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JOURNAL ARTICLE
Chongyang Tang, Cong Wei, Yanyan Fang, Bo Liu, Xianyin Song, Zenan Bian, Xuanwei Yin, Hongbo Wang, Zhaohui Liu, Gongming Wang, Xiangheng Xiao, Xiangfeng Duan
Electrochemical hydrogenation of acetonitrile based on well-developed proton exchange membrane electrolyzers holds great promise for practical production of ethylamine. However, the local acidic condition of proton exchange membrane results in severe competitive proton reduction reaction and poor selection toward acetonitrile hydrogenation. Herein, we conduct a systematic study to screen various metallic catalysts and discover Pd/C exhibits a 43.8% ethylamine Faradaic efficiency at the current density of 200 mA cm-2 with a specific production rate of 2912...
April 15, 2024: Nature Communications
#2
JOURNAL ARTICLE
Chengzhang Wan, Yansong Ling, Sibo Wang, Heting Pu, Yu Huang, Xiangfeng Duan
The Tafel slope represents a critical kinetic parameter for mechanistic studies of electrochemical reactions, including the hydrogen evolution reaction (HER). Linear fitting of the polarization curve in a N2 -saturated electrolyte is commonly used to determine Tafel slopes, which is, however, frequently plagued with inconsistencies. Our systematic studies reveal that the Tafel slopes derived from this approach are loading- and potential-dependent, and could substantially exceed the theoretical limits. Our analyses indicate that this discrepancy is largely attributed to the locally trapped HER-generated H2 in the catalyst layer...
March 27, 2024: ACS Central Science
#3
JOURNAL ARTICLE
Aamir Hassan Shah, Zisheng Zhang, Chengzhang Wan, Sibo Wang, Ao Zhang, Laiyuan Wang, Anastassia N Alexandrova, Yu Huang, Xiangfeng Duan
The fundamental understanding of sluggish hydrogen evolution reaction (HER) kinetics on a platinum (Pt) surface in alkaline media is a topic of considerable debate. Herein, we combine cyclic voltammetry (CV) and electrical transport spectroscopy (ETS) approaches to probe the Pt surface at different pH values and develop molecular-level insights into the pH-dependent HER kinetics in alkaline media. The change in HER Tafel slope from ∼110 mV/decade in pH 7-10 to ∼53 mV/decade in pH 11-13 suggests considerably enhanced kinetics at higher pH...
March 27, 2024: Journal of the American Chemical Society
#4
JOURNAL ARTICLE
Dehui Zhang, Dong Xu, Yuhang Li, Yi Luo, Jingtian Hu, Jingxuan Zhou, Yucheng Zhang, Boxuan Zhou, Peiqi Wang, Xurong Li, Bijie Bai, Huaying Ren, Laiyuan Wang, Ao Zhang, Mona Jarrahi, Yu Huang, Aydogan Ozcan, Xiangfeng Duan
Nonlinear optical processing of ambient natural light is highly desired for computational imaging and sensing. Strong optical nonlinear response under weak broadband incoherent light is essential for this purpose. By merging 2D transparent phototransistors (TPTs) with liquid crystal (LC) modulators, we create an optoelectronic neuron array that allows self-amplitude modulation of spatially incoherent light, achieving a large nonlinear contrast over a broad spectrum at orders-of-magnitude lower intensity than achievable in most optical nonlinear materials...
March 18, 2024: Nature Communications
#5
JOURNAL ARTICLE
Jialing Liu, Si Wan, Bo Li, Bailing Li, Jingyi Liang, Ping Lu, Zucheng Zhang, Wei Li, Xin Li, Ying Huangfu, Ruixia Wu, Rong Song, Xiangdong Yang, Chang Liu, Ruohao Hong, Xiangfeng Duan, Jia Li, Xidong Duan
The reduced dimensionality and interfacial effects in magnetic nanostructures open the feasibility to tailor magnetic ordering. Here, we report the synthesis of ultrathin metallic Co2 Si nanoplates with a total thickness that is tunable to 2.2 nm. The interfacial magnetism coupled with the highly anisotropic nanoplate geometry leads to strong perpendicular magnetic anisotropy and robust hard ferromagnetism at room temperature, with a Curie temperature ( T C ) exceeding 950 K and a coercive field ( H C ) > 4...
March 13, 2024: Nano Letters
#6
JOURNAL ARTICLE
Rongli Liu, Ziyang Wei, Lele Peng, Leyuan Zhang, Arava Zohar, Rachel Schoeppner, Peiqi Wang, Chengzhang Wan, Dan Zhu, Haotian Liu, Zhaozong Wang, Sarah H Tolbert, Bruce Dunn, Yu Huang, Philippe Sautet, Xiangfeng Duan
The sulfur reduction reaction (SRR) plays a central role in high-capacity lithium sulfur (Li-S) batteries. The SRR involves an intricate, 16-electron conversion process featuring multiple lithium polysulfide intermediates and reaction branches1-3 . Establishing the complex reaction network is essential for rational tailoring of the SRR for improved Li-S batteries, but represents a daunting challenge4-6 . Herein we systematically investigate the electrocatalytic SRR to decipher its network using the nitrogen, sulfur, dual-doped holey graphene framework as a model electrode to understand the role of electrocatalysts in acceleration of conversion kinetics...
February 2024: Nature
#7
REVIEW
Shengqi Wang, Junying Xue, Dong Xu, Jing He, Yongping Dai, Tingyi Xia, Yu Huang, Qiyuan He, Xiangfeng Duan, Zhaoyang Lin
Electrochemical molecular intercalation of layered semiconducting crystals with organic cations followed by ultrasonic exfoliation has proven to be an effective approach to producing a rich family of organic/inorganic hybrid superlattices and high-quality, solution-processable 2D semiconductors. A traditional method for exfoliating 2D crystals relies on the intercalation of inorganic alkali metal cations. The organic cations (e.g., alkyl chain-substituted quaternary ammonium cations) are much larger than their inorganic counterparts, and the bulky molecular structure endows distinct intercalation and exfoliation chemistry, as well as molecular tunability...
July 31, 2023: Nature Protocols
#8
JOURNAL ARTICLE
Enbo Zhu, Yang Liu, Jin Huang, Ao Zhang, Bosi Peng, Zeyan Liu, Haotian Liu, Jiaji Yu, Yan-Ruide Li, Lili Yang, Xiangfeng Duan, Yu Huang
Extensive macroscale two-dimensional (2-D) platinum (Pt) nanowire network (NWN) sheets are created through a hierarchical self-assembly process with the aid of biomolecular ligands. The Pt NWN sheet is assembled from the attachment growth of 1.9 nm-sized 0-D nanocrystals into 1-D nanowires featuring a high density of grain boundaries, which then interconnect to form monolayer network structures extending into centimeter-scale size. Further investigation into the formation mechanism reveals that the initial emergence of NWN sheets occurs at the gas/liquid interfaces of the bubbles produced by sodium borohydride (NaBH4 ) during the synthesis process...
July 6, 2023: ACS Nano
#9
JOURNAL ARTICLE
Chengzhang Wan, Zisheng Zhang, Juncai Dong, Mingjie Xu, Heting Pu, Daniel Baumann, Zhaoyang Lin, Sibo Wang, Jin Huang, Aamir Hassan Shah, Xiaoqing Pan, Tiandou Hu, Anastassia N Alexandrova, Yu Huang, Xiangfeng Duan
In analogy to natural enzymes, an elaborated design of catalytic systems with a specifically tailored local chemical environment could substantially improve reaction kinetics, effectively combat catalyst poisoning effect and boost catalyst lifetime under unfavourable reaction conditions. Here we report a unique design of 'Ni(OH)2 -clothed Pt-tetrapods' with an amorphous Ni(OH)2 shell as a water dissociation catalyst and a proton conductive encapsulation layer to isolate the Pt core from bulk alkaline electrolyte while ensuring efficient proton supply to the active Pt sites...
June 22, 2023: Nature Materials
#10
JOURNAL ARTICLE
Yang Liu, Enbo Zhu, Jin Huang, Ao Zhang, Aamir Hassan Shah, Qingying Jia, Mingjie Xu, Ershuai Liu, Qiang Sun, Xiangfeng Duan, Yu Huang
Periodic assembly of heterogeneous nanoparticles provides a strategy for integrating distinct nanocatalyst blocks where their synergic effects can be explored for diverse applications. To achieve the synergistic enhancement, an intimate clean interface is preferred which however is usually plagued by the bulky surfactant molecules used in the synthesis and assembly process. Herein, we showed the creation of one-dimensional Pt-Au nanowires (NWs) with periodic alternating Pt and Au nanoblocks, by assembling Pt-Au Janus nanoparticles with the assistance of peptide T7 (Ac-TLTTLTN-CONH2 )...
March 27, 2023: Nano Letters
#11
JOURNAL ARTICLE
Xiaoyang Fu, Dongfang Cheng, Chengzhang Wan, Simran Kumari, Hongtu Zhang, Ao Zhang, Huaixun Huyan, Jingxuan Zhou, Huaying Ren, Sibo Wang, Zipeng Zhao, Xun Zhao, Jun Chen, Xiaoqing Pan, Philippe Sautet, Yu Huang, Xiangfeng Duan
Hydrazine-assisted water electrolysis offers a feasible path for low-voltage green hydrogen production. Herein, the design and synthesis of ultrathin RhRu0.5 -alloy wavy nanowires as bifunctional electrocatalysts for both the anodic hydrazine oxidation reaction (HzOR) and the cathodic hydrogen evolution reaction (HER) is reported. It is shown that the RhRu0.5 -alloy wavy nanowires can achieve complete electrooxidation of hydrazine with a low overpotential and high mass activity, as well as improved performance for the HER...
March 21, 2023: Advanced Materials
#12
JOURNAL ARTICLE
Xiangdong Yang, Jia Li, Rong Song, Bei Zhao, Jingmei Tang, Lingan Kong, Hao Huang, Zhengwei Zhang, Lei Liao, Yuan Liu, Xiangfeng Duan, Xidong Duan
Two-dimensional (2D) semiconductors such as molybdenum disulfide (MoS2 ) have attracted tremendous interest for transistor applications. However, the fabrication of 2D transistors using traditional lithography or deposition processes often causes undesired damage and contamination to the atomically thin lattices, partially degrading the device performance and leading to large variation between devices. Here we demonstrate a highly reproducible van der Waals integration process for wafer-scale fabrication of high-performance transistors and logic circuits from monolayer MoS2 grown by chemical vapour deposition...
May 2023: Nature Nanotechnology
#13
REVIEW
Yifei Luo, Mohammad Reza Abidian, Jong-Hyun Ahn, Deji Akinwande, Anne M Andrews, Markus Antonietti, Zhenan Bao, Magnus Berggren, Christopher A Berkey, Christopher John Bettinger, Jun Chen, Peng Chen, Wenlong Cheng, Xu Cheng, Seon-Jin Choi, Alex Chortos, Canan Dagdeviren, Reinhold H Dauskardt, Chong-An Di, Michael D Dickey, Xiangfeng Duan, Antonio Facchetti, Zhiyong Fan, Yin Fang, Jianyou Feng, Xue Feng, Huajian Gao, Wei Gao, Xiwen Gong, Chuan Fei Guo, Xiaojun Guo, Martin C Hartel, Zihan He, John S Ho, Youfan Hu, Qiyao Huang, Yu Huang, Fengwei Huo, Muhammad M Hussain, Ali Javey, Unyong Jeong, Chen Jiang, Xingyu Jiang, Jiheong Kang, Daniil Karnaushenko, Ali Khademhosseini, Dae-Hyeong Kim, Il-Doo Kim, Dmitry Kireev, Lingxuan Kong, Chengkuo Lee, Nae-Eung Lee, Pooi See Lee, Tae-Woo Lee, Fengyu Li, Jinxing Li, Cuiyuan Liang, Chwee Teck Lim, Yuanjing Lin, Darren J Lipomi, Jia Liu, Kai Liu, Nan Liu, Ren Liu, Yuxin Liu, Yuxuan Liu, Zhiyuan Liu, Zhuangjian Liu, Xian Jun Loh, Nanshu Lu, Zhisheng Lv, Shlomo Magdassi, George G Malliaras, Naoji Matsuhisa, Arokia Nathan, Simiao Niu, Jieming Pan, Changhyun Pang, Qibing Pei, Huisheng Peng, Dianpeng Qi, Huaying Ren, John A Rogers, Aaron Rowe, Oliver G Schmidt, Tsuyoshi Sekitani, Dae-Gyo Seo, Guozhen Shen, Xing Sheng, Qiongfeng Shi, Takao Someya, Yanlin Song, Eleni Stavrinidou, Meng Su, Xuemei Sun, Kuniharu Takei, Xiao-Ming Tao, Benjamin C K Tee, Aaron Voon-Yew Thean, Tran Quang Trung, Changjin Wan, Huiliang Wang, Joseph Wang, Ming Wang, Sihong Wang, Ting Wang, Zhong Lin Wang, Paul S Weiss, Hanqi Wen, Sheng Xu, Tailin Xu, Hongping Yan, Xuzhou Yan, Hui Yang, Le Yang, Shuaijian Yang, Lan Yin, Cunjiang Yu, Guihua Yu, Jing Yu, Shu-Hong Yu, Xinge Yu, Evgeny Zamburg, Haixia Zhang, Xiangyu Zhang, Xiaosheng Zhang, Xueji Zhang, Yihui Zhang, Yu Zhang, Siyuan Zhao, Xuanhe Zhao, Yuanjin Zheng, Yu-Qing Zheng, Zijian Zheng, Tao Zhou, Bowen Zhu, Ming Zhu, Rong Zhu, Yangzhi Zhu, Yong Zhu, Guijin Zou, Xiaodong Chen
Humans rely increasingly on sensors to address grand challenges and to improve quality of life in the era of digitalization and big data. For ubiquitous sensing, flexible sensors are developed to overcome the limitations of conventional rigid counterparts. Despite rapid advancement in bench-side research over the last decade, the market adoption of flexible sensors remains limited. To ease and to expedite their deployment, here, we identify bottlenecks hindering the maturation of flexible sensors and propose promising solutions...
March 28, 2023: ACS Nano
#14
JOURNAL ARTICLE
Xun Guan, Sevcan Erşan, Xiangchen Hu, Timothy L Atallah, Yongchao Xie, Shengtao Lu, Bocheng Cao, Jingwen Sun, Ke Wu, Yu Huang, Xiangfeng Duan, Justin R Caram, Yi Yu, Junyoung O Park, Chong Liu
Integrating light-harvesting materials with microbial biochemistry is a viable approach to produce chemicals with high efficiency from the air, water, and sunlight. Yet it remains unclear whether all absorbed photons in the materials can be transferred through the material-biology interface for solar-to-chemical production and whether the presence of materials beneficially affect the microbial metabolism. Here we report a microbe-semiconductor hybrid by interfacing CO2 /N2 -fixing bacterium Xanthobacter autotrophicus with CdTe quantum dots for light-driven CO2 and N2 fixation with internal quantum efficiencies of 47...
November 2022: Nature Catalysis
#15
JOURNAL ARTICLE
Qi Qian, Zhong Wan, Hiroyuki Takenaka, Jong K Keum, Tyler J Smart, Laiyuan Wang, Peiqi Wang, Jingyuan Zhou, Huaying Ren, Dong Xu, Yu Huang, Yuan Ping, Xiangfeng Duan
The success of the lead halide perovskites in diverse optoelectronics has motivated considerable interest in their fundamental photocarrier dynamics. Here we report the discovery of photocarrier-induced persistent structural polarization and local ferroelectricity in lead halide perovskites. Photoconductance studies of thin-film single-crystal CsPbBr3 at 10 K reveal long-lasting persistent photoconductance with an ultralong photocarrier lifetime beyond 106 s. X-ray diffraction studies reveal that photocarrier-induced structural polarization is present up to a critical freezing temperature...
January 26, 2023: Nature Nanotechnology
#16
JOURNAL ARTICLE
Biao Qin, Muhammad Zeeshan Saeed, Qiuqiu Li, Manli Zhu, Ya Feng, Ziqi Zhou, Jingzhi Fang, Mongur Hossain, Zucheng Zhang, Yucheng Zhou, Ying Huangfu, Rong Song, Jingmei Tang, Bailing Li, Jialing Liu, Di Wang, Kun He, Hongmei Zhang, Ruixia Wu, Bei Zhao, Jia Li, Lei Liao, Zhongming Wei, Bo Li, Xiangfeng Duan, Xidong Duan
Most of the current methods for the synthesis of two-dimensional materials (2DMs) require temperatures not compatible with traditional back-end-of-line (BEOL) processes in semiconductor industry (450 °C). Here, we report a general BiOCl-assisted chemical vapor deposition (CVD) approach for the low-temperature synthesis of 27 ultrathin 2DMs. In particular, by mixing BiOCl with selected metal powders to produce volatile intermediates, we show that ultrathin 2DMs can be produced at 280-500 °C, which are ~200-300 °C lower than the temperatures required for salt-assisted CVD processes...
January 19, 2023: Nature Communications
#17
JOURNAL ARTICLE
Pengfei Hu, Haosen Yang, Shulin Chen, Yufeng Xue, Qiaonan Zhu, Mengyao Tang, Hua Wang, Li-Min Liu, Peng Gao, Xiangfeng Duan, Lin Guo
Compared with layered materials such as graphite and transitional metal dichalcogenides with highly anisotropic in-plane covalent bonds, freestanding metallic two-dimensional (2D) films with atomic thickness are intrinsically more difficult to achieve. The omnidirectional nature of typical metallic bonds prevents the formation of highly anisotropic atomically thin metallic layers. Herein, we report a ligand regulation strategy to stabilize monoatomic platinum layers by forming a unique lamellar superlattice structure with self-assembled organic ligand layers...
December 22, 2022: Journal of the American Chemical Society
#18
JOURNAL ARTICLE
Haijuan Du, Mengyuan Yue, Xin Huang, Gaigai Duan, Zhihui Yang, Weihan Huang, Wenjie Shen, Xiangfeng Yin
In this study, ZnO nanoparticles were prepared by a hydrothermal method with varying the reaction times, material ratios and reaction temperatures. The samples were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray Diffraction (XRD) and Fourier infrared spectroscopy (FTIR). It was shown that the material ratio significantly affected the structure and morphology of the synthesized ZnO nanoparticles, and then the uneven nano-octahedral structure, uniform nano-octahedral structure, nano-tubular structure, and nano-sheet structure could be obtained successively...
November 9, 2022: Nanomaterials
#19
JOURNAL ARTICLE
Laiyuan Wang, Peiqi Wang, Jin Huang, Bosi Peng, Chuancheng Jia, Qi Qian, Jingyuan Zhou, Dong Xu, Yu Huang, Xiangfeng Duan
The miniaturization of silicon-based electronics has motivated considerable efforts in exploring new electronic materials, including two-dimensional semiconductors and halide perovskites, which are usually too delicate to maintain their intrinsic properties during the harsh device fabrication steps. Here we report a convenient plug-and-probe approach for one-step simultaneous van der Waals integration of high-k dielectrics and contacts to enable top-gated transistors with atomically clean and electronically sharp dielectric and contact interfaces...
November 2022: Nature Nanotechnology
#20
JOURNAL ARTICLE
Lihong Li, Xiaoxia Yu, Zhaoyang Lin, Zhenren Cai, Yawei Cao, Wei Kong, Zhongyuan Xiang, Zhengkun Gu, Xianran Xing, Xiangfeng Duan, Yanlin Song
Two-dimensional (2D) semiconductor crystals offer the opportunity to further extend Moore's law to the atomic scale. For practical and low-cost electronic applications, directly printing devices on substrates is advantageous compared to conventional microfabrication techniques that utilize expensive photolithography, etching, and vacuum metallization processes. However, the currently printed 2D transistors are plagued by unsatisfactory electrical performance, thick semiconductor layers, and low device density...
September 20, 2022: Advanced Materials
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