Science China-Chemistry
·
2025
·
IF 9.7
Bai Rui,Li Junpeng,Chen Wei,He Yi,Zhou Xudong,Tian Xiaochun,Ren Chongyuan,Chen Liqi,Xiao Yong,Zhao Feng
The integration of microorganisms and photosensitizers presents a promising approach to chemical production utilizing solar energy. However, the current system construction process remains complex. Herein, we introduce a straightforward and efficient solar-to-chemical conversion system that combines the dissolved photosensitizer Eosin Y with the non-photosynthetic bacterium Moorella thermoacetica . Under light radiation, acetate production increased to 5.1 µM h −1 µM −1 catalyst, exceeding the previously reported maximum by 5.9-fold, with a quantum efficiency of 17.6%. The soluble photosensitizer EY can penetrate the cell and directly engage in intracellular energy metabolism, significantly enhancing intracellular ATP and NADPH/NADP + levels. Within this biohybrid system, sacrificial agent triethanolamine played a dual role: (1) providing continuous photoelectron generation by Eosin Y, enhancing intracellular reducing power, and facilitating carbon fixation via the Wood-Ljungdahl pathway; and (2) its oxidation product, formaldehyde, served as a critical intermediate and a direct precursor for methylenete-trahydrofolate in the Wood-Ljungdahl pathway, consequently simplifying reaction steps and markedly boosting acetate yield. This study provides a simple microorganism-photosensitizer biohybrid system to produce acetate and light on the multifaceted roles of sacrificial agents, paving the development of efficient solar energy conversion with nonphotosynthetic bacteria.
研究领域:
微生物学
·
生物能源
·
合成生物学
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产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Xiaoshuang Zhou,Mingxia Li,Xiaoting Cao,Xu Dong,Shaoli Fang,Lvzhou Li,Ningyi Yuan,Jianning Ding,Ray H. Baughman
Yarn artificial muscles offer an exciting avenue to replicate the extraordinary efficiency of biological muscles, converting chemical energy directly into mechanical work. Nevertheless, realizing the chemical-mechanical energy conversion has posed significant challenges. In this study, a novel approach for harnessing direct catalysis to power yarn artificial muscles within a one-compartment aqueous system is introduced. This research distinguishes itself through an innovative actuation mechanism using nanoscale catalytic particles. These nanoparticles synthesized and integrated onto the yarn surface act as a chemical trigger for muscle actuation. Notably, the resulting yarn muscle demonstrates a reversible tensile stroke of nearly 4% in ≈20 s. By bridging the gap between chemical catalysis and mechanical performance, this study paves the way for innovative applications in fields ranging from robotics to biomedical devices.
研究领域:
材料科学
·
生物工程
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Yuyang Han,Bing Lu,Changxiang Shao,Tong Xu,Qianwen Liu,Yuan Liang,Xuting Jin,Jian Gao,Zhipan Zhang
Devices that convert ambient energy into electricity and simultaneously store it for future usage are highly desirable. Herein, we have designed a hygroelectric power generator with energy self-storage ability (HPGES) by hybridizing a moist-electric energy harvester with a supercapacitor, thus achieving the conversion of chemical energy into electricity and the storage of electric energy at the same time. An array of ten HPGES devices are able to deliver a voltage output of 2 V and adequately drive a commercial calculator.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2018
·
IF 4.61
Linsen Li,Jinhua Li,Jing Bai,Qingyi Zeng,Ligang Xia,Yan Zhang,Shuai Chen,Qunjie Xu,Baoxue Zhou
Toxic and refractory organic pollutants are continually discharged into the water environment, which has become the crisis for the human living and sustainable development. However, organic pollutants also contain large amounts of chemical energy. In this paper, we studied the effect and mechanism of organic pollutants oxidation and chemical energy conversion for neutral wastewater via strengthening reactive oxygen species (ROS) of HO and O 2 − in a photocatalytic fuel cell (PFC) system, since ROS has the power to oxidize or even mineralize the organics and is environment-friendly to treat refractory organic pollutants. In our PFC system, the HO was enhanced by the cyclic radical chain reaction via the addition of Fe 2+ and tetrapolyphosphate (TPP), while O 2 − was enhanced by setting an additional bias voltage at the anode which was favorable to O 2 production. The results show that the HO and O 2 − concentration are highly enhanced, showing 8.28 and 8.99 times those of traditional PFC, respectively. Meanwhile, the degradation rate constant is remarkably increased by 6.52 times when methylene blue is used as a model pollutant. Furthermore, the performance of wastewater PFC is so improved that the short-circuit current density ( J sc ) and maximum power density ( J V max ) have been increased by a factor of 9.05 and 12.67 times in the same experiment, respectively.
研究领域:
环境科学
·
化学工程
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产品关联
DOI
PubMed
高影响因子
ACS Catalysis
·
2018
·
IF 11.384
Yizhou Wu,Jesse Ward-Bond,Donglin Li,Shaohua Zhang,Jiafu Shi,Zhongyi Jiang
Graphitic carbon nitride (g-C3N4) is an emergent metal-free photocatalyst because of its band position, natural abundance, and facile preparation. Synergetic intensification of charge generation and charge transfer of g-C3N4 to increase solar-to-chemical efficiency remains a hot yet challenging issue. Herein, a nanoshell with two moieties of α-Fe2O3 and carbon (C) is in situ formed on the surface of a g-C3N4 core through calcination of Fe3+/polyphenol-coated melamine, thus acquiring g-C3N4@α-Fe2O3/C core@shell photocatalysts. The α-Fe2O3 moiety acts as an additional photosensitizer, offering more photogenerated electrons, whereas the C moiety bridges a “highway” to facilitate the electron transfer either from α-Fe2O3 moiety to g-C3N4 or from g-C3N4 to C moiety. By tuning the proportion of these two moieties in the nanoshell, a photocurrent density of 3.26 times higher than pristine g-C3N4 is obtained. When utilized for photocatalytic regeneration of reduced nicotinamide adenine dinucleotide (NADH, a dominant cofactor in biohydrogenation reaction), g-C3N4@α-Fe2O3/C exhibits an equilibrium NADH yield of 76.3% with an initial reaction rate (r) of 7.7 mmol h–1 g–1, among the highest r for photocatalytic NADH regeneration ever reported. Manipulating the coupling between charge generation and charge transfer may offer a facile, generic strategy to improve the catalytic efficiency of a broad range of photocatalysts other than g-C3N4.
研究领域:
材料科学
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光化学
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催化
·
纳米技术
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2017
·
IF 3.582
Juntao Liu,Yang Nan,Xiaoxin Chang,Xinzhe Li,Yiyun Fang,Yang Liu,Yu Tang,Xiang Wang,Rong Li,Jiantai Ma
Abundant metal oxides and their composites have attracted great interest in the application of electrochemical energy conversion and storage. In this work, we obtain a hybrid material of FeCo 2 O 4 nanoparticles anchored on hierarchical nitrogen-enriched porous carbon material (denoted as FeCo 2 O 4 @NPC-450 °C) and study its activity for oxygen evolution reaction (OER). NPC-450 °C is prepared by carbonizing a Schiff-base network (SNW) and SNW is melamine-based material own high nitrogen content and rigid molecular backbone. Compared with FeCo 2 O 4 and NPC-450 °C, FeCo 2 O 4 @NPC-450 °C hybrid exhibits remarkable OER performance with a small over potential of mere 330 mv at a current density of 10 mA cm −2 and a small Tafel slope of 50 mV dec −1 . Electrochemical measurements also show that FeCo 2 O 4 @NPC-450 °C present stability for at least 25 h in alkaline solutions. FeCo 2 O 4 @NPC-450 °C shows good performance for OER raises the possibility for cheap and easily prepared catalyst to replace precious metal catalysts .
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2025
·
IF 5.5
Mingzhu Wang,Shuyu Yue,Xingyun Zhao,Yaoyan Wu,Yaohui Zhang,Yaqian Dong,Tiehua Ma
Developing highly efficient and durable trifunctional electrocatalysts is essential for advancing technologies related to water splitting, oxygen reduction, and hydrogen storage, which are critical for energy conversion and storage. In this study, we encapsulated Co-MOFs on the surface of Mo2C hollow spheres and achieved the Co@NC/Mo2C composite material through high-temperature annealing. In the optimal catalyst, Co@NC/Mo2C-0.1, Co@NC nanosheets were uniformly distributed on the Mo2C hollow spheres, and the BET surface area was well maintained. Compared to Co nanoparticles, Co-Nx in Co@NC/Mo2C-0.1 exhibited a greater modulation effect on the electronic structure of Mo2C. Density functional theory (DFT) calculations showed that the Co@NC/Mo2C heterostructure effectively lowered the energy barrier for the hydrogen evolution reaction (HER) on Mo2C and enhanced the performance of the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) through electronic coupling. Specifically, for Co@NC/Mo2C-0.1, at a current density of 10 mA cm–2, the half-wave potential for ORR was 0.86 V, the overpotential for OER was 349 mV, and the overpotential for HER was 158 mV. Additionally, this catalyst exhibited exceptional stability across all three reactions, making it an ideal candidate for sustainable energy technologies.
研究领域:
材料科学
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电化学
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能源技术
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Smart and Nano Materials
·
2025
·
IF 6.6
Jiefeng Gong,Zhiyuan Huang,Huihuang Yu,Hongmingzhe He,Yige Xiong,Longqiu Li,Guanhua Zhang,Guangyu Zhang
High-precision three-dimensional (3D) printing has enabled the fabrication of architected microlattices with complex geometries and tunable functionalities, offering new opportunities for electrochemical energy storage devices. In particular, 3D polymer octet-truss lattice frameworks exhibit exceptional mechanical robustness, structural regularity, and customizable porosity, making them promising candidates for electrode applications. However, current fabrication techniques often face challenges in achieving the required precision and structural integrity for advanced applications. In this study, projection micro stereolithography (PμSL) was utilized to fabricate high-resolution 3D electrode substrates based on octet-truss microlattices. The printed structures were systematically optimized for both mechanical stability and printing accuracy. Electrochemical plating and magnetron sputtering were employed as surface modification techniques to improve the physicochemical characteristics of the lattices and introduce lithium-affinitive functionality. The resulting 3D microlattice electrodes demonstrate high structural precision and enhanced electrochemical performance, highlighting their strong potential for integration into advanced lithium metal batteries and related energy storage systems.
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Rihui Liang,Maoxin Zhang,Teng Qiu,Bo Yuan,Cong Peng,Wei Feng
Azo-based photoswitchable molecules can undergo configurational transformations by tuning the wavelength of incident light, thereby enabling efficient energy storage. Polymer-based solid–solid phase change materials are capable of storing and releasing thermal energy through surroundings temperature regulation without experiencing macroscopic morphological changes. There is growing interest in constructing hybrid systems that enable synergistic collection and release of energy in thermal management systems. Herein, a series of meta -azopyridine compounds with electron-donating and electron-withdrawing groups are synthesized, the azopyridine derivative with the highest energy density can reach up to 312 J g −1 . Meanwhile, polyethylene glycol is employed as the phase change component to synthesize solid–solid phase change polyurethanes featuring robust mechanical properties and favorable shape stability. Most importantly, a flexible energy-storage device is innovatively integrated employs the above-mentioned two systems, capable of coharvesting photon and phase change energy reaching up to 388 J g −1 . The temperature regulation capability of the devices through the storage and release of photothermal and phase change energy is demonstrated as a thermal-insulation material, showing potential application in external thermal-insulation aspects for transport pipelines.
研究领域:
材料科学
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能量存储
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高分子科学
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光化学
·
热管理
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产品关联
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-12
·
IF 14.7
Ren Yuqi,Fu Yiwei,Li Naixu,You Changjun,Huang Jie,Huang Kai,Sun Zhenkun,Zhou Jiancheng,Si Yitao,Zhu Yuanhao,Chen Wenshuai,Duan Lunbo,Liu Maochang
H 2 O dissociation plays a crucial role in solar-driven catalytic CO 2 methanation, demanding high temperature even for solar-to-chemical conversion efficiencies <1% with modest product selectivity. Herein, we report an oxygen-vacancy (V o ) rich CeO 2 catalyst with single-atom Ni anchored around its surface V o sites by replacing Ce atoms to promote H 2 O dissociation and achieve effective photothermal CO 2 reduction under concentrated light irradiation. The high photon flux reduces the apparent activation energy for CH 4 production and prevents V o from depletion. The defects coordinated with single-atom Ni, significantly promote the capture of charges and local phonons at the Ni d -impurity orbitals, thereby inducing more effective H 2 O activation. The catalyst presents a CH 4 yield of 192.75 µmol/cm 2 /h, with a solar-to-chemical efficiency of 1.14% and a selectivity ~100%. The mechanistic insights uncovered in this study should help further the development of H 2 O-activating catalysts for CO 2 reduction and thereby expedite the practical utilization of solar-to-chemical technologies.
研究领域:
催化
·
太阳能
·
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2021
·Vol. 32
·期 15
·2111125
·
IF 18.808
Binyao Liu,Jinyan Du,Gaili Ke,Bi Jia,Yujie Huang,Huichao He,Yong Zhou,Zhigang Zou
g -C 3 N 4 photocatalysis is a safe and green approach for H 2 O 2 production, but the activity of pristine g -C 3 N 4 photocatalysts is unsatisfactory. At present, most of the modifications on g -C 3 N 4 photocatalysts for H 2 O 2 production have focused on thermodynamic processes, few have considered the kinetic aspects. Herein, the surface N -hydroxymethylation of g -C 3 N 4 photocatalysts for the efficient kinetic production of H 2 O 2 is reported. Through the reaction of formaldehyde with the amino moieties (–NH 2 ) on the g -C 3 N 4 surface, N -hydroxymethyls groups (-NH-CH 2 -OH) are introduced on typical g -C 3 N 4 photocatalysts. Relative to the pristine g -C 3 N 4 photocatalysts, the modified g -C 3 N 4 photocatalysts have over 1280% higher activity for H 2 O 2 production in pure water system, and impressive solar-to-chemical conversion efficiency. The experimental investigations and theoretical calculations reveal that the introduction of -NH-CH 2 -OH on the g -C 3 N 4 photocatalysts does not change their morphology, light absorption intensity and edges, band positions, charge separation and transfer properties, but markedly improved the H 2 O dehydrogenation and O 2 adsorption properties of g -C 3 N 4 . As a result, the reduction kinetics of O 2 to H 2 O 2 on the g -C 3 N 4 photocatalysts with -NH-CH 2 -OH is more energetically favorable. This work provides a useful reference and inspiration to achieve the effective modification of g -C 3 N 4 or other metal-free photocatalysts from the kinetic perspective.
研究领域:
光催化
·
材料科学
·
化学动力学
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可再生能源
·
环境化学
✓ 已验证
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2023
·
IF 13.6
Meixuan Wu,Yaning Zhang,Yuyan Yi,Baocheng Zhou,Pengfei Sun,Xiaoping Dong
Recently, friction-induced tribocatalysis has received tremendous attention through converting mechanical energy to chemical energy. However, its efficiency is much lower than those of photocatalysis and piezocatalysis, and its environmental application is limited in dye degradation. Herein, we developed a facile approach to improve the tribocatalytic activity of Bi 2 WO 6 via adding trace polymer powders to form friction pairs with Bi 2 WO 6 . Among various polymers, PTFE was demonstrated to be the best counterpart of Bi 2 WO 6 . Subsequently, the PTFE dosage, stirring rate, magnetic bar size and number, and stirring mode were further optimized. The PTFE-promoted Bi 2 WO 6 tribocatalysis was verified to possess excellent performance not only for removing different dyes, but also for degrading chlorophenols that are typical persistent organic pollutants . Multiple uses of the recycled catalysts indicated its good stability and prominent tribocatalytic durability. EPR measurements suggested the generation of hydroxyl radical and superoxide radical, which were determined to be continuously generated within 12 h at the rates of 0.88 μM h −1 and 85 μM h −1 , respectively. Subsequently, a possible mechanism was proposed to explain the enhanced performance of the PTFE-promoted Bi 2 WO 6 tribocatalysis. Finally, on basis of the detected intermediates, the degradation pathways of Rhodamine B and 2,4-Dichlorophenol during tribocatalysis were suggested.
研究领域:
环境科学
·
催化
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材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）