3 − , SO 4 2− , Cl − , NO 3 − , and NO 2 − . This work brightens an overlooked route to selective reduction of chlorite to chloride in UV/S(IV) system.
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MACROMOLECULAR CHEMISTRY AND PHYSICS
·
2025
·
IF 2.7
Danni Zhu,Zhe Li,Yuqing Wang,Wuxiang Chen,Nanshan Wu,Miaoming Huang,Hao Liu,Suqin He,Wanlin Xu,Wentao Liu
Polyurethane (PU) is widely used in production and daily life due to its excellent mechanical properties and strong plasticity. Long-term ultraviolet (UV) irradiation will cause PU aging and shorten its service life. However, preparing UV-resistant PU, which is colorless, transparent, and non-migratory, remains a challenge. This work introduced the reactive benzotriazole UV absorber (R455) into the PU molecular chain to prepare colorless and transparent intrinsic UV-resistant samples (PCU) by polymerization, using polycarbonate diol as soft segment, dicyclohexylmethane diisocyanate as hard segment, and 1,6-hexanediol as chain extender. The results show that the light transmittance of the UV-resistant PCU sample is about 90% in the visible light range. Moreover, the UV-resistant PCU shows excellent mechanical properties with elongation at break respectively higher than 580% and tensile strength transcending 50 MPa. After UV irradiation for 192 h, the tensile strength as well as the elongation at break of the PCU sample without R455 of the original values are respectively reduced to simply 60.8% and 62.7%. Whereas the introduction of R455 gives the PCU sample excellent UV resistance, the PCU sample with 1.5% R455 is respectively about 99.0% and 92.8%. These samples can be used in various fields with both UV resistance and optical requirements.
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MATERIALS LETTERS
·
2025
·
IF 2.7
Ze Yin,Wenxu Tang,Ke Zhao,Binghao Chen,Jinggang Yang,Lei Sun,Shan Gao,Potao Sun
Microcracks and electrical treeing within polymer insulating materials are the primary causes of insulation failure. Early detection and repair of such damages are crucial. In this study, we leveraged the aggregation-induced emission (AIE) effect and a microcapsule self-healing system to design a UV-triggered smart insulating material capable of autonomous damage repair and self-reporting. The composite material demonstrated effective healing of both mechanical damage and electrical treeing channels, achieving damage-recovery rates of 91.67 % and 93.26 % for tensile strength and electrical strength, respectively. As the released healing agent was solidified within the damage path, it triggered intense AIE fluorescence, precisely indicating the location of damage.
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JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Dan Li,Liangchen Long,Wei Xia,Weixin Zhao,Likui Feng,Xinhui Xia,Shufei He,Yu Liu,Shijie You,Liangliang Wei
Human body fluids related pollutants (BFPs) are primary precursors to disinfection by-products (DBPs) in swimming pool water (SPW). This study evaluated the degradation efficiency of ultraviolet/vacuum ultraviolet (UV/VUV) technology for the removal of three typical BFPs: urea, creatinine, and hippuric acid. The results showed that UV/VUV irradiation significantly enhanced the removal of these pollutants compared to UV alone. In addition, the observed rate constant (k obs ) of the UV/VUV system was 1.9–8.0 times higher than that of the UV/H 2 O 2 system, accompanied by a substantial 89.6 % reduction in the electrical energy per order (EEO). Urea degradation primarily involved the cleavage of C-N and C-H bonds within the urea molecule induced by VUV photolysis, whereas the degradation of creatinine and hippuric acid was mainly driven by a series of reactions (including decarboxylation, demethylation, hydroxylation, and ring opening) initiated by •OH. pH variations within the range of 6.8–8.2 exerted minimal impact on pollutant removal. However, NO 3 , humic acid, and cyanuric acid obviously inhibited the removal of BFPs. Employing UV/VUV system as a pretreatment step prior to chlorination disinfection led to a noteworthy reduction of 63.6 %-69.1 % of the adsorbable chlorine in actual SPW. Results of this study presented a green, chemical-free, and operationally simple method to mitigate DBPs formation in SPW.
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Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Zhilin Xia,Chenchen Zhu,Zhenling Shen,Mingmeng Liu,Zhaopeng Zhang,Ting Wang,Xin Yang,Xianjia Peng
Sand filtration was innovatively used to separate metal sulfide particles from acidic wastewater. CuS particles were efficiently separated by sand filtration, and the turbidity in the effluent maintained less than 1.00 NTU. However, the filter column was easily penetrated after 25 min filtration of As 2 S 3 particles. CdS particles had poor sand filtration performance and the turbidity in the effluent was higher than 121.00 NTU. UV light irradiation greatly increased the zeta potential of CdS and As 2 S 3 particles from −26.79 to −8.46 mV and −38.45 to −11.20 mV, respectively, and also improved the hydrophobicity, making the water contact angels of CdS and As 2 S 3 particles increased from 22.79° to 61.70° and 64.50° to 87.80°, respectively. After UV irradiation, the particle size distribution of CdS and As 2 S 3 particles was transferred to a range with larger particle sizes. The sand filtration performance of the UV light irradiated As 2 S 3 and CdS particles was significantly enhanced, and the turbidity in the effluent was less than 1.00 NTU under a flow rate of 6.0–12.0 m/h. The calculated XDLVO energies ( Δ E d 0 Tot ) between the UV irradiated metal sulfide particles as well as between these particles and quartz sand greatly decreased, implies the self-aggregation and attachment on the surface of quartz sands of these particles were markable enhanced, resulting the improvement of sand filtration performance of these particles. This study presents an efficient and economical method to separate metal sulfide particles produced by sulfidation precipitation from acidic wastewater.
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MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 9
·1-13
·
IF 5.3
Li Zehao,Jing Weixuan,Yang Zhenwei,Gao Weizhuo,Zhou Fan,Han Feng,Mao Qi,Zhao Libo,Yang Zhaochu,Jiang Zhuangde
A low-hysteresis coaxial pH sensor was presented for continuous soil monitoring. The electrolyte was irradiated with ultraviolet (UV) light for different durations, and then used for the electrodeposition of the IrO x film onto the front end of a stainless-steel wire, forming the working electrode. The reference membrane/AgCl/Ag paste (reference electrode) was coaxially integrated onto the insulated middle section of the working electrode, creating the pH sensor. It is found that the UV irradiation treatment generates sufficient hydroxyl radicals in the electrolyte, which increases the proportion of IrO 2 on the surface of the formed IrO x film and further enhances its reversible surface reactions with H + . The reference electrode is reliably integrated with the working electrode, which effectively miniaturizes the pH sensor for soil monitoring. With the UV irradiation duration optimized to be 2 days, the sensitivity and hysteresis voltage of the pH sensor were determined to be -74.8 mV/pH and 3 mV, respectively. The pH sensor maintained a stable potentiometric response even when bent to a 180° angle or subjected to 50 bending cycles. Moreover, the pH values of six soil samples were reliably determined, and the pH variations in a soil sample were monitored over an 11-day testing period. These results benefit accurate and continuous pH monitoring in agricultural and livestock applications. Graphical
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CONSTRUCTION AND BUILDING MATERIALS
·
2025
·
IF 8
Huiqin Meng,Mingyu Wen,Junyou Shi,Heejun Park,Hanwen Zuo,Yanan Ren,Linxi Lv,Xuefeng Zhao,Hongshuang Du,Xujiao Yang,Zhenpeng Jian
Epoxy resin coatings are widely applied to wood structures and wood product protection. Therefore, the development of epoxy resin nanocomposites with high flame retardancy and UV resistance is of great significance for their widespread application. In this study, Nanocomposite based functional coating was prepared by introducing nanoparticle carbon nitride (g-C 3 N 4 ), aluminum phytate (PA-Al), and nanoparticle tetramethylammonium caged polysilsesquioxanes (POSS) to create a hybrid covering of organic and inorganic materials. The coating effectively protects wood from flame damage by forming a ceramic like structure carbon layer of P-O-Si when exposed to flames. Results showed that epoxy coatings with PA-Al, g-C 3 N 4 and POSS constituents achieved UL-94 V-0 rating. The limiting oxygen index (LOI) was 27.4 %, while THR and HRR values were reduced by 81.9 % and 84.3 %, respectively. Since g-C 3 N 4 had exhibited a strong absorption peak in the ultraviolet (UV) region, the epoxy resin (EP) coating could achieve a blocking rate of 78.41 % and 84.16 % for the ultraviolet A (UVA) and ultraviolet B (UVB) bands, respectively. Meanwhile, the hardness and adhesion of EP coating were as high as 4 H and 5B. Thus, present work provides an optional route for the preparation of nanocomposite UV-resistant and flame retardant epoxy coatings, which can be applied to sustainable wood structural products.
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Materials Today
·
2024
·
IF 21.1
Yilin Wang,Ran Wei,Xijing Yang,Jiahao Liang,Xianda Liu,Shengjun Cheng,Shifan Chen,Ziyue Ling,Yujie Xiao,Yuanting Xu,Weifeng Zhao,Changsheng Zhao
Massive loss of proteins is common in patients on long-term blood purification therapy, there is a strong inverse association between the risk of death and serum albumin concentration. Removing toxins and leaving behind albumin is an arduous task in the field of blood purification. Inspired by the dissociation-transportation process of protein-bound toxins in renal tubule, we propose multi-point photodecomposition accompany with adsorption strategy as a novel treatment modality in hemoperfusion. As a proof of concept, bilirubin is chosen as the research object since it is a typical protein-bound toxin that needs to be transported by strong binding to albumin in blood environment. Interestingly, blue light can efficiently break bilirubin into some highly polar water soluble diazo compounds, the decomposed products of bilirubin are water-soluble and loosely bound to albumin. Herein, graphene quantum dots (GQDs) and polymer science are combined in the nanoarchitectonics processes. The “photodecomposition-adsorption” platform is designed by embedding GQDs in poly (diallyldimethylammonium chloride-acrylamide) (poly (DDAC-AAm) hydrogel (PDMG) microspheres. In order to reduce the influence of cationic polymer on blood component, hyaluronic acid (HA) are coated on the surface of the PDMG (PDMG@HA) microspheres by electrostatic interaction. Owing to the luminescence property of GQDs, the PDMG@HA microspheres emit blue light under ultraviolet activation and decompose bilirubin into water soluble diazo compounds, just like numerous “blue bulbs”. The water-soluble bilirubin debris could be dissociated from albumin and adsorbed by “blue bulbs”, which greatly reduce the metabolic burden on the body. In vitro biocompatibility results demonstrate that the PDMG@HA microspheres show lower protein adsorption and blood cell toxicity than the PDMG microspheres. The photodecomposition and adsorption amount of bilirubin is 187.8 mg/g in vitro . In hyperbilirubinemia rabbit hemoperfusion, the “blue bulbs” remove 70.9 % total bilirubin (TBIL) from plasma and defer the liver damage of biliary obstruction. Notably, the bilirubin photodecomposition is persisted to the end of the treatment, and some of the bilirubin debris have been adsorbed by the “blue bulbs”. The strategy combining both photodecomposition and adsorption opens a new route for the treatment of blood-related diseases.
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ACS Applied Electronic Materials
·
2025
·
IF 4.7
Li Xiao,Xiuxian Li,Zhukang Zhang,Yue Long,Gang Wang,Hengxiang Gong
Integrating wide band gap semiconductor materials with silicon (Si) to create heterojunctions is an effective strategy for enhancing the ultraviolet (UV) sensitivity of optoelectronic devices. However, epitaxially growing high-quality wide band gap films on Si substrates at low temperatures without compromising the properties of Si remains challenging. In this study, we introduce a low-cost mist chemical vapor deposition (CVD) technique to deposit Cs3Cu2I5 perovskite films and fabricate a simple-structured Cs3Cu2I5/n-Si planar heterojunction. This technique enables an orderly deposition and rapid crystallization process, distinct from traditional solution-based methods. Herein, we report for the first time a compact, thick Cs3Cu2I5 film with an average grain size of 5.27 μm and a thickness of approximately 2.8 μm exhibiting orientated growth along the (303) plane. Furthermore, the simply constructed Cs3Cu2I5/n-Si photodiode exhibited a maximum photoresponsivity of 186 mA W–1 and a specific detectivity of 2.5 × 1012 Jones under 278 nm illumination. The on–off cycling tests demonstrated excellent operational stability, with unpackaged devices retaining 90% of their initial photocurrent after two months of storage under ambient conditions.
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Gels
·
2025
·Vol. 11
·期 6
·409
·
IF 5.3
Naiyao Mao,Lingxiao Lan,Qiankun Hun,Jianghua Wei,Xinghua Liang,Yifeng Guo
Gel electrolytes (GEs) play a pivotal role in the advancement of lithium metal batteries by offering high energy density and enhanced rate capability. Nevertheless, their real-world application is hampered by relatively low ionic conductivity and significant interfacial resistance at room temperatures. In this work, we developed a gel electrolyte membrane (GEM) by embedding Zeolitic Imidazolate Framework-8 (ZIF-8) metal–organic frameworks (MOFs) material into a poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) matrix through UV curing. The composite membrane, with 4 wt% ZIF-8, exhibited an ionic conductivity of 1.17 × 10−3S/cm, an electrochemical stability window of 4.7 V, and a lithium-ion transference number of 0.7. The test results indicate that the electrochemical performance of LFP//GEM//Li battery has an initial specific capacity of 168 mAh g−1at 0.1 C rate. At 1 C, the discharge capacity was 88 mAh g−1, and at 2 C, it was 68 mAh g−1. Enhanced ionic transport, improved electrochemical stability, and optimized lithium-ion migration collectively contributed to superior rate performance and prolonged cycle life. This study offers novel insights and methodological advances for next-generation lithium metal batteries technologies.
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危险品化学品经营许可证（带存储）