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A bifunctional wood membrane modified by MoS_(2)/covalent organic framework heterojunctions for effective solar-driven water evaporation and contaminant degradation

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Science China Chemistry 2024年第6期67卷 2111-2120页

作者： ziwei cui Jianfei Wu Haoran Li Yaning Xu Tiantian Wu Lixing Kang Qing Huang Yahui Cai Jianzhang Li Dan Tian Co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Materials Science and EngineeringNanjing Forestry UniversityNanjing210037China Key Laboratory of Multifunctional Nanomaterials and Smart Systems Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou215123China State Key Laboratory of Efficient Production of Forest Resources Beijing Forestry UniversityBeijing100083China

Interfacial solar evaporation technology is considered one of the most promising strategies for alleviating the scarcity of freshwater resources.However,solar-driven evaporation technology cannot eliminate the pollutants in the residual wastewater.To solve this problem,we have prepared a two-in-one solar-driven evaporation/photocatalysis system by decorating MoS_(2)/covalent organic framework(COF)heterojunctions on wood(MoS_(2)/COF-wood).Thanks to the unique porous structure of wood,it provides a strong guarantee for water transport and vapor release during the evaporation process.The introduction of MoS_(2) and COFs can promote the breaking of hydrogen bonds between water molecules,which leads to a significant decrease in the enthalpy of evaporation,achieving a water evaporation rate as high as 2.17 kg m^(-2)h^(-1)under 1 sun irradiation.Meanwhile,the resulting MoS_(2)/COF-wood exhibits good salt resistance and reusability.In addition,the heterojunctions formed between COFs and MoS_(2) can effectively inhibit charge carrier complexation and improve the photocatalytic degradation ability of pollutants(over 99%).This study highlights the construction strategy of bifunctional wood-based materials for freshwater production and wastewater remediation.

关键词： covalent organic framework MoS_(2) wood photocatalysis solar-driven evaporation

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A bifunctional wood membrane modified by MoS/covalent organic framework heterojunctions for effective solar-driven water evaporation and contaminant degradation

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Science China Chemistry 2024年

作者： ziwei cui Jianfei Wu Haoran Li Yaning Xu Tiantian Wu Lixing Kang Qing Huang Yahui Cai Jianzhang Li Dan Tian State Key Laboratory of Efficient Production of Forest Resources Beijing Forestry University Key Laboratory of Multifunctional Nanomaterials and Smart Systems Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of Sciences Co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Materials Science and EngineeringNanjing Forestry University

Interfacial solar evaporation technology is considered one of the most promising strategies for alleviating the scarcity of freshwater resources. However, solar-driven evaporation technology cannot eliminate the pollutants in the residual wastewater.To solve this problem, we have prepared a two-in-one solar-driven evaporation/photocatalysis system by decorating MoS2/covalent organic framework (COF) heterojunctions on wood (MoS2/COF-wood). Thanks to the unique porous structure of wood, it provides a strong guarantee for water transport and vapor release during the evaporation process. The introduction of MoS2and COFs can promote the breaking of hydrogen bonds between water molecules, which leads to a significant decrease in the enthalpy of evaporation, achieving a water evaporation rate as high as 2.17 kg m-2h-1under 1 sun irradiation. Meanwhile,the resulting MoS2/COF-wood exhibits good salt resistance and reusability. In addition, the heterojunctions formed between COFs and MoS2can effectively inhibit charge carrier complexation and improve the photocatalytic degradation ability of pollutants (over 99%). This study highlights the construction strategy of bifunctional wood-based materials for freshwater production and wastewater remediation.

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Flexible,durable,and anti-fouling nanocellulose-based membrane functionalized by block copolymer with ultra-high flux and efficiency for oil-in-water emulsions separation

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Nano Research 2023年第4期16卷 5665-5675页

作者： Jianfei Wu Yuxuan Su ziwei cui Yang Yu Jiafu Qu Jundie Hu Yahui Cai Jianzhang Li Dan Tian Qichun Zhang Co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037China School of Materials Science and Engineering Suzhou University of Science and TechnologySuzhou 215009China Department of Materials Science and Engineering&Center of Super-Diamond and Advanced Films(COSDAF) City University of Hong KongHong Kong 999077China

The clearwater obtained from stabilized oily wastewater has become a worldwide challenge.Nowdays,the area of oil/water emulsion separation materials have accomplished great progress,but still faces the enormous problems of low flux,poor stability,and pollution resistance.Nanocelluloses(cellulose nanocrystals(CNC))with the advantages of hydrophilicity,ecofriendliness,and regeneration are ideal materials for the construction of separation membranes.In this paper,a flexible,antifouling,and durable nanocellulose-based membrane functionalized by block copolymer(poly(N-isopropylacrylamide)-b-poly(N,Ndimethylaminoethyl methacrylate))is prepared via chemical modification and self-assembly,showing high separation efficiency(above 99.6%)for stabilized oil-in-water emulsions,excellent anti-fouling and cycling stability,high-temperature resistance,and acid and alkali resistance.More importantly,the composite membrane has ultra-high flux in separating oil-in-water emulsions(29,003 L·m^(−2)·h^(−1)·bar^(−1))and oil/water mixture(51,444 L·m^(−2)·h^(−1)·bar^(−1)),which ensures high separation efficiency.With its durability,easy scale-up,and green regeneration,we envision this biomass-derived membrane will be an alternative to the existing commercial filter membrane in environmental remediation.

关键词： nanocellulose-based membrane oil/water emulsions separation ultra-high flux good durability anti-fouling property

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微波响应型CMF@CoS2/MoS2催化剂的制备及其用于木质素蒸气的催化重整

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化学学报 2024年第6期82卷 596-603页

作者：付祎帅王文亮苗晖陈育彤崔洋怡王紫薇潘佳文肖国伟陕西科技大学轻工科学与工程学院(柔性电子学院)轻化工程国家级实验教学示范中心

本研究以Anderson型多金属氧酸盐（NH4）3[CoMo6O24H6]·6H2O为前驱体,采用一步水热法制备微波响应型CMF@CoS2/MoS2催化剂.当微波频率为2.45 GHz时,催化剂拥有良好的微波吸收性能（介电损耗正切角值0.23）,证明了其拥有优异的微波响应能... 详细信息

本研究以Anderson型多金属氧酸盐（NH4）3[CoMo6O24H6]·6H2O为前驱体,采用一步水热法制备微波响应型CMF@CoS2/MoS2催化剂.当微波频率为2.45 GHz时,催化剂拥有良好的微波吸收性能（介电损耗正切角值0.23）,证明了其拥有优异的微波响应能力.木质素蒸气微波辅助催化解聚（MACD）实验表明,CMF@CoS2/MoS2显著提高了单酚产率（59.30%）和苯酚选择性（24.69%）.多物理场耦合分析表明,CMF@CoS2/MoS2由于其优异的微波吸收性,能够通过“热点效应”增强局部反应温度,使木质素蒸气（570℃）吸附于高温CoS2/MoS2活性组分（910℃）表面进一步促进其催化重整.本工作开发的新型微波响应型CMF@CoS2/MoS2催化剂为从木质素炼制高价值酚类平台化合物提供了新的途径.

关键词：木质素微波单酚苯酚催化剂

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Tailored multifunctional hydrazine derivatives for efficient printable hole-conductive-free mesoscopic perovskite solar cells via enhancing defect passivation

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Journal of Energy Chemistry 2024年第8期95卷 357-363页

作者： Minghao Xia ziwei Zheng Yanjie Cheng Chaoyang Wang Zhaozhen cui Guodong Zhang Jinwei Gonga Anyi Mei Hongwei Han Michael Gr?tzel Center for Mesoscopic Solar Cells Wuhan National Laboratory for Optoelectronics Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education Huazhong University of Science and Technology Key Laboratory of Flexible Electronics(KLoFE) & Institute of Advanced Materials(IAM) School of Flexible Electronics(Future Technologies) Nanjing Tech University (NanjingTech)

The low-cost and easy large-scale fabrication advantages of printable mesoscopic perovskite solar cells(p-MPSCs) are overshadowed by their limited photovoltaic conversion efficiency(PCE). Here, we introduce the hydrazide derivative of 4-Hydroxybenzoylhydrazine(4-HBH) to improve the PCE of p-MPSCs by inducing enhanced defect passivation. Both carbonyl and hydrazine groups in hydrazide groups present strong interaction with perovskite. The hydroxyl group, as an electron donor group, increases the electron cloud density of the hydrazide group in 4-HBH under the conjugation of the benzene ring,and thus enhances its interaction with perovskite. Additionally, the hydroxy group itself interacts with perovskite and passivates defects synergistically. The hydrazine agents can also reduce I2and suppress the loss of iodine in perovskite films, which inhibits the formation of iodine-related defects.Consequently, p-MPSCs with 4-HBH achieve a high PCE of 19.21%, and present well improved stability.

关键词： Conjugation redox activity Cooperative coordination Multifunctional hydrazine derivatives Printable mesoscopic perovskite solar cells

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Dietary supplementation of benzoic acid and essential oils combination enhances intestinal resilience against LPS stimulation in weaned piglets

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Journal of Animal Science and Biotechnology 2024年第2期15卷 878-897页

作者： Chang cui Yulong Wei Yibo Wang Wen Ma Xiaoyu Zheng Jun Wang ziwei Ma Caichi Wu Licui Chu Shihai Zhang Wutai Guan Fang Chen Guangdong Provincial Key Laboratory of Animal Nutrition Control College of Animal ScienceSouth China Agricultural UniversityGuangzhou 510642China College of Animal Science and National Engineering Research Center for Breeding Swine Industry South China Agricultural UniversityGuangzhou 510642China Guangdong Laboratory for Lingnan Modern Agriculture South China Agricultural UniversityGuangzhou 510642China

Background The benefits of combining benzoic acid and essential oils(BAO)to mitigate intestinal impairment during the weaning process have been well established,while the detailed underlying mechanism has not been fully elucidated.Previous research has primarily focused on the reparative effects of BAO on intestinal injury,while neglecting its potential in enhancing intestinal stress resistance.Methods In this study,we investigated the pre-protective effect of BAO against LPS-induced stress using a modified experimental procedure.Piglets were pre-supplemented with BAO for 14 d,followed by a challenge with LPS or saline to collect blood and intestinal samples.Results Our findings demonstrated that BAO supplementation led to significant improvements in piglets’final weight,average daily gain,and feed intake/body gain ratio.Additionally,BAO supplementation positively influenced the composition of intestinal microbiota,increasing beneficial Actinobacteriota and Alloprevotella while reducing harmful Desulfobacterota,Prevotella and Oscillospira.Furthermore,BAO supplementation effectively mitigated oxidative disturbances and inflammatory responses induced by acute LPS challenge.This was evidenced by elevated levels of T-AOC,SOD,and GSH,as well as decreased levels of MDA,TNF-α,and IL-6 in the plasma.Moreover,piglets subjected to LPS challenge and pre-supplemented with BAO exhibited significant improvements in intestinal morphological structure and enhanced integrity,as indicated by restored expression levels of Occludin and Claudin-1 compared to the non-supplemented counterparts.Further analysis revealed that BAO supplementation enhanced the jejunal antioxidative capacity by increasing GSH-Px levels and decreasing MDA levels under the LPS challenge and stimulated the activation of the Nrf2 signaling pathway.Additionally,the reduction of TLR4/NF-κB/MAPK signaling pathways activation and proinflammatory factor were also observed in the jejunal of those piglets fed with BAO.Conclusions In summary,our study demonstrates that

关键词： Anti-stress Benzoic acid Essential oils Intestine LPS Weaned piglets

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The auxin transporter OsAUX1 regulates tillering in rice(Oryza sativa)

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Journal of Integrative Agriculture 2024年第5期23卷 1454-1467页

作者： Luqi Jia Yongdong Dai ziwei Peng Zhibo cui Xuefei Zhang Yangyang Li Weijiang Tian Guanghua He Yun Li Xianchun Sang Chongqing Key Laboratory of Crop Molecular Improvement/Rice Research Institute Academy of Agricultural SciencesSouthwest UniversityChongqing400715China Rice and Sorghum Research Institute Sichuan Academy of Agricultural Sciences/Key Laboratory of Southwest Rice Biology and Genetic BreedingMinistry of Agriculture and Rural AffairsDeyang 618000China

Tillering is an important agronomic trait of rice(Oryza sativa)that affects the number of effective panicles,thereby affecting yields.The phytohormone auxin plays a key role in tillering.Here we identified the high tillering and semi-dwarf 1(htsd1)mutant with auxin-deficiency root characteristics,such as shortened lateral roots,reduced lateral root density,and enlarged root angles.htsd1 showed reduced sensitivity to auxin,but the external application of indole-3-acetic acid(IAA)inhibited its tillering.We identified the mutated gene in htsd1 as AUXIN1(OsAUX1,LOC_Os01g63770),which encodes an auxin influx transporter.The promoter sequence of OsAUX1 contains many SQUAMOSA PROMOTER BINDING PROTEIN-LIKE(SPL)binding sites,and we demonstrated that SPL7 binds to the OsAUX1 promoter.TEOSINTE BRANCHED1(OsTB1),a key gene that negatively regulates tillering,was significantly downregulated in htsd1.Tillering was enhanced in the OsTB1 knockout mutant,and the external application of IAA inhibited tiller elongation in this mutant.Overexpressing OsTB1 restored the multi-tiller phenotype of htsd1.These results suggest that SPL7 directly binds to the OsAUX1 promoter and regulates tillering in rice by altering OsTB1 expression to modulate auxin signaling.

关键词： rice(Oryza sativa L.) tillering indole-3-acetic acid(IAA) OsAUX1 OsTB1

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阎连科小说的“梦境”书写——以《日熄》为中心

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商丘职业技术学院学报 2022年第5期21卷 15-19页

作者：崔紫薇天水师范学院文学与文化传播学院甘肃天水741000

21世纪以来,梦已然成为阎连科小说叙述的重要内容。从《丁庄梦》到《日熄》,阎连科或是在小说中插入大量的梦境描写,或是直接将小说架构为一场“梦幻”。在《丁庄梦》等作品中,梦境还只是个体欲望的隐性表达;到了《日熄》,阎连科借助对... 详细信息

21世纪以来,梦已然成为阎连科小说叙述的重要内容。从《丁庄梦》到《日熄》,阎连科或是在小说中插入大量的梦境描写,或是直接将小说架构为一场“梦幻”。在《丁庄梦》等作品中,梦境还只是个体欲望的隐性表达;到了《日熄》,阎连科借助对集体梦游的刻画,表现出整个人类的集体无意识,尤其是阴影原型所象征的人性恶。梦境书写因此成为阎连科探寻人性的有效方式。除此之外,梦境书写的叙述策略也表现出阎连科的创作无意识:对自我生命惶惑的表达和对写作困境的体认。

关键词：阎连科小说梦境书写《日熄》

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融合注意力机制的高分辨人脸识别图像重建

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信号处理 2022年第1期38卷 118-127页

作者：胡正平潘佩云崔紫微赵梦瑶毕帅燕山大学信息科学与工程学院河北秦皇岛066004 燕山大学河北省信息传输与信号处理重点实验室河北秦皇岛066004

针对由于人脸姿势、光照不均、拍摄环境、拍摄设备等内外部因素造成图像分辨率低的问题,提出融合注意力机制的高分辨人脸识别图像重建模型。首先以低分辨率人脸图像对作为两个生成器输入,通过残差块和注意力模块堆叠网络提取人脸特征信... 详细信息

针对由于人脸姿势、光照不均、拍摄环境、拍摄设备等内外部因素造成图像分辨率低的问题,提出融合注意力机制的高分辨人脸识别图像重建模型。首先以低分辨率人脸图像对作为两个生成器输入,通过残差块和注意力模块堆叠网络提取人脸特征信息,进而生成高分辨率人脸图像。训练中使用一个鉴别器来监督两个生成器的训练过程。利用Adam算法对鉴别器、生成器以及对抗损失函数进行迭代优化来提升网络模型性能。模型在CASIA-WebFace数据集上进行训练,在CASIA-WebFace、CelebA、LFW数据集上进行测试。实验表明,注意力模块可有效弥补浅层卷积神经网络提取特征时因偏向局部关系建模而缺乏对全局信息学习的不足,能学习利于重建高分辨率图像的特征信息。本模型重建人脸有较好的视觉效果,并且具有保留人脸身份信息的特性。

关键词：人脸重建低分辨率生成对抗网络注意力机制

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反向累加生成绝对灰度性质及其在灾害事件预测中的应用

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辽宁工程技术大学学报（自然科学版） 2024年第3期43卷 288-295页

作者：陈紫维赵守江刘军崔盛三峡大学理学院湖北宜昌443002 三峡大学三峡数学研究中心湖北宜昌443002

为研究反向累加生成序列绝对灰度的变化规律,基于原始序列与其一次反向累加生成序列的级比关系,推导了整数阶反向累加生成序列绝对灰度的一般表达式及其相关性质。结合实际问题背景,讨论了融合绝对灰度的反向累加灰色模型在突发灾害事... 详细信息

为研究反向累加生成序列绝对灰度的变化规律,基于原始序列与其一次反向累加生成序列的级比关系,推导了整数阶反向累加生成序列绝对灰度的一般表达式及其相关性质。结合实际问题背景,讨论了融合绝对灰度的反向累加灰色模型在突发灾害事件预测中的应用效果。研究结果表明:当原始序列的绝对灰度大于0.6时,进行反向累加生成变换能够有效降低序列的绝对灰度,当原始序列的绝对灰度小于0.25时,对序列进行反向累加生成变换会增大序列的绝对灰度。研究结论为灰建模的模型选择及序列预处理方式的选择提供参考。

关键词：反向累加生成绝对灰度灰色模型新信息优先突发灾害事件预测

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