CHINESE JOURNAL OF STRUCTURAL CHEMISTRY
·
2024
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IF 5.9
Limin Wang,Feiyi Huang,Xinyi Liang,Rajkumar Devasenathipathy,Xiaotian Liu,Qiulan Huang,Zhongyun Yang,Dujuan Huang,Xinglan Peng,Du-Hong Chen,Youjun Fan,Wei Chen
Chemical functionalization of graphene is a topic of paramount importance to broaden its applications in chemistry, physics, and biological science but remains a great challenge due to its low chemical activity and poor dispersion. Here, we report a strategy for the photosynergetic electrochemical functionalization of graphene (EFG). By using chloride ion (Cl − ) as the intercalation anions and co-reactants, the electrogenerated radicals confined in the expanded graphite layers enable efficient radical addition reaction, thus grasping crystalline-perfect EFG. We found that the ultraviolet irradiation and applied voltage have increased the surface/interface concentration of Cl • , thus boosting the functionalization of graphene. Theoretical calculation and experimental results verified the oxygen evolution reaction (OER) on EFG has been improved by regulating the doping of chlorine atoms. In addition, the reduced interlayer distance and the enhanced electrostatic repulsion near the basal plane endow the fabricated EFG-based membrane with high salt retention. This work highlights a method for the in situ functionalization of graphene and the subsequent applications in OER and water desalination.
研究领域:
材料科学
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化学工程
·
能源科学
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产品关联
DOI
高影响因子
APPLIED ENERGY
·
2023
·
IF 11.2
Hao Yang,Xihong Zu,Jinxin Lin,Mengnuo Wu,Liheng Chen,Xiaobin Jiang,Zixin Xie,Tongxin Ye,Dongjie Yang,Xueqing Qiu
Antibiotic wastewater has caused serious environmental pollution and is hard to utilize. Thus, it is urgent to develop a green and efficient technology for treating antibiotic wastewater and effective utilization. The reported fuel cell technologies can degrade antibiotics and generate electricity simultaneously, but their cell performance is very bad and difficult application. Herein, we reported a new environment-friendly and low-cost redox flow fuel cell (RFFC) based on the photothermal synergistic effect to convert antibiotic wastewater into electricity directly and efficiently at low temperature. The developed RFFC can output the maximum power density of 98.2 mW cm −2 which is 545 times of the reported microbial fuel cells and 270 times of the reported photocatalytic fuel cells. And the photothermal degradation method is better than the thermal degradation and photo degradation . Furthermore, it can discharge stably >2.5 h at high current density of 2 A cm −2 and successfully power a small electrical fan (1.5 V). The reaction mechanism is studied by the density functional theory (DFT) calculation, and the results show that FeCl 3 molecules as photocatalyst and electron carriers of the RFFC can complex with antibiotics to greatly reduce the energy gap between HOMO and LUMO of antibiotics, which make the antibiotic molecules easy to be excited to unstable excited state by visible and UV light (λ < 733 nm) and greatly beneficial for their photothermal degradation. Besides, when using cefuroxime sodium wastewater as the model wastewater, HS-GC–MS results show that cefuroxime sodium can be completely degraded into non-toxic micro molecules after generating electricity. This work shows promising potential application for high-value utilization of antibiotic wastewater and generating clean electricity.
研究领域:
环境科学
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生物化学
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能源技术
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产品关联
DOI
高影响因子
Nano Energy
·
2023
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IF 17.6
Yawei Jiang,Fenghui Li,Xuhui Li,Wenjian Fang,Xiaodong Si,Tao Zhou,Yulin Min,Yongsheng Liu
The combination of piezoelectric catalysis and photocatalysis has garnered significant attention in the fields of pollutant degradation and water splitting. However, the charge carrier transport property remains unclear due to the difficulty in observing nanocrystal polarization during the reaction process. This study aimed to address this issue by preparing Ba 1−x Sr x TiO 3 (BST) solid solutions using the solid-phase method and examining the effect of ion doping on piezoelectricity-photocatalytic activity. The photocatalysis and local piezoelectric catalysis coupling was evaluated through water decomposition and dye degradation. Interestingly, the introduction of local piezoelectric catalysis had the opposite effect: it reduced photocatalytic hydrogen production but increased the rate of photocatalytic RhB degradation. The possible mechanism was proposed that the different adsorption of H + and radicals on the catalysts would affect the direction of the local piezoelectric potential and then change the photo-generated carriers' transfer path.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
Molecular Catalysis
·
2024
·
IF 3.9
Yan-Bo Cao,Yan-Peng Ye,Wei-wei Dong,Zhi-biao Li,Yi Ding,Wei-li Kong,Xi Wang
Hydrogen, a new energy source that emits no carbon and has a high energy content, has recently attracted significant attention. The CoS 2 /MoS 2 catalyst was produced using a one-step hydrothermal synthesis process. With a current density of 10 mA cm −2 , the CoS 2 /MoS 2 catalyst shows an overpotential of 116.8 mV for the HER under the 300 W Xe lamp's solar simulation, a 23 % improvement over the dark condition. Both the properly prohibited bandwidths of CoS 2 and MoS 2 , which promote the creation of photogenerated carriers and the existence of a p-n junction between them, are responsible for improving the photo-enhanced HER performance. The photoinduced electro-hole pairs' separation is improved by this p-n junction, reducing their likelihood of recombination and thereby enhancing the electrocatalytic ability of the system. This work demonstrates the possibility of photoelectric synergistic enhancement of the electrocatalytic performance of transition metal sulfides.
研究领域:
材料科学
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催化化学
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能源科学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2022
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IF 7.139
Fangke Yu,TianYi Cao,Hongrui Ma,Jing Yang,Liming Jing
This study reported a photoelectric co-catalyst system of jet-flow reactor for efficient mineralization of Bisphenol A (BPA), where H 2 O 2 was photoelectro-generated in situ from O 2 reduction on gas diffusion electrodes fabricated by nitrogen-doped porous carbon and graphitic carbon nitride (NPC/g-C 3 N 4 ). Current density , aeration rate , amount of MoS 2 and FeSO 4 catalyst in the jet-flow reactor photoelectrocatalysis system for BPA removal were investigated. The NPC/g-C 3 N 4 cathodes were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), electron spin resonance (ESR), and the electrochemical workstation. The results show that at pH 7, the NPC/g–C 3 N 4 –(60%) has the highest rate of electrical generation hydrogen peroxide. When the pH rised, at pH values of 7, the cumulative of hydrogen peroxide increased, when the solution get slight alkaline, it was gradually decreased. Compared with the traditional electro-Fenton technology, the photoelectric method of co-catalysis has strong ·OH production rate and high oxidation ability. A possible mechanism for BPA degradation was oxidized by hydroxyl radical (·OH), resulting in the formation of shorter chain bisphenol A (BPA), which followed the same reaction cycle as BPA until it was mineralized. The removal rate of BPA can reach 100% within 20 min, the TOC removal rate up to 90%. This work provides new opinion into the development of a photoelectric collaborative system for H 2 O 2 generation and the fast BPA degradation.
研究领域:
环境科学
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催化化学
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DOI
高影响因子
Small
·
2025
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IF 12.1
Zhenpeng Cheng,Tianle Wang,Junyan Zhu,Yaqi He,Shijie Liu,Ming-Yu Li,Haifei Lu,Xiaoyan Wen,Jihoon Lee,Sisi Liu,Sui Mao
Adaptive learning capability of optoelectronic synaptic hardware holds promising application prospects in next generation artificial intelligence, and the development of biometric retina perception is sternly hampered by three crucial issues, including well-balance between excitatory and inhibitory, non-volatile multi-state storage, and optimal energy consumption. In this work, a novel Cs 2 AgBiBr 6 /ZnO non-volatile optoelectronic synapse is proposed and successfully programmed with optical excitatory and electronic inhibitory in the light of dual-mechanism: Lead-free perovskite Cs 2 AgBiBr 6 guarantees abundant photogenerated carrier concentration, and the process of carrier capture and release occurs in ZnO layer, which can collaboratively modulate various synaptic plasticity behaviors depending on distinct stimulus. Consequently, multi-bit storage is attained with the dual-mechanism non-volatile memory (DNVM) as a function of consecutive light spikes. The energy consumption of the DNVM is 1.85 nJ at a single light spike, and an ultra-low one of 13.8 fJ is triggered with a single electrical pulse, which approximatively meets the requirement of the biological synaptic event energy consumption. The performance of the DNVM is further evaluated with the Pavlov's classical conditioning experiment and visual hardware system, offering an exciting paradigm for implementing on-chip adaptive visual perception and neuromorphic computing.
研究领域:
材料科学
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神经科学
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人工智能
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产品关联
DOI
PubMed
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
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2025
·
IF 4.6
Mingyin Zhu,Yu Wang,Jiake Li,Hedong Jiang,Xin Liu,Pingchun Guo,Hua Zhu,Yanxiang Wang
Photorechargeable supercapacitors were constructed using Mn 2+ - doped ZnCo 2 O 4 as the photoanode, reduced graphene oxide hydrogel (rGH) as the cathode and Zn (CF 3 SO 3 ) 2 as the electrolyte. The physical composition, microstructure, light absorption, chemical structure, and electrochemical performance of the supercapacitors were comprehensively characterized using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HR-TEM), ultraviolet–visible (UV–Vis), X-ray photoelectron spectroscopy (XPS), and electrochemical workstation, respectively. The results show that under the photoelectric synergistic charging conditions (current density of 0.2 A g −1 and light intensity of 95 mW cm −2 ), the specific capacity of the 4 % Mn 2+ -doped ZnCo 2 O 4 //rGH supercapacitor is 256.4 F g −1 , which is 12 % higher than that of the electric charging, and 69 % higher than that of the ZnCo 2 O 4 //rGH supercapacitor. The 4 % Mn 2+ - doped ZnCo 2 O 4 //rGH supercapacitor shows Coulombic efficiency of 100 % for both electric and photoelectric synergistic charging after 10000 cycles, and the capacity retention rate of 78 % and 122 %, respectively, which are 28 % and 22 % higher than that of ZnCo 2 O 4 //rGH supercapacitor at the same conditions, suggesting that the 4 % Mn 2+ - doped ZnCo 2 O 4 //rGH supercapacitor has better photoelectrochemical performance than the ZnCo 2 O 4 //rGH supercapacitor.
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产品关联
DOI
高影响因子
Energy Storage Materials
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2024
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IF 18.9
Ledi Chen,Zaka Ullah,Houliang Sun,Shiwei Yu,Wanting Li,Mingliang Chen,Liwei Liu,Qi Li
Integration of photoactive and lithium storing units into a single cathode endows it with notable capacity in the presence of suitable light. However, the interfacial effect between the two materials causes significant loss of photogenerated electrons during their transfer which is one of the biggest obstacles in the development of current photo-assisted rechargeable batteries. In this paper, a bifunctional cobalt-coordinated organic cathode is fabricated by combining 2,2′-bpy and DHBQ via Co by adopting the spin evaporation technique. It optimizes the pristine interfaces of photoactive and lithium storage units into a photoactive unit-metal interface and a metal-lithium storage unit interface through application of Co. In the presence of light, Co causes a strong metal-ligand charge transfer. Meanwhile, ligand-ligand charge transfer also takes place between the multi-ligands. The synergistic effect of these two phenomena offers a discharge capacity of 387 mAh g -1 which is significantly higher than that of 316 mAh g -1 recorded in the absence of light. The demonstrated design of bifunctional metal-ligand cathode by incorporation of photoactive ligands into lithium storage ligands through applications of metal centers can open the pathways for establishing a new type of photo-assisted lithium-ion batteries with higher efficiency and lower cost.
研究领域:
材料科学
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能源存储技术
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产品关联
DOI
高影响因子
Chinese Physics B
·
2023
·Vol. 32
·期 11
·118101
·
IF 1.7
Yang Yang,Chuanyu Fu,Shuo Ke,Hangyuan Cui,Xiao Fang,Changjin Wan,Qing Wan
Neuromorphic devices that mimic the information processing function of biological synapses and neurons have attracted considerable attention due to their potential applications in brain-like perception and computing. In this paper, neuromorphic transistors with W-doped In2O3 nanofibers as the channel layers are fabricated and optoelectronic synergistic synaptic plasticity is also investigated. Such nanofiber transistors can be used to emulate some biological synaptic functions, including excitatory postsynaptic current (EPSC), long-term potentiation (LTP), and depression (LTD). Moreover, the synaptic plasticity of the nanofiber transistor can be synergistically modulated by light pulse and electrical pulse. At last, pulsed light learning and pulsed electrical forgetting behaviors were emulated in 5 × 5 nanofiber device array. Our results provide new insights into the development of nanofiber optoelectronic neuromorphic devices with synergistic synaptic plasticity.
研究领域:
材料科学
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神经科学
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电子工程
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DOI
高影响因子
Chemical Science
·
2025
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IF 7.4
Sijia Chi,Zhenshen Li,Xunjie Yin,Shuoyi Chen,Xuerui Yi,Yiqiao Wang,Yong Guo,Fangbing Li,Shichao Wu,Quanhong Yang
Harnessing light to drive high-energy batteries is an intriguing goal, yet photoactivity often fails for reasons that have remained elusive, which is starkly exemplified in photo-assisted solid-state lithium-oxygen batteries. Here, we identify photo-shielding by opaque, ionically resistive discharge products as the critical, previously overlooked failure mechanism. This "catalyst blinding" effect not only blocks light but also passivates the electrochemical interface, causing a catastrophic kinetic shutdown. We overcome this limitation with a "hydro-photo-synergy" strategy, using controlled water vapor to shift the solid-state electrochemistry from a 2e− to an efficient 4e− pathway and transform the product into highly transparent, ionically conductive products. This dual optical and electrochemical enhancement sustains photocatalysis for deep and reversible reactions, unlocking a 2-fold increase in accessible capacity, a low overpotential (0.3 V), and outstanding stability (>170 cycles for 34 mAh cm-2). This work establishes in situ product engineering as a new paradigm to unlock high-energy solid-state photo-electrochemical devices.
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
·
IF 8.1
Yanjun Guo,Chuan Cao,Lixia Zheng,Yuxiang Zhong,Pingzhou Duan,Xiang Hu
A MOF-derived carbon/metal oxide composite (Fe/Ce@NPC-600) by doping Ce into NH 2 -MOF-101(Fe) precursor and simple one-step carbonization was fabricated. Fe/Ce@NPC-600 as a floating cathode was innovatively applied to the solar photoelectro-Fenton (SPEF) process to increase the yield of H 2 O 2 and activate it for degradation tetracycline (TC). The characterizations showed that the presence of Ce greatly increased the content of Fe 2+ and photoresponse ability in the material. Thanks to the synergistic effect of Fe and Ce, Fe/Ce@NPC-600 cathode could efficiently degrade TC by 98.2 % within 30 min, and the removal rate of total organic carbon (TOC) was 68.2 %, and the photoelectric synergistic enhancement factor ( f PEF ) was 1.4. Besides, based on machine learning, a XGB model was established to predict electrode performance. The degradation mechanism and pathway of TC were also proposed. Our results inspired the application of floating cathodes, MOF-derived materials and artificial intelligence for advanced oxidation processes for efficient removal of emerging contaminants.
研究领域:
环境科学
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材料科学
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化学工程
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人工智能
✓ 已验证
产品关联
DOI
高影响因子
IEEE TRANSACTIONS ON ELECTRON DEVICES
·
2025
·
IF 3.2
Qian Gao,Gang He,Bo He,Yanmei Liu,Yongli He,Shanshan Jiang,Huanhuan Wei,Can Fu
The development of high-performance neuromorphic phototransistors plays a fundamental role in advancing image perception systems by enabling low-latency, event-driven light sensing and accelerating the training of memory-efficient deep neural networks. Here, artificial synaptic phototransistors with synaptic plasticity are fabricated based on La-doped In2O3 nanofibers (InLaO NFs), demonstrating an integrated artificial synapse that mimics both central and visual neural functions. The device exhibits not only exceptional electrical performance, with a high field-effect mobility of 7.70 cm2V-1s-1, an ultralarge ON/OFF current ratio (>1 × 108), but also a strong photoresponse of 28.2 nA under light illumination. Through excitatory response modes, fundamental biological functions, including excitatory postsynaptic current (EPSC), paired-pulse facilitation (PPF), and the transition from short-term plasticity (STP) to long-term plasticity (LTP), are simulated by the synaptic transistor. Furthermore, in optoelectronic co-modulation, the high synaptic weights enable the device to emulate complex neural learning rules relevant to neuromorphic applications, such as classically conditioned reflexes and image recognition tasks. These results highlight the potential of InLaO NFs-based synaptic transistors as promising candidates for bio-inspired synaptic devices and advanced neuromorphic systems.
研究领域:
神经形态工程
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纳米材料
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光电子学
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人工智能
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合成生物学
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神经科学
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材料科学
·
电气工程
✓ 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）