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学者姓名：卢岳
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摘要 ：
Designing highly efficient photocatalysts is significantly important to degrade the harmful pollutions in water. In this study, photocatalyst of Fe3O4-ED-rGO with dissolved HPV was successfully prepared and electron microscopy characterization revealed that large number of single tungsten/vanadium atom oxide (ST/VAO) was homogeneously deposited on Fe3O4 nanoparticles in SMAO-MrGO-ED sample and occupied the bivalent Fe2+ sites. Meanwhile, phase analysis confirmed that the Fe3O4 nanocomposites were mostly conversed from the reducted Fe2O3 by the hydrolysis of rGO-ED-HPV. Such a highly dispersed monatomic adsorption on the bivalent Fe2+ of polycrystalline SMAO-MrGO-ED nanocomposite not only benefits for the visible light absorption from 2.7 eV to 2.10 eV, but also offers abundantly active sites to get the highest activity of 98.43% and 98.12% for ciprofloxacin (CF) and ibuprofen (IBF) photodegradation, respectively. All these discoveries give us a new insight to design the photocatalysts with high photodegradation efficiency, low cost, short reaction time and good reusability.
关键词 ：
Ciprofloxacin Ciprofloxacin Ibuprofen Ibuprofen Magnetic nanocomposite Magnetic nanocomposite Photodegradation Photodegradation Single metal atom oxide Single metal atom oxide
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| GB/T 7714 | Selvakumar, Karuppaiah , Wang, Yueshuai , Lu, Yue et al. Single metal atom oxide anchored Fe3O4-ED-rGO for highly efficient photodecomposition of antibiotic residues under visible light illumination [J]. | APPLIED CATALYSIS B-ENVIRONMENTAL , 2022 , 300 . |
| MLA | Selvakumar, Karuppaiah et al. "Single metal atom oxide anchored Fe3O4-ED-rGO for highly efficient photodecomposition of antibiotic residues under visible light illumination" . | APPLIED CATALYSIS B-ENVIRONMENTAL 300 (2022) . |
| APA | Selvakumar, Karuppaiah , Wang, Yueshuai , Lu, Yue , Tian, Bohai , Zhang, Zeyu , Hu, Jingcong et al. Single metal atom oxide anchored Fe3O4-ED-rGO for highly efficient photodecomposition of antibiotic residues under visible light illumination . | APPLIED CATALYSIS B-ENVIRONMENTAL , 2022 , 300 . |
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摘要 ：
The emerging data-intensive applications in optoelectronics are driving innovation toward the fused integration of sensing, memory, and computing to break through the restrictions of the von Neumann architecture. However, the present photodetectors with only optoelectronic conversion functions cannot satisfy the growing demands of the multifunctions required in single devices. Here, a novel route for the integration of non-volatile memory into a photodetector is proposed, with a WSe2/h-BN van der Waals heterostructure on a Si/SiO2 substrate to realize in-memory photodetection. This photodetector exhibits an ultrahigh readout photocurrent of 3.4 mu A and photoresponsivity of 337.8 A W-1 in the solar-blind wavelength region, together with an extended retention time of more than 10 years. Furthermore, the charge-storage-based non-volatile mechanism of h-BN/SiO2 is successfully proven through a novel analysis of in situ optoelectronic electron energy-loss spectroscopy. These results represent a leap forward to future applications and insightful mechanisms of in-memory photodetection.
关键词 ：
non-volatile photodetection non-volatile photodetection charge-storage effect charge-storage effect 2D materials 2D materials van der Waals heterostructures van der Waals heterostructures in-memory photodetectors in-memory photodetectors
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| GB/T 7714 | Li, Songyu , Zhang, Zeyu , Chen, Xiaoqing et al. A High-Performance In-Memory Photodetector Realized by Charge Storage in a van der Waals MISFET [J]. | ADVANCED MATERIALS , 2022 , 34 (10) . |
| MLA | Li, Songyu et al. "A High-Performance In-Memory Photodetector Realized by Charge Storage in a van der Waals MISFET" . | ADVANCED MATERIALS 34 . 10 (2022) . |
| APA | Li, Songyu , Zhang, Zeyu , Chen, Xiaoqing , Deng, Wenjie , Lu, Yue , Sui, Manling et al. A High-Performance In-Memory Photodetector Realized by Charge Storage in a van der Waals MISFET . | ADVANCED MATERIALS , 2022 , 34 (10) . |
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摘要 ：
Inefficient charge separation and insufficient surface catalytic sites remain the main impediment in developing highly efficient and selective catalysts for CO2 photoreduction. Surface defects are effective, but their function is always constrained within the defect location. Herein, a desirable surface cation vacancy strategy is implemented to solve the above obstacles over Bi4Ti3O12 nanosheets. The surface Ti vacancy (V-Ti) creates an atomic-level charge transfer channel on the surface of Bi4Ti3O12, allowing a rapid transfer of photon-generated electrons from the V-Ti site of neighboring Ti and O atoms to CO2 molecules. More importantly, V-Ti activates neighboring Ti and O atoms, which allows them a stronger ability for enhancing CO2 adsorption and conversion. Thus, a convenient and swift charge transfer channel and activated near surface region are formed on the surface of Bi4Ti3O12, profoundly boosting the CO2 reduction process, as evidenced by experimental and theoretical results collectively. Without any sacrificial agents or cocatalysts, Bi4Ti3O12 with an optimal V-Ti concentration exhibits an outstanding CO production rate of 15.17 mu mol g(-1) h(-1), nearly 5 times higher than that of pristine Bi4Ti3O12. This work unfolds a new function of surface cation vacancies to substantially enhance CO2 photoreduction.
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| GB/T 7714 | Liu, Lizhen , Hu, Jingcong , Lei, Ben et al. Cation vacancy activating surface neighboring sites for efficient CO2 photoreduction on Bi4Ti3O12 nanosheets [J]. | JOURNAL OF MATERIALS CHEMISTRY A , 2022 , 10 (38) : 20396-20401 . |
| MLA | Liu, Lizhen et al. "Cation vacancy activating surface neighboring sites for efficient CO2 photoreduction on Bi4Ti3O12 nanosheets" . | JOURNAL OF MATERIALS CHEMISTRY A 10 . 38 (2022) : 20396-20401 . |
| APA | Liu, Lizhen , Hu, Jingcong , Lei, Ben , Huang, Hongwei , Lu, Yue . Cation vacancy activating surface neighboring sites for efficient CO2 photoreduction on Bi4Ti3O12 nanosheets . | JOURNAL OF MATERIALS CHEMISTRY A , 2022 , 10 (38) , 20396-20401 . |
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摘要 ：
The open-circuit voltage (V-OC) of cesium-based perovskite solar cells (Cs-PSCs) is severely limited by carrier recombination both in bulk and at the interface of the perovskite layer, which mainly roots in its elevated fabrication temperature. Enhancing the quality of perovskite film and optimizing the device structure are effective strategies to improve the performance of Cs-PSCs. Here, the V-OC is markedly promoted by constructing CsPbI3/Cs(1-x)DMA(x)PbI(3) bulk heterojunction (BHJ) structure, which was spontaneously formed by a precisely controlled spatially selective phase transition method. The perovskite BHJ structure not only facilitates the charge separation and collection process by enhancing the built-in potential but also obviously reduces the carrier recombination loss. Importantly, a maximum V-OC of 1.23 V was obtained as the V-OC deficit was 0.45 V, and the champion power conversion efficiency (PCE) reached 20.32% (certified PCE of 19.66%). Our finding indicates that junction engineering will be a new strategy for efficient perovskite devices.
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| GB/T 7714 | Sun, Xiuhong , Shao, Zhipeng , Li, Zhipeng et al. Highly efficient CsPbI3/Cs(1-x)DMAxPbI(3) bulk heterojunction perovskite solar cell [J]. | JOULE , 2022 , 6 (4) : 850-860 . |
| MLA | Sun, Xiuhong et al. "Highly efficient CsPbI3/Cs(1-x)DMAxPbI(3) bulk heterojunction perovskite solar cell" . | JOULE 6 . 4 (2022) : 850-860 . |
| APA | Sun, Xiuhong , Shao, Zhipeng , Li, Zhipeng , Liu, Dachang , Gao, Caiyun , Chen, Chen et al. Highly efficient CsPbI3/Cs(1-x)DMAxPbI(3) bulk heterojunction perovskite solar cell . | JOULE , 2022 , 6 (4) , 850-860 . |
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摘要 ：
Lithium-rich layered oxides (LLOs) are prospective cathode materials for next-generation lithium-ion batteries (LIBs), but severe voltage decay and energy attenuation with cycling still hinder their practical applications. Herein, a series of full concentration gradient-tailored agglomerated-sphere LLOs are designed with linearly decreasing Mn and linearly increasing Ni and Co from the particle center to the surface. The gradient-tailored LLOs exhibit noticeably reduced voltage decay, enhanced rate performance, improved cycle stability, and thermal stability. Without any material modifications or electrolyte optimizations, the gradient-tailored LLO with medium-slope shows the best electrochemical performance, with a very low average voltage decay of 0.8 mV per cycle as well as a capacity retention of 88.4% within 200 cycles at 200 mA g-1 . These excellent findings are due to spinel structure suppression, electrochemical stress optimization, and Jahn-Teller effect inhibition. Further investigation shows that the gradient-tailored LLO reduces the thermal release percentage by as much as about 41% when the battery is charged to 4.4 V. This study provides an effective method to suppress the voltage decay of LLOs for further practical utilization in LIBs and also puts forward a bulk-structure design strategy to prepare better electrode materials for different rechargeable batteries.
关键词 ：
electrochemical stress electrochemical stress full concentration gradient full concentration gradient Li-ion batteries Li-ion batteries lithium-rich layered oxides lithium-rich layered oxides voltage decay voltage decay
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| GB/T 7714 | Wu Tianhao , Liu Xiang , Zhang Xu et al. Full Concentration Gradient-Tailored Li-Rich Layered Oxides for High-Energy Lithium-Ion Batteries. [J]. | Advanced materials , 2021 , 33 (2) : e2001358 . |
| MLA | Wu Tianhao et al. "Full Concentration Gradient-Tailored Li-Rich Layered Oxides for High-Energy Lithium-Ion Batteries." . | Advanced materials 33 . 2 (2021) : e2001358 . |
| APA | Wu Tianhao , Liu Xiang , Zhang Xu , Lu Yue , Wang Boya , Deng Qingsong et al. Full Concentration Gradient-Tailored Li-Rich Layered Oxides for High-Energy Lithium-Ion Batteries. . | Advanced materials , 2021 , 33 (2) , e2001358 . |
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摘要 ：
We have explored that the phase transition of colloidal perovskite CsPbI3 quantum dot (QD) during synthesis and purification processes are mainly induced by the increase of particle size (crystal growth). To stabilize the cubic structure, the metal cations Mn2+ and Zn2+ with smaller ion radius than that of Pb2+ were doped into the QD. These not only caused the lattice constriction and increased the Goldschmidt tolerance factor of perovskite structure, but also enhanced the Pb-I binding energy, all of which improve the tolerance of phase transition induced by the growth of crystal size during purification process. Besides, the doped QD solutions and films show fewer defects and lower trap density than those of the undoped samples, owing to the alleviation of lattice distortion. The results reveal that the Zn-doped and Mn-doped QD solar cells display power conversion efficiency of 13.5% and 12.0%, respectively, much higher than that of the control device.
关键词 ：
Solar cells Solar cells Perovskite quantum dots Perovskite quantum dots Doping Doping Structure stability Structure stability Phase transition Phase transition
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| GB/T 7714 | Huang, Xin , Hu, Jingcong , Bi, Chenghao et al. B-site doping of CsPbI3 quantum dot to stabilize the cubic structure for high-efficiency solar cells [J]. | CHEMICAL ENGINEERING JOURNAL , 2021 , 421 . |
| MLA | Huang, Xin et al. "B-site doping of CsPbI3 quantum dot to stabilize the cubic structure for high-efficiency solar cells" . | CHEMICAL ENGINEERING JOURNAL 421 (2021) . |
| APA | Huang, Xin , Hu, Jingcong , Bi, Chenghao , Yuan, Jifeng , Lu, Yue , Sui, Manling et al. B-site doping of CsPbI3 quantum dot to stabilize the cubic structure for high-efficiency solar cells . | CHEMICAL ENGINEERING JOURNAL , 2021 , 421 . |
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摘要 ：
Metallic nanowires usually exhibit ultrahigh strength but suffered low ductility. Previous studies on pure metals suggested this strength-ductility trade-off results from limiting the dislocation activities. However, it is unclear whether such deformation model is valid for a solid solution alloy as well. Here, for the first time, the atomic-scale deformation process of AuCu nanowires with size of-16 nm was investigated in situ. The results show the NWs exhibit superplasticity (-185%) and high strengths (-2.98 GPa) at room temperature. It was discovered that superplasticity originates from continuous full dislocation nucleation and disappearance, as well as dislocation dipole formation and annihilation etc., which differ from the previous studies in pure metals. The observed full dislocation activities, also different from the ones in the previous studies, suggested that, as the size of the metals is below-100 nm, their deformation should be governed by partial dislocation and twinning. (c) 2021 Elsevier Ltd. All rights reserved.
关键词 ：
Plastic deformation Plastic deformation Transmission electron microscopy Transmission electron microscopy Mechanical property Mechanical property Strength-ductility trade-off Strength-ductility trade-off
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| GB/T 7714 | Fu, L. , Yang, C. , Wei, R. et al. In situ atomic-scale observation of AuCu alloy nanowire with superplasticity and high strength at room temperature [J]. | MATERIALS TODAY NANO , 2021 , 15 . |
| MLA | Fu, L. et al. "In situ atomic-scale observation of AuCu alloy nanowire with superplasticity and high strength at room temperature" . | MATERIALS TODAY NANO 15 (2021) . |
| APA | Fu, L. , Yang, C. , Wei, R. , Pei, X. , Teng, J. , Kong, D. et al. In situ atomic-scale observation of AuCu alloy nanowire with superplasticity and high strength at room temperature . | MATERIALS TODAY NANO , 2021 , 15 . |
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摘要 ：
Methylamine (CH3NH2, MA) gas-induced fabrication of organometal CH3NH3PbI3 based perovskite thin films are promising photovoltaic materials that transform the energy from absorbed sunlight into electrical power. Unfortunately, the low stability of the perovskites poses a serious hindrance for further development, compared to conventional inorganic materials. The solid-state perovskites are liquefied and recrystallized from CH3NH2. However, the mechanism of this phase transformation is far from clear. Employing first principles calculations and ab initio molecular dynamics simulations, we investigated the formation energy of primary defects in perovskites and the liquefaction process in CH3NH2 vapor. The results indicated that defect-assisted surface dissolution leads to the liquefaction of perovskite thin films in CH3NH2 vapor. Two primary defects were studied: one is the Frenkel pair defect (including both negatively charged interstitial iodide ion (I-i(-)) and iodide vacancy (V-I(+)) at the PbI2-termination surface, and the other is the Schottky defects (methylammonium vacancy, V-MA) at the MAI-termination surface. Moreover, the defect-induced disorder in the microstructure reduces the degeneration of energy levels, which leads to a blue shift and broader absorption band gap, as compared to the clean perovskite surface. The mechanism of how defects impact the surface dissolution could be applied for the further design of high-stability perovskite solar cells.
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| GB/T 7714 | Zhou, Wencai , Zheng, Zilong , Lu, Yue et al. Understanding liquefaction in halide perovskites upon methylamine gas exposure [J]. | RSC ADVANCES , 2021 , 11 (33) : 20423-20428 . |
| MLA | Zhou, Wencai et al. "Understanding liquefaction in halide perovskites upon methylamine gas exposure" . | RSC ADVANCES 11 . 33 (2021) : 20423-20428 . |
| APA | Zhou, Wencai , Zheng, Zilong , Lu, Yue , Sui, Manling , Yin, Jun , Yan, Hui . Understanding liquefaction in halide perovskites upon methylamine gas exposure . | RSC ADVANCES , 2021 , 11 (33) , 20423-20428 . |
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摘要 ：
Capturing the photolysis process of archetypal perovskite materials (such as methylammonium lead triiodide, MAPbI(3)) into metallic Pb-0 is fundamentally important to understand the photodegradation pathway of organic-inorganic hybrid perovskites (OIHPs). In this study, the photodecomposition pathway of a MAPbI(3) film in an atmospheric argon (Ar) gas environment was quasi-in situ studied comprehensively. Under light illumination, the decomposition of the perovskite film is first triggered at the grain boundaries, along with an obvious generation of metallic lead (Pb-0) nanoparticles. Then, the degradation sites extend into the inner MAPbI(3) grains. By calculating the growth kinetics of the Pb-0 enriched nanoparticles, we can find that it strictly obeys an interfacial diffusion-controlled growth model. Atomic resolution high angle annular dark-field (HAADF) characterization confirms that the Pb-0 enriched nanoparticles are with Pb@PbI2-x (x approximate to 0.4) core-shell structures, while the interface between crystalline MAPbI(3) and amorphous PbI2-x controls the photodegradation pathway of perovskite films. To the best of our knowledge, this is the first time to directly observe the photolysis process of perovskite films in a practical environment (Ar gas and light illumination), particularly with nano or even atomic-scale resolution. Furthermore, the discovery of the interfacial-controlled photodegradation pathway of MAPbI(3) into amorphous PbI2-x and then into Pb@PbI2-x aggregates has never been elucidated before.
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| GB/T 7714 | Lu, Yue , Hu, Jingcong , Ge, Yang et al. Decisive influence of amorphous PbI2-x on the photodegradation of halide perovskites [J]. | JOURNAL OF MATERIALS CHEMISTRY A , 2021 , 9 (26) : 15059-15067 . |
| MLA | Lu, Yue et al. "Decisive influence of amorphous PbI2-x on the photodegradation of halide perovskites" . | JOURNAL OF MATERIALS CHEMISTRY A 9 . 26 (2021) : 15059-15067 . |
| APA | Lu, Yue , Hu, Jingcong , Ge, Yang , Tian, Bohai , Zhang, Zeyu , Sui, Manling . Decisive influence of amorphous PbI2-x on the photodegradation of halide perovskites . | JOURNAL OF MATERIALS CHEMISTRY A , 2021 , 9 (26) , 15059-15067 . |
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摘要 ：
2D-layered transition metal dichalcogenides (TMDCs) have attracted tremendous interest as candidate material for next-generation nanoelectronics because of their atomically layered lattices. However, their charge modulation based on chemical doping is commonly inefficient owing to the ultrathin crystal structures, which therefore limits their applications in electronic devices. Here, a photoinduced electrostatic modulation of WSe2 field-effect transistor with charge-trapping layers of hexagonal-BN (h-BN)/SiO2 is achieved for both n- and p-type polarities, which demonstrates a large on/off ratio exceeding 10(6). This electrostatic modulation of WSe2 performs a reversible and high carrier regulation from an electron density of 3 x 10(12) cm(-2) to a hole density of 1.5 x 10(12) cm(-2). Through this facile and powerful approach, a p-n homojunction rectifier and a complementary metal-oxide-semiconductor inverter are successfully prepared and perform the functions of AC-DC conversion and cascadable logic NOT. Consequently, these results provide a huge potential for wide applications of TMDC-based logic electronics.
关键词 ：
photoinduced electrostatic modulation photoinduced electrostatic modulation WSe WSe complementary metal-oxide-semiconductor (CMOS) inverter complementary metal-oxide-semiconductor (CMOS) inverter p-n homojunction p-n homojunction rectifier rectifier (2) (2)
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| GB/T 7714 | Li, Songyu , Chen, Xiaoqing , Zhang, Zeyu et al. Light-Rewritable Logic Devices Based on Van der Waals Heterostructures [J]. | ADVANCED ELECTRONIC MATERIALS , 2021 , 8 (1) . |
| MLA | Li, Songyu et al. "Light-Rewritable Logic Devices Based on Van der Waals Heterostructures" . | ADVANCED ELECTRONIC MATERIALS 8 . 1 (2021) . |
| APA | Li, Songyu , Chen, Xiaoqing , Zhang, Zeyu , Li, Xuhong , Deng, Wenjie , Liu, Famin et al. Light-Rewritable Logic Devices Based on Van der Waals Heterostructures . | ADVANCED ELECTRONIC MATERIALS , 2021 , 8 (1) . |
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