Journal of Water Process Engineering
·
2024
·
IF 6.3
Wenjie Zhu,Qiuhong Liu,Fabian Long,Penggang Li,Xiaoya Gao,Yongming Luo
The present study employed a straightforward organic-inorganic approach to synthesize spherical mesoporous polydopamine (PDA)/titanium oxide (TiO 2 ) composite material (herein represented by the generic formula of PT-x, where x is the mass of dopamine hydrochloride added) through self-assembly. The morphology, structure and optical properties of PT-x were characterized using various analytical techniques. Moreover, PDA was found to serve multiple functions, including as an adhesive, a light absorber, and an electron (e − ) transport medium. The photocatalytic performance of the synthesized material for removing Cr(VI) was evaluated under simulated sunlight. The results showed that PT-0.5 removed 99.78 % of Cr(VI) within 2.5 h, of which 57.8 % was reduced to Cr(III). After five cycles, PT-0.5 retained a Cr(VI) removal efficiency of approximately 81.76 %. It was revealed that a high concentration of semiquinone and quinone functional groups in PDA facilitated the transfer of photoinduced e − and provided adsorption sites for Cr(VI). In addition, carbon (C) atoms in PDA, belonging to sp 2 hybridized orbitals with strong conductivity, which enabled the photogeneration of e − by the semiconductor material (TiO 2 ) to be transferred to the surface of the material faster, promoted the contact between Cr(VI) and its reduction to Cr(III). The combination of these properties reduced the recombination of photoinduced e − -hole (h + ) pairs in TiO 2 , thereby enhancing the efficiency of the removal of Cr(VI).
研究领域:
环境科学
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材料科学
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DOI
高影响因子
Science China-Technological Sciences
·
2024
·Vol. 67
·期 12
·3801-3811
·
IF 4.4
Bai YiJie,Tang TianQi,He YuRong
Smart windows, capable of dynamically regulating indoor heat, offer a promising avenue for effectively reducing energy consumption. Hydrogel-based smart windows are excellent at thermal modulation and daylighting, but they are difficult to commercialize globally due to problems like winter ice formation, which can affect thermal insulation, daylighting, and structural integrity, as well as an impractical cloud point temperature ( t cp ). To solve these issues, a ternary anti-freezing system consisting of ethylene glycol (EG), glycerol, and water is proposed. With the t cp regulated at 31.6°C, the system strikes a balance between outstanding daylighting (91.89%) and solar modulation ability (78.32%). Furthermore, the system shows resilience even below −30.0°C and long-term stability, which qualifies it for use in densely populated regions even with severely cold weather. To further illustrate the distinct impacts of EG and glycerol, the optical characteristics and t cp of binary systems containing EG and water as well as glycerol and water were examined. The durability test includes severely cold temperature of −30.0°C and solar exposure temperature of 60.0°C. This work would offer insights to advance the field’s understanding of anti-freezing capability modification in smart windows and advance the development of environmentally and energy-efficiently designed buildings.
研究领域:
材料科学
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能源工程
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环境科学
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DOI
高影响因子
ACS Omega
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2022
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IF 4.132
Tianxiang Jin,Jingwei Su,Qingyun Luo,Wei Zhu,Haizhen Lai,Dejuan Huang,Chunyan Wang
Biomass-derived activated carbon is a widely used electrode material for supercapacitors. One of the keys to preparing high-performance activated carbon is the selection of appropriate precursors. Daylily is a common edible herb and is widely planted in Asia. It is rich in nitrogen and phosphorus, so it can be used as a precursor of heteroatom-doped activated carbon. Herein, a daylily-derived porous carbon with a large specific surface area and high content of heteroatoms has been successfully prepared by a simple carbonization method. The as-prepared carbon materials showed a remarkable specific capacitance of 299.1 F/g at 0.5 A/g and excellent cycling stability of 99.6% after 4000 cycles at a current density of 1 A/g. Moreover, the assembled symmetric supercapacitor showed a high energy density of 21.6 Wh/kg at a power density of 598.2 W/kg in 6 M KOH electrolyte. These results demonstrate that the daylily-derived porous carbon is an excellent material for high-performance supercapacitors.
研究领域:
材料科学
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能源存储
·
植物资源利用
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产品关联
DOI
PubMed
高影响因子
Molecular Catalysis
·
2021
·
IF 5.062
Yuanfang Shen,Liangchen Chen,Luping Zhang,Weihang Han,Min Jiang,Hui Zheng
Photocatalytic fixation of nitrogen from air at normal temperature and pressure (NTP) is a fascinating topic for sustainable development and environment. A new type of organic ligand doped cobalt-iron oxides photocatalyst was designed and prepared which can inhibit the recombination of photoelectron-hole pairs and adjust the energy gap for converting nitrogen into ammonium at NTP. Its relevant properties and characterization data was examined by XRD, SEM, HRTEM, XPS, ESR, and UV-vis. These experimental data proved its nitrogen fixation ability. The rate of nitrogen fixation could be 216 μmol•L −1 •h −1 with simulated sunlight illumination. Moreover, this nitrogen fixation activity can also happen at night with the rate of 112μmol•L −1 •h −1 . This all-day nitrogen fixation ability makes it has the industrial potential application in future.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2018
·Vol. 42
·期 14
·11796-11803
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IF 3.201
Bo Xu,Yuwei Liu,Yu Li,Lanlan Wang,Nannan Li,Min Fu,Ping Wang,Qiang Wang
Nanocomposite hydrogels (NC gels) consisting of an acrylamide (AM) and 2-methoxyethyl acrylate (MEA) copolymer and titania nanoparticles (TiO2 NPs) as both inorganic cross-linking agents and photo-initiators were synthesized. Especially, the formation of hydrogels can be realized under daylight without using any initiating systems or special treatments. The resultant NC gels displayed outstanding mechanical performance including high extensibility (elongation at break >1000%), high strength (fracture stress up to 630 kPa), high toughness (∼4.64 MJ m−3), and anti-fatigue properties due to hydrogen bonding interactions between TiO2 NPs and polymer chains. Furthermore, the hydrogels also revealed considerable mechanical strength in the swollen state because of their relatively low swelling ratios. It is hoped that this novel type of NC gels could promote current hydrogel research and broaden their practical applications.
研究领域:
材料科学
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生物医学工程
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DOI
高影响因子
DALTON TRANSACTIONS
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2021
·Vol. 50
·期 42
·15413-15421
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IF 4.39
Jingwei Liu,Yanjie Liang,Shao Yan,Dongxun Chen,Shihai Miao,Weili Wang
Luminescent materials that emit in the narrowband ultraviolet-B (NB-UVB; 310–313 nm) spectral region have attracted considerable attention due to their unique spectral features, which endow them with great potential applications in the fields of photochemistry and photomedicine. However, NB-UVB persistent luminescent materials are relatively lacking, especially materials that are excitable by natural sunlight. Here we report the NB-UVB persistent luminescence of Gd3+ in (Y,Gd)3Ga5O12:Bi3+ garnets by making use of the persistent energy transfer from Bi3+ to Gd3+. The optimal Bi3+ and Gd3+ concentrations for the maximum energy transfer efficiency are determined and persistent NB-UVB light emission with a peak wavelength at 313 nm and an afterglow time of more than 24 h is successfully achieved in the (Y,Gd)3Ga5O12:Bi3+ phosphor. More importantly, the as-synthesized NB-UVB persistent phosphors are also excitable by the widely available natural sunlight and exhibit exceptional NB-UVB persistent luminescence performance. Benefitting from the visible-blind emission feature, interference-free capability from indoor ambient light and self-sustained optical characteristic, the developed sunlight-excitable NB-UVB persistent phosphors here not only hold great promise for covert optical tagging applications, but also open new opportunities for optical data storage in a bright indoor environment.
研究领域:
材料科学
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光物理学
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生物医学工程
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光学成像
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药物递送系统
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DOI
高影响因子
ADVANCED MATERIALS
·
2023
·Vol. 36
·期 5
·2304910
·
IF 29.4
Weihao Meng,Augustinus J. J. Kragt,Yingtao Gao,Eleonora Brembilla,Xiaowen Hu,Julia S. van der Burgt,Albertus P. H. J. Schenning,Tillmann Klein,Guofu Zhou,Eric R. van den Ham,Longfei Tan,Laifeng Li,Jingxia Wang,Lei Jiang
The adaptive control of sunlight through photochromic smart windows could have a huge impact on the energy efficiency and daylight comfort in buildings. However, the fabrication of inorganic nanoparticle and polymer composite photochromic films with a high contrast ratio and high transparency/low haze remains a challenge. Here, a solution method is presented for the in situ growth of copper-doped tungsten trioxide nanoparticles in polymethyl methacrylate, which allows a low-cost preparation of photochromic films with a high luminous transparency (luminous transmittance T lum = 91%) and scalability (30 × 350 cm 2 ). High modulation of visible light (Δ T lum = 73%) and solar heat (modulation of solar transmittance Δ T sol = 73%, modulation of solar heat gain coefficient ΔSHGC = 0.5) of the film improves the indoor daylight comfort and energy efficiency. Simulation results show that low-e windows with the photochromic film applied can greatly enhance the energy efficiency and daylight comfort. This photochromic film presents an attractive strategy for achieving more energy-efficient buildings and carbon neutrality to combat global climate change.
研究领域:
材料科学
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能源效率
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建筑技术
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环境科学
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DOI
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2023
·Vol. 24
·期 8
·7061
·
IF 5.6
Jing Xin,Jing Wang,Yuanping Yao,Sijia Wang,Zhenxi Zhang,Cuiping Yao
Simulated-daylight photodynamic therapy (SD-PDT) may be an efficacious strategy for treating melanoma because it can overcome the severe stinging pain, erythema, and edema experienced during conventional PDT. However, the poor daylight response of existing common photosensitizers leads to unsatisfactory anti-tumor therapeutic effects and limits the development of daylight PDT. Hence, in this study, we utilized Ag nanoparticles to adjust the daylight response of TiO2, acquire efficient photochemical activity, and then enhance the anti-tumor therapeutic effect of SD-PDT on melanoma. The synthesized Ag-doped TiO2showed an optimal enhanced effect compared to Ag-core TiO2. Doping Ag into TiO2produced a new shallow acceptor impurity level in the energy band structure, which expanded optical absorption in the range of 400–800 nm, and finally improved the photodamage effect of TiO2under SD irradiation. Plasmonic near-field distributions were enhanced due to the high refractive index of TiO2at the Ag-TiO2interface, and then the amount of light captured by TiO2was increased to induce the enhanced SD-PDT effect of Ag-core TiO2. Hence, Ag could effectively improve the photochemical activity and SD-PDT effect of TiO2through the change in the energy band structure. Generally, Ag-doped TiO2is a promising photosensitizer agent for treating melanoma via SD-PDT.Keywords:melanoma;simulated-daylight photodynamic therapy;Ag-doped TiO2;Ag-core TiO2
研究领域:
肿瘤学
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材料科学
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光动力治疗
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产品关联
DOI
PubMed
高影响因子
Nature Sustainability
·
2023
·Vol. 6
·期 11
·1446-1454
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IF 27.6
Wu Xueke,Li Jinlei,Jiang Qinyuan,Zhang Wenshuo,Wang Baoshun,Li Run,Zhao Siming,Wang Fei,Huang Ya,Lyu Pei,Zhao Yanlong,Zhu Jia,Zhang Rufan
Radiative cooling textiles dissipate human body heat without any energy input, providing a sustainable means for personal thermal management. However, there is still a lack of textile materials to support efficient cooling in varied outdoor and indoor environments. Here we show a polyoxymethylene (POM) nanotextile design that not only achieves selective emission in the atmospheric window (8–13 μm) but also shows transmission in the remaining mid-infrared wavebands and reflection of sunlight (0.3–2.5 μm). As a result, the POM textile achieves efficient radiative human body cooling both outdoors (under sunny and cloudy conditions) and indoors (0.5–8.8 °C lower than typical textiles). Moreover, the textile design shows favourable wearability and outperforms its commercial counterparts when used as protective clothing. The POM material provides both indoor and outdoor human body cooling and introduces new possibilities in the rational design of next-generation smart textiles and other applications supporting sustainability.
研究领域:
材料科学
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热管理技术
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可持续发展
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DOI
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Shuai Zhao,Chengtuo Niu,Xiaohong Yang,Xin Xu,Feiyun Zheng,Chunfeng Liu,Jinjing Wang,Qi Li
This study aimed to elaborate the role of sunlight on chemosensory characteristics of broad bean paste (BBP). Two groups of BBP fermentation with sunlight treated (ST) or darkness treated (DT) were prepared and the volatile compounds were revealed and compared via GC–MS and GC–IMS and multivariate statistical analysis. A total of 125 compounds were identified and 24 markers with potential contribution to the BBP flavor characteristics were screened. Sunlight exposure was proposed to favor the accumulation of volatile compounds providing fruity, floral, buttery and roasted aroma during fermentation while volatile flavor compounds with unfavorable aroma were enriched in the darkness-treated group. Through KEGG-enrichment analysis, phenylalanine metabolism was found to play critical roles in regulating volatile flavor compound formation and the predicted synthesis network for 24 marker volatile flavor compounds was constructed. This study may unravel the scientific meaning of the role of sunlight on BBP chemosensory quality.
研究领域:
食品科学
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化学计量学
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代谢组学
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产品关联
DOI
PubMed
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Chenyang Guo,Haoran Chen,Jiaofeng Ye,Jingmin Ran,Libang Feng,Yanhua Liu,Jianbin Zhang,Dianming Li
The simultaneous integration of high strength, toughness, and self-healing capacity in a single material has presented significant challenges. Additionally, most self-healing systems require external stimuli like artificial light or heat to activate the repair process. This study addressed these issues by incorporating TiO 2 /CuS heterojunction nanocrystals into a dynamic oxime-urethane-based polyurethane with metal-coordination interactions. The heterojunction broadened the material's light absorption to entire-spectrum sunlight, enabling the synthesized polyurethane to achieve efficient solar-driven self-healing. The resulting polyurethane exhibited a high healing efficiency of 98.6 % under sunlight, along with outstanding mechanical properties including a tensile strength of 28.43 MPa, elongation at break of 1755 %, toughness of 261.7 MJ/m 3 , and fracture energy of 246.64 kJ/m 2 . Meanwhile, the TiO 2 /CuS heterojunction also endowed the material with strong antibacterial properties, demonstrating a 99 % antibacterial rate. This work resolved the inherent conflict between mechanical performance and self-healing efficiency through the synergistic design of heterojunction nanocrystals and dynamic bonds. It provided a new strategy for developing high-strength, tough materials with effective sunlight-responsive self-healing capabilities. The resulting material holds great potential for applications in smart coatings, flexible electronics, wearable devices.
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DOI
高影响因子
CHEMOSPHERE
·
2021
·
IF 7.086
Zimi Ye,Zhongyu Guo,Jieqiong Wang,Lilan Zhang,Yuchen Guo,Chihiro Yoshimura,Junfeng Niu
Acebutolol (ACE) has been widely used for the treatment of cardiovascular disorders, and its photochemical fate in natural waters is a matter of concern due to its ubiquitous occurrence and its toxicity to aquatic organisms. In this study, the photodegradation of ACE in river water and synthetic waters were investigated under simulated sunlight irradiation. The results demonstrated that ACE photodegradation rate in river water was 3.2 times higher than that in pure water. Then the influences of HCO 3 − , NO 3 − and DOM on ACE photolysis were investigated under their concentrations similar with the ones in river water. ACE photodegradation was significantly enhanced in the presence of HCO 3 − alone, and the scavenging experiments and the electron paramagnetic resonance experiments together proved that HCO 3 − could be oxidized by triplet-excited state of ACE to generate CO 3 •- , which subsequently played a key role in ACE degradation. The presence of both NO 3 − and DOM also increased the ACE photodegradation rates, and •OH and 3 DOM* were found to be involved in the degradation. In addition, when DOM was added to a solution with HCO 3 − , the enhancement effect of HCO 3 − on ACE photodegradation was weakened due to the scavenging of CO 3 •- by DOM combined with the light screening effect of DOM.
研究领域:
环境科学
·
化学
·
水处理
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）