ChemElectroChem
·
2019
·Vol. 6
·期 14
·3648-3656
·
IF 3.975
Ruowei Yi,Xiangfei Lin,Yinchao Zhao,Chenguang Liu,Yinqing Li,Laurence J. Hardwick,Li Yang,Cezhou Zhao,Xianwei Geng,Qian Zhang
A light-weight dual-functional modified separator for lithium–sulfur batteries is prepared through a physical blend and blade-coating approach. The separator is coated with carbon black/poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) (CB/PEDOT:PSS), remarkably improving the utilization of sulfur by serving as the co-current collector. Moreover, the PEDOT:PSS effectively inhibits the diffusion of polysulfides and promotes the migration of lithium ions by providing chemical absorption and cation transport acceleration. When assembling this modified separator into the coin cell, an initial specific capacity of 1315 mAh g −1 at 0.2 C is achieved with a capacity of 956 mAh g −1 after 100 cycles, showing a superior performance compared to the cell without an interlayer. Meanwhile, the cell exhibits a rate capability with a discharge capacity of 699 mAh g −1 at a current density of 2 C. Notably, the areal density of CB/PEDOT:PSS coating is as low as 0.604 mg cm −2 , bringing a specific electrode capacity of 522 mAh g −1 at 1 C. Graphical Layer up : A dual-functional carbon black/poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) (CB/PEDOT:PSS) modified separator is fabricated. By providing effective polysulfide absorption and better current transportation, this light-weight coating brings a capacity of 956 mAh g −1 after 100 cycles at 0.2 C and a 522 mAh g −1 total cathode mass capacity at 1 C
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JOURNAL OF POLYMER SCIENCE
·
2021
·Vol. 59
·期 7
·567-577
·
IF 0
Guangdong Sun,Yi Huang,Junxiang Ma,Dapeng Li,Qinguo Fan,Yongqiang Li,Jianzhong Shao
Blue light induced free radical photopolymerization of acrylamide (AM) was studied using five bicomponent photoinitiators, camphorquinon, riboflavin-5′-phosphate sodium, curcumin, eosin Y, and Ru(bpy) 3 Cl 2 (Ru(II)) as photosensitizer, and diphenyliodonium hexafluorophosphate or potassium persulfate as electron acceptor. Fluorescence and UV–vis spectroscopies were used in combination with molecular orbital computations to characterize the photochemical behaviors of the five bicomponent photoinitiators, explore the possible electron transfer pathways of the photoinitiation processes, and quantify photopolymerization efficiencies. Real-time photogelation behavior of poly(AM) was monitored by Photo-differential scanning calorimetry and photo-rheometry. Photogelation kinetic parameters, including d G ′ (storage modulus)/d t , d G ″ (loss modulus)/dt, time delay of gelation ( t d ), and duration of gelation (Δ t gel ), were derived from photorheological data analyses and used to identify the best bicomponent photoinitiator candidate for rapid fabrication of blue light induced photopolymerizable hydrogels for biomedical applications. Graphical
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PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2015
·Vol. 17
·期 39
·26320-26329
·
IF 4.493
Meilin Lv,Yinghao Xie,Yawei Wang,Xiaoqin Sun,Fangfang Wu,Hongmei Chen,Shuwei Wang,Cai Shen,Zuofeng Chen,Shuang Ni,Gang Liu,Xiaoxiang Xu
Modification of prototype perovskite compound SrTiO3 by introducing foreign elements has been an appealing means to endow this wide band gap semiconductor with visible light responses. Here we systematically investigated a series of Sr1−xBixTi1−xCrxO3 solid solution compounds prepared by two different synthetic routes, namely, solid state reactions and the hydrothermal method. Their crystal structures as well as other physicochemical properties were explored. Our results showed that a number of important factors such as microstructures, crystallinity, light absorbance and surface compositions etc. are all strongly correlated with the synthetic methods used. The hydrothermal method is generally helpful for morphology controls as well as avoiding Cr6+ defects and Sr segregation at the surface, thereby contributing to a high photocatalytic activity. Better performance normally occurs in samples with a high crystallinity and free of defects like Bi5+. Theoretical calculations suggest that Cr plays an important role in band gap reduction and photocatalytic reactions, while Bi only acts as a constituent cation for the perovskite structure and does not significantly alter the electronic structures near the Fermi level. Our findings have revealed how synthetic routes are relevant to the final photocatalytic properties of a compound, and therefore comparisons among various photocatalysts have to include concerns about their preparation history.
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DYES AND PIGMENTS
·
2018
·
IF 3.767
Zhitian Liu,Cheng Fang,Xiang Cai,Xiang Gao,Pengcheng Li,Qi Zhang,Guoli Tu
Two conjugated polymers using 5,6-dialkoxy benzothiadiazole derivatives as the dopant were synthesized and studied as electroluminescent materials. These two polymers were well characterized by 1 H NMR , UV–Vis absorption spectrum , gel permeation chromatography , fluorescent spectrum and cyclic voltammetry . The electron mobility and electroluminescent properties were also investigated. The highest external quantum efficiency and luminous efficiency were improved by two orders of magnitude facilely via incorporating benzothiadiazole unit in the main chain.
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OPTICAL MATERIALS
·
2023
·
IF 3.9
Cheng Zuo,Xishi Tai,Qian Su,Zaiyong Jiang,Qingjie Guo
In the field of photocatalysis , the loaded photocatalyst possesses the advantages of controllable morphology, uniform preparation, low cost, and easy recovery. It can effectively avoid the secondary pollution caused by the powder catalyst and is considered a potential substitute for the powder photocatalyst. In this work, TiO 2 and Cu 7 S 4 hybrid materials with oxygen vacancies (OV) grown in situ on copper mesh (CM) were prepared by anion exchange and hydrothermal reaction . The characterization results showed that the concentration of oxygen vacancies in TiO 2 increased significantly after calcination . Under the simulated visible light , the liquid film reaction was adopted. The yield of NH 3 synthesized by OV–TiO 2 @Cu 7 S 4 /CM photocatalyst was 133.42 μmol cm −2 h −1 , 5.2 and 2.2 times that of pure TiO 2 and Cu 7 S 4 , respectively. The enhanced photocatalytic performance is attributed to the synergistic effect between the interfacial electric field of the S-scheme heterostructure and the abundant oxygen vacancies , which induces the efficient separation and migration of carriers. The cycle experiment showed that OV–TiO 2 @Cu 7 S 4 /CM heterojunction has excellent stability in photocatalytic nitrogen fixation . This work provides insight into the design of S-scheme photocatalysts with rich surface defects for green and efficient reduction of N 2 .
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FLUID PHASE EQUILIBRIA
·
2016
·
IF 1.846
Maogang He,Xiong Zheng,Ying Zhang,Yutian Chen
Fatty acid ethyl esters are the main components of biodiesels , the increasing use of biodiesels requires the study of thermophysical properties . This paper measured the speed of sound and the thermal diffusivity in liquid ethyl heptanoate from 293.15 K to 483.15 K and up to 10 MPa using light scattering method. The relative expanded uncertainties in the speed of sound and the thermal diffusivity are estimated to be less than 0.5% and 3.0% with coverage factor of k equaling 2. The data were also fitted into polynomials. For the speed of sound, the AADs between the experimental and calculated values are 0.21% in saturated liquid and 0.21% in compressed liquid. For the thermal diffusivity , the AADs are 0.46% in saturated liquid and 0.40% in compressed liquid. The temperature and pressure influence on the speed of sound and the thermal diffusivity were also analyzed.
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CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Yu Liu,Haoting Niu,Wei Gu,Xiaoyu Cai,Baodong Mao,Di Li,Weidong Shi
Exploration of highly active and noble-metal-free photocatalysts for high-efficiency photocatalytic water splitting is of great importance. Herein, a facile and effective in-situ hydrothermal method has been developed for preparation of CdS/MoS 2 heterostructures with a unique hollow microbox morphology for visible-light-driven water splitting into H 2 . The influence of MoS 2 is systematically investigated in terms of optical properties and photocatalytic activity of the CdS/MoS 2 microboxes by varying the concentration of sodium molybdate. Under visible-light irradiation (λ ≥ 420 nm), the CdS/MoS 2 microboxes exhibit superior photocatalytic H 2 evolution activity (1.36 mmol/g/h) compared to pure CdS microboxes (0.04 mmol/g/h), corresponding to an apparent quantum yield of 14.5% at 420 nm. Photocatalytic mechanism study proves that the MoS 2 nanosheets can serve as a co-catalyst and electron acceptor, for the effective promotion of electron transfer and separation of photogenerated charge carriers from CdS to further stimulate the surface H 2 evolution kinetics. Furthermore, the well-defined interior voids, low density and shell permeability of the hierarchical CdS/MoS 2 microboxes also contribute to the improvement of the photocatalytic performance.
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Nature Communications
·
2026
·
IF 18.1
Xi Lin,Chen Kezhou,Zhang Shuai,Wang Taibin,Liu Tiegen,Albinsson Bo,Hou Lili
Precise and reversible photoluminescence switching is highly attractive for optical memory, bioimaging, and smart displays. However, achieving broadband photoluminescence modulation through a simple and general strategy remains challenging, while the ultraviolet light requirement of most molecular photoswitches limits practical applications. Here, we achieve all-visible-light activated reversible photoluminescence modulation of quantum dots across an ultrawide spectral range of nearly 500 nm from blue to near-infrared region using diarylethene photoswitches. In the ring-open form of diarylethenes, quantum dots emitting blue, green, red, white and near-infrared light remain in the photoluminescence on-state. Under 405 nm irradiation, diarylethenes undergo ring-closure through triplet sensitization by CdS quantum dots, resulting in significant photoluminescence quenching to the off-state, with the maximum efficiency of 99.6% and an on/off ratio up to 250. Green-light irradiation reverses the diarylethenes back to the ring-open form, fully restoring the photoluminescence on-state. Our approach further enables reversible multi-level data storage and near-infrared anti-counterfeiting, highlighting the potential for smart light-responsive materials and optoelectronic devices.
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CERAMICS INTERNATIONAL
·
2026
·
IF 6
Yaxiang Sun,Peipei Wang,Weikai Shi,Xin Lan,Yanju Liu,Jinsong Leng
BaTiO 3 ceramics fabricated by conventional methods have been the primary focus of previous investigations. In contrast, the effects of different sintering aids on DLP-fabricated BaTiO 3 ceramics were systematically investigated over a wide sintering-temperature range. A DLP fabrication route incorporating sintering aids was employed to overcome the limitations of conventional fabrication in producing complex-structured lead-free piezoelectric ceramics with tailored properties. BaTiO 3 ceramics were fabricated using a high-solid-loading photosensitive slurry (85 wt%). Four independent compositions were prepared, each containing a single sintering aid (CuO, SiO 2 , TEOS, or Li 2 CO 3 ). The printed samples were subsequently sintered at temperatures ranging from 1375 to 1475 °C to establish clear processing–structure–property relationships. The results show that all sintering aids significantly influence densification behavior, microstructural evolution, and functional properties. Among them, TEOS-containing ceramics exhibit the most balanced overall performance, with optimal properties achieved within 1425–1450 °C. The sample sintered at 1425 °C shows the highest relative density (0.941) and dielectric constant (1904), while the maximum piezoelectric coefficient (d 33 = 234 pC/N) is obtained at 1450 °C. CuO addition leads to the highest piezoelectric response (d 33 = 258.7 pC/N), but is accompanied by abnormal grain growth and reduced microstructural stability. In contrast, SiO 2 - and Li 2 CO 3 -containing samples exhibit comparatively lower overall performance due to less effective densification and microstructural development. Overall, a systematic comparative framework was established for evaluating the effects of different sintering aids on DLP-fabricated BaTiO 3 ceramics. The combination of sintering-aid engineering and additive manufacturing offers an effective route for optimizing the microstructure and multifunctional performance of lead-free piezoelectric ceramics for energy harvesting and sensing applications.
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Horticulturae
·
2026
·Vol. 12
·期 7
·866
·
IF 3.4
Yanru Yu,Xuena Yu,Hongyu Chen,Zhongrong Guan,Wenping Li,Pingping Shi,Huanhuan Huang,Bo Sun,Zhi Huang
HighlightsWhat are the main findings?Red, white, and blue light differentially regulated growth, pigments accumulation, and antioxidant compounds and glucosinolates in mustard sprouts, respectively.Combined with sodium selenite, SeR showed the greatest gains in growth, SeW attained the highest total glucosinolates content, and SeB the highest antioxidant capacity.What are the implications of the main findings?Targeted combinations of light quality and exogenous selenium can selectively enhance the yield or nutritional quality of mustard sprouts in controlled-environment production.Phenylpropanoid biosynthesis and linoleic acid metabolism are key pathways underlying the combined effects of light and selenium on health-promoting compounds.Mustard (Brassica juncea) sprouts are appreciated for their high levels of bioactive constituents, but how light quality and exogenous selenium interactively regulate their growth and nutritional properties is still poorly understood. In this study, we evaluated the individual and combined effects of red (R), white (W) and blue (B) light together with 100 μmol·L−1selenium solution (SeR, SeW, SeB) on sprouts growth, health-promoting compounds, and metabolic profiles. Under single light quality treatments, red light favored growth, white light promoted photosynthetic pigment accumulation, and blue light most effectively enhanced antioxidant compounds and glucosinolates. Combined treatments further improved both yield and quality. SeR showed the greatest gains in growth indices; SeW achieved the highest total chlorophyll, total carotenoids, and total glucosinolates (the latter reaching 108.18 μmol g−1DW), and SeB attained the highest total selenium, soluble sugar, soluble protein, anthocyanins, ascorbic acid, flavonoids, total phenolics, and antioxidant capacity. Non-targeted metabolomics identified 1208 differential metabolites, with KEGG enrichment revealing that the phenylpropanoid biosynthesis pathway was significantly enriched across all selenium-treated groups. These findings demonstrate that targeted combinations of light quality and exogenous selenium can selectively enhance the growth or nutritional quality of mustard sprouts, offering practical guidance for their controlled-environment production.
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Advanced Materials Technologies
·
2026
·
IF 6
Ying Chu,Liang Chen,Chen Yu,Yuan Xie,Jia Jia,Aifei Wang,Tianshi Qin
Cuprous (Cu(I)) halide clusters have garnered significant attention for light-emitting devices (LEDs) due to their high photoluminescence quantum yields and broadband emission, both originating from self-trapped excitons. However, their practical implementation is impeded by poor solution processability and challenges in fabricating high-quality films. Herein, we report a facile, scalable mechanochemical synthesis of highly luminescent Cu(I) halide clusters via direct ball milling under ambient conditions. Notably, the incorporation of sodium iodide enhances the dispersibility and solution processability of these clusters without deteriorating their emission properties, enabling the preparation of stable colloidal dispersions and the one-step solution deposition of smooth, uniform films. The resultant electroluminescent devices achieve a peak external quantum efficiency of 5.9% and exhibit uniform yellow emission over a large area of 5 × 5 cm 2 . Through judicious selection of charge-transport layers, we further demonstrate broadband white electroluminescence with voltage-tunable color temperature. Our strategy provides a practical pathway to efficient, scalable, and low-toxicity Cu(I) halide cluster LEDs, while offering key design principles for developing high-performance solution-processable emissive materials in next-generation solid-state lighting.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 19
·1512
·
IF 3.2
Jiang Chaojin,Zhang Yuanyuan,Guan Erbu,Jiang Yuqin,Li Shuaishuai,Xin Yanmei
The development of efficient and economical photocatalysts is the focus of achieving sustainable remediation of water pollution. However, slow photogenerated carrier transfer and insufficient catalytic sites are the main reasons affecting photocatalytic applications. Herein, we developed flake-octahedral BiOBr/MIL-101(Fe) heterojunction catalysts through a facile solvothermal strategy for the degradation of pollutants under visible light irradiation. Scanning electron microscope, X-ray photoelectron spectrometer, Fourier infrared spectrometer, and X-ray diffraction analysis characterizations proved the successful synthesis of flake-octahedral BiOBr/MIL-101(Fe) heterojunction. Absorption spectra and Brunauer–Emmett–Teller analyses showed that the BiOBr/MIL-101(Fe) composites with an atomic percentage of Fe of 9.1 (denoted as BiOBr/MIL III ) had the optimal light absorption and the largest specific surface area. The BiOBr/MIL III achieved a remarkable Rhodamine B (Rh B) degradation efficiency of 94.5% within 60 min, with an apparent rate constant ( k ) of 0.03540 min −1 , demonstrating excellent visible light-driven photocatalytic activity. Photocatalytic mechanistic studies showed that the solvothermal-induced flake-octahedral BiOBr/MIL-101(Fe) III heterojunction promotes the formation of Z-scheme, which significantly enhances the carrier separation efficiency and accelerates the rapid generation of reactive radicals · O 2 − and h + . This work provides a feasible strategy for the construction of flake-octahedral inorganic-MIL photocatalysts with excellent photocatalytic performance.
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