Environmental Technology & Innovation
·
2025
·
IF 7.1
Yinhua Cui,Yiwen Chen,Qingshan Shi,Jin Feng,Yafeng Song,Junwei Yao,Xiaobao Xie
A growing number of microorganisms are employed in industry nowadays, leading to the extensive generation of microbial waste. Nevertheless, the waste recycling investigation has not yet encompassed the synthesis of nanoparticles. Economically viable nano-selenium (nano-Se) requires additional cost reduction. This study produced cost-effective nano-Se utilizing microbial waste. This reaction was conducted under UV irradiation due to the low activity of microbial waste. After 90 min of UV irradiation, the yield of nano-Se generated from the death-phase eukaryote Saccharomyces cerevisiae ( S. cerevisiae ) waste was 7.46 times more than that of nano-Se produced in darkness. The resultant nano-Se is amorphous, and the nano-Se generated by UV irradiation demostrated a larger size than that produced in darkness. Moreover, unlike the nano-Se generated in darkness or incubators, the nano-Se produced under UV irradiation significantly inhibited the multiplication of MDA-MB-231 cancer cells, demonstrating its enhanced efficacy. The UV-assisted synthesis of nano-Se was also seen during the death phase of the prokaryote Escherichia coli ( E. coli ) waste. After 5 h of UV irradiation, the yield of nano-Se produced by E. coli is 10.80 times more than that produced in darkness. The findings strongly indicate that industrial microbial waste, whether eukaryote or prokaryote, can be employed for the economical production of nano-Se or other nanoparticles.
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产品关联
DOI
高影响因子
Coatings
·
2017
·Vol. 7
·期 8
·117
·
IF 2.175
Wenjing Xia,Nianqing Zhu,Rongjie Hou,Wengui Zhong,Mingqing Chen
The polyurethane prepolymer terminated with a double bond was synthesized using isophorone diisocyanate (IPDI), hydroxyl terminated polybutadiene (HTPB), 1,4-butanediol (BDO), and 2-hydroxyethyl acrylate (HEA). Then, a series of innovative UV-curable polyurethane coatings were prepared by blending ene-terminated polyurethane, fluoroacrylate monomer, and multifunctional thiol crosslinker upon UV exposure. The incorporation of fluoroacrylate monomer and multifunctional thiols into polyurethane coatings significantly enhanced the hydrophobic property, mechanical property, pencil hardness, and glossiness of the polyurethane coatings. This method of preparing UV crosslinkable, hydrophobic polyurethane coatings based on thiol-ene chemistry exhibited numerous advantages over other UV photocuring systems.Keywords:polyurethane;fluorine-containing;UV-crosslinkable
研究领域:
材料科学
·
化学工程
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DOI
高影响因子
POLYMER
·
2021
·
IF 4.43
Runan Gong,Han Cao,Hongming Zhang,Lijun Qiao,Xianhong Wang
Though cationic waterborne polyurethane (CWPU) has been regarded as an important environmental friendly material, it is hampered by poor water resistance due to incorporation of excessive hydrophilic groups to assure the stability of water dispersion. Here UV-curing in combination with terminal hydrophilicity induced dispersion strategy was employed to prepare water-resistant CWPU from CO 2 -polyol which was an oligoethercarbonate diol from telomerization of propylene oxide and CO 2 . In this system, multiple vinyl ether side chains were incorporated on CWPU backbone using 3-allyloxy-1,2-propanediol as functional chain extender to achieve efficient UV curing, and a small amount of terminal hydrophilicity was designed to ensure the stable dispersion of CWPU. The typical UV-cured CWPU film reached water absorption equilibrium at 72 h, maintaining water absorption rate as low as Ca . 5.8% even immersed in water for 240 h. Moreover, compared with traditional polyester and polyether polyols from petroleum resources, UV-cured CWPU from CO 2 -polyol not only used partially sustainable raw material like CO 2 , but also provided excellent water resistance in corrosive media for a long time (tensile strength retention above 90% for 336 h) due to hydrolysis resistant structure like carbonate and ether units in CO 2 -polyol.
研究领域:
材料科学
·
环境科学
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DOI
高影响因子
ACS Sensors
·
2023
·
IF 8.9
Huangjie Lu,Hailong Huang,Junpu Yang,Zhaofa Zheng,Xue Dong,Lianjie Zhao,Chao Xu,Jun Hu,Hongtao Liu,Yuan Qian,Jian-Qiang Wang,Jian Lin
Developing ultraviolet (UV) radiation sensors featuring high sensitivity, ease of operation, and rapid readout is highly desired in diverse fields. However, the strategies to enhance sensitivity of UV detection remain limited particularly for photochromic materials, which show colorimetric response toward UV irradiation. Guided by our initial goal of facilitating easier handling, we formulated a viologen derivative ([H2L]-SC) incorporating hydrogel-based UV sensor which not only inherits the photochromism of [H2L]-SC but also engenders an unprecedented reversible photoelectrochromic response that is absent in either [H2L]-SC or hydrogel alone. Judicious synergy between photochromic [H2L]-SC and polyacrylamide (PAM) converts the colorimetric response of [H2L]-SC into the electrical resistance change of [H2L]-SC@PAM, which amplifies the UV sensitivity of [H2L]-SC by 2 orders of magnitude. Explicitly, the limit of detection (LOD) for UV decreases from 296.3 mJ/cm2 based on the UV–vis absorption spectra of [H2L]-SC to 2.83 mJ/cm2 derived from the resistance variation of [H2L]-SC@PAM. Moreover, linear correlation between the resistance reduction rate of [H2L]-SC@PAM and UV dose rate can be established, rendering it as a dual platform for quantifying both the accumulated UV dose and the instant dose rate. In addition, the proposed strategy based on constructing photoelectrochromic hybrids offers a new pathway to boost the UV sensitivity that could be universal for other photochromic materials.
研究领域:
材料科学
·
传感技术
·
化学工程
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DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2017
·
IF 4.811
Xin Feng,Yafei Zhao,Yaoquan Jiang,Miao Miao,Shaomei Cao,Jianhui Fang
High-efficient transparent UV-blocking nanocellulose (NC) films were successfully assembled by pressured-extrusion of the composites of carbon dots (CDs), 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO) radical mediated oxidized nanocellulose (ONC) and ZnO nanostructures. ONC nanofibrils were firstly extracted from bamboo fibers and subsequently prepared by applying TEMPO oxidation. The as-obtained CDs-ONC-ZnO films exhibited high visible light transparency, excellent thermal stability and enhanced UV-blocking properties. Compared to the previously designed NC-ZnO films, CDs-ONC-ZnO films presented significant increase of UV-blocking ratio (UVR) with the same amounts of ZnO. Moreover, the UVR of CDs-ONC-s-ZnO film with 4 wt% sheet-like ZnO (s-ZnO) at 300 nm and 225 nm is 92.74% and 98.99%, better than the same condition of CDs-ONC-b-ZnO film added with belt-like ZnO (b-ZnO) and CDs-ONC-p-ZnO film added with commercial particulate ZnO (p-ZnO). An interesting discovery is that when adding 4 wt% p-ZnO, the UVR of CDs-ONC-p-ZnO film is very close to the value of NC-s-ZnO film with the same amount of s-ZnO.
研究领域:
材料科学
·
纳米技术
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Ximing Zhong,Jie Sheng,Heqing Fu
In this paper, a novel anti-smudge coating cured by natural sunlight exposure or 35 s of UV irradiation was prepared. The coating shows highly transparency and it can be used in various substrates, including heat-sensitive materials. Besides, this coating repels against water, ink, cooking oil, crude oil, artificial fingerprint liquid, and protects substrates against strong acid, strong base, salt solution and organic solvent, indicative of striking self-cleaning and protective properties. And this coating can be used to fabricate anti-smudge products in various colors without compromising its anti-smudge properties. Optional curing strategies and rapid UV-curing property make this novel coating can be used in the special area.
研究领域:
材料科学
·
表面工程
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DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2024
·Vol. 31
·期 9
·14239-14253
·
IF 0
Zheng Yixun,Xiao Zhenjun,Lin Yijie,Fang Zheng,Liu Deyang,Lin Zifeng,Zhang Qianxin,Chen Ping,Zhang Zhenheng,Xv Lu,Lv Wenying,Liu Guoguang
In response to antibiotic residues in the water, a novel advanced oxidation technology based on MgO 2 was used to remediate sulfamethazine (SMTZ) pollution in aquatic environments. Upon appropriate regulation, the remarkable removal efficiency of SMTZ was observed in a UV/MgO 2 system, and the pseudo-first-order reaction constant reached 0.4074 min −1 . In addition, the better performance of the UV/MgO 2 system in a weak acid environment was discovered. During the removal of SMTZ, the pathways of SMTZ degradation were deduced, including nitration, ring opening, and group loss. In the mineralization exploration, the further removal of residual products of SMTZ by the UV/MgO 2 system was visually demonstrated. The qualitative and quantitative researches as well as the roles of reactive species were valuated, which revealed the important role of ·O 2 − . Common co-existing substances in actual wastewater such as NO 3 − HA, Cl − , Fe 2+ , Co 2+ , and Mn 2+ can slightly inhibit the degradation of SMTZ in the UV/MgO 2 system. Finally, the capacity of efficient degradation of SMTZ in actual wastewater by the UV/MgO 2 system was proved. The results indicated that the innovative UV/MgO 2 system was of great practical application prospect in antibiotic residue wastewater remediation.
研究领域:
环境科学
·
化学工程
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DOI
PubMed
International Journal of Nanomedicine
·
2017
·
IF 4.3
Shuhui Li,Tianxue Zhu,Jianying Huang,Qingqing Guo,Guoqiang Chen,Yuekun Lai
A facile method was developed to endow cotton fabric with remarkable antibacterial and ultraviolet (UV)-protective properties. The flower-like TiO2 micro-nanoparticles were first deposited onto cotton fabric surface via hydrothermal deposition method. Then, the Ag NPs with a high deposition density were evenly formed onto TiO2@cotton surface by sodium hydroxide solution pretreatment and followed by in situ reduction of ANO3. This work focused on the influence of different hydrothermal reaction durations and the concentration of AgNO3 on antibacterial activity against relevant microorganisms in medicine as well as on the UV-blocking property. Ag NPs-loaded TiO2@cotton exhibited high antibacterial activity with an inhibition rate higher than 99% against Staphylococcus aureus and Escherichia coli bacteria. Moreover, the as-prepared cotton fabric coated with Ag NPs and TiO2 NPs demonstrated outstanding UV protective ability with a high ultraviolet protection factor value of 56.39. Morphological image of the cells revealed a likely loss of viability as a result of the synergistically biocidal effects of TiO2 and Ag on attached bacteria. These results demonstrate a facile and robust synthesis technology for fabricating multifunctional textiles with a promising biocidal activity against common Gram-negative and Gram-positive bacteria.
研究领域:
材料科学
·
生物医学
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DOI
高影响因子
Pigment & Resin Technology
·
2023
·Vol. 53
·期 5
·650-658
·
IF 1.4
Fuping Bian,Shudong Lin
PurposeThis paper aims to investigate the effects on coatings performance in the epoxy silicone resin system owing to the existence of the different chain length of open-chain epoxy monomer. In this paper, [4-Methylphenyl-(4–(2-methylpropyl) phenyl)]iodonium as photoinitiator was added into epoxy silicone resin by ultraviolet (UV)-cured polymerization to investigate the effects on coatings performance owing to the existence of the different chain length of open-chain epoxy monomer.Design/methodology/approachA simple hydrosilylation reaction was used to synthesize epoxy-based silicone prepolymers by using hydrogen-terminated polydimethylsiloxane, 1,2-epoxy-5-hexene, 1,2-epoxy-7-octene and 1,2-epoxy-9-decene as precursors.FindingsThe results revealed that the glass transition temperatures (Tg) and hydrophobicity increased with the chain length of open-chain epoxy monomer in the UV curable epoxy-based silicone coatings, and these films had excellent heat resistance, hydrophobicity, antigraffiti and ink removal properties.Research limitations/implicationsThe cationic photocuring systems are not susceptible to the effect of oxygen inhibition. However, the limitation of cationic light curing process is that it requires a long curing time.Originality/valueThe coatings prepared via the UV curing approach can provide superior antismudge effects, and thus they are promising candidates for use in various industries, especially in fields such as antismudge coatings and antigraffiti coatings.
研究领域:
材料科学
·
化学工程
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DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2019
·Vol. 30
·期 6
·1906232
·
IF 15.621
Rudai Zhao,Nan Ma,Kai Song,Ya Yang
BiFeO 3 (BFO) is a potentially important Pb-free ferroelectric with a narrow bandgap and is expected to become a novel photodetector. The photocurrent in BFO 3 strongly depends on the temperature but only a few studies have investigated in detail the relationships between photocurrent and temperature. Here, the temperature-dependent photocurrent and the corresponding photosensing properties of a Ag/BFO/indiumtin oxide (ITO) photodetector based on an optimized planar-structured electrode configuration are investigated. The photocurrent and responsivity of the BFO 3 -based photodetector can first be increased and then be decreased with increasing temperature. The largest photocurrent and responsivity can reach 51.5 µA and 6.56 × 10 −4 A W −1 at 66.1 °C, which is enhanced 126.3% as compared with that at room temperature. This may be caused by the temperature-modulated bandgap and barrier height in Ag/BFO/ITO device. This study clarifies the relationship between photosensing performance and the operating temperature of BFO-based photodetector and will push forward the application of ferroelectric materials in photoelectric field.
研究领域:
材料科学
·
光电领域
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DOI
高影响因子
Journal of Materials Chemistry B
·
2026
·
IF 6.2
Jianxi Xiao,Ying Guo,Yi Xie,Yongjun Li,Bei Tian
Acute ultraviolet exposure disrupts the epidermal barrier, induces oxidative stress, and accelerates extracellular matrix degradation, necessitating effective strategies for photodamage repair. Here, we establish a molecular-weight-graded agarose system-Aga-U, Aga-H, Aga-M, and Aga-L-to assess the effect of molecular weight on the physicochemical and biological properties of agarose. Controlled hydrolysis generated agarose fractions with progressively reduced molecular weight, resulting in enhanced solubility, hydrophilicity, fluidity, and antioxidant capacity. All fractions exhibited good cytocompatibility and promoted zebrafish caudal-fin regeneration, with Aga-L demonstrating the strongest bioactivity. In vitro and in vivo evaluations, including fibroblast assays and zebrafish and UV-induced acute photodamage mouse models, revealed that Aga-L most effectively restored the epidermal barrier, reduced oxidative stress, and enhanced collagen deposition. Molecular analyses showed that Aga-L downregulated MMP-1, MMP-2, MMP-9, p-c-Fos, and p-c-Jun and upregulating Nrf2, HO-1, Col I and Col III. These findings identify low-molecular-weight agarose as a potent bioactive polysaccharide for repairing UV-induced skin injury and provide a basis for developing agarose-based therapeutic strategies.
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DOI
PubMed
高影响因子
POLYMER
·
2026
·
IF 5.1
Huanyang Yu,Zhicheng Tian,Yan Wang,Weiyu Tian,Xinmeng Shen,Liyan Wang
Developing biodegradable smart packaging materials is a key strategy to address plastic pollution. A biodegradable smart pH-responsive film (CGTR) was developed by using the non-covalent synergistic interaction of tannic acid (TA) and riboflavin (RF) in the chitosan/gelatin (CG) matrix. Performance characterization reveals that the TA/RF interaction not only achieves uniform dispersion within the matrix but also significantly enhances the film's overall performance. The film demonstrates complete UV barrier capability, with a free radical scavenging rate increasing by 57.17 % within 20 minutes and reaching 99.11 % after 180 minutes. Additionally, its water vapor barrier, mechanical strength, and thermal stability have been effectively improved. In summary, CGTR film as an eco-friendly smart packaging material shows great potential in food preservation and visual freshness indicator.
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DOI
高影响因子
危险品化学品经营许可证（带存储）