ACS Applied Materials & Interfaces
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2023
·
IF 9.5
Nini Li,Xiaohong Ji,Somnath Mukherjee,Bing Yang,Yuqing Ren,Changhao Wang,Yashao Chen
In recent years, sunscreens’ adverse impacts on the environment and biology have gained wide attention. The improvement of sunscreen safety has become one of the major priorities in skin photoprotection research. It is an effective strategy to develop bionic photoprotective materials by simulating the photoprotective mechanism existing in nature. Inspired by the photoprotective mechanisms of skin and plant leaves, the bionic photoprotective material CS-SA-PDA nanosheet was developed using the free radical grafting method and Michael addition, with natural melanin analogue polydopamine (PDA) nanoparticles and plant sunscreen molecular sinapic acid (SA) as sun protection factors and natural polymer chitosan (CS) as the connecting arm. The results show that CS-SA-PDA can effectively shield UVB and UVA due to the possible synergistic effect between PDA and SA. The introduction of polymer CS significantly improved the photostability of SA and reduced the skin permeability of PDA nanoparticles. The CS-SA-PDA nanosheet can also effectively scavenge photoinduced free radicals. Furthermore, in vivo toxicity and anti-UV evaluations confirm that CS-SA-PDA has no skin irritation and is excellent against skin photodamage, which makes it an ideal skin photoprotective material.
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高影响因子
Journal of Environmental Sciences
·
2022
·
IF 6.796
Jing Deng,Anhong Cai,Xiao Ling,Qian Sun,Tianxin Zhu,Qingsong Li,Xueyan Li,Weizhu Chen
As an active metabolite of venlafaxine and emerging antidepressant, O-desmethylvenlafaxine (ODVEN) was widely detected in different water bodies, which caused potential harm to human health and environmental safety. In this study, the comparative work on the ODVEN degradation by UV (254 nm) and UV-LED (275 nm) activated sodium percarbonate (SPC) systems was systematically performed. The higher removal rate of ODVEN can be achieved under UV-LED direct photolysis (14.99%) than UV direct photolysis (4.57%) due to the higher values of photolysis coefficient at the wavelength 275 nm. Significant synergistic effects were observed in the UV/SPC (80.38%) and UV-LED/SPC (53.57%) systems and the former exhibited better performance for the elimination of ODVEN. The degradation of ODVEN all followed the pseudo-first-order kinetics well in these processes, and the pseudo-first-order rate constant ( k obs ) increased with increasing SPC concentration. Radicals quenching experiments demonstrated that both ·OH and CO 3 · − were involved in the degradation of ODVEN and the second-order rate constant of ODVEN with CO 3 · − (1.58 × 10 8 (mol/L) −1 sec −1 ) was reported for the first time based on competitive kinetic method. The introduction of HA, Cl − , NO 3 − and HCO 3 − inhibited the ODVEN degradation to varying degrees in the both processes. According to quantum chemical calculation, radical addition at the ortho-position of the phenolic hydroxyl group was confirmed to be the main reaction pathways for the oxidation of ODVEN by ·OH. In addition, the oxidation of ODVEN may involve the demethylation, H-abstraction, OH-addition and C-N bond cleavage. Eventually, the UV-LED/SPC process was considered to be more cost-effective compared to the UV/SPC process, although the UV/SPC process possessed a higher removal rate of ODVEN.
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CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Qiaorong Guo,Dongbin Wei,Chuanfang Zhao,Cuiping Wang,Haijun Ma,Yuguo Du
Physical UV-blocker TiO 2 nanocomposites and chemical sunscreen benzophenones (BPs) have been frequently detected in the aquatic environment, their combined fates and potential risk should be concerned. In this study, the typical cosmetic grade UV-blocker TiO 2 nanocomposites (labeled as CG-TiO 2 ) and 2,4-dihydroxy benzophenone (BP-1) were targeted, and the effects of CG-TiO 2 on the transformation of BP-1 during UV irradiation were explored. It was found that CG-TiO 2 destruction did not form toxic products, while they could promote the chemical reactions of BP-1 that will lead to highly toxic products during UV irradiation. More importantly, UV irradiation could break the organic coatings on CG-TiO 2 , the broken CG-TiO 2 exhibited stronger catalytic activity on BP-1 and form highly toxic products during UV irradiation. Total of 24 transformation products were tentatively identified, including hydroxyl BPs, hydroxyl dibenzo-p-dioxins, hydroxyl benzoyl benzoquinones, etc. The main transforamtion mechanisms of BP-1 included hydroxylation, radical coupling, oxidation, decarboxylation, Norrish type I reaction, and ring closure through electrophilic substitution. This study highlighted that physical UV-blocker CG-TiO 2 promoted the transformation of chemical sunscreen BP-1 and generated higher toxicity during UV irradiation. It was expected that these results would provide scientific data for evaluating the fates and potential risk of sunscreens in the environment.
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Science China-Chemistry
·
2024
·
IF 10.4
Wang Chao,Zhang Rong,Zhang Jianhua,Zhang Xueqian,Zhang Hengjie,Cao Huan,Yang Zhen,Li Yiwen
Agents with robust ultraviolet (UV) absorption capabilities play a vital role in safeguarding organisms and inorganic materials from UV damage. Nonetheless, the synthetic procedures towards these UV absorbers are usually lengthy and complicated, accompanied by undesirable side reactions and the generation of toxic substances. In nature, allomelanin, a class of melanins variant found in melanized fungi near the Chernobyl nuclear power plant, plays crucial roles in the cell wall of melanized fungi, offering resistance to harsh external environments and promising UV resistance capabilities. Notably, allomelanin can be rapidly biosynthesized via the polymerization of 1,8-dihydroxynaphthalene in presence of enzymes in fungi. Inspired by this, we report here a green enzymatic polymerization strategy to efficiently and eco-friendly synthesize polydihydroxynaphthalene (PDHN)-based artificial allomelanin nanoparticles (NPs) with interesting features. Theoretical calculations and experimental results demonstrated that the PDHN NPs exhibited excellent UV absorption capacity, surpassing another widely used artificial melanin, polydopamine (PDA). Moreover, the light absorption mechanism of PDHN NPs was systematically elucidated for the first time. Then, the PDHN NPs were incorporated with polyvinyl alcohol (PVA) to create an anti-aging composite film with significantly enhanced UV shielding ability. The potential of these composite films in safeguarding plants from UV damage was meticulously verified. Remarkably, these PDHN NPs were first found to produce hydroxyl radicals (•OH) under UV irradiation, offering antibacterial properties that expand their potential applications.
研究领域:
材料科学
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环境科学
·
生物技术
·
高分子化学
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WATER RESEARCH
·
2019
·
IF 7.913
Ying Wan,Pengchao Xie,Zongping Wang,Jiaqi Ding,Jingwen Wang,Songlin Wang,Mark R. Wiesner
In this study, ultraviolet based advanced oxidation processes (UV-AOPs) including UV/persulfate (UV/PS), UV/chlorine, and UV/H 2 O 2 were employed to alleviate ultrafiltration membrane fouling during the treatment of algae-laden water. The results show that UV/PS pretreatment exhibited the best performance on fouling control, followed by the UV/H 2 O 2 pretreatment . The fouling mitigation performance improved with the increase of oxidant dose. However, UV/chlorine pretreatment aggravated membrane fouling, and the irreversible fouling resistance increased by five times compared with that of raw water. The dissolved organic carbon (DOC) in the algae-laden solution was reduced after UV/PS pretreatment, while either UV/chlorine or UV/H 2 O 2 pretreatment had little influence on the DOC of feed water. UV/PS and UV/H 2 O 2 pretreatments were effective in the degradation of fluorescent compounds, thus reducing the deposition of organic matter on the membrane surface. Additionally, the decreased concentration of hydrophobic organics, algal cells, and debris in feed water after UV/PS pretreatment was also contributed to the fouling alleviation. The aggravated irreversible fouling after UV/chlorine pretreatment was probably ascribed to the increased accumulation of hydrophobic fractions in the membrane pores. Modeling result indicates that membrane fouling during the filtration of raw algae-laden water was dominated by intermediate blocking and cake filtration mechanisms. Both UV/PS and UV/H 2 O 2 pretreatments transformed the combined fouling mechanism into standard blocking, while UV/chlorine pretreatment aggravated the pore blocking in the initial filtration period.
研究领域:
环境科学
·
水处理工程
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2020
·
IF 7.489
Huijing Ma,Bing Yu,Qingping Wang,Gary Owens,Zuliang Chen
While Fe-based metal-organic frameworks (MOFs) can be used to remove antibiotics by adsorption, knowledge of how antibiotics are degraded by MOFs is still limited. In this study, one Fe-based MOF, NH 2 -MIL-88B was used to remove pefloxacin from aqueous solution via a combination of adsorption and Fenton-like oxidation. NH 2 -MIL-88B exhibited a high adsorption capacity for pefloxacin (41.37 mg·g −1 ), with >99% removal efficiency within 120 min based on Fenton-like oxidation. To better understand the mechanisms involved in integrated adsorption and Fenton-like oxidation, various advanced characterization techniques were used to monitor the changes in morphology and composition of NH 2- MIL-88B before and after removal of pefloxacin. Scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDS), Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) all supported adsorption and Fenton oxidation of pefloxacin. In addition, the pefloxacin degradation products identified by LC-UV and LC-MS provided information on the potential adsorption-Fenton oxidation mechanism. These results suggested that NH 2 -MIL-88B has remarkably potential to be used in an integrated adsorption and Fenton-like process for the removal of antibiotics from aqueous solution.
研究领域:
环境科学
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化学工程
·
材料科学
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SOLAR ENERGY
·
2018
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IF 4.374
Huajun Chen,Wenjie Tian,Wuxiu Ding
Metallic sliver-doped mesoporous Al 2 O 3 fibers (meso-Ag/Al 2 O 3 ) that can harvest visible light to speed up solar water purification, were synthesized by one-pot hydrothermal method. Insightful analyses of XRD, XRF and XPS of meso-Ag/ Al 2 O 3 verified that metallic silver occupied interstitial positions of Al 2 O 3 lattice forming interstitial solid solution. N 2 adsorption/desorption illustrated that meso-Ag/Al 2 O 3 exhibited significantly increases in the specific surface area, pore volume and average pore diameter after doping with silver. The UV–Vis diffuse reflectance spectra and disinfection performance indicated that meso-Ag/Al 2 O 3 can harvest visible light to promote the conversion of dioxygen to ROS for water disinfection compared with the widely used TiO 2 . With our approach, we achieved water disinfection of >99.999% inactivation of bacteria in 120 min with a small amount of material (8 mg/L) under simulated visible light.
研究领域:
环境科学
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材料科学
·
水处理
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Analytical Methods
·
2014
·Vol. 6
·期 5
·1563-1568
·
IF 1.938
Huang Yang,Li Kang,Shao Hui Kai,Liu Sheng Quan,Xiang Fei Jun
A method using molecularly imprinted solid-phase extraction combined with RP-HPLC-UV was developed for determination of liquiritin (LQR) in rat plasma after oral administration of Compound Liquorice Tablets (CLTs). To this end, molecularly imprinted polymers were prepared by in situ polymerization, using LQR as the template, acrylamide as the functional monomer, and ethylene glycol dimethacrylate as the crosslinker, whose solid-phase extraction properties for liquiritin were evaluated by HPLC-UV. The enrichment and extraction recovery were investigated in the study after the extraction procedure was optimized. The recovery was larger than 85.0% and the RSD was less than 10.0%. The calibration curve was expressed as y = 16 004x − 1.864 (r = 0.996) with a linear range of 0.007–1.683 μg mL−1. Besides, the Tmax was 0.5 h for liquiritin and the Cmax was 0.8 μg mL−1 after oral administration of compound liquorice tablets. In addition, the pharmacokinetic parameters were calculated using a two-compartment model. The results indicated that the monolithic polymer pipette presented a good extraction efficiency for liquiritin. At the same time, the results indicated that the index components could basically reveal the pharmacokinetic behavior. This study was aimed to explore an approach that could be applied to promulgate the pharmacokinetics and provide more information for clinical applications.
研究领域:
药理学
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分析化学
·
生物医学工程
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ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Hongbo Xia,Zikang Wu,Qiyue Tang,Zijian Yang
Ultraviolet (UV) irradiation is dangerous and can cause serious skin diseases if skin is excessively exposed to it. Thus, it is highly desirable for human health to monitor the UV radiation intensity. In this report, a flexible and stretchable dual-response UV radiation detector is reported by integrating UV-responsive color-switchable WO3 quantum dots (QDs) with an electrical hydrogel. With the radiation intensity of UV increasing from 0.5 to 10 mW/cm2, the color of the hydrogel switched to dark blue gradually due to the excellent photochromic property of WO3 QDs to UV radiation. Furthermore, a linear relationship can be established between color difference and UV radiation intensity. Hence, the color difference of the hydrogel under solar UV irradiation can be used to estimate the solar UV radiation intensity in daily life. In addition, when the UV radiation intensity is greater than 10 mW/cm2, the photochromic hydrogel converts the colorimetric response into the electrical resistance change. Thus, due to its excellent photochromic and electrical resistance response properties for UV irradiation, the prepared hydrogel provides an idea for developing novel detection instruments.
研究领域:
材料科学
·
生物医学工程
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Water
·
2022
·Vol. 14
·期 3
·503
·
IF 3.53
Chenyan Hu,Qiangbing Wang,Yi-Li Lin,Yeye Zhu,Cun Xiong,Dandan Huang,Ling Xu
As the detection of micropollutants in various water resources is commonly reported, developing an efficient technology to remove them to maintain water safety has become a major focus in recent years. The degradation kinetics of iopromide, one of a group of iodinated X-ray contrast media (ICM), using advanced oxidation processes of ultraviolet/chlorination (UV/Cl2) and UV/persulfate (UV/PS) oxidation were investigated in this research. The results show that iopromide degradation fitted pseudo-first-order kinetics, and the rate constants were calculated as 2.20 (± 0.01) × 10−1min−1and 6.08 (± 0.10) × 10−2min−1in UV/Cl2and UV/PS, respectively. In the two systems, the degradation rates were positively correlated with the initial concentrations of HOCl and PS, respectively. In the UV/Cl2system, the degradation rate of iopromide reached a maximum at pH 7, while in the UV/PS system, pH had only a slight effect on the degradation rate. Chloride in water had a negligible effect on iopromide degradation, whereas bromide inhibited iopromide degradation in the UV/Cl2system. The contributions of UV irradiation, •OH, and RCS to iopromide degradation during UV/Cl2treatment were calculated as 20.8%, 54.1%, and 25.1%, respectively. One carbonated and three nitrogenated disinfection by-products (C-DBP (chloroform) and N-DBPs (dichloroacetonitrile, trichloronitromethane, and trichloroacetone)) were detected at relatively high levels, along with three emerging iodinated DBPs (dichloroiodomethane, monochlorodiiodomethane, and triiodomethane). More C- and N-DBPs were generated in the UV/Cl2and UV/PS systems than in UV irradiation, while considerably higher I-DBPs were generated in UV irradiation than in the other two systems. Thus, it is essential to pay attention to DBP formation when UV/Cl2or UV/PS is used to treat iopromide in water. In order to better control the generation of carcinogenic and toxic I-DBPs, Cl2or PS combined with UV should be adopted for iopromide degradation, instead of UV alone, for providing safe drinking water to the public.Keywords:iodinated X-ray contrast media (ICM);kinetics;UV/chlorination;UV/persulfate oxidation;contribution of radicals;disinfection by-products (DBPs)
研究领域:
环境科学
·
水处理工程
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COLLOIDS AND SURFACES B-BIOINTERFACES
·
2026
·
IF 5.6
Zixin Kang,Kehan Du,Zhuo-Ran Yang,Shunlan Luo,Xiaoping Zeng,Dawei Wang,Hongyang Zhao,Xiaowen Ou,Qianqian Liu,Hao Jiang,Jiangyu Wu
Ultraviolet radiation induces skin carcinogenesis through DNA damage and oxidative stress, driving demand for high-efficacy sunscreens. Current organic filters (e.g., octyl methoxycinnamate, OMC) suffer from narrow spectral coverage and phototoxicity. To address these limitations, we engineered OMC-loaded hollow mesoporous silica nanoparticles with polydopamine coating (OMC@HMSN@PDA). This nanoplatform achieved: (i) synergistic broad-spectrum protection, the sun protection factor (SPF) and UVA protection factor (UVAPF) up to 54 ± 0.74, 26.8 ± 6 with the concentration of 6 wt% OMC respectively, exceeding OMC@HMSN by 10.4-fold in UVB and 11.2-fold in UVA attenuation; (ii) 93.1 ± 1.2 % of DPPH and 98.5 ± 2.5 % of ABTS radical scavenging at 10 µg mL −1 , and 94.6 ± 0.03 % intracellular reactive oxygen species (ROS) suppression; and (iii) prevention of the payload leakage and photo-instability of OMC, resolution of OMC’s phototoxicity with above 80 % cell viability in vitro . In vivo studies demonstrated prevention of UV-induced epidermal hyperplasia and lower inflammation. This technology establishes a promising approach for photoprotection integrating UV filtering, antioxidant activity, and enhanced safety.
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JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2026
·
IF 6
Jiamin Wang,Qifa Huang,Zihao Huang,Haoyue Hou,Jiawei Hou,Kaihui Xu,Hao Yuan,Sa Zeng,Tao Meng
Pickering emulsions hold significant promise as platforms for encapsulating bioactive compounds. However, the platform is limited due to narrow UV protection spectra and the lack of reactive oxygen species (ROS) inhibition. Herein, a Pickering emulsion system stabilized by mesoporous silica particles loaded with organic UV filters is designed to protect photosensitive actives. In this tailored protective system, firstly, mesoporous silica particles loaded with different UV filters (UF@MPS) were synthesized by sol–gel method. Subsequently, these particles underwent silicification through a secondary sol–gel process, yielding silicified particles (UF@MPS@S), which not only reduces the free radicals generated by the photodegradation of the UV filters by 89.3%, but also adjusts the particle wettability to a favorable three phase contact angle of 89.6° for emulsion formation. For UVA protection, the AB@MPS@S-stabilized Pickering emulsion possesses high UVA-blocking efficiency, leading to a retention of UVA-sensitive astaxanthin that is 94% higher than that in the free group after 10-day UV exposure. For UVB protection, the OMC@MPS@S-stabilized emulsion shows UVB-blocking capacity, resulting in 91% higher retention of UVB-sensitive vitamin E compared to the free group after 10-day UV exposure. This work establishes a versatile photoprotection platform for diverse bioactive compounds with varying UV-sensitive spectra, with potential for extension into pharmaceutical, food, and cosmetic applications.
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危险品化学品经营许可证（带存储）