COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2022
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IF 5.518
Mengnan Nie,Chao Zhou,Weiwei Feng,Changhui Xin,Xin Yu,Qian Li
Self-doped Ti 3+ -TiO 2 and amorphous ZnS layers-coated Ti 3+ -TiO 2 nanostructures were successfully fabricated for via a calcination-ultrasonic synthesis strategy for organic pollutant degradation under visible-light illumination. The experimental results revealed that the synthesized Ti 3+ -TiO 2 clusters displayed efficient visible-light absorption and photocatalytic performance. It was also found that amorphous ZnS layers were formed on the coral-like Ti 3+ -TiO 2 clusters via an ultrasonic synthesis method, and the strongly combined interfaces greatly boosted the charge separation between ZnS layers and self-doped Ti 3+ -TiO 2 clusters. The synthesized Ti 3+ -TiO 2 @ZnS-15% heterojunction presented the highest photocatalytic activity with a rate constant of 0.03197 min −1 , approximately 9.87 times of commercial TiO 2 . In addition, the prepared Ti 3+ -TiO 2 @ZnS composites also exhibited highly boosted photocatalytic performance towards ciprofloxacin and tetracycline degradation under visible-light illumination compared with those of commercial TiO 2 , Ti 3+ -TiO 2 , and ZnS samples. Finally, the norfloxacin degradation pathways and visible-light photocatalytic mechanism over nanostructured Ti 3+ -TiO 2 @ZnS heterojunctions were suggested.
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Nature Communications
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2022
·Vol. 13
·期 1
·1-9
·
IF 17.694
Wang Yunhu,Wang Kunpeng,Dai Fangxu,Zhang Kai,Tang Haifeng,Wang Lei,Xing Jun
Artificial lighting consumes almost one-fifth of global electricity. As an efficient solid-state lighting technology, white light-emitting diodes (WLEDs) have received increasing attention. However, the white luminescence of the traditional WLEDs comes from multi-component emitters, which leads to complex device structure and unstable emitting color. Therefore, developing single-component materials with white-light electroluminescence is of significance for artificial lighting applications. Here, we fabricate single-component white-light electroluminescence devices based on an aromatic carbon nitride material and improve the performance of WLEDs by adjusting the carrier transport. The carbon nitride LEDs emit warm-white light, of which color coordinates and color temperature are (0.44, 0.52) and 3700 K. The optimized LEDs display a very low turn-on voltage of 3.2 V and achieve a milestone in the maximum luminance and external quantum efficiency of 1885 cd m −2 and 1.20%. Our findings demonstrate the low-cost carbon nitride materials have promising potential for single-component WLEDs application.
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PubMed
高影响因子
Advanced Healthcare Materials
·
2022
·Vol. 12
·期 2
·2201565
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IF 11.092
Zhekun Zhang,Juning Xie,Jun Xing,Changhao Li,Tak Man Wong,Hui Yu,Yuanxing Li,Fabang Yang,Yu Tian,Huan Zhang,Wei Li,Chengyun Ning,Xiaolan Wang,Peng Yu
Developing an ideal wound dressing that not only accelerates wound healing but also eliminates potential bacterial infections remains a difficult balancing act. This work reports the design of a light-programmable sodium alginate nanocomposite hydrogel loaded with BiOCl/polypyrrole (BOC/PPy) nanosheets for state-switchable wound healing promotion and bacterial infection elimination remotely. The nanocomposite hydrogel possesses programmable photoelectric or photothermal conversion due to the expanded light absorption range, optimized electron transmission interface, promoted photo-generated charge separation, and transfer of the BOC/PPy nanosheets. Under white light irradiation state, the nanocomposite hydrogel induces human umbilical vein endothelial cells migration and angiogenesis, and accelerates the healing efficiency of mouse skin in vivo. Under near-infrared light irradiation state, the nanocomposite hydrogel presents superior antibacterial capability in vitro, and reaches an antibacterial rate of 99.1% for Staphylococcus aureus infected skin wound in vivo. This light-programmable nanocomposite hydrogel provides an on-demand resolution of biological state-switching to balance wound healing and elimination of bacterial infection.
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JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
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2026
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IF 4
Peili Lan,Yue Hu,Zijia Nan,Xuejin Li,Ziting Zhang,Xiaoying Zhang,Yuqian Jiang,Yao Tang
BACKGROUND Highland barley seedlings are rich in bioactive phytochemicals and are suitable for the development of functional beverages. Environmental conditions during seedling cultivation are critical, with light quality being an important factor regulating plant secondary metabolism, nutritional composition, and sensory quality. However, the effects of light-emitting diode (LED) light quality on the phytochemical profile, antioxidant capacity, and sensory properties of highland barley seedlings remain insufficiently understood. This study investigated effects of four light conditions – white, red, and blue LED light and darkness – on the overall quality of highland barley seedlings. RESULTS Blue light significantly increased total phenolics, flavonoids, vitamin C, and individual phenolic compounds, including chlorogenic acid and proanthocyanidin B2, and resulted in the highest 2,2-diphenyl-1-picrylhydrazyl (DPPH) and ferric reducing antioxidant power (FRAP) antioxidant activity. Red light promoted higher L * and b * values and a unique aroma, characterized by elevated levels of sulfides and terpenes as determined using an electronic nose (E-nose). Gas chromatography–mass spectrometry (GC–MS) analysis identified 34 volatile compounds, confirming these light-induced changes. White light maximized chlorophyll content, probably because of its balanced red–blue spectrum, whereas cultivation in darkness resulted in the highest free amino acid content because of altered metabolic priorities. CONCLUSION Light quality regulation can selectively affect the amino acid and chlorophyll content, color, and aroma of highland barley seedlings, with blue light being optimal for enriching bioactive compounds and improving antioxidant capacity. These findings provide a theoretical basis for light management strategies to improve the nutritional and commercial value of highland barley seedling products. © 2026 Society of Chemical Industry.
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RSC Advances
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2023
·Vol. 13
·期 49
·34576-34586
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IF 3.9
Mingyu Shang,Yanfei Wei,Herong Zhou,Tao Wu,Ke Wang,Hongxiang Chen,Beisong Fang,Yang Zhao
PEG2000 (polyethylene glycol, molecular weight: 2000) is commonly used for the dehydration and reinforcement of waterlogged wooden cultural relics, but its photo-aging degradation will seriously affect the long-term conservation of the wooden cultural relics. In this study, the photo-aging characteristics and mechanisms of PEG2000 under UV (ultraviolet) irradiations of three wavelengths were comprehensively investigated, and the surface morphology, crystal structure, and relative molecular weight of PEG2000 were systematically characterized. The results showed that PEG2000 showed a higher gloss loss rate, carbonyl index and crystallinity, and a wider molecular weight distribution with increasing aging time, especially under the irradiation of 313 nm ultraviolet light. The evolution of the PEG2000 from surface to interior during photoaging was elucidated by SEM (scanning electron microscopy) and FTIR (Fourier transform infrared spectroscopy), and it was determined that photodegradation not only occurs on the surface of PEG2000 but also gradually extends to the interior of the sample with the prolongation of irradiation time, resulting in the transformation of the basic component unit of spherical crystals in PEG2000 from fibrous crystals to spherical particles. Based on 1H-NMR (nuclear magnetic resonance spectroscopy), the photochemical reactions for the generation of degradation products were proposed, and it was found that the degradation occurred at the C–H and C–O–C bonds on the main chain, forming a large number of ester and ethoxy structures. The aging degree of PEG2000 was evaluated from the perspective of surface morphology and chemical structure by gloss and FTIR spectroscopy, and it was found that the combination of gloss loss rate and carbonyl index was more suitable to evaluate the aging degree of the sample. The relevant theoretical research will provide reliable guidance for the preservation of polyethylene glycol in waterlogged wooden cultural relics.
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高影响因子
DESALINATION
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2023
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IF 9.9
Qimeng Sun,Miao Sun,Linyan Yang,Yuan Gao,Xinghai Zhou,Lihua Lyu,Chunyan Wei
Interfacial photothermal evaporation offers a promising and cost-effective method of obtaining freshwater. Traditional photothermal evaporators , when exposed to sunlight, typically have a heating region on their surface with temperature higher than room temperature. This can lead to thermal radiation loss and reduce evaporation efficiency. Therefore, this study presents an innovative design and fabrication of a fabric-based conical roll (FCR) evaporator, which enables low-temperature evaporation without a distinct heating region and facilitates the reversal of the thermal radiation path. In particular, the FCR-7.5-45 evaporator demonstrated remarkable performance even under 2.0 sun illumination , showcasing its advanced light-harvesting capability and excellent thermal management ability attributable to the conical spiral groove structure. The unique cold evaporation surface of the 3D evaporators, combined with this design, resulted in a high evaporation efficiency of 151.53 % and a rapid evaporation rate of 3.47 kg·m −2 ·h −1 under 1.0 sun illumination. Furthermore, the freshwater produced by the FCR evaporator met the drinking water standards set by international regulatory bodies. This indicates that the photothermal evaporator developed in this project holds great potential for widespread application in desalination and sewage treatment .
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Reaction Kinetics Mechanisms and Catalysis
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2023
·
IF 1.8
Chen Zichun,Su Tongming,Luo Xuan,Qin Zuzeng,Ji Hongbing
The CuFe 2 O 4 /In 2 S 3 composite was prepared by a simple mechanical grinding process and used for the photocatalytic degradation of tetracycline (TC) under visible light irradiation. The results showed that the photocatalytic degradation activity for tetracycline on the CuFe 2 O 4 /In 2 S 3 composite photocatalyst with a mass ratio of 1:3 was 95.2%, which was higher than that of 12 and 63% on pure CuFe 2 O 4 and In 2 S 3 alone, as well as 89% on CuFe 2 O 4 /In 2 S 3 (1:1) and 79% on CuFe 2 O 4 /In 2 S 3 (3:1). Tetracycline photodegradation on CuFe 2 O 4 /In 2 S 3 was a first-order reaction, and the rate constant of the tetracycline degradation reaction under visible light irradiation was 0.02162 min −1 , which was 38 and 3.1 times higher than that of CuFe 2 O 4 and In 2 S 3 alone, respectively. This characterization results showed that CuFe 2 O 4 /In 2 S 3 (1:3) composites showed the high photodegradation efficiency and the highest photogenerated carrier separation efficiency. In addition, on the optimal reaction condition, an optimal photodegradation of 95.2% for tetracycline would achieved. The stable construction of the CuFe 2 O 4 /In 2 S 3 heterojunction and the narrow band gap of CuFe 2 O 4 or In 2 S 3 enhance the light absorption capacity of the catalyst. The mechanism study shows that CuFe 2 O 4 and In 2 S 3 are excited by visible light to produce electrons, which transfer to the conduction band of CuFe 2 O 4 and In 2 S 3 . Subsequently, the separation and transfer of photogenerated holes and photogenerated electrons are effectively improved by the Z-scheme photogenerated carrier transfer mechanism. The photogenerated electrons can reduce O 2 to produce ·O 2 − , which together with h + on the valence band becomes the main oxidation active species in the reaction system, and efficient oxidative degradation of tetracycline can be achieved.
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高影响因子
Journal of Environmental Chemical Engineering
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2023
·
IF 7.7
Yahui Zhou,Xiaohua Cheng,Zijian Duan,Xin Liu,Huiyu Yang,Bo Deng
Black TiO 2 microspheres photocatalysts with high light absorption intensity and photosensitive activity were prepared by a simple two-step method of flame-assisted combustion hydrolysis of tetrabutylorthotitanate (TBOT) and NaBH 4 reduction. The black TiO 2 microspheres photocatalysts were characterized by XRD, TEM, XPS, EELS , and UV-Vis absorption spectroscopy . The results show that the reduced TiO 2 exhibits a unique core-shell composite structure with a large number of oxygen vacancies and defects in the outer layer due to Ti 3+ , which effectively reduces the band gap of the photocatalyst. Compared with the commercial P25 catalyst, B-TiO 2 (1:7) showed higher removal of carbamazepine (CBZ) under visible light and its photocatalytic activity was 1.7 times higher than that of P25. This high photocatalytic activity is due to the efficient separation of electron-hole pairs, creating a greater number of active species. B-TiO 2 (1:7) maintained high activity after five repeated cycles and achieved 89.7 % removal of CBZ.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
·
IF 9.9
Hongying Li,Bicheng Zhu,Jian Sun,Haiming Gong,Jiaguo Yu,Liuyang Zhang
Compared to hydrogen production through pure water photocatalysis , the direct utilization of seawater for hydrogen production aligns better with the principles of sustainable development. Seawater, however, contains impurity ions like Na + and Cl − , which pose higher demands on photocatalysts . It is widely acknowledged that RuO 2 and TiO 2 demonstrate excellent stability in seawater . Consequently, this study focuses on the model system of RuO 2 -modified TiO 2 for investigating hydrogen production in simulated seawater. TiO 2 /RuO 2 nanofibers (NFs) were synthesized via a one-step electrospinning method, ensuring intimate contact between the two components. The hydrogen production activity of TiO 2 /RuO 2 NFs in simulated seawater nearly matches that in pure water. Remarkably, RuO 2 serves as an oxidation cocatalyst, effectively scavenging holes from the valence band of TiO 2 and enhancing the separation efficiency of electrons and holes. Interestingly, Cl − ions, similar to RuO 2 , contribute to reducing excess holes. This study lays the groundwork for future research into hydrogen production from seawater.
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高影响因子
Energy & Environmental Science
·
2023
·Vol. 16
·期 12
·6071-6077
·
IF 32.5
Xiaodong Li,Hui Yang,Acan Liu,Chunyan Lu,Haobo Yuan,Wenxiao Zhang,Junfeng Fang
It's a big challenge for perovskite solar cells (PSCs) to realize operational stability simultaneously under light and heat conditions according to the International Summit on Organic Photovoltaic Stability (ISOS). One key reason lies in that light-induced iodine in perovskite will escape under heat conditions, accelerating perovskite degradation and generating large Pb0 defects. Here, an iodine-trapping strategy is proposed to fabricate operationally stable PSCs through introducing an iodine trapper of β-cyclodextrin (β-CD). β-CD can trap the iodine generated in perovskite and inhibit their escape owing to its bowl structure. Besides, the trapped iodine can react with and eliminate Pb0 in perovskite films, further improving device stability. The resulting PSCs retain 91.8% of the highest efficiency under ISOS-L-1 after MPP tracking for 1000 hours at 25 °C. Importantly, PSCs with β-CD meet the requirements of the ISOS-L-2 protocol, retaining 81.2% (88.5% of initial value) of the highest efficiency after MPP tracking for 300 hours at 85 °C.
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ACS Applied Nano Materials
·
2023
·
IF 5.9
Yifang Sun,Liangliang Zhang,Ying Lv,Qinghui Zeng,Xiaoyang Guo,Wenyu Ji,Xingyuan Liu
AgIn5S8/ZnS (AIS/ZS) core/shell quantum dots (QDs) have been synthesized using a hot injection method at relatively low temperature without any protection using inert gas. The QDs were characterized with UV visible electronic absorption spectroscopy, PL spectroscopy, Fourier transform infrared (FT-IR) spectroscopy, transmission electron microscopy (TEM), and temperature-dependent time-resolved PL (TRPL). The average size of the QDs was determined to be 1.73 ± 0.29 nm. The QDs exhibit a major excitonic absorption band peaked at 479–573 nm and emission bands peaked from 548 to 666 nm with excitation at 410 nm with the peak position dependent on the synthesis temperature that affects the QD size. Upon the addition of trioctylphosphine (TOP) as a ligand, the PL quantum yield (PLQY) increased to 74.1% compared to 56.7% without TOP. The QDs show high stability after hours of ultraviolet (UV) light exposure or repetitive treatment with a significant amount of polar solvents, which is attributed to surface passivation by the ligands and ZnS shell. The luminescence mechanism of the core/shell AIS/ZS QDs is ascribed to donor–acceptor pair (DAP) recombination. TRPL results suggest that the binding energy of DAP increases and the DAP recombination probability is enhanced after passivation with TOP, leading to the high PLQY. Furthermore, prototype highly pure white light-emitting diodes (LEDs) based on these AIS/ZS QDs have been successfully demonstrated, yielding ideal 1931 CIE coordinates of (0.327, 0.335).
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高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2023
·
IF 3.4
Shuai Zheng,Lei Jiang,Fan Chang,Changqi Zhang,Ning Ma,Xueqiang Liu
This study reports the fabrication of a serious of anisotropic composite aerogels comprising polyimide and graphene (PI/G) through a simple and eco-friendly technique. Poly(amic acid) ammonium salt/graphene dispersion, which was produced through the mixture of poly(amic acid), graphene aqueous dispersion, triethylamine, and water, was utilized in the process of creating PI/G composite aerogels employing unidirectional freezing, freeze-drying, and thermal imidization. The PI/G aerogels displayed anisotropic mechanical properties, thermal insulation, and electrical conductivity. The PI/G aerogels with an anisotropic microstructure demonstrated notable rigidity and a high compressive modulus (52.7 MPa) along the axial direction, while displaying favorable flexibility and a low modulus (18.2 MPa) along the radial direction. Furthermore, the PI/G aerogel exhibited anisotropic thermal conductivity (axial: 64 mW m −1 K −1 ; radical: 55 mW m −1 K −1 ). These properties enable the PI/G aerogel to have a wider range of potential applications, especially strain sensors. The research presented herein establishes a simple and eco-friendly strategy for the production of anisotropic PI/G-based composite aerogels.
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危险品化学品经营许可证（带存储）