ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
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2021
·Vol. 29
·期 4
·5043-5051
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IF 4.223
Xu
Jing,Wu Yi,Ma Mengling,Luo Tao,Xia Jun,Zhang Xiang
Iron species that occur in natural surface water could affect the photochemical behavior of pollutants. Complexation between iron species and polycarboxylate or heavy metals has been widely reported, where the ligands could be oxidized via ligand-to-metal charge transfer (LMCT) by light inducement. Such complexation and photochemical reactions might also occur for low valance metal-containing organic compounds, which is worthy of investigation. This work studied the phototransformation of p -arsanilic acid (ASA), an organic arsenic compound that is widely used as a feed additive in the poultry industry, by colloidal ferric hydroxide (CFH) using black light lamps ( λ = 365 nm) as the light source. The results revealed the contribution to ASA transformation at circumneutral conditions by CFH through an LMCT process, which is the same as that for As(III). The complexation between ASA and CFH was investigated using UV–vis spectroscopy. The estimated equilibrium constant for the CFH–ASA complex was log K f271 = 4.22. The analysis of the photoproducts found the generation of both inorganic and organic arsenic. Our findings confirmed the similarities in the photochemical mechanisms of ASA and As(III) in the presence of CFH. The results help in further understanding the fate of organoarsenicals in the surface water environment.
研究领域:
环境科学
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化学
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PubMed
高影响因子
JOURNAL OF APPLIED PHYSICS
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2021
·Vol. 129
·期 12
·
IF 2.546
Liu Bo-Mei,Gan Wei-Jiang,Lou Sun-Qi,Zou Rui,Tang Qiang,Wang Cheng-Xin,Jiao Ju,Wang Jing
The development of functionalized persistent-luminescent (PersL) materials is currently receiving intense interest for diverse applications. However, PersL materials emitting ultraviolet light in the 315–400 nm (UVA) range are lacking. Herein, a series of x-ray-activated PersL materials based on ABCO 4 -type structures with random cation arrangements are developed. Comprehensive experiments confirm that materials featuring random cation arrangements are sufficiently general to act as host materials for PersL. Experimental results indicate that as-synthesized SrLaXO 4 :Bi 3+ (X = Al, Ga, In) powders have tunable PersL bands covering the UV-to-visible range after x-ray irradiation. Taking advantage of the depth-independent nature of x-ray illumination in tissues, UVA Persl composites using the matched photosensitizer g-C 3 N 4 (SrLaAlO 4 :Bi@g-C 3 N 4 ) are well suited for x-ray-activated photodynamic therapy, as proven by tests for singlet-oxygen ( 1 O 2 ) generation. Therefore, we suggest that the proposed concept be applied to discover additional functionalized PersL materials for clinical cancer therapy in the future.
研究领域:
材料科学
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医学
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生物工程
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DOI
高影响因子
WATER RESEARCH
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2022
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IF 13.4
Yongjie Liu,Yiwei Cai,Guiying Li,Wanjun Wang,Po Keung Wong,Taicheng An
The stress response of antibiotic-resistant bacteria (ARB) and the spread of antibiotic resistance genes (ARGs) pose a serious threat to the aquatic environment and human beings. This study mainly explored the effect of the heterogeneous photocatalytic oxidation (UVA-TiO 2 system) on the stress response mechanism of ARB with different antibiotic resistance action targets, including the cell wall, proteins, DNA, RNA, folate and the cell membrane. Results indicate that the stress response mechanism of tetracycline- and sulfamethoxazole-resistant E. coli DH5α, which targets the synthesis of protein and folate, could rapidly induce global regulators by the overexpression of relative antibiotic resistance action target genes. Different stress response systems were mediated via cross-protection mechanism, causing stronger tolerance to an adverse environment than other ARB. Moreover, the photocatalytic inactivation mechanism of bacterial cells and a graded response of cellular stress mechanism caused differences in the intensity of the stress mechanism of antibiotic resistance action targets. E. coli DH5α resistant to cefotaxime and polymyxin, targeting synthesis of the cell wall and cell membrane, respectively, could confer greater advantages to bacterial survival and higher conjugative transfer frequency than E. coli DH5α resistant to nalidixic acid and rifampicin, which target the synthesis of DNA and RNA, respectively. This new perspective provides detailed information on the practical application of photocatalytic oxidation for inactivating ARB and hampering the spreading of ARGs in the aquatic environment.
研究领域:
环境科学
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微生物学
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生物技术
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PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2021
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IF 10.588
Yulun Nie,Xiaofei Sun,Miao Wang,Xike Tian,Chao Yang,Chu Dai
UV-H 2 O 2 is the most widely used oxidizing system with established effectiveness and a high level of technical development for practical application. However, little attention was paid on the effect of suspended particles in natural water on organic contaminants removal via UV-H 2 O 2 technique. In this study, this effect of suspended particles to enhance the contaminant degradation was explored using silica/alumina-based oxides (MCM-41 and Al@MCM-41) as the representative. The results showed that MCM-41 had no effect on OFX degradation compared with UV-H 2 O 2 . While the degradation efficiency and reaction rate were greatly enhanced at a pH range of 3.0–9.0 especially at acidic pH values (3.0–5.0) in the presence of Al@MCM-41. The probe experiments proved that OFX adsorption followed by surface reaction process played an important role to enhance the performance of UV-H 2 O 2 . Based on the characterization results, the positive effect of suspended particles was not related to their surface area and pore size distribution, but dependent on the chemical composition and surface acid-base property. The suspended particles can provide an active surface composed of acid and base sites. The base site can create a local basic micro-environment by producing more • OH et al. While the dissociated acid sites in Al@MCM-41 with a negative charged surface favor OFX adsorption and then reaction with produced ROS . Our findings suggest that the enhanced performance of UVA-H 2 O 2 induced by suspended particles should be concerned.
研究领域:
环境科学
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化学工程
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高影响因子
Small
·
2024
·Vol. 20
·期 46
·2403360
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IF 13
Liangshutong Zhang,Yupu Zhang,Shuchang Xu,Ruowen Zhao,Wei Zhai,Jianyuan Wang
Ultraviolet A (UVA) radiation causes various irreversible damages to human skin, so the research about UVA-specific sensing device is urgent. 2D black phosphorus (BP) is used in many photosensors due to its advantages of high carrier mobility and tunable bandgap, but its application for UVA-specific photosensor is not reported. Here, a MXene-BP/Zinc oxide (ZnO) hybrid structure with lamellar-spherical interfaces like finger lime fruit is prepared by the layer-by-layer assembly (LLA) method, and p-n junctions are constructed between BP and ZnO with the Ti 3 C 2 T x electrode, showing excellent photoelectric performance. Density functional theory (DFT) calculations demonstrate that the enhanced performance is attributed to the rapid separation of photogenerated carriers in the presence of a built-in electric field at interface. Furthermore, a flexible MXene-BP/ZnO based UVA-specific photosensor is prepared, which shows a specific response to UVA as high as 7 mA W −1 and excellent mechanical stability, maintaining 98.46% response after 100 bending cycles. In particular, the integrated anti-UVA skin protection device shows excellent UVA-specific identification and wireless transmission capability, which can provide timely UVA exposure information and skin protection warning for the visually impaired. This work demonstrates a new approach for further developments of advanced photoelectric sensing technology toward improving people's skin health protection.
研究领域:
材料科学
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生物医学工程
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皮肤健康
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DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
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2021
·
IF 3.196
Yajie Wang,Xianhe Gong,Xin Dong,Yunjie Wu
In this work, arsenite (As(III)) removal in a goethite/oxalate suspension under UVA-irradiation (λ max = 365 nm) was explored under different conditions (initial pH, oxalate concentration, goethite dosage, and phosphate). SEM, EDS, FTIR, XRD and XPS were used to investigate the morphology, composition, functional groups, structure, and surface properites of goethite. The greatest efficiency of As(III) removal was 95.52% at pH 3.0, 100.0 µg·L –1 As(III), 0.05 g·L –1 goethite, and 0.5 mmol·L –1 oxalate. The removal of As(III) in the goethite/oxalate system was strongly pH-dependent. An increase in pH was accompanied by a reduction in photo-oxidation efficiency and an increase in adsorption efficiency. Addition of appropriate amounts of oxalate can enhance As(III) removal at pH 3.0 by promoting the photo-dissolution of iron oxide. However, the addition of oxalate was detrimental to As(III) removal at pH 7.0 due to its competition for photo-generated hole ( h vb + ) as well as adsorption sites. Increasing dosage from 0.0 to 0.5 g·L –1 accelerated As(III) removal at both pH 3.0 and pH 7.0. ESR, radical-scavenging, and N 2 -purging experiments showed that As(III) removal was mainly achieved by photo-oxidation at pH 3.0 and HO · appeared to be the primary oxidant for the As(III) oxidation, which was strongly dependent on HO 2 · /O 2 ·– . However, adsorption served as a major pathway and photo-oxidation played a minor role at pH 7.0. As(III) photo-oxidation was predominantly attributed to the direct reaction between As(III) and h vb + under neutral conditions. In addition, O 2 played an important role in As(III) photo-oxidation under acidic and neutral conditions. Moreover, goethite remained morphologically intact and demonstrated good reusability up to five regeneration cycles. These findings show that As(III) can be effectively removed from water containing iron oxides and carboxylic acid, which is important for the remediation of arsenic-contaminated waterbodies and wastewaters.
研究领域:
环境科学
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化学
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Lifang Lin,Jing Xu,Yihui Zhang,Yilin Chen,Lei Zhou,Shiyong Tao
The Fenton reaction is widely utilized for degrading pollutants that resist conventional wastewater treatment methods. However, its application is often limited by the requirement for strict acidic conditions. This study investigates the potential of malic acid (MA), a biosafe ligand widely used in food processing industry and battery recycling, to enhance acetaminophen (APAP) degradation in a neutral photo-Fenton system under UVA irradiation. Results revealed that MA acts as an effective complexing ligand, stabilizing Fe(III) in photoactive complexes and enhancing OH generation. Under the conditions of 100 μM Fe(III), 1.5 mM MA and 1 mM H 2 O 2 at pH 6, over 90 % APAP was degraded within 10 mins, with an initial reaction rate nine times higher than without MA. The presence of PO 4 3− did not significantly affect the final degradation efficiency of APAP, revealing the strong complexation ability of MA. Validation in natural water matrices showed high APAP removal efficiency (>70 %), and sunlight-driven tests maintained effective processing performance, demonstrating the practical applicability of the MA-photo-Fenton system in realistic remediation scenarios. These results propose a novel ligand selection strategy for ligand-mediated iron-based redox cycles, and further validate the positive contribution of carboxylates to the photo-Fenton system in a neutral environment, providing a reliable pathway for the degradation of organic pollutants in the environment.
研究领域:
环境科学
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化学工程
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水处理技术
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高级氧化工艺
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光化学
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DOI
高影响因子
DYES AND PIGMENTS
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2026
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IF 4.2
Qin Huang,Jiawei Tian,Xinyu Xie,Wenyuan Zhang,Xiaoyan Liu,Haixia Zhang
Photodegradation, particularly induced by ultraviolet radiation, is a major cause of discoloration in organic pigments, though studies on their UV aging behavior remain limited. This work investigated the effects of binder type, environmental humidity, temperature, and plaster composition on the UVA aging behavior of three representative red organic aluminum lake pigments (safflower red lake, lac lake, and alizarin lake) using colorimetry, ATR-FTIR spectroscopy, mass spectrometry (MS), and analysis of variance (ANOVA). The results demonstrated that binder type and concentration, humidity, temperature, and plaster layer composition all significantly influenced the discoloration rate of pigments under UVA-induced. High temperature, high humidity, and alkaline plaster layers accelerated UVA degradation of pigments, whereas linseed oil formed a protective film that mitigated degradation of pigments. MS analysis confirmed that external factors did not alter the characteristic pigment markers, which ensured reliable identification of these lake pigments in cultural relics. These findings provide theoretical support and practical guidance for the conservation and identification of organic aluminum lake pigments in cultural heritage, highlighting their considerable practical significance.
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高影响因子
AGING CELL
·
2024
·
IF 8
Xueling He,Chen Wang,Qianyu Zhang,Tong Yang,Qiuyan Guo,Yaxu Wang,Jiayue Guo,Pengjie Wang,Junzhe Zhang,Huan Tang,Yinhua Zhu,Jigang Wang
Cellular senescence plays a critical role in repeated ultraviolet (UV) exposure-induced skin photoaging. Currently, from the perspective of regulating senescent cells, potent compounds or reliable protein targets that could effectively prevent skin photoaging have not yet been reported. Herein, we demonstrated that chlorogenic acid (CGA) significantly inhibited UVA-induced senescence of human dermis skin fibroblasts (HDF) cells by screening the natural product library. The activity-based protein profiling (ABPP) result revealed that Enolase 1 (ENO1) is one of the direct targets of CGA in HDF cells. Further mechanism research indicated that CGA covalently binds to ENO1, and prevented UVA-induced cellular senescence by suppressing the activity of ENO1 protein to block the glycolytic pathway. Importantly, we found that CGA dose-dependently reduced the skin wrinkle score, alleviated skin pathological features and inhibited senescent characteristics in a photoaging mouse model. The proteomic analysis revealed that CGA treatment effectively inhibited senescence-associated secretory phenotype (SASP) secretion and glycolysis in skin samples of mice. Collectively, our study not only demonstrated that inhibiting cell senescence is an effective anti-skin photoaging strategy, but also revealed that ENO1 is a promising protein target to prevent photoaging.
研究领域:
药理学
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皮肤病学
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分子生物学
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细胞生物学
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PubMed
高影响因子
Materials Today Bio
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2025
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IF 10.2
Yi Liao,Shengmei Zhou,Andrew J. Quantock,Wei Li,Yuan Xu,Xie Fang,Robert D. Young,Wanling He,Qingjian Li,Houjian Zhang,Ruochen Wang,Yi Han,Hongwei Cheng,Wenjun Li,Lu Peng,Rongrong Zong,Yi Hong,Zhirong Lin,Zuguo Liu
Although cell-encapsulating hydrogels are of tremendous interest in regenerative medicine, few of them have been used in clinics and rarely used natural extracellular matrices as polymer precursors. One successful example is to use riboflavin (RF)/ultraviolet A (UVA) to cross-link corneal collagen, which has been used in clinics to halt disease progression in patients with corneal ectatic diseases. However, high-energy UVA and its action on RF cause tissue damage, particularly irreversible endothelium loss, and thus standard RF/UVA protocol may have limitations in treating patients at the advanced stage with thin cornea. Photo-initiators lithium phenyl-2,4,6-trimethylbenzoylphosphinate (LAP) has high efficiency under visible 405 nm light, and is widely applied in 3D bioprinting to cross-link synthesized monomers. Here, we introduced a new strategy to cross-link cornea using LAP and visible light (VL). The LAP/VL protocol could effectively increase corneal stiffness with equivalent efficiency to the RF/UVA protocol in both porcine and rabbit cornea. As LAP and VL were used, the loss of corneal endothelial and stromal cells was minimized, and epithelial wound healing and stromal cell repopulation were accelerated. In summary, we propose that the LAP/VL protocol is an effective and safe alternate for cornea CXL with advantages for relatively thin cornea. Our study also expands the application scope of LAP, indicating it is a suitable photocatalyst for in situ natural extracellular matrices CXL.
研究领域:
眼科学
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再生医学
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生物材料
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光生物学
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组织工程
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DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2023
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IF 5.9
Mengwen Lv,Yong Yang,Patrick Choisy,Tao Xu,Karl Pays,Ling Zhang,Jin Zhu,Qianyu Wang,Shanshan Li,Liangsheng Wang
Genus Paeonia is an important ornamental and medicinal crop . The flowers of Paeonia are rich in flavonoids , and flavonoids have excellent antioxidant and anti-inflammatory activities, which have the potential to slow down skin aging. In this study, flavonoids from whole flowers of six popular Paeonia cultivars were extracted using three different solvents. The composition and content of peony flowers flavonoids extracted with three solvents were determined by high performance liquid chromatography quadrupole time-of-flight mass spectrometry / mass spectrometry (HPLC-Q-TOF-MS/MS) and HPLC-diode array detection (DAD). A total of 26 flavonoids were isolated and identified, and 60 % ethanol showed the highest extraction efficiency. Not only flavonoids composition but also the content was significantly different in different peony flowers, among which ‘Hei Tian E’ had the most abundant composition (17 flavonoids) and the highest total content of flavonoids (57.75 mg/g DW by using 60 % ethanol). After that, the anti-skin photoaging effects of the 60 % ethanol extracts of the six Paeonia cultivars flowers were evaluated by UVR-Fulkutis and UVA-Fibroblasts photoaging models. Under exposure to UV radiation, some Paeonia flowers’ extracts can prevent the decrease of skin surface thickness and reduce the loss of Collagen IV and VII. In addition, the production and accumulation of ROS, MMP-1 and MMP-3 in fibroblasts were inhibited, indicating the attenuation of skin photoaging by the extracts. Among the six samples tested, ‘Hei Tian E’ whole flower extract (BH-HT) had the best comprehensive effect. Finally, the correlations between components and anti-photoaging efficacy were analyzed. We speculate that the anti-photoaging effect was significantly related to its richness in quercetin 3- O -di-glucoside, quercetin 3- O -glucoside, isorhamnetin 3- O -galloyl arabinoside, cyanidin 3,5-di- O -glucoside, cyanidin 3- O -glucoside, and peonidin 3- O -glucoside. In general, the results show that Paeonia flowers have potential for development of anti-photoaging herbal essence products.
研究领域:
药理学
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植物学
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化妆品科学
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分析化学
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DOI
高影响因子
Materials Science & Engineering C-Materials for Biological Applications
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2021
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IF 7.328
Nini Li,Xiaohong Ji,Bulei Wang,Yanglin Guo,Changhao Wang,Yashao Chen
Living organisms tend to evolve various naturally photoprotective mechanisms to avoid photodamage. Among them, polydopamine (PDA) is an effective sunscreen, a mimic of melanin, which is the main functional component of the photoprotective system of human skin. However, the concerns of its dark color, skin penetration and photoprotective efficiency remain yet to be solved. Herein, we have constructed melanin-inspired nanocomposite hydrogels (CS-PDA h -GP-HA) for photoprotection, in which PDA was prepared as hollow nanoparticles (PDA h NPs) and entrapped in a physically cross-linked hydrogel (CS-GP-HA) formed by chitosan (CS) and hyaluronic acid (HA) using β -glycerophosphate ( β -GP) as a modulator. The CS-PDA h -GP-HA hydrogels exhibit a shear-thinning flow behavior with an elastic modulus of 300 Pa with the gel-sol transition temperature maintained at about 37 °C simply by adjusting the β -GP content in the hydrogels. The CS-PDA h -GP-HA hydrogels also possess excellent resistance toward skin penetration. The photoprotective performances of CS-PDA h -GP-HA hydrogels were evaluated by the determination of sun protection factor (SPF) and in vitro UVA protection efficacy (UVAPE) along with UV–Vis spectroscopy. Compared with the TiO 2 nanoparticles in CS-GP-HA hydrogel, the CS-PDA h -GP-HA hydrogels show stronger shielding ability in both UVA and UVB regions. When protected by the CS-PDA h -GP-HA hydrogels, the cell viability of NIH-3T3 fibroblasts increases to 96% while it was only 14% in the case of non-protecting group. These results suggest that the CS-PDA h -GP-HA hydrogels could efficiently shield the UV irradiation and protect the skin from photodamage. This work introduces PDA-based nanocomposite hydrogels with safe, biocompatible and photoprotective properties, and provides a melanin-mimicking photoprotection system for the application in sunscreens.
研究领域:
材料科学
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生物医学工程
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纳米技术
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光生物学
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DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）