SEPARATION AND PURIFICATION TECHNOLOGY
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2022
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IF 9.136
Longkai Pan,Minggang Zhang,Hui Mei,Li Yao,Zhipeng Jin,Hongxia Liu,Shixiang Zhou,Ziyi Yao,Gangqiang Zhu,Laifei Cheng,Litong Zhang
Use of 3D photocatalytic reactor has been widely explored for development of efficient photocatalytic systems. In the present study, a bionic palisade cells BiOBr/Sr 2 Nb 2 O 7 /Al 6 Si 2 O 13 photocatalytic reactor with high strength was prepared through combination of 3D printing technology and solvothermal method. The carefully designed and optimized bionic palisade cell structure exhibited a periodic porous structure with high surface area. The controllable periodic structure effectively regulated the internal photon transfer and mass transfer. Photon transfer ensured that light is fully scattered within the structure, which improved light utilization. High mass transfer ensured smooth flow of reactant inside the structure, which increased reactant adsorption on the surface of photocatalysts. The interface electric field of the BiOBr/Sr 2 Nb 2 O 7 p-n heterojunction effectively separated the photogenerated electrons and holes. The BOB/SNO/ASO structure had high photocatalytic CO 2 reduction performance under the simulated sunlight. The CO yield for the reaction was 13.68 μmol/g/h, whereas that of CH 4 yield was 6.37 μmol/g/h. Therefore, the findings of the present study provide a basis for design and preparation of high-performance 3D photocatalytic reactors.
研究领域:
材料科学
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环境科学
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化学工程
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光催化
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DOI
高影响因子
ACS Applied Materials & Interfaces
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2022
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IF 10.383
Jian Kong,Kaixiang Liang,Wenying Shi,Chao Lu
Solution-processed polycrystalline perovskites (PVKs) have aroused tremendous interest in the optoelectronic device field. However, the inherent high-density defects in the polycrystalline hindered achieving efficient and stable large-area PVK solar cells (PSCs). Although organic molecules are already employed to passivate PVK defects, they are insulating by nature, limiting the carrier transport. Here, we design an assembly of a small molecule (N,N′-di(propanoic acid)-perylene-3,4,9,10-tetracarboxylic diamide, PDI) via confinement-assisted supramolecular polymerization technology, which is used as a binder for grain boundaries to simultaneously passivate defects and promote carrier transport. The synergistic effect allows the efficiency of all-air processed carbon-based PSCs to reach a decent power conversion efficiency of 14.17%. Importantly, the as-prepared supramolecular assembly completely breaks through the insulating nature of the single molecule, which exists in the long-term defect passivation of PSCs by organic molecules. It is expected that this finding may provide novel design ideas to apply the assemblies to improve the performance of PSCs.
研究领域:
材料科学
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化学
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光子学
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太阳能
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DOI
高影响因子
Small Methods
·
2023
·Vol. 7
·期 10
·2300394
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IF 12.4
Yuhao Geng,Haoyang Hu,Yongqi Jia,Xintong Huang,Tian Yang,Runzhe Liang,Zhuo Chen,Zhihong Yuan,Jianhong Xu
Lead halide perovskite nanocrystals (LHP NCs) have the characteristics of fast reaction kinetics and crystal instability due to the intrinsically highly ionic bonding between the respective ions, which bring challenges for revealing the growth kinetics and practical applications. Compared with conventional batch synthesis methods, the single-function microreactor can achieve precise and stable control of the NCs synthesis process, but it still has the shortcoming of not being able to obtain information about the growth process. In this study, a micro Total Reaction System (μTRS) with remote control, online detection, and rapid data analysis functions is designed. μTRS can sample the photoluminescence information of CsPbBr 3 NCs growth in ligand-assisted reprecipitation method. CsPbBr 3 NCs with an emission range of 435–492 nm are successfully detected, which breaks the record of the smallest size of CsPbBr 3 NCs synthesized directly from precursors. The real-time feature of μTRS enables the construction of an automated close-loop synthesis system. Besides, the rapid acquisition and timely processing of product information enable the rapid mapping of the operation space for CsPbBr 3 NCs preparation, which provides a reliable and learnable data set for designing a fully autonomous microreaction system capable of synthesizing NCs.
研究领域:
材料科学
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化学工程
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纳米技术
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光电子学
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DOI
高影响因子
Journal of the American Chemical Society
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2019
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IF 14.695
Yalan Zhang,Peijun Wang,Ming-Chun Tang,Dounya Barrit,Weijun Ke,Junxue Liu,Tao Luo,Yucheng Liu,Tianqi Niu,Detlef-M Smilgies,Zhou Yang,Zhike Liu,Shengye Jin,Mercouri G. Kanatzidis,Aram Amassian,Shengzhong Frank Liu,Kui Zhao
The two-dimensional (2D) perovskites stabilized by alternating cations in the interlayer space (ACI) define a new type of structure with different physical properties than the more common Ruddlesden–Popper counterparts. However, there is a lack of understanding of material crystallization in films and its influence on the morphological/optoelectronic properties and the final photovoltaic devices. Herein, we undertake in situ studies of the solidification process for ACI 2D perovskite (GA)(MA)nPbnI3n+1 (⟨n⟩ = 3) from ink to solid-state semiconductor, using solvent mixture of DMSO:DMF (1:10 v/v) as the solvent and link this behavior to solar cell devices. The in situ grazing-incidence X-ray scattering (GIWAXS) analysis reveals a complex journey through disordered sol–gel precursors, intermediate phases, and ultimately to ACI perovskites. The intermediate phases, including a crystalline solvate compound and the 2D GA2PbI4 perovskite, provide a scaffold for the growth of the ACI perovskites during thermal annealing. We identify 2D GA2PbI4 to be the key intermediate phase, which is strongly influenced by the deposition technique and determines the formation of the 1D GAPbI3 byproducts and the distribution of various n phases of ACI perovskites in the final films. We also confirm the presence of internal charge transfer between different n phases through transient absorption spectroscopy. The high quality ACI perovskite films deposited from solvent mixture of DMSO:DMF (1:10 v/v) deliver a record power conversion efficiency of 14.7% in planar solar cells and significantly enhanced long-term stability of devices in contrast to the 3D MAPbI3 counterpart.
研究领域:
材料科学
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光伏技术
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物理化学
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DOI
高影响因子
Small
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2024
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IF 13
Yan Li,Yang Li,Zejia Zhao,Yanyan Li,Feng Song,Wei Huang
With the increasing popularity of the internet, it brings convenience to lives while also increases security risks. Physical Unclonable Functions (PUFs) can generate random, unclonable, and unique identifiers using their inherent physical characteristics, which have broad prospects in anti-counterfeiting. Herein, inspired by the irregular tree bark fissures and random skin wrinkles found in nature, a method for creating complex micro-wrinkles with unclonable random patterns is proposed by simply stretching hydrogels. The random texture information contained in the micro-wrinkles is digitized into binary codes using an adaptive threshold algorithm. Additionally, a novel “sandwich” label with a multilevel intelligent anti-counterfeiting system is proposed. The first-level involves photoluminescence encryption with adjustable luminescence within visible light range and modulated luminescence at different excitation wavelengths; the second-level includes strain-related mechanical encryption, and the third-level consists of highly random and unclonable micro-wrinkles. The certification difficulty increases as the anti-counterfeiting grade increases, thereby enhancing label security. Furthermore, space-selective doping of rare earth metal–organic framework (RE-MOF) fluorescent materials in hydrogels is achieved through the use of screen-printing technology. The concept of novel multilevel smart anti-counterfeiting PUF labels will further enhance current levels of counterfeiting prevention.
研究领域:
材料科学
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纳米技术
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光学
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安全与密码学
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DOI
高影响因子
ACS Applied Nano Materials
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2023
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IF 5.9
Xianghua Gong,Yang Li,Jinzhu Wu,Hongjun Kang,Xiaohong Wu
Recently, zeolites have been selected as a potential adsorbent for capturing space molecular contaminants owing to their strong adsorption ability and extreme stability in a harsh environment. Considering the adsorption process in a vacuum environment, enhancement of the adsorption performance of the zeolites is required. Unfortunately, up to now, the improved adsorption behavior for the space molecular contaminants of the modified zeolite adsorbent under ultralow pressure has rarely been reported. Herein, a 13X/ZnO adsorbent was prepared by incorporating ZnO nanoislands into the nanoporous zeolite 13X via atomic layer deposition (ALD). It is found that a representative 13X/ZnO-50 exhibits an increased adsorption capacity toward dimethyl phthalate and the outgassing species of J133 adhesive even under the ultralow pressure of 10–5 Pa. This could be attributed to the synergistic effects of physical interactions and chemical adsorption associated with the unique cage structure of the zeolite and the incorporated ALD-grown ZnO nanoislands. This work provides a useful strategy for developing the adsorbents used in space molecular contamination control during space missions.
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产品关联
DOI
高影响因子
CRYSTAL GROWTH & DESIGN
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2023
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IF 3.8
Xin Liu,Quanchao Zhang,Dou Zhao,Ruichen Bai,Yingying Hao,Bin Fang,Yinjie Ruan,Binbin Zhang,Tongyang Wang,Chongjian Zhou,Wanqi Jie,Yadong Xu
The organic–inorganic hybrid halide perovskite MAPbBr3 has been considered as a promising material in many applications; however, the bulk MAPbBr3 crystals grown by the widely adopted inverse temperature crystallization (ITC) method without forced convection reveal poor reproducibility and moderate quality. Here, we employ a near-net-shape seeded solution method to grow inch-sized MAPbBr3 crystals as a space-confined way to approach the suitable thickness and minimize the loss resulting by cutting and polishing. The rotation parameters for introducing forced convection is determined according to solute transport behavior, which is associated with the space confinement thickness and rotation rate. The as-grown MAPbBr3 crystal with good homogeneity exhibits a recorded FWHM value of 0.011° in the high-resolution X-ray diffraction rocking curve, ascribed to the lower grown-in stress and strain by the liquid-phase epitaxial growth. Finally, the MAPbBr3 semiconducting photodetector demonstrates a relatively high resistivity of 3.75 × 108 Ω·cm and superior photoresponse under 405 nm laser. The near-net-shape synthesis method with a space confinement is potentially extended to the growth of other halide perovskite bulk crystals.
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产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2023
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IF 13.6
Xiaoling Liu,Yitong Liu,Yue Wu,Shan Dong,Guoqin Qi,Cailing Chen,Shibo Xi,Pan Luo,Yihu Dai,Yu Han,Yu Zhou,Yu Guo,Jun Wang
Catalytic oxidation of volatile organic compounds like formaldehyde (HCHO) over the noble metals catalysts at room temperature is among the most promising strategies to control indoor pollution but remains one challenge to maximize the efficiency of noble metal species. Herein, we demonstrated the straightforward encapsulation of highly dispersive Pt nanoparticles (NPs) within BEA zeolite and adjacent with the surface hydroxyl groups to reach the synergistic HCHO oxidation at 25 °C. High efficiency and long-term stability was reached under large space velocity (∼100% conversion at 180,000 mL (g cat × h) −1 and >95% at 360,000 mL (g cat × h) −1 ), affording rapid elimination rate of 129.4 μmol (g Pt × s) −1 and large turnover frequency of 2.5 × 10 −2 s −1 . This is the first synergy example derived from the hydroxyl groups and confined noble metals within zeolites that accelerated the rate-determining step, the formate transformation, in the HCHO elimination.
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产品关联
DOI
PubMed
高影响因子
POULTRY SCIENCE
·
2022
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IF 4.014
Lingsen Zeng,Guiyun Xu,Caiyun Jiang,Junying Li,Jiangxia Zheng
ABSTRACT Eggshell color is the most intuitive external feature that affects consumer acceptance. Different eggshell colors are mainly determined by protoporphyrin IX and biliverdin content. The selection of eggshell color by the human eye with an eggshell color fan can be roughly classified. Although more technologically advanced, a colorimeter or spectrophotometer might be of limited use when observing a variety of shell colors, such as brown, olive, green, and blue. This study aimed to provide a convenient and accurate method for predicting the content of eggshell pigments by measuring eggshell color using the Commission International de L'Eclairage ( CIE ) L*a*b* system. The results showed the deepening of eggshell color in brown and blue eggs was correlated with increased eggshell pigment deposition, and eggshell color was significantly positively correlated with eggshell pigment content ( P < 0.01). Furthermore, the adjusted R 2 of the fitted function was in the range of 0.81 to 0.89, and the Spearman rank correlation coefficient between the predicted and true values was in the range of 0.89 to 0.93. In brief, the L*a*b* method of measuring eggshell color to predict the amount of eggshell pigment deposition is convenient, effective, and promising for layer production.
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DOI
PubMed
高影响因子
NANOTECHNOLOGY
·
2023
·Vol. 34
·期 40
·405402
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IF 3.5
Jian Lin,Yanfei Li,Yihan Song,Jingping Zhang,Haiming Xie,Haizhu Sun
Although significant achievements in improving the stability of MoS2 anodes have been made, the cycling life in most studies is still less than 1000 cycles. This is because MoS2 anodes directly contact the electrolyte and generate byproducts, leading to the loss of active mass and capacity decay. Herein, the inner–outer dual space protection of MoS2 fibers is realized by regulating the surface and interface structure of electrospinning precursors (noted as X-MoS2/CNFs). Inside the fibers, Mo–N covalent bond is constructed to anchor the active material, preventing MoS2 from falling off the matrix after multiple cycles. Simultaneously, surface of the fibers, a stable solid electrolyte interface layer is induced to prevent contact between active materials and electrolytes. In addition, the initial Coulombic efficiency is enhanced as high as 84.4%. The profound investigations of morphological evolution and internal real-time resistance confirm the double structural protection of 800-MoS2/CNFs. As a result, a decent cycling performance (408.9 mAh g−1 at 1000 mA g−1 for 2000 cycles) and the satisfied rate capacities (100–1000 mA g−1) are achieved. This work provides a new idea for the preparation of stable anodes for alkali metal ion secondary batteries.
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产品关联
DOI
PubMed
高影响因子
NANOTECHNOLOGY
·
2019
·Vol. 30
·期 41
·415602
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IF 3.399
Na Wang,Min Zhang,Libin Liu,Jing Zheng,Jingli Xu,Tasawar Hayat,Njud S. Alharbi
A unique nanostructure of Fe3O4 nanoparticles (NPs)-in/carbon layer/out-Ni NPs was developed and proved to be an efficient catalyst and protein adsorbent. This kind of nanostructure was formed through a space-confined pyrolysis procedure using polydopamine-Ni2+ coated Fe-NTA nanowires as the precursor. A N-doped carbon interlayer derived from polydopamine (PDA) supported a large amount of Ni NPs and entrapped well-defined Fe3O4 NPs, which were obtained through reduction of Ni2+, Fe3+ by carbonized NTA groups and a PDA layer. The contributions of the unique configuration along with the high density of Ni NPs in Fe3O4@C-Ni are significant for improving catalysis and protein adsorption performance, which is expected to be a promising alternative to other conventional catalysts and protein adsorbents. Due to the unique novel nanostructure, this nanocomposite possesses a wide range of applications, not only for catalytic reactions but also for other inhomogeneous reactions.
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产品关联
DOI
PubMed
高影响因子
CHEMISTRY OF MATERIALS
·
2019
·
IF 10.159
Yang Wang,Lianjie Ling,Wei Zhang,Jianping Guo,Kejian Ding,Wubiao Duan,Bo Liu
“Ship-in-bottle” strategy used for encapsulating small metal clusters into metal–organic frameworks (MOFs) has been well established in the past decades, whereas immobilizing shape-controllable metal nanocrystals’ (MNCs) which was expected to show “shape effects” in catalysis remains as a challenging work. Herein, by the new developed pore-expanding pattern of digging holes in the central of MOFs crystals to create mesopores-concentrated structure, a successful metal nanocrystal shapes manipulation (cubes, rods, triangular bipyramids, icosahedrons, truncated octahedrons, and concave cubes) in the cavities was accomplished. Meanwhile, the tight relations among MOFs internal space types, sizes, and the reduced MNCs’ location and shape evolutions in the encapsulation process were revealed for the first time. In catalyzing the reaction of hydrogenation of o-chloronitrobenzene to produce o-chloroaniline, the as-prepared shape-controllable MNCs@MOFs exhibited excellent synergistic effects on both raw materials conversion and byproducts inhabitation efficiencies.
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）