ACS Applied Materials & Interfaces
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2024
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IF 8.3
Jie Zeng,Lei Xie,Tianyi Liu,Yanjun He,Weiyan Liu,Qing Zhang,Junyan Li,Xiaofeng Li,Beilei Qiu,Shan Zhou,Qirui Liang,Xudong Wang,Kang Liang,Jinyao Tang,Jian Liu,Lei Jiang,Gang Huang,Biao Kong
In the field of sustainable chemistry, it is still a significant challenge to realize efficient light-powered space-confined catalysis and propulsion due to the limited solar absorption efficiency and the low mass and heat transfer efficiency. Here, novel semiconductor TiO2 nanorockets with asymmetric, hollow, mesoporous, and double-layer structures are successfully constructed through a facile interfacial superassembly strategy. The high concentration of defects and unique topological features improve light scattering and reduce the distance for charge migration and directed charge separation, resulting in enhanced light harvesting in the confined nanospace and resulting in enhanced catalysis and self-propulsion. The movement velocity of double-layered nanorockets can reach up to 10.5 μm s–1 under visible light, which is approximately 57 and 119% higher than that of asymmetric single-layered TiO2 and isotropic hollow TiO2 nanospheres, respectively. In addition, the double-layered nanorockets improve the degradation rate of the common pollutant methylene blue under sustainable visible light with a 247% rise of first-order rate constant compared to isotropic hollow TiO2 nanospheres. Furthermore, FEA simulations reveal and confirm the double-layered confined-space enhanced catalysis and self-propulsion mechanism.
研究领域:
材料科学
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可持续化学
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纳米技术
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DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2020
·Vol. 44
·期 36
·15396-15402
·
IF 3.288
Lina Zhang,Min Zhang,Libin Liu,Yanqin Wang,Jing Zheng,Jingli Xu
Decoration of transition metal Ni nanoparticles (NPs) on magnetic supports is of special interest for histine-rich protein adsorption. Through a combination of a hydrothermal reaction, a mussel-inspired coating and a carbonization strategy, we have investigated two synthetic paths to access hierarchical nickel-based magnetic nanostructures: (1) Fe3O4 spheres are covered with hierarchical NiMoO4 nanosheets and subsequently coated with a polydopamine (PDA) layer, and Fe3O4@MoO2∩C–Ni composites are synthesized after pyrolysis in a nitrogen atmosphere, and (2) Fe3O4 spheres are coated with PDA and subsequently covered with hierarchical NiMoO4 nanosheets, and then Fe3O4@C∩MoO2–Ni composites are obtained after pyrolysis in a nitrogen atmosphere. We find that only route 1, which can be defined as a space-confined carbonization strategy, results in the formation of a high coverage of nickel NPs with tiny diameter decorated on Fe3O4 spheres. Route 2, defined as a non-space-confined carbonization strategy, leads to the formation of low density and large size Ni NPs. Detailed examination of the nickel-based magnetic composites obtained by route 1 displayed superior adsorption capacity for BHb than that of route 2. The results demonstrated that the space-confined strategy is greatly beneficial for the synthesis of Ni-based magnetic composites with high coverage, which would pave a novel way for synthesizing high density Ni-based magnetic composites.
研究领域:
材料科学
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生物医学工程
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产品关联
DOI
高影响因子
Small
·
2024
·
IF 13
Manman Yang,Xiaoling Wu,Anfeng Li,Xia Hao,Lili Wu,Haibo Tian,Dingyu Yang,Jingquan Zhang
The Cs 3 Bi 2 I 9 single crystal, as an all-inorganic non-lead perovskite, offers advantages such as stability and environmental friendliness. Its superior photoelectric properties, attributed to the absence of grain boundary influence, make it an outstanding X-ray detection material compared to polycrystals. In addition to material properties, X-ray detector performance is affected by the thickness of the absorption layer. Addressing this, a space-confined method is proposed. The temperature field is determined through finite element simulation, effectively guiding the design of the space-confined method. Through this innovative method, a series of thickness-controlled perovskite single crystal wafers (PSCWs) are successfully prepared. Corresponding X-ray detectors are then prepared, and the impact of single crystal thickness on device performance is investigated. With an increase in single crystal thickness, a rise followed by a decline in device sensitivity is observed, reaching an optimal value at 0.7 mm thickness at 40V mm −1 with a device performance of 11313.6µC Gy −1 cm −2 . This space-confined method enables the direct growth of high-quality perovskite single crystals with specified thickness, eliminating the need for slicing or etching.
研究领域:
材料科学
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物理学
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产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2017
·
IF 4.798
Xiaoyu Xie,Xiaojun He,Xiaolong Shao,Shian Dong,Nan Xiao,Jieshan Qiu
It is a challenge to synthesize low-cost carbon materials with abundant pores by a simple route for supercapacitors. Herein, layered microporous carbons (LMPCs) with the specific surface area up to 1865 m 2 g −1 are fabricated from coal tar and melamine via a directing, space-confinement and self-sacrificed template strategy coupled with in-situ KOH activation. The button-type supercapacitor fabricated from LMPCs exhibits a high specific capacitance of 274 F g −1 at 0.05 A g −1 , a good rate performance of 191 F g −1 at 20 A g −1 and a superior cycle stability with 98.8% capacitance retention after 10000 cycles. This work presents a facile strategy for mass production of LMPCs from liquid polycyclic hydrocarbon molecules for supercapacitors.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS LETTERS
·
2023
·
IF 3
Ke Xu,Ziwang Kan,Feiyu Zhang,Yuan Qu,Siqi Li,Song Liu
Ethanol gas sensing has been attracting more and more attention due to its significance, such as human health care, and detection in drunk driving. However, the low sensitivity, the high limit of detection and the long response time restrain its further application development. Here we report SnO 2 nanomaterials with well-controlled hollow multi-shelled structure as an efficient ethanol gas sensing. The shell number was tuned by the concentration of the precursor. Among, the double-shell SnO 2 nanomaterials (SnO 2 -D) exhibited the best selectivity towards ethanol, reaching 22.5 of R g /R a ratio. Moreover, the 1 ppm ethanol was even detected, the R g /R a ratio being 1.37. The response time to 100 ppm ethanol was only 2 s. Furthermore, the SnO 2 -D maintained the same performance after 21 days of continuous response to 100 ppm ethanol. Based on experiments and in situ FTIR, the outstanding sensing performance is attributed to the excellent spatial confinement and large active surface of the double-shell that combine the enhanced gas adsorption, and increase conductive electrons.
研究领域:
材料科学
·
传感器技术
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DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2020
·
IF 4.939
Wei Cheng,Yumei Peng,Yi Wang,Weidong Jiang,Yan Long,Guangyin Fan
Hydrogen evolution from ammonia borane (AB) hydrolysis is of great importance considering the ever-increasing demand for green and sustainable energy. However, the development of a facile and efficient strategy to construct high-performance catalysts remains a grand challenge. Herein, we report an amino-group and space-confinement assisted strategy to fabricate Rh nanoparticles (NPs) using amino-functionalized metal-organic-frameworks (UiO-66-NH 2 ) as a NP matrix (Rh/UiO-66-NH 2 ). Owing to the coordination effect of amino-group and space-confinement of UiO-66-NH 2 , small and well-distributed Rh NPs with a diameter of 3.38 nm are successfully achieved, which can be served as efficient catalysts for AB hydrolysis at room temperature . The maximum turnover frequency of 876.7 min −1 is obtained by using the Rh/UiO-66-NH 2 with an optimal Rh loading of 4.38 wt% and AB concentration of 0.2 M at 25 °C, outperforming most of the previously developed Rh-based catalysts. The catalyst is also stable in repetitive cycles for five times. The high performance of this catalyst must be ascribed to the structural properties of UiO-66-NH 2 , which enable the formation of small and well-dispersed Rh NPs with abundant accessible active sites. This study provides a simple and efficient method to significantly enhance the catalytic performance of Rh for AB hydrolysis.
研究领域:
材料科学
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催化化学
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能源化学
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2025
·
IF 12.1
Riliga Wu,Hongyu Dai,Weijiang Guan,Chao Lu
Clusteroluminescence (CL) clusters in the absence of aromatic or π-conjugated structures have emerged as a new family of luminescent materials due to their abundant sources and inherent biocompatibility. However, there is an inborn challenge in controlling the size of CL clusters from random aggregation of micrometers to ordered assembly of sub-10 nanometers. Such an inherent drawback significantly restricts their progress from theoretical research to practical applications. To address this obstacle, a novel approach using space-confined templates is proposed to synthesize CL clusters with tunable sizes. Space-confined templates with sizes of ≈2–6 nm are constructed to effectively confine non-aromatic molecules, yielding size-controllable and luminescence-tunable CL clusters. The versatility of this synthetic strategy is further proved by using non-conjugated molecules, such as L-valine and L-isoleucine. Finally, the potential applications of the synthesized CL clusters have been implemented in cell nucleus imaging owing to their sub-10 nm size and efficient luminescence. The success of this work not only offers a versatile space-confined approach to synthesize size-tunable CL clusters within sub-10 nm, but also opens new avenues for the deployment of CL clusters in advanced applications.
研究领域:
材料科学
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生物医学工程
·
化学合成
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Danqing Shen,Xueping Chen,Gaohui Lu,Ruonan Shi,Jianming Pan
Monodispersed magnetic sorbents (MMSs) display great potential for adsorptive removal of pollutants, but the conventional methods cannot meet requirements of scalable, time-saving, and energy-efficient fabrication. In this work, space-confined synthesis of nitrilotriacetic acid immobilized magnetic sorbents (NAIMSs-E) in aqueous continuous phase of high internal phase emulsions (HIPEs) was conducted, and as-prepared high quality sorbents (sensitive response to magnetic field, abundant affinity groups, uniform shell size, and stable structure) were applied for removing bivalent cadmium (Cd 2+ ) from aqueous solutions. 2-(Bis-carboxymethyl-amino)-6-{3-[2-(3,4-dihydroxy-phenyl)-ethylcarbamoyl]-propionylamino}-hexanoic acid was firstly synthesized as a robust anchor and a functional modifier onto magnetic Fe 3 O 4 . The effects of synthesis conditions to the morphology and structure were studied, and the forming mechanism based on emulsion nano-reactor was demonstrated. NAIMSs-E are expected to possess fast equilibrium rate, and approximately 90% of the maximum adsorption capacity is achieved within 60 min. The maximum uptake amounts are 49.98 mg g −1 , 80.58 mg g −1 , 176.4 mg g −1 at 288 K, 298 K, and 308 K, respectively, and the monolayer chemisorption based on sharing and transferring of electrons is the main rate-limiting step. Moreover, NAIMSs-E have excellent regeneration and specific affinity towards Cd 2+ , even for actual water samples. In addition, the spontaneous, endothermic, and entropy increased adsorption process is also confirmed. Therefore, this work not only presents a new clue to fabricate MMSs via simple emulsion nano-reactor, but also provides a novel platform for Cd 2+ removal.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2022
·
IF 10.319
Meng Xu,Menghua Zhu,Dou Zhao,Sixin Chen,Shilin Liu,Quanchao Zhang,Pei Yuan,Binbin Zhang,Paul Sellin,Wanqi Jie,Yadong Xu
In comparison to inorganic counterparts, organic semiconducting (OSC) crystalline films are promising for building large-area and flexible ionizing radiation detectors for X-ray imaging or dosimetry due to their tissue equivalence, simple processing and large-scale production accessibility. Fabrication processes, however, hinder the ability to generate aligned and large-area films with high carrier mobility. In this work, the space-confined melt process is used to produce highly orientated 4HCB (4-hydroxycyanobenzene) OSC films with a large area of 15 × 18 mm 2 . The out-of-plane direction of the 4HCB film is <001>, and the benzene rings are found to be extensively overlapped inside the in-plane direction, according to the XRD patterns. The film exhibits a high resistivity up to 10 12 Ω cm, and high hole mobility of 10.62 cm 2 V −1 s −1 . Furthermore, the 4HCB (80 μm-thick film) based X-ray detectors can achieve a sensitivity of 93 μC Gy air −1 cm −2 and on/off ratio of 157. The device also shows steady flexibility, with no degradation in detecting function after 100 cycles of bending. Finally, the proposed 4HCB film detectors demonstrated a high-resolution X-ray imaging capability. The imaging of several materials with sharp edges (copper and polytetrafluoroethylene) has been obtained. This work has developed a fast but efficient approach for producing large-area, highly oriented OSC films for high-performance X-ray detectors.
研究领域:
材料科学
·
医学影像
·
有机电子学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Xiang Zhang,Jinghui Li,Peipei Du,Zixi Shen,Hao Chen,Haozhi Wang,Nian Liu,Junhu Cai,Jiajun Luo,Enguo Chen
Perovskite light-emitting diodes (PeLEDs) have attracted significant interest in next-generation intelligent displays. Vacuum deposition is a promising method for integrating PeLEDs into intelligent displays due to its high manufacturability and easy pixelation, as proven in industrial organic light-emitting diode production. However, achieving spatially confined grains with optimized crystal remains challenging in vacuum-deposited perovskite. Here, a trisource coevaporation strategy is proposed to introduce MABr to form the MAxCs1–xPbBr3 structure with carriers’ spatial confinement and defect suppression as well. This approach enables PeLEDs to contain excellent external quantum efficiency (EQE), which is nearly 10-fold as the untreated device. Based on this, we realize the first reported vacuum-deposited transparent PeLEDs with double-sided emission and an amazing maximum EQE of 7.6% by replacing Al with an optimized Ag:Mg electrode. These transparent PeLEDs are integrated into a bifunctional intelligent display device with both accurate heart rate detection and imaging display, which exhibit bright patterned emission and accurate heart rate detection.
研究领域:
材料科学
·
光学工程
·
电子工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Limin Wang,Zhenxiang Chen,Yongchun Liu,Rajkumar Devasenathipathy,Dan Li,Dujuan Huang,Qiulan Huang,Liujie Lu,Ziyi Huang,Du-Hong Chen,Youjun Fan,Wei Chen
The practically low energy density limits the large-scale application of graphene in supercapacitors. Here, we propose a space-confined method for the preparation of fluorine-modified graphene (FG) by using fluorine-containing groups (PF 6 – or BF 4 – ) as co-intercalated ions and reactants. The semi-ionic C–F bonds in FG contribute a brilliant capacitive performance in both acidic and alkaline electrolytes. Particularly, in alkaline medium, the FG electrode exhibited an ultrahigh specific capacitance (1210 F g −1 ), surpassing 2 orders of the theoretical capacitance value of graphene. Meanwhile, the FG-assembled symmetrical supercapacitor device (FG-SSD) possesses ultrahigh energy density (418.7 Wh kg −1 ) and power density (2 kW kg −1 ) in acidic medium, highlighting the practical application of supercapacitors. Theoretical calculations revealed an increased electrochemical double layer capacitance and amplified the electrochemical window of FG-SSD. This work demonstrates a spatially confined method for the preparation of functional graphene and its spectacular potential for supercapacitor-related electronics.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBON
·
2022
·
IF 11.307
Yongqian Shen,Fan Zhang,Yuchen Zhang,Pengfei Song,Feng Gao,Dong Zhang,Chunli Liu,Jiqiang Ma,Huixia Feng,Xueyan Du
Advanced microwave absorbers (MAs) containing magnetic particles and carbon nanofibers (CNFs) have raised widespread attention in the rapid popularization of electronic communication equipment. However, it is quite challenging to control the growth of magnetic particles in CNFs to improve electromagnetic waves (EMWs) loss and attenuation. Herein, a novel space-confined strategy was adopted to develop Co/CoO/SiO 2 /CNFs, in which Co/CoO nanoparticles (NPs) with single domain size and dispersed distribution could achieve enhanced magnetic loss and dielectric loss. The introduction of nano-SiO 2 in the system could enhance the dielectric confinement effect of the nanofibers (NFs), while an interfacial confinement network could also be constructed to realize the refinement of Co/CoO NPs, enhance the electromagnetic (EM) loss, and ultimately ameliorate the microwave absorption performance of as-obtained NFs. When the additive amount of nano-SiO 2 in the spinning solution was 1.0 mg, the as-prepared Co/CoO/SiO 2 /CNFs reached the optimal reflection loss (RL) of −52.9 dB at 12.64 GHz with a thickness of 2.5 mm, and the effective bandwidth (EBW) reached 5.67 GHz (10.46–16.13 GHz). Furthermore, the excellent hydrophobic properties of the CNFs endow them with potential self-cleaning function. The confinement strategy proposed in this work lays a foundation for the design of low-filling ratio and high-performance CNFs-based microwave absorbers, and presents a general approach for the synthesis of one-dimensional composite materials with controllable structures.
研究领域:
材料科学
·
电磁学
✓ 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）