FOOD CHEMISTRY
·
2020
·
IF 6.306
Mengzhen Ding,Lijie Liu,Ting Zhang,Ningping Tao,Xichang Wang,Jian Zhong
The purpose of this study is to investigate the effects of the interfacial layer number on the storage stability and in vitro digestion of fish oil-loaded primary, secondary, tertiary, and quaternary multilayer emulsions stabilized by gelatin particle and polysaccharides (anionic alginate and cationic chitosan), prepared using a layer-by-layer electrostatic deposition technique. The results demonstrate that the emulsion creaming stability during the storage process and the emulsion droplet stability against the gastric phase are dependent on the interfacial layer number. But, the interfacial layer number in the multilayer emulsions has no obvious effects on the droplet stability against droplet coalescence during the storage process and against the small intestinal phases of gastrointestinal tract models. Moreover, it also has no obvious effect on the sustained free fatty acid release of multilayer emulsions. This study can advance the fundamental understanding of multilayer emulsions and promote their potential applications.
研究领域:
食品科学
·
生物医学工程
✓ 已验证
DOI
PubMed
高影响因子
Science Advances
·
2025
·Vol. 11
·期 7
·
IF 12.5
Ligang Wang,Zher Ying Ooi,Feng-Yan Jia,Yuqi Sun,Yun Liu,Linjie Dai,Junzhi Ye,Jincan Zhang,Hio-Ieng Un,Yu-Hsien Chiang,Sanyang Han,Alessandro James Mirabelli,Miguel Anaya,Zhilong Zhang,Yang Lu,Chen Zou,Baodan Zhao,Dawei Di,Xiaodong Yang,Dengyang Guo,Yu Tan,Hao Dong,Shaocheng Liu,Tianjun Liu,Huanping Zhou,Samuel D. Stranks,Ling-Dong Sun,Chun-Hua Yan,Richard H. Friend
Colloidal quantum dots (QDs) have illuminated computer monitors and television screens due to their fascinating color-tunable properties depending on the size. Here, the electroluminescence (EL) wavelength of perovskite LEDs was tuned via the atomic layer number (ALN) of nanoplates (NPs) instead of the “size” in conventional QDs. We demonstrated efficient LEDs with controllably tailored emission from n = 3, 4, 5, and ≥7 ALN perovskite NPs with specific and discrete major peaks at 607, 638, 669, and 728 nanometers. These LEDs demonstrated peak external quantum efficiency (EQE) of 26.8% and high wavelength reproducibility with less than 1 to 2 nm difference between batches. High color stability without observable EL spectral change and operating stability with the best T50 of 267 minutes at 1.0 milliampere per square centimeter was also achieved. This work demonstrates a concept of tailoring specific ALN emission with fixed wavelengths, shedding light on efficient, emission-discrete, and color-stable LEDs for next-generation display.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2019
·
IF 0
Fei Luo,Dongya Wang,Jindong Zhang,Xiaona Li,Dongmei Liu,Hai Li,Min Lu,Xiaoji Xie,Ling Huang,Wei Huang
Preparing few-layer black phosphorus flakes, in a scalable, fast, and benign way, is a key step to promote both the fundamental research and practical applications of black phosphorus. Although the electrochemically assisted liquid exfoliation of bulk black phosphorus is a promising strategy, it is still challenging to obtain few-layer black phosphorus flakes in polar protic solvent through cathodic exfoliation. In this work, we demonstrate an ultrafast approach to exfoliate bulk black phosphorus, under a cathodic potential, in an aqueous solution of hexadecyltrimethylammonium chloride. Particularly, the exfoliation can be trigged within ∼20 s, and the obtained flakes exhibit satisfactory quality. Further detailed mechanical explorations reveal that the cathodic intercalation of hexadecyltrimethylammonium cations and their subsequent decomposition contribute to the ultrafast expansion and exfoliation of bulk black phosphorus crystals. In addition, the as-exfoliated flakes show improved stability due to the protection of hexadecyltrimethylammonium chloride. This exfoliation method, together with the findings, should shed light on the development of new exfoliation methods for preparing few-layer black phosphorus flakes in various liquid systems, thus facilitating the future applications of black phosphorus.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Jian Wang,Zhengchen Wu,Chendi Yang,Guanyu Chen,Mingyue Yuan,Bangxin Li,Yuxiang Lai,Renchao Che
Atomic-level surface design of 2D materials, which benefits from their ultra-high occupancy of surface atoms, has demonstrated significant potential for regulating electronic states. Despite efforts to explore heterojunctions on 2D surfaces, the stacking-dominated surface electronic structures and their influences on dielectric polarization remain unclear. Herein, a confined growth strategy is proposed to accurately adjust the surface atom occupancy of MoS 2 nanoflakes and thereby boost the polarization-dominated microwave absorption (MA). By altering the stacking layer number from single layers to tens of layers of MoS 2 , the charge transfer from graphite substrate to MoS 2 surface atoms, accompanied by the formation of local electric fields, reaches its highest intensity at two layers and then degrades dramatically with thicker MoS 2 nanoflakes. The strengthened dielectric properties eventually enhance the MA performance, increasing the maximum absorption intensity (41.9 dB) by 346% and the effective absorption bandwidth (3 GHz) by 750%. These discoveries shed new light on the electronic modification of 2D materials and their electromagnetic functionalization.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2023
·
IF 17.1
Chuan Tang,Yilong Jiang,Lei Chen,Junhui Sun,Yangqin Liu,Pengfei Shi,Jose Yesid Aguilar-Hurtado,Andreas Rosenkranz,Linmao Qian
The mechanical performance and surface friction of graphene oxide (GO) were found to inversely depend on the number of layers. Here, we demonstrate the non-monotonic layer-dependence of the nanowear resistance of GO nanosheets deposited on a native silicon oxide substrate. As the thickness of GO increases from ∼0.9 nm to ∼14.5 nm, the nanowear resistance initially demonstrated a decreasing and then an increasing tendency with a critical number of layers of 4 (∼3.6 nm in thickness). This experimental tendency corresponds to a change of the underlying wear mode from the overall removal to progressive layer-by-layer removal. The phenomenon of overall removal disappeared as GO was deposited on an H-DLC substrate with a low surface energy, while the nanowear resistance of thicker GO layers was always higher. Combined with density functional theory calculations, the wear resistance of few-layer GO was found to correlate with the substrate’s surface energy. This can be traced back to substrate-dependent adhesive strengths of GO, which correlated with the GO thickness originating from differences in the interfacial charge transfer. Our study proposes a strategy to improve the antiwear properties of 2D layered materials by tuning their own thickness and/or the interfacial interaction with the underlying substrate.
研究领域:
材料科学
·
物理学
·
表面科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
TALANTA
·
2024
·
IF 5.6
Heng Su,Chuanfang Liu,Huajun Xu,He Qiao,Meng Xiao,Zhenxuan Zhao,Yu Gao,Hengnan Liang
Humidity-responsive actuators (HRA) have garnered significant interest across various domains. Since 2020, MXene have been extensively studied for their potential in HRA, demonstrating remarkable performance. Thus far, more than 70 MXene materials have been found. However, no systematic research regarding the distinctions in their applications in the field of HRA has been carried out, limiting the exploration of their broader potential. Herein, a systematic investigation of the HRA performance within the MXene (Nb 2 CT x , V 2 CT x , Ti 3 C 2 T x , and Nb 4 C 3 T x ) family has been conducted. The influences of atomic layer number, oxygen content, transition metal elements, film thickness, and moisture gradient on the actuation performance are thoroughly examined. It is demonstrated that the number of atomic layers plays an indispensably critical role in both the bending angle and the response/recovery time. Nb 2 CT x and V 2 CT x with fewer atomic layers show excellent performance. At 50% relative humidity, their maximum bending angles reach 210° and 202° respectively. The HRA are exemplified by the creation of a bionic butterfly and an intelligent switch, showcasing its broad application potential.
研究领域:
材料科学
·
生物仿生学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Coatings
·
2023
·Vol. 13
·期 7
·1212
·
IF 3.4
Xuefei Chen,Lubing Zha,Fangmeng Zeng,Jie Meng,Tiandi Pan,Jindan Lv
Considering photocatalytic degradation technology has recently attracted great attention for dyeing wastewater treatment, the polyacrylonitrile (PAN) nanofibrous membrane coated with the TA/FeIIIcomplexes was proposed as a novel photocatalyst in this work. The successful self-assembly of TA/FeIIIcomplexes on the PAN nanofibrous membrane after layer-by-layer deposition of TA and FeIIIwas confirmed by the analyses of chemical structure, morphology, and hydrophilicity. With the number of coating cycles, more TA/FeIIIcomplexes coated on the PAN nanofibrous membrane, which contributed to the excellent photocatalytic activity. Whereas, when the coating cycles reached seven, the photocatalytic performance of the modified PAN nanofibrous membrane deteriorated due to the serious aggregation of TA/FeIIIcomplexes. Under optimum five coating cycles, owing to its great light absorbance capability, the modified PAN nanofibrous membrane achieved 98% degradation efficiency of RhB after 360 min illumination. This work would offer a promising high-performance photocatalyst for dyeing wastewater treatment.Keywords:photocatalysis;PAN nanofibrous membrane;TA/FeIIIcomplexes;coating cycle
研究领域:
环境科学
·
材料科学
·
废水处理
✓ 已验证
产品关联
DOI
高影响因子
CHINESE SCIENCE BULLETIN
·
2013
·Vol. 58
·期 22
·2728-2732
·
IF 1.319
Chen DiDi,Feng Xiao,Gu ShangZhi,Tong Bin,Shi JianBing,Zhi JunGe,Dong YuPing
Tetraphenylethylene (TPE) derivatives have been proved to be typical aggregation-induced emission (AIE) luminogens when they were aggregated in the free three-dimensional space. In order to reveal the effect of the dimensional degree on AIE property of TPEs, we utilized tetra(4-hydroxyphenyl)ethylene (TPE-4OH) and 1,4-benzenediamine diazonium salt (BD) to fabricate the ultra-thin films (TPE-4OH/BD LBL SA film) through layer-by-layer self-assembled technique. The interaction between TPE-4OH and BD in the films was converted from electrostatic force and hydrogen-bond to covalent bonds through photodecomposition of diazonium groups under UV irradiation. Fluorescence emission spectroscopy, UV-Vis absorption spectroscopy and atomic force microscope were carried out to evaluate the relationship between bilayer number and photoluminescence of the TPE-based self-assembled films. The experimental results showed that the TPE-based film with three bilayers only displayed AIE character, whereas the fluorescence of the film became randomly changed if the bilayer number was above three. It is supposed that the fluorescence property of the TPE-4OH/BD LBL SA film with limited molecular length in z -axis and infinite aggregation space in x - and y -axis is dominated by two competitive effects, one is the partial restriction of intramolecular rotation through short intermolecular interactions in cross-linked structure of TPE-4OH/BD, and the other is deactivation of its excited state through unrestricted intramolecular rotations or π-π interactions.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
Desalination and Water Treatment
·
2024
·
IF 1
Meng Du,Yicheng Cao,Yilin Li,Peng Zhang,Yi Wei,Xueli Gao,Bo Wang
The chemical and physical properties of graphene oxide (GO) would affect the performance of thin-film nanocomposite (TFN) membrane. In this study, the effects of size and layer number of GO on TFN membranes were studied. The larger the size of nanosheets, the more obvious the modification effect on the surface morphology of the TFN membrane, and the better the chlorine resistance of the TFN membrane. As the size of GO becomes smaller, the rejection and flux of TFN membrane are better. The decrease of GO’ size could eliminate the phenomenon of flux perk and reduce the decrease of rejection of TFN membranes. And also, because of fewer defects and more lamellar channels, TFN membrane modified with multilayered GO has a higher rejection than GO-TFN membrane when the flux is similar. These results will be helpful to understand the separation mechanism of GO-TFN membrane and optimize the structure of functional layer.
研究领域:
材料科学
·
膜分离技术
·
化学工程
✓ 已验证
DOI
高影响因子
Advanced Optical Materials
·
2024
·
IF 8
Zhen-Dong Lian,Bo Wang,Zhi-Sheng Wu,Hao Lin,Ting Ding,Jin-Xiao Wang,Liang-Xing Zhang,Jin-Cheng Xu,Peng Xiao,Hua Xu,Shuang-Peng Wang,Kar Wei Ng
CsPbBr 3 nanoplates (NPs) have shown great potential in diverse optoelectronic applications. Despite the wonderful luminescence properties, the inherent instability of these NPs hinders their use in practical situations. Herein, a facile water-assisted strategy is reported to synthesize highly stable blue emission CsPbBr 3 NPs encapsulated in PbBr(OH). The introduction of water directly into the reaction mixture is pivotal, as it triggers the transformation of bulk CsPbBr 3 nanocubes into 2-D CsPbBr 3 NPs within the PbBr(OH) matrix, resulting in the formation of CsPbBr 3 @PbBr(OH) microbricks. Remarkably, the water content in the reaction mixture allows the control of the number of perovskite layers in the NPs, thus enabling the emission color to be tuned from deep blue to green. The unconventional approach presented herein not only offers a cost-effective pathway to synthesize blue-emitting perovskites which are highly stable in a wide variety of polar and non-polar solvents, but also holds immense potential for propelling the advancement of high-performance LEDs and other optoelectronic devices. The findings underscore the significance of water in dictating the growth dynamics and emission characteristics of perovskite NPs, paving the way for their practical application.
研究领域:
材料科学
·
纳米技术
·
光电子学
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Chemistry
·
2023
·
IF 7.3
W. He,M.M. Jiang,J.X. Yu,W. Yan,X.Y. Zhang,R. Jiang,H.F. Zhao,Y. Liu,F. Feng,Q.F. Zhang,C.S. Lu,X.N. Li
In recent years, novel carbon-layer encapsulation strategies have been emerging for the construction of heterogeneous catalysts. However, the mechanism action of thermos-catalytic systems is still unclear. The synergistic effect of metal particle size and carbon layer quantity on catalytic performance has not been reported. The strategy to control the carbon layer quantity and metal particle size is still a big challenge. Here, we proposed a novel idea to design catalysts connecting the performance and the structure via work function. The direct pyrolysis of organometallic coordination polymer is induced to control the carbon layer quantity and metal particle size of the carbon-encapsulated catalyst. The results show that the reduction in the nickel nanoparticle size and the carbon layer quantity were favorable for pumping electrons from the nickel core. There was a corresponding relationship between the work function of the catalyst and its selective hydrogenation performance of halogenated aromatic nitro compounds. With low carbon-halogen bond dissociation energy, a high work function decreased catalytic selectivity. Therefore, the work function can be served as a bridge connecting to the configurational relationship of catalysts.
研究领域:
催化
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CATALYSIS
·
2021
·
IF 7.92
Jia-Xin He,Yong-Shan Xiao,Chang Liu,Min-Li Zhu,Yong-Hong Song,Zhong-Wen Liu
MoS 2 is an attractive sulfur-resistant catalyst for directly converting sulfur-containing syngas to high value-added chemicals. However, the effect of the layered structure on the catalytic activity for CO hydrogenation reactions is far from clear. Herein, MoS 2 /carbon composite catalysts with 1–8 stacking layers in MoS 2 crystallites are synthesized, and the impact of the layer numbers on the catalytic performance is probed for the low-temperature methanation of sulfur-containing syngas. The results indicate that the turnover frequency of CO methanation increases from 2.4 × 10 -3 to 3.7 × 10 -3 s −1 with decreasing layer numbers of MoS 2 crystallites from 8.3 to 1.1. This result is thoroughly explained by the fact that the higher ratio of rim sites in MoS 2 crystallites with fewer layer numbers enhances the catalytic activity, which originates from the facilitated activation of CO and H 2 . These understandings are important for the rational design and development of more efficient MoS 2 -based catalysts for CO hydrogenation.
研究领域:
催化
·
材料科学
·
化学工程
·
表面化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）