Yiting Xu

Xiamen University

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Lizong Dai

Xiamen University

Birong Zeng

Jilin University

Conghui Yuan

Xiamen University

Guorong Chen

Shanghai University

Juguo Dai

Xiamen University

Chuanluan Guo

Xiamen University

Lili Luo

Guiyang Medical University

Lizong Dai

Xiamen University

He Liu

Research Institute of Petroleum Exploration and Development

Weiang Luo

Xiamen University

Cooperative Institutions

Xiamen University

State Council of the People's Republic of China

Xiamen University of Technology

Chinese Academy of Sciences

Jilin University

Chongqing University of Technology

East China University of Science and Technology

Chinese Academy of Medical Sciences & Peking Union Medical College

University of Chinese Academy of Sciences

National University of Singapore

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Self-activatable carbon nanotube@ruthenium-catechol coordination complex for hydrogen evolution reaction

Nanotechnology (2022)

Chenzhi Wu Tong Wu Zhenbin Tang Juguo Dai Birong Zeng

We report a simple metal ion-catechol coordination strategy to coat ruthenium-catechol polymer complex (TAC-Ru) on the surface of carbon nanotubes (CNT) to form a core-shell structure (abbreviated as CNT@TAC-Ru). This is achieved by firstly polymerizing catechol and boronic acid monomers on the surface of CNT to form a boronate ester polymer (BP) shell. Then, Ru3+is used to etch the BP shell, and cleave the dynamic boronate ester bond, leading to the formation of a CNT@ruthenium-catechol coordination complex based on the coordinative efficiency of the catechol group. The electrocatalytic property of the CNT@TAC-Ru composite can be activated through electrochemical cycling treatment. The as-activated CNT@TAC-Ru exhibits evidently improved hydrogen evolution reaction (HER) performance with an overpotential of 10 mV in 1.0 M KOH at a current density of 10 mA cm-2, which is better than that of commercial Pt/C (32 mV). And the long-term stability is also desirable. This work provides a pyrolysis-free method to form metal-polymer-carbon composite with high HER performance under the alkaline condition.

Catechol

Overpotential

10.1088/1361-6528/ac7b34

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Broad Spectral Photodetectors Based on Biocl@Boronate Polymer Core-Shell Heterojunctions

Wenkang Wei Haiyan Zuo Yu Luo Chunying Yang Hailong Chen

BiOCl has been actively explored as a promising material for photodetectors (PDs), but inefficient charge separation and narrow response spectral range limit the further development of BiOCl-based PDs. Herein, we show that coating BiOCl with a boronate polymer (BP) shell may provide a simple route to overcome the above limitations. The migration of Bi3+ from BiOCl to BP changes the energy level and enhances the light absorption of BP shell. Violent coordination at the core-shell interface, as well as Bi3+ migration induces the generation of Bi3+-O·-Bi3+ defects. Also, BP shell can reduce the darkcurrent of BiOCl@BPs PDs. The optimized PD assembled with BiOCl@BP1.9 (the subscript represents the shell thickness) shows fast photoresponse (rise time: 32, decay time: 52 ms, respectively), high on/off ratio, and responsivity of 119.77 μA/W under 365 nm light at 15 V. Moreover, BiOCl@BP PDs exhibit a gradually broadened spectral response range with the increase of BP shell thickness and show much higher photodetection performances. For example, under 940 nm light stimulation, the optimized PD (BiOCl@BP20.1) exhibits a high responsivity of 22.18 μA/W, 28 times that of BP PD. Our findings may provide a guideline for the design of high-performance PDs based on the precise construction of polymer-inorganic heterostructures.

10.2139/ssrn.4423157

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Correction: Novel azobenzene-based amphiphilic copolymers: synthesis, self-assembly behavior and multiple-stimuli-responsive properties

RSC Advances (2018)

Yiting Xu Jie Cao Qi Li Jilu Li Kaiwei He

[This corrects the article DOI: 10.1039/C8RA01660G.].

Azobenzene

10.1039/c8ra90036a

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Ultra-stretchable and anti-freezing conductive organohydrogel reinforced with ionic clusters for wearable strain sensors

Sensors and Actuators B Chemical (2022)

Chuanluan Guo Aoqi Zhu Xiaohong Wang Juguo Dai Lili Luo

Carboxymethyl cellulose

10.1016/j.snb.2022.131796

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Interfacial Engineering of Heterogeneous Mo2c-Mo Nanocomposite Embedded in N, S-Doped Carbon Matrix for Enhanced Alkaline Hydrogen Evolution

SSRN Electronic Journal (2022)

Xiaohong Wang Long Xia Chuanluan Guo Lili Luo Juguo Dai

Interfacial engineering of cost-effective non-noble materials is attractive for synthesizing advanced electrocatalysts toward hydrogen evolution reaction (HER). Herein, we prepare N, S-doped Mo 2 C-Mo/C heterogeneous nanorods (NSMB-1.25) with abundant active heterointerfaces and defect sites via in situ polymerization and carburization strategy. The polyaniline-derived heteroatom-doped carbon acts not only as a matrix but also as a carbon source for Mo 2 C formation. The phase transition of Mo 2 C-Mo heterostructure is accurately regulated by delicately varying the dosage of polymerization initiator and calcine temperature. The synergistic effects of Mo 2 C, metallic Mo and N, S doping carbon significantly enhance the HER activity and durability of nanorods. Benefiting from the plentiful active sites of the Mo 2 C-Mo heterointerfaces, fast charge and mass transfer channels, heteroatomic doping and large surface area, the as-prepared NSMB-1.25 nanorods deliver only 118 mV overpotential at 10 mA cm -2 current density, small Tafel slopes of 74.38 mV dec -1 , high exchange current density of 25.84 Â´ 10 -2 mA cm -2 and excellent stability in 1.0 M KOH solution. This work may support a feasible strategy to the rational design of high-active heterogeneous carbon-based electrocatalysts for efficient energy conversion and storage.

Carbon fibers

Matrix (chemical analysis)

10.2139/ssrn.4224033

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A facile brushing method for constructing all-in-one high performance flexible supercapacitor with ordinary carbon materials

Journal of Energy Storage (2023)

Zhangfeng Wu Chuanluan Guo Zhenwu Lu Conghui Yuan Yiting Xu

Carbon fibers

10.1016/j.est.2023.107531

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Citations (6)

Kinetics control over the Schiff base formation reaction for fabrication of hierarchical porous carbon materials with tunable morphology for high-performance supercapacitors

Nanotechnology (2021)

Ling Liu Yuntong Li Zhenwu Lu Ting Chen Qipeng Cai

Abstract Schiff base formation reaction is highly dynamic, and the microstructure of Schiff base polymers is greatly affected by reaction kinetics. Herein, a series of Schiff base cross-linked polymers (SPs) with different morphologies are synthesized through adjusting the species and amount of catalysts. Nitrogen/oxygen co-doped hierarchical porous carbon nanoparticles (HPCNs), with tunable morphology, specific surface area (SSA) and porosity, are obtained after one-step carbonization. The optimal sample (HPCN-3) possesses a coral reef-like microstructure, high SSA up to 1003 m 2 g −1 , and a hierarchical porous structure, exhibiting a remarkable specific capacitance of 359.5 F g −1 (at 0.5 A g −1 ), outstanding rate capability and cycle stability in a 1 M H 2 SO 4 electrolyte. Additionally, the normalized electric double layer capacitance (EDLC) and faradaic capacitance of HPCN-3 are 0.239 F m −2 and 10.24 F g −1 respectively, certifying its superior electrochemical performance deriving from coral reef-like structure, high external surface area and efficient utilization of heteroatoms. The semi-solid-state symmetrical supercapacitor based on HPCN-3 delivers a capacitance of 55 F g −1 at 0.5 A g −1 , good cycle stability of 86.7% after 5000 GCD cycles at 10 A g −1 , and the energy density ranges from 7.64 to 4.86 Wh kg −1 .

Specific surface area

Carbon fibers

10.1088/1361-6528/abf59d

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Citations (2)