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Strategically designing and fabricating nitrogen and sulfur Co-doped g-C3N4 for accelerating photocatalytic H2 evolution

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材料科学技术（英文版） 2025年第5期208卷 111-119页

作者： Haitao Wang Lianglang Yu Jiahe Peng Jing Zou Jizhou Jiang School of Chemistry and Environmental Engineering School of Environmental Ecology and Biological EngineeringKey Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationNovel Catalytic Materials of Hubei Engineering Research CenterWuhan Institute of TechnologyWuhan 430205China State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China

Doping engineering is an effective strategy for graphitic carbon nitride(g-C3N4)to improve its photocat-alytic hydrogen evolution reaction(HER)*** this work,a novel nitrogen and sulfur co-doped g-C3N4(N,S-g-C3N4)is elaborately designed on the basis of theoretical predictions of first-principle density functional theory(DFT).The calculated Gibbs free energy of adsorbed hydrogen(ΔGH·)for N,S-g-C3N4 at the N-doping active sites is extremely close to zero(0.01 eV).Inspired by the theoretical predictions,the N,S-g-C3N4 is successfully fabricated through ammonia-rich pyrolysis synthesis strategy,in which ammonia is in-situ obtained by pyrolyzing *** characterizations indicate that the N,S-g-C3N4 possesses high specific surface area,outstanding light utilization,good hydrophilicity,and efficient carrier transfer ***,the N,S-g-C3N4 displays an extremely high H2 evolution rate of 8269.9 μmol g-1 h-1,achieves an apparent quantum efficiency(AQE)of 3.24％,and also possesses outsatnding *** calculations further demonstrate that N and S dopants can not only introduce doping energy level to reduce the band gap,but also induce charge redistribution to facilitate hydrogen adsorption,thus promoting the photocatalytic HER ***,femtosecond transient absorption(fs-TA)spectroscopy further corroborates the efficient photogenerated carrier transport of N,*** research highlights a promising and reliable strategy to achieve superior photocatalytic activity,and exhibits significant guidance for precise designing high-efficiency photocatalysts.

关键词： Theoretical predictions g-C3N4 N and S co-doping Photocatalytic H2 evolution

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A low-cost wide bandgap polymer based on carboxylate substituted thiazole enables efficient organic solar cells with remarkable batch-to-batch reproducibility

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Science China Chemistry 2025年第2期68卷 733-744页

作者： Xiaodong Zhu Yuchen Lei Jianhong Gao Yanjun He Jinsicheng Liu Qian Guo Xiang Gao Liwei Xiong Xunchang Wang Renqiang Yang Zhitian Liu Hubei Engineering Technology Research Center of Optoelectronic and New Energy Materials Hubei Key Laboratory of Plasma Chemistry and Advanced MaterialsSchool of Materials Science and EngineeringWuhan Institute of TechnologyWuhan 430205China Key Laboratory of Optoelectronic Chemical Materials and Devices(Ministry of Education) School of Optoelectronic Materials&TechnologyJianghan UniversityWuhan 430056China

Constructing the low-cost,high-efficiency,and good batch-to-batch reproducibility polymer donor is vitally important for the application of organic solar ***,we develop a structurally simple carboxylate-substituted thiazole as an electronwithdrawing building block to construct a low-cost polymer,PBTTzE,containing a facilely prepared chlorinated benzo[1,2-b:4,5-b′]dithiophene(BDTCl)donor *** from synergistic electron deficient effects of chlorination and ester group and C=N,as well as the noncovalent interaction of S…O and S…N,PBTTzE exhibits a deep HOMO energy level(−5.59 eV),and a planar skeleton *** combined with the IT-4F acceptor,the polymer(54 kDa)demonstrated a champion PCE of 15.87%,which is the highest value in the IT-4F-based binary devices to ***,PBTTzE exhibits excellent batch-tobatch reproducibility due to its very similar PCEs within a range of 43–76 *** addition,an alloyed state and complementary absorption can be formed between PM6 and ***,in a ternary device with PBTTzE added to the PM6:BTP-eC9 blend,a top PCE of 18.76%is achieved due to the suppressed energy loss,prolonged exciton diffusion distance,and improved charge *** work demonstrates that the carboxylate-substituted thiazole is a highly promising acceptor unit for constructing low-cost and high-performance polymers.

关键词： carboxylate substituted thiazole polymer donor low-cost batch-to-batch reproducibility organic solar cells

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Viscous Flow Activation Energy and Short-Term Aging Resistance of SBS-Modified Asphalt Enhanced by PPA Oil-Grinding Activated MoS_(2)

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Fluid Dynamics & Materials Processing 2025年第2期21卷 387-404页

作者： Shun Chen Yingjie Wang Xingyang He Ying Su Yingyuan Pan Yimin Cao Wentian Wang Chao Yang Bo Jiang Shaolin Zhang School of Civil Engineering Architecture and EnvironmentHubei University of TechnologyWuhan430068China Building Waterproof Engineering and Technology Research Center of Hubei Province Hubei University of TechnologyWuhan430068China Key Laboratory of Intelligent Health Perception and Ecological Restoration of Rivers and Lakes Ministry of EducationHubei University of TechnologyWuhan430068China China Construction Third Bureau First Engineering Co. Ltd.China

Styrene-butadiene-styrene(SBS)modified asphalt(SA)has long found effective applications in road construction *** combined with fillers,SBS-modified asphalt has demonstrated promising resistance to fatigue cracking caused by temperature fluctuations and *** this study,molybdenum disulfide(MoS_(2))and polyphosphoric acid(PPA)were ground in naphthenic oil(NO)and subjected to mechanical activation to create PPAmodified MoS_(2),referred to as *** blending various ratios of OMS-PPA with SBS-modified asphalt,composite-modified asphalts were successfully developed to enhance their overall *** assess the mechanical characteristics and stability of these modified asphalts,various methods were employed,including penetration factor,flow activation energy,fluorescence microscopy,and dynamic shear ***,the short-term aging performance was evaluated using Fourier transform infrared(FTIR)spectroscopy and nanoindentation *** results revealed a 3.7%decrease in the penetration-temperature coefficient for SAOMS compared to SA,while 1-SA-OMS-PPA showed an even greater reduction of 7.1%.Furthermore,after short-term aging,carboxyl group generation in SA increased by 5.93%,while SA-OMS exhibited a smaller rise of 1.36%,and 1-SA-OMS-PPA saw an increase of just 0.93%.The study also highlighted significant improvements in the hardness of these *** hardness change ratio for SA-OMS decreased by 43.08%,while the ratio for 1-SA-OMS-PPA saw a notable reduction of 65.16% compared to unmodified *** findings suggest that OMS-PPA contributed to improvements in temperature sensitivity,particle dispersibility,and resistance to shortterm aging in *** results hold significant promise for the future development of advanced asphalt-based materials with potential high-value applications in flexible pavements for highways.

关键词： Composite-modified asphalt grinding viscous flow activation energy short-term aging collaborated

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Optical vortex arrays in a multimode silicon waveguide

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Optics Letters 2025年第8期50卷 2743-2746页

作者： Li, Yunlong Wang, Kaiyuan S., Zhang T., Wu D., Liu S., Zheng M., Zhang School of Optical and Electronic Information Huazhong University of Science and Technology Wuhan Hubei430074 China National Engineering Research Center for Next Generation Internet Access System Wuhan Hubei430074 China Optics Valley Laboratory Wuhan Hubei430074 China Hubei Optical Fundamental Research Center Wuhan430074 China

The immense potential of optical vortex arrays (OVAs) has been validated in applications such as particle manipulation, optical imaging, metrology, quantum, and optical communication. Photonic integrated technology has provided a powerful platform for the manipulation of vortex beams, which has the advantages of compact footprint, high controllability, and flexibility. However, since vortex beams are not eigenmodes of rectangular optical waveguides, the on-chip generation of in-plane OVAs has not been reported yet. Here, we propose a controlled method to generate in-plane OVAs by superimposing polarizationmultiplexed modes in multimode silicon waveguides. Based on the proposed method, two distinct types of OVAs can be flexibly generated over an ultra-wide optical bandwidth. One exhibits opposite topological charge directions between adjacent vortices (vortex-antivortex), which are achieved by superimposing the fundamental transverse magnetic (TM0) mode with the i-order transverse electric (TEi) mode. The other shows consistent topological charge directions between neighboring vortices, which is realized by superimposing the i-order transverse magnetic (TMi) mode with the TEi mode. By controlling the phase of modes and waveguide width, the topological charge, transmission state, and quantity of vortex beams can be flexibly adjusted. © 2025 Optica Publishing Group.

关键词： Photonic devices

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Utilization of River Snail Shells as Formaldehyde Absorbents 6

Utilization of River Snail Shells as Formaldehyde Absorbents

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2024 6th International Conference on Advanced Materials and Ecological Environment, AMEE 2024

作者： Tan, Xiaofeng Tian, Chao Li, Wenyi Yu, Xinrui School of Material Science and Chemical Engineering Hubei University of Technology Hubei Wuhan430068 China The Research Center of Circular Economy Development in Hubei Hubei University of Technology Hubei Wuhan430068 China

This study addresses aquaculture waste management challenges by proposing a pollution control and resource utilization strategy through the calcination of discarded river snail shells (RSC) at different temperatures for formaldehyde absorption. The findings indicate that calcining RSC at 900°C transforms the material into calcium oxide with a porous structure, resulting in excellent adsorption capacity. Formaldehyde adsorption tests show that RSC calcined at both 900°C and 1000°C perform well in adsorption, with the 900°C calcined RSC demonstrating optimal effectiveness considering both economic and energy-saving factors. This approach presents an innovative solution for enhancing indoor air quality by incorporating shell powder into surface coatings. © Published under licence by IOP Publishing Ltd.

关键词： Air quality

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Stability and Stabilization of Sampled-Data Based LFC for Power Systems:A Data-Driven Method

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IEEE/CAA Journal of Automatica Sinica 2025年第1期12卷 291-293页

作者： Yu-Long Fan Chuan-Ke Zhang Yong He the School of Automation China University of Geosciences the Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems the Engineering Research Center of Intelligent Technology for Geo-Exploration Ministry of Education IEEE

Dear Editor,This letter is concerned with stability analysis and stabilization design for sampled-data based load frequency control(LFC) systems via a data-driven method. By describing the dynamic behavior of LFC systems based on a data-based representation, a stability criterion is derived to obtain the admissible maximum sampling interval(MSI) for a given controller and a design condition of the PI-type controller is further developed to meet the required MSI. Finally, the effectiveness of the proposed methods is verified by a case study.

关键词： Sampled data control systems

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Identifying the dynamic behaviors in complete reconstruction of Co-based complex precatalysts during electrocatalytic oxygen evolution

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Journal of Energy Chemistry 2025年第1期100卷 226-233页

作者： Jingfang Zhang Danyang Wu Linke Cai Youluan Lu Fanpeng Cheng Lijuan Shi Qun Yi Yao Liu Yi Huang Key Laboratory of Green Chemical Engineering Process of Ministry of Education Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationHubei Key Laboratory of Novel Reactor and Green Chemical TechnologySchool of Chemical Engineering&PharmacyWuhan Institute of TechnologyWuhan 430205HubeiChina Key Laboratory of Pesticide&Chemical Biology of Ministry of Education Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction of Ministry of EducationCollege of ChemistryCentral China Normal UniversityWuhan 430079HubeiChina College of Materials Science and Engineering Fuzhou UniversityFuzhou 350108FujianChina

Transition metal-based nanomaterials have emerged as promising electrocatalysts for oxygen evolution reaction(OER).Considerable research efforts have shown that self-reconstruction occurs on these nanomaterials under operating conditions of OER ***,most of them undergo incomplete reconstruction with limited thickness of reconstruction layer,leading to low component utilization and arduous exploration of real catalytic ***,we identify the dynamic behaviors in complete reconstruction of Co-based complexes during *** hollow phytic acid(PA)cross-linked CoFe-based complex nanoboxes with porous nanowalls are designed because of their good electrolyte penetration and mass transport ability,in favor of the fast and complete reconstruction.A series of experiment characterizations demonstrate that the reconstruction process includes the fast substitution of PA by OH-to form Co(Fe)(OH)xand subsequent potential-driven oxidation to Co(Fe)*** obtained CoFeOOH delivers a low overpotential of 290 mV at a current density of 10 mA cm^(-2)and a long-term *** experiment results together with theory calculations reveal that the Fe incorporation can result in the electron rearrangement of reconstructed CoFeOOH and optimization of their electronic structure,accounting for the enhanced OER *** work provides new insights into complete reconstruction of metal-based complexes during OER and offers guidelines for rational design of high-performance electrocatalysts.

关键词： Complete reconstruction Co-based complex Precatalysts Oxygen evolution reaction

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Enhanced Anti-aging Performance of SBSMA Based on SBS Pre-swelling/Extraction Process and Blending with C9

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Journal of Wuhan University of technology(Materials Science) 2025年第2期40卷 589-598页

作者： CHEN Wei FAN Shifa HE Xingyang SU Ying YANG Chao ZHOU Han TANG Dakun DONG Bo School of Civil Engineering Architecture and EnvironmentHubei University of TechnologyWuhan 430068China Building Waterproof Engineering and Technology Research Center of Hubei Province Hubei University of TechnologyWuhan 430068China Key Laboratory of Intelligent Health Perception and Ecological Restoration of Rivers and Lakes Ministry of EducationHubei University of TechnologyWuhan 430068China China Railway 11 Bureau Group Co.Ltd. Wuhan 430061China

The effects of styrene-butadiene-styrene(SBS)pre-swelling/extraction process and the incorporation of C9 petroleum resin on the anti-aging performance of modified asphalt were systematically evaluated by characterizing the physical indexes,chemical compositions and rheological *** experimental results show that the SBS pre-swelling/extraction process and the incorporation of C9 petroleum resin improve the dispersion performance of SBS in asphalt as well as the strength of SBS polymer network structures,and the synergistic effects decrease the volatilization degree of asphalt lightweight components and the degradation rate of SBS during the aging *** anti-aging performance of SBS modified asphalt(SBSMA)was significantly enhanced by SBS pre-swelling/extraction process compounded with the incorporation of C9 petroleum resin,and the anti-aging effect was gradually enhanced with the increase of C9 petroleum resin content.

关键词： pre-swelling/extraction process SBS copolymer C9 petroleum resin anti-aging performance

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Optimizing polylactic acid:synthesis,properties,and regulatory strategies for food packaging applications

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Frontiers of Chemical Science and engineering 2025年第3期19卷 69-97页

作者： Peng Sun Kelan Liu Cunjun Dong Li Yan Hongyan Zhu Mingliang Fang Donglei Fu Xinghai Liu Wuhan Hongzhicai Printing Co. Ltd.Wuhan 430040China Hubei Engineering Technology Research Center of Spectrum and Imaging Instrument Electronic Information SchoolWuhan UniversityWuhan 430072China

Polylactic acid,a biodegradable polymer derived from renewable resources,is increasingly used in food packaging due to its transparency,renewability,and food ***,its mechanical properties,heat resistance,and barrier performance present significant challenges that limit its ***,there is a lack of comprehensive literature addressing methods to optimize polylactic acid’s performance for various food packaging ***,this review provides an overview of polylactic acid production processes,including the synthesis of lactic acid and lactide,as well as methods such as polycondensation and ring-opening *** critically examine the advantages and limitations of polylactic acid in various food packaging contexts,focusing on strategies to enhance its mechanical properties,barrier performance against oxygen and water vapor,surface hydrophobicity,thermal stability,and resistance to ultraviolet ***,we summarize recent advancements in polylactic acid applications for food packaging,highlighting innovations in antioxidant,antimicrobial,and freshness indicator *** developments underscore the significant potential of polylactic acid in the food packaging sector and offer valuable insights for future research directions.

关键词： polylactic acid,biodegradable packaging materials,mechanical property,barrier property,food packaging applications

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Very high cycle fatigue resistance improvement of Mg-Gd-Zn-Zr alloy by introducing curved long-period stacking ordered lamellae

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Journal of Magnesium and Alloys 2025年第3期13卷 1218-1231页

作者： Min Zhan Xinglin Yang Shoucheng Shi Yao Chen Lang Li Bing Xue Yongbo Li Wanshuang Yi Qingyuan Wang Chao He Key Laboratory of Deep Earth Science and Engineering Ministry of EducationCollege of Architecture and EnvironmentSichuan UniversityChengdu 610065China Failure Mechanics&Engineering Disaster Prevention and Mitigation Key Laboratory of Sichuan ProvinceSichuan UniversityChengdu 610065China Science and Technology Research Center China Yangtze Power Corp(CYPC)Yichang Hubei 443002China Hubei Technology Innovation Center for Smart Hydropower Wuhan Hubei 430000China School of Architecture and Civil Engineering Chengdu UniversityChengdu 610106China

Magnesium alloys with long-period stacking ordered(LPSO)structures are known for their impressive static mechanical strength,but the consistent occurrence of slip-cracking along the LPSO lamellae,which do not effectively impede the movement of basal dislocations,has prompted concerns about their very high cycle fatigue(VHCF)*** this study,an extruded Mg-Gd-Zn-Zr alloy was developed,showcasing exceptional VHCF resistance due to its bimodal structure comprisingﬁne grains and coarse grains consisting of curved LPSO *** investigation on the crack initiation mechanism revealed that slip-induced cracking predominantly occurs inﬁne-grained regions rather than in the interior of coarse *** extrusion process aligns the basal planes of most coarse grains parallel to the axial direction,and the presence of curved LPSO lamellae acts as barriers to the movement of basal dislocations,thereby effectively increasing the threshold for slip-cracking along the basal ***,fatigue damage manifests in the form of slip bands and micro-cracks within the interior ofﬁne grains,ultimately resulting in fatigue crack initiation,propagation andﬁnal fracture.

关键词： Very high cycle fatigue Mg-Gd-Zn-Zr alloy Crack initiation Curved LPSO lamellae Micro-cracks

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