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学者姓名：陈戈
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摘要 ：
The development of economical, highly active, and robust electrocatalysts for oxygen evolution reaction (OER) is one of the major obstacles for producing affordable water splitting systems and metal-air batteries. Herein, it is reported that the subnanometric CoOx clusters with high oxidation state substitutionally dispersed in the lattice of rutile TiO2 support (Co-TiO2) can be prepared by a thermally induced phase segregation process. Owing to the strong interaction of CoOx clusters and TiO2 support, Co-TiO2 exhibits both excellent intrinsic activity and durability for OER. The turnover frequency of Co-TiO2 is up to 3.250 s−1 at overpotentials of 350 mV; this value is one of the highest in terms of OER performance among the current Co-based active materials under similar testing conditions; moreover, the OER current density loss is only 6.5% at a constant overpotential of 400 mV for 30 000 s, which is superior to the benchmark Co3O4 and RuO2 catalysts. Mechanism analysis demonstrates that charge transfer occurs between Co sites and their neighboring Ti atoms, triggering the efficient Co-Ti cooperative catalytic centers, in which OH* and O* are preferred to be adsorbed on the bridging sites of Co and Ti with favorable adsorption energy, inducing a lower energy barrier for O2 generation. © 2020 Wiley-VCH GmbH
关键词 ：
Benchmarking Benchmarking Binary alloys Binary alloys Catalytic oxidation Catalytic oxidation Charge transfer Charge transfer Cobalt Cobalt Electrocatalysts Electrocatalysts Metal-air batteries Metal-air batteries Oxide minerals Oxide minerals Oxygen Oxygen Oxygen evolution reaction Oxygen evolution reaction Ruthenium compounds Ruthenium compounds Titanium Titanium Titanium dioxide Titanium dioxide
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| GB/T 7714 | Yan, Yong , Liu, Chunyue , Jian, Hanwen et al. Substitutionally Dispersed High-Oxidation CoOx Clusters in the Lattice of Rutile TiO2 Triggering Efficient Co-Ti Cooperative Catalytic Centers for Oxygen Evolution Reactions [J]. | Advanced Functional Materials , 2021 , 31 (9) . |
| MLA | Yan, Yong et al. "Substitutionally Dispersed High-Oxidation CoOx Clusters in the Lattice of Rutile TiO2 Triggering Efficient Co-Ti Cooperative Catalytic Centers for Oxygen Evolution Reactions" . | Advanced Functional Materials 31 . 9 (2021) . |
| APA | Yan, Yong , Liu, Chunyue , Jian, Hanwen , Cheng, Xing , Hu, Ting , Wang, Dong et al. Substitutionally Dispersed High-Oxidation CoOx Clusters in the Lattice of Rutile TiO2 Triggering Efficient Co-Ti Cooperative Catalytic Centers for Oxygen Evolution Reactions . | Advanced Functional Materials , 2021 , 31 (9) . |
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摘要 ：
Engineering the local coordination environment in atomically dispersed catalyst has proven to be a prospective route to boost catalyst performance for hydrogen evolution reaction (HER). Herein, we present the utilization of local lattice distortion of TiO2 support to regulate the local coordination environment and electronic structures of atomically dispersed Pt catalysts, resulting in the enhanced performance toward HER. Spectral analysis uncovers an elongated Pt–O bond length, lower Pt–O coordination numbers, as well as less electron holes residing in Pt 5d orbitals for Pt species on distorted TiO2. Density functional theory (DFT) calculation reveal that the variation might weaken the hydrogen adsorption on Pt sites and cause the optimized ΔG value of H∗. As a result, the atomically dispersed Pt catalyst displays superior HER mass activity (62.34 A mg−1 Pt) and the highest turnover frequency (TOF) (56.1H2·s−1) at the 50 mV overpotential in an acid media that are 18.7 and 5.56 times higher than commercial Pt/C. The work should create a new avenue in manipulating the local coordination environment of catalysts via the lattice distortion of the support, and in pursuing desired catalytic performance. © 2021 Elsevier Ltd
关键词 ：
Bond length Bond length Catalyst supports Catalyst supports Coordination reactions Coordination reactions Density functional theory Density functional theory Electronic structure Electronic structure Gas adsorption Gas adsorption Hydrogen Hydrogen Hydrogen evolution reaction Hydrogen evolution reaction Oxide minerals Oxide minerals Platinum Platinum Spectrum analysis Spectrum analysis Titanium dioxide Titanium dioxide
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| GB/T 7714 | Cheng, Xing , Lu, Yue , Zheng, Lirong et al. Engineering local coordination environment of atomically dispersed platinum catalyst via lattice distortion of support for efficient hydrogen evolution reaction [J]. | Materials Today Energy , 2021 , 20 . |
| MLA | Cheng, Xing et al. "Engineering local coordination environment of atomically dispersed platinum catalyst via lattice distortion of support for efficient hydrogen evolution reaction" . | Materials Today Energy 20 (2021) . |
| APA | Cheng, Xing , Lu, Yue , Zheng, Lirong , Pupucevski, Max , Li, Hongyi , Chen, Ge et al. Engineering local coordination environment of atomically dispersed platinum catalyst via lattice distortion of support for efficient hydrogen evolution reaction . | Materials Today Energy , 2021 , 20 . |
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摘要 ：
In this study, we employed in situ liquid cell transmission electron microscopy (LC-TEM) to carry out a new design strategy of precisely regulating the microstructure of large-sized cocatalysts for highly efficient energy harvesting. This unique strategy was conducted by dynamically in situ monitoring the entire process of the galvanic replacement reaction between Cu nanowires and Au ion solutions to reveal the detailed microstructural evolution at the nanometer scale, which has never been achieved by conventional chemical methods. Based on the strategy, four kinds of cocatalysts were designed and fabricated, which have typical structural characteristics that correspond to different reaction stages. By coupling them with ultrafine photocatalysts to construct photocatalytic systems, the photocatalytic hydrogen production of the optimized system is 65 times higher than that of the counterpart photocatalysts, strongly demonstrating the feasibility of the design via in situ liquid cell TEM. The strategy here provides an innovative way to design new kinds of catalytic systems.
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| GB/T 7714 | Gao, Chunlang , Zhuang, Chunqiang , Li, Yuanli et al. In situ liquid cell transmission electron microscopy guiding the design of large-sized cocatalysts coupled with ultra-small photocatalysts for highly efficient energy harvesting [J]. | JOURNAL OF MATERIALS CHEMISTRY A , 2021 , 9 (22) : 13056-13064 . |
| MLA | Gao, Chunlang et al. "In situ liquid cell transmission electron microscopy guiding the design of large-sized cocatalysts coupled with ultra-small photocatalysts for highly efficient energy harvesting" . | JOURNAL OF MATERIALS CHEMISTRY A 9 . 22 (2021) : 13056-13064 . |
| APA | Gao, Chunlang , Zhuang, Chunqiang , Li, Yuanli , Qi, Heyang , Chen, Ge , Sun, Zaicheng et al. In situ liquid cell transmission electron microscopy guiding the design of large-sized cocatalysts coupled with ultra-small photocatalysts for highly efficient energy harvesting . | JOURNAL OF MATERIALS CHEMISTRY A , 2021 , 9 (22) , 13056-13064 . |
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摘要 ：
Solar water evaporation is a sustainable and efficient way to produce fresh water. Identifying highly efficient photothermal materials is an important step for achieving high evaporation rates. However, the effects of the water interfacial area are rarely paid any attention, although a few reports have demonstrated high evaporation rates from micro-/nanostructured devices. In this work, we introduce a new term, water mass per unit surface area (WMUA), to connect the water mass and interfacial area. We can regulate WMUA using different commercial porous materials to realize water management in devices, which further affects the evaporation rates. The optimized device is composed of suedette sponge, filter paper, and polydopamine as the water-transportation, water-restrictive, and photothermal materials, respectively, and it achieves an evaporation rate of 1.8 kg m−2h−1and energy efficiency of ∼92%. This presents a new strategy for the rational design of device structures and the promotion of evaporation rates, pushing this field into new areas. © The Royal Society of Chemistry 2021.
关键词 ：
Energy efficiency Energy efficiency Evaporation Evaporation Materials handling Materials handling Oceanography Oceanography Porous materials Porous materials Water management Water management
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| GB/T 7714 | Sun, Yukun , Zong, Xupeng , Qu, Dan et al. Water management by hierarchical structures for highly efficient solar water evaporation [J]. | Journal of Materials Chemistry A , 2021 , 9 (11) : 7122-7128 . |
| MLA | Sun, Yukun et al. "Water management by hierarchical structures for highly efficient solar water evaporation" . | Journal of Materials Chemistry A 9 . 11 (2021) : 7122-7128 . |
| APA | Sun, Yukun , Zong, Xupeng , Qu, Dan , Chen, Ge , An, Li , Wang, Xiayan et al. Water management by hierarchical structures for highly efficient solar water evaporation . | Journal of Materials Chemistry A , 2021 , 9 (11) , 7122-7128 . |
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摘要 ：
将微视频的创意及快速制作的特点与基础化学实验教学相结合,并以此为应用案例,探讨微视频技术在基础化学实验教学中的应用。微视频技术的应用有助于提升学习过程的趣味性、互动性,规范实验操作,进行探索性学习;同时促进学生之间的交流学习,深刻理解和掌握知识点,提升实验实践教学环节的投入产出效率。
关键词 ：
微视频技术 微视频技术 视频制作 视频制作 基础化学实验 基础化学实验
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| GB/T 7714 | 赵煜娟 , 李钒 , 孙少瑞 et al. 微视频技术在基础化学实验教学中的应用探索 [J]. | 教育教学论坛 , 2020 , (51) : 389-390 . |
| MLA | 赵煜娟 et al. "微视频技术在基础化学实验教学中的应用探索" . | 教育教学论坛 51 (2020) : 389-390 . |
| APA | 赵煜娟 , 李钒 , 孙少瑞 , 陈戈 . 微视频技术在基础化学实验教学中的应用探索 . | 教育教学论坛 , 2020 , (51) , 389-390 . |
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摘要 ：
本发明提供了一种具有电催化还原CO2为能源的纳米Cu‑Au合金催化剂的制备方法，能够将CO2还原为有价值的气相产物(如C2H4, C2H6)，改善Cu基合金催化剂的电催化还原CO2性能，提高了对C2H4的还原选择性能。本发明通过筛选不同种类和不同浓度的贵金属盐溶液处理形成合金材料，最终确定Cu与Au进行合金化，采用简单的化学液相还原法制备所需纳米Cu‑Au合金催化材料。探究Cu‑Au合金电催化剂形貌和组分对电催化还原CO2性能的影响，为电催化剂的合理设计提供了一定的借鉴意义，该过程，安全可靠，操作简单，成本低廉，具有良好的应用前景。
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| GB/T 7714 | 陈戈 , 屈晓东 . 一种具有电催化还原CO2为能源的纳米Cu-Au合金催化剂的制备方法 : CN202010178611.0[P]. | 2020-03-14 . |
| MLA | 陈戈 et al. "一种具有电催化还原CO2为能源的纳米Cu-Au合金催化剂的制备方法" : CN202010178611.0. | 2020-03-14 . |
| APA | 陈戈 , 屈晓东 . 一种具有电催化还原CO2为能源的纳米Cu-Au合金催化剂的制备方法 : CN202010178611.0. | 2020-03-14 . |
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摘要 ：
Designing high efficiency non-noble metal catalysts for electrochemical hydrogen and oxygen evolution reactions (HER and OER) is a challenging and promising task. In the present work, a large-scale self-supported black nickel sheet composed of nickel nanorod arrays (B-Ni) was successfully fabricated via electroplating with a nanostructured Si template assisted strategy, and Ni3N coating layer was coated on the structured surface followed by a nitrogen plasma treatment with different treatment durations. The black color is due to the immensely enhanced light absorption through the surface nanostructures with high aspect ratio. The samples show promising catalytic performance when used as electrochemical catalysts for both HER and OER in alkaline electrolyte. Benefiting from the nanostructure and the Ni3N coating, B-Ni_N-2 _10 min exhibits low onset potentials of 1.560 and 0.165 V at a current density of 10 mA/cm(2) for OER and HER, respectively. The calculated electrochemical surface area (ECSA) for B-Ni is 10 times higher than the pristine Ni sheet (P-Ni), while after nitrogen plasma treatment, the ECSA for B-Ni_N-2 _10 min is 21 times higher than that of the P-Ni. In addition, all the catalysts show good electrochemical stabilities. All the improvements for the electrochemical performances suggest that nanostructured nickel nitride could be a promising inexpensive catalyst system for both OER and HER processes.
关键词 ：
electrochemical water splitting electrochemical water splitting large scale nanostructured materials large scale nanostructured materials Ni3N Ni3N Ni nanorod arrays Ni nanorod arrays nitrogen plasma nitrogen plasma
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| GB/T 7714 | Wang, Hongmei , Xiong, Jie , Cheng, Xing et al. Ni3N-Coated Ni Nanorod Arrays for Hydrogen and Oxygen Evolution in Electrochemical Water Splitting [J]. | ACS APPLIED NANO MATERIALS , 2020 , 3 (11) : 10986-10995 . |
| MLA | Wang, Hongmei et al. "Ni3N-Coated Ni Nanorod Arrays for Hydrogen and Oxygen Evolution in Electrochemical Water Splitting" . | ACS APPLIED NANO MATERIALS 3 . 11 (2020) : 10986-10995 . |
| APA | Wang, Hongmei , Xiong, Jie , Cheng, Xing , Fritz, Mathias , Ispas, Adriana , Bund, Andreas et al. Ni3N-Coated Ni Nanorod Arrays for Hydrogen and Oxygen Evolution in Electrochemical Water Splitting . | ACS APPLIED NANO MATERIALS , 2020 , 3 (11) , 10986-10995 . |
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摘要 ：
Hydrogen peroxide (H2O2) is a versatile and environmentally friendly oxidant with a wide range of industrial and household applications. In recent years, the decentralization of H2O2 production through the two-electron oxygen reduction reaction (ORR) has emerged as an attractive alternative to the well-established anthraquinone process. And of the many electrocatalysts developed for the two-electron ORR to produce H2O2, metal-free carbon catalysts (MFCCs) have received extensive attention due to their cost-effectiveness and natural abundance. Based on this, this review will provide an in-depth overview into MFCC design and fabrication with an emphasis on porosity control, heteroatom doping, oxygen functionalization, defect engineering and organic-inorganic interface engineering. This review will also discuss and analyze the interplays between these factors in terms of MFCC catalytic activity and selectivity towards H2O2 production. Furthermore, major technical challenges are presented, and future research directions are proposed to guide further development towards practical application.
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| GB/T 7714 | Zhou, Yue , Chen, Ge , Zhang, Jiujun . A review of advanced metal-free carbon catalysts for oxygen reduction reactions towards the selective generation of hydrogen peroxide [J]. | JOURNAL OF MATERIALS CHEMISTRY A , 2020 , 8 (40) : 20849-20869 . |
| MLA | Zhou, Yue et al. "A review of advanced metal-free carbon catalysts for oxygen reduction reactions towards the selective generation of hydrogen peroxide" . | JOURNAL OF MATERIALS CHEMISTRY A 8 . 40 (2020) : 20849-20869 . |
| APA | Zhou, Yue , Chen, Ge , Zhang, Jiujun . A review of advanced metal-free carbon catalysts for oxygen reduction reactions towards the selective generation of hydrogen peroxide . | JOURNAL OF MATERIALS CHEMISTRY A , 2020 , 8 (40) , 20849-20869 . |
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摘要 ：
Background & Aims: Intrahepatic cholangiocarcinoma (ICC) is the second most common liver malignancy. ICC typically features remarkable cellular heterogeneity and a dense stromal reaction. Therefore, a comprehensive understanding of cellular diversity and the interplay between malignant cells and niche cells is essential to elucidate the mechanisms driving ICC progression and to develop therapeutic approaches. Methods: Herein, we performed single-cell RNA sequencing (scRNA-seq) analysis on unselected viable cells from 8 human ICCs and adjacent samples to elucidate the comprehensive transcriptomic landscape and intercellular communication network. Additionally, we applied a negative selection strategy to enrich fibroblast populations in 2 other ICC samples to investigate fibroblast diversity. The results of the analyses were validated using multiplex immunofluorescence staining, bulk transcriptomic datasets, and functional in vitro and in vivo experiments. Results: We sequenced a total of 56,871 single cells derived from human ICC and adjacent tissues and identified diverse tumor, immune, and stromal cells. Malignant cells displayed a high degree of inter-tumor heterogeneity. Moreover, tumor-infiltrating CD4 regulatory T cells exhibited highly immunosuppressive characteristics. We identified 6 distinct fibroblast subsets, of which the majority were CD146-positive vascular cancer-associated fibroblasts (vCAFs), with highly expressed microvasculature signatures and high levels of interleukin (IL)-6. Functional assays indicated that IL-6 secreted by vCAFs induced significant epigenetic alterations in ICC cells, particularly upregulating enhancer of zeste homolog 2 (EZH2) and thereby enhancing malignancy. Furthermore, ICC cell-derived exosomal miR-9-5p elicited high expression of IL-6 in vCAFs to promote tumor progression. Conclusions: Our single-cell transcriptomic dataset delineates the inter-tumor heterogeneity of human ICCs, underlining the importance of intercellular crosstalk between ICC cells and vCAFs, and revealing potential therapeutic targets. Lay summary: Intrahepatic cholangiocarcinoma is an aggressive and chemoresistant malignancy. Better understanding the complex transcriptional architecture and intercellular crosstalk of these tumors will help in the development of more effective therapies. Herein, we have identified important interactions between cancer cells and cancer-associated fibroblasts in the tumor stroma, which could have therapeutic implications. (C) 2020 European Association for the Study of the Liver. Published by Elsevier B.V.
关键词 ：
Cancer-associated fibroblasts Cancer-associated fibroblasts CD146 CD146 Intrahepatic cholangiocarcinoma Intrahepatic cholangiocarcinoma Single-cell RNA sequencing Single-cell RNA sequencing Tumor heterogeneity Tumor heterogeneity
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| GB/T 7714 | Zhang, Min , Yang, Hui , Wan, Lingfei et al. Single-cell transcriptomic architecture and intercellular crosstalk of human intrahepatic cholangiocarcinoma [J]. | JOURNAL OF HEPATOLOGY , 2020 , 73 (5) : 1118-1130 . |
| MLA | Zhang, Min et al. "Single-cell transcriptomic architecture and intercellular crosstalk of human intrahepatic cholangiocarcinoma" . | JOURNAL OF HEPATOLOGY 73 . 5 (2020) : 1118-1130 . |
| APA | Zhang, Min , Yang, Hui , Wan, Lingfei , Wang, Zhaohai , Wang, Haiyang , Ge, Chen et al. Single-cell transcriptomic architecture and intercellular crosstalk of human intrahepatic cholangiocarcinoma . | JOURNAL OF HEPATOLOGY , 2020 , 73 (5) , 1118-1130 . |
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摘要 ：
The manipulation of central atom coordination environments can greatly boost catalytic performances and promote the understanding of associated mechanisms in both sub-nanometer clusters and atomically dispersed catalysts. In this study, sub-nanometer "raft"-like PtNx clusters were synthesized on a TiO2 support, and the significant enhancement effects of the Pt-N coordination structure on the performance of hydrogen evolution reaction (HER) are demonstrated. In acidic media, the PtNx catalyst display a superior HER activity (37.5 A mg(-1) Pt) and turnover frequencies (37.9H(2) s(-1)) at overpotential of 50 mV; outperforming commercial Pt/C by a factor of 13.3 and 3.9, respectively. Density functional theory (DFT) calculation results reveal that the charge transfer occur from the N to the neighboring Pt atoms when the hydrogen is adsorbed on N atoms; such a charge redistribution within Pt-N coordination structure leads to a smaller H* free energies on the activated N atoms, and is believed to account for the higher HER activity.
关键词 ：
Charge redistribution Charge redistribution Cluster Cluster Electrocatalyst Electrocatalyst Hydrogen evolution reaction Hydrogen evolution reaction Platinum Platinum
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| GB/T 7714 | Cheng, Xing , Lu, Yue , Zheng, Lirong et al. Charge redistribution within platinum-nitrogen coordination structure to boost hydrogen evolution [J]. | NANO ENERGY , 2020 , 73 . |
| MLA | Cheng, Xing et al. "Charge redistribution within platinum-nitrogen coordination structure to boost hydrogen evolution" . | NANO ENERGY 73 (2020) . |
| APA | Cheng, Xing , Lu, Yue , Zheng, Lirong , Cui, Yitao , Niibe, Masahito , Tokushima, Takashi et al. Charge redistribution within platinum-nitrogen coordination structure to boost hydrogen evolution . | NANO ENERGY , 2020 , 73 . |
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