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Promoted surface charge density from interlayer Zn–N_(4) configuration in carbon nitride for enhanced CO_(2) photoreduction

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Nano Research 2024年第4期17卷 2400-2409页

作者： xianjin Shi Yu Huang Gangqiang Zhu Wei peng Meijuan Chen State Key Laboratory of Loess and Quaternary Geology(SKLLQG) Key Laboratory of Aerosol Chemistry and PhysicsInstitute of Earth EnvironmentChinese Academy of SciencesXi’an 710061China Center of Excellence in Quaternary Science and Global Change Chinese Academy of SciencesXi’an 710061China University of Chinese Academy of Sciences Beijing 100049China School of Physics and Information Technology Shaanxi Normal UniversityXi’an 710062China School of Human Settlements and Civil Engineering Xi’an Jiaotong UniversityXi’an 710049China

The solar-driven reduction of CO_(2) into valuable products is a promising method to alleviate global environmental problems and energy crises.However,the low surface charge density limits the photocatalytic conversion performance of CO_(2).Herein,a polymeric carbon nitride(PCN)photocatalyst with Zn single atoms(Zn1/CN)was designed and synthesized for CO_(2) photoreduction.The results of the CO_(2) photoreduction studies show that the CO and CH_(4) yields of Zn1/CN increased fivefold,reaching 76.9 and 22.9μmol/(g·h),respectively,in contrast to the unmodified PCN.Ar+plasma-etched X-ray photoelectron spectroscopy and synchrotron radiation-based X-ray absorption fine structure results reveal that Zn single atom is mainly present in the interlayer space of PCN in the Zn–N_(4) configuration.Photoelectrochemical characterizations indicate that the interlayer Zn–N_(4) configuration can amplify light absorption and establish an interlayer charge transfer channel.Light-assisted Kelvin probe force microscopy confirms that more photogenerated electrons are delivered to the catalyst surface through interlayer Zn–N_(4) configuration,which increases its surface charge density.Further,in-situ infrared spectroscopy combined with density functional theory calculation reveals that promoted surface charge density accelerates key intermediates(*COOH)conversion,thus achieving efficient CO_(2) conversion.This work elucidates the role of internal single atoms in catalytic surface reactions,which provides important implications for the design of single-atom catalysts.

关键词： single-atom catalysts photocatalytic CO_(2)reduction interlayer modification charge transfer dynamics surface charge density

Coordinative Development Between Land Use Change and Regional Population-Resources-Environment-Development System—A Case Study of Jiangsu Province

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Chinese Geographical Science 2007年第4期17卷 289-296页

作者： XIAO Sisi HUANG xianjin peng Buzhuo School of Geographic ＆ Oceanographic Sciences Nanjing University Nanjing 210093 China

Land use change has significant influence on the operation of the PopulationResources-Environment-De-velopment (PRED) System. Moderate land use is the key factor to ensure the coordinative and sustainable development between land use and PRED system. Based on the internal relationship between land use and PRED system, a PRED evaluation index system and a Press-Status-Response (PSR) model were established in this study. According to the expounding on the mechanism of the PSR model, we investigated the coordinative development between the changes of regional land use and PRED system taking Jiangsu Province as an example. The results showed that the orders of the Synthetic Index of Land Use (SILU) and the Variation of PRED Index (VPI) in Jiangsu are both the southern Jiangsu>the central Jiangsu>the northern Jiangsu. A cubic curve model was used to fit the relationship between the VPI and SILU. The inflection point of VPI was situated in 5.0 of SILU. When SILU was below 5.0, VPI increased with SILU, which will be helpful to the coordinative development between land use and PRED system. Based on those results, it is suggested that the land use degree of the southern Jiangsu, especially that of Nanjing City, should be moderately controlled at present, while land resources of the central Jiangsu and the northern Jiangsu should be further exploited.

关键词：种群环境发展生态保护江苏

A joint call for actions to advance taxonomy in China

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Zoological Systematics 2022年第3期47卷 188-197页

作者： Chaodong Zhu Arong Luo Ming Bai Michael COrr Zhonge Hou Siqin Ge Jun Chen Yibo Hu Xuming Zhou Gexia Qiao Hongzhi Kong Limin Lu Xiaohua Jin Lei Cai Xinli Wei Ruilin Zhao Wei Miao Qingfeng Wang Zhongli Sha Qiang Lin Meng Qu Jianping Jiang Jiatang Li Jing Che Xuelong Jiang Xiaoyong Chen Lianming Gao Zongxin Ren Chunlei Xiang Shixiao Luo Donghui Wu Dong Liu Yanqiong peng Tao Su Chenyang Cai Tianqi Zhu Wanzhi Cai Xingyue Liu Hu Li Huaijun Xue Zhen Ye Xuexin Chen Pu Tang Shujun Wei Hong Pang Qiang Xie Feng Zhang Feng Zhang xianjin peng Aibing Zhang Taiping Gao Changfa Zhou Chen Shao Libin Ma Zhaoming Wei Yunxia Luan Ziwei Yin Wu Dai Cong Wei Xiaolei Huang Jingxian Liu Xiangsheng Chen Tianci Yi Zhisheng Zhang Zhulidezi Aishan Qin Li Hongying Hu CAS Key Laboratory of Zoological Systematics and Evolution Institute of ZoologyChinese Academy of SciencesBeijing 100101China CAS Key Laboratory of Animal Ecology and Conservation Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China State Key Laboratory of Systematic and Evolutionary Botany Institute of BotanyChinese Academy of SciencesBeijing 100093China State Key Laboratory of Mycology(SKLM) Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China CAS Key Laboratory of Aquatic Biodiversity and Conservation Institute of HydrobiologyChinese Academy of SciencesWuhan 430072China Wuhan Botanical Garden Chinese Academy of SciencesWuhan 430074China Department of Marine Organism Taxonomy&Phylogeny Institute of OceanologyChinese Academy of SciencesQingdao 266071China CAS Key Laboratory of Tropical Marine Bio-resources and Ecology South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization&Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province Chengdu Institute of BiologyChinese Academy of SciencesChengdu 610041China State Key Laboratory of Genetic Resources and Evolution&Yunnan Key Laboratory of Biodiversity and Ecological Security of Gaoligong Mountain Kunming Institute of ZoologyChinese Academy of SciencesKunming 650221China CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China CAS Key Laboratory of Plant Resource Conservation and Sustainable Utilization South China Botanical GardenChinese Academy of SciencesGuangzhou 510650China CAS Key Laboratory of Wetland Ecology and Environment Northeast Institute of Geography and AgroecologyChinese Academy of SciencesChangchun 130102China CAS Key Laboratory of Tropical Forest Ecology Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMenglunMenglaYunnan 66630

Taxonomy plays an important role in understanding the origin, evolution, and ecological functionality of biodiversity. There are large number of unknown species yet to be described by taxonomists, which together with their ecosystem services cannot be effectively protected prior to description. Despite this, taxonomy has been increasingly underrated insufficient funds and permanent positions to retain young talents. Further, the impact factordriven evaluation systems in China exacerbate this downward trend, so alternative evaluation metrics are urgently necessary. When the current generation of outstanding taxonomists retires,there will be too few remaining taxonomists left to train the next generation. In light of these challenges, all co-authors worked together on this paper to analyze the current situation of taxonomy and put out a joint call for immediate actions to advance taxonomy in China.

关键词： Endangered taxonomists morphology-based taxonomy integrative taxonomy capacity building systematics

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中国三窝蛛属一新种(蜘蛛目:卵形蛛科)

生命科学研究 2023年第4期27卷 344-348页

作者：刘紫玥谢蝶彭贤锦湖南师范大学生命科学学院湖南长沙410081 湖南省郴州市第五中学湖南郴州423099

记述了采自中国贵州省的三窝蛛属(Trilacuna)一新种,取名为花冠三窝蛛T.corollifora sp.nov.。提供了外形和外生殖器照片,以及地理分布信息,并对形态特征进行了详细描述。

关键词：分类学卵形蛛新种贵州省

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沼液施用对土壤质量的影响综述

灌溉排水学报 2023年第S1期42卷 82-85页

作者：彭先进夏静石景涛应晓成孙文渊黄晓敏沈新平扬州大学江苏扬州225009 扬大(常熟)现代农业发展研究院有限公司江苏苏州215000 常熟市水利技术推广站江苏苏州215000

沼液作为肥料施用是沼液资源化利用的重要方式,是构建高效沼液循环利用模式的关键。因此,研究沼液施用对土壤质量的影响可为沼液资源化安全利用提供科学依据。本文选取土壤体积质量、土壤养分、土壤酸碱度、土壤酶活性、土壤微生物和土... 详细信息

沼液作为肥料施用是沼液资源化利用的重要方式,是构建高效沼液循环利用模式的关键。因此,研究沼液施用对土壤质量的影响可为沼液资源化安全利用提供科学依据。本文选取土壤体积质量、土壤养分、土壤酸碱度、土壤酶活性、土壤微生物和土壤重金属6个代表性指标,综述了沼液施用对土壤质量的影响。合理施用沼液有利于降低土壤体积质量,增强土壤养分累积,改善土壤酸碱度及提高土壤酶活性。长期沼液施用可能会导致土壤微生物类型由“细菌型”转向“真菌型”,并带来重金属污染风险。当前的研究难点主要在于沼液的异质性及土壤评价方法不统一,探究沼液最佳施用量、明确土壤沼液最大承载量、沼液影响土壤质量的机理机制、建立统一的土壤质量评价方法是未来的研究重点。

关键词：沼液土壤质量土壤养分承载量

不同种类缓混肥对常农粳12号水稻生长的影响

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现代农业科技 2023年第12期 35-37,41页

作者：孙文渊应晓成石景涛彭先进常熟市水利技术推广站江苏常熟215500 扬大(常熟)现代农业发展研究院有限公司江苏常熟215500 扬州大学江苏扬州225009

以常农粳12号为试验对象,研究不同种类缓混肥对水稻生长的影响。结果表明:不同种类缓混肥对常农粳12号水稻生长及产量的影响有一定差异,以汉枫缓释肥料有限公司生产的专用缓混肥(30-6-12)效果最好,其能有效提高水稻最高分蘖数,在抽穗前... 详细信息

以常农粳12号为试验对象,研究不同种类缓混肥对水稻生长的影响。结果表明:不同种类缓混肥对常农粳12号水稻生长及产量的影响有一定差异,以汉枫缓释肥料有限公司生产的专用缓混肥(30-6-12)效果最好,其能有效提高水稻最高分蘖数,在抽穗前期及成熟期可有效提高剑叶SPAD值,促进植株的光合作用,与江苏艾萨斯新型肥料工程技术有限公司生产的水稻专用缓释肥(33-5-12)及稳定性肥料(26-10-15)相比,理论产量分别提高0.68%和1.43%,实际产量分别提高了9.6%和6.1%。

关键词：缓混肥水稻常农粳12号产量

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GCr15棒材热剪切开裂原因

理化检验:物理分册 2023年第8期59卷 37-39,66页

作者：刘月云杨娥周杨彭先锦田浩大冶特殊钢有限公司高品质特殊钢湖北省重点实验室黄石435001

在对某热轧态的GCr15棒材进行热剪切下料的过程中,其剪切面有开裂现象。采用宏观观察、超声波检测、化学成分分析、扫描电镜分析及金相检验等方法分析其开裂原因。结果表明:热轧棒材端部的中心应力裂纹是造成剪切开裂的主要原因,棒材端... 详细信息

在对某热轧态的GCr15棒材进行热剪切下料的过程中,其剪切面有开裂现象。采用宏观观察、超声波检测、化学成分分析、扫描电镜分析及金相检验等方法分析其开裂原因。结果表明:热轧棒材端部的中心应力裂纹是造成剪切开裂的主要原因,棒材端部的中心应力裂纹与棒材轧制后未及时退火或者缓冷有关。

关键词：热轧剪切开裂中心应力裂纹

高校教育质量面临的挑战与质量保障体系的构建

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高教探索 2002年第4期 25-26,24页

作者：杨燕彭先进陈舒怀广东工业大学教务处

文章针对当前高等学校面临的教学资源缺乏、学生素质下降等问题 ,提出在学校外部和内部建立教育质量保障体系 ,从宏观调控、经费保障、质量认证和监控等方面入手 ,保证大众化高等教育质量。

关键词：教育质量质量保障体系高等教育扩招中国宏观调控教育投入

中国巨蟹蛛科两新种(蛛形纲 :蜘蛛目)(英文)

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动物分类学报 2001年第4期26卷 483-486页

作者：彭贤锦尹长民湖南师范大学生命科学学院湖南省生物研究所长沙410081

记述湖南省巨蟹蛛科 2新种 :壶瓶巨蟹蛛Heteropodahupingensissp .nov .和谢氏中盾蛛Sinopodaxieaesp .nov .。模式标本存于湖南师范大学生命科学学院 ,量度单位为mm ,比例尺为 1mm。壶瓶巨蟹蛛 ,新种Heteropodahupingensissp .nov .　 ... 详细信息

记述湖南省巨蟹蛛科 2新种 :壶瓶巨蟹蛛Heteropodahupingensissp .nov .和谢氏中盾蛛Sinopodaxieaesp .nov .。模式标本存于湖南师范大学生命科学学院 ,量度单位为mm ,比例尺为 1mm。壶瓶巨蟹蛛 ,新种Heteropodahupingensissp .nov .　 (图 1～ 4 )正模　♂ ,湖南省石门县壶瓶山 ,1992年 6月 2 5日～ 7月 5日 ,彭贤锦采。鉴别特征　新种与白额巨蟹蛛Heteropodavenatoria(Linnaeus,1775 )相似 ,但有以下区别 :1)胫节突不同 ,新种的胫节突腹面观腹支呈拇指状 ,背支不易见及 ,后者腹面观明显可见两分支 ,背支较长 ;3)新种的插入器较粗短 ,沿生殖球中间向端部延伸 ,后者的插入器较细长 ,沿生殖球边缘向端部延伸。新种的种名来自模式标本产地。谢氏中盾蛛 ,新种Sinopodaxieaesp .nov .　(图 5～ 7)正模♀ ,湖南省石门县壶瓶山 ,1992年 6月 2 5日～ 7月 5日 ,谢莉萍采。鉴别特征　新种的外雌器腹面观似Sinopodaforcipata(Karsch ,1881) ,但有以下区别 :1)交媾后缘相距较近 ,其间的夹角远小于后者的夹角 ;2 )与中隔端部相连的横向裂陷远宽于后者 ;3)纳精囊远较后者粗大 ,无明显分支 ;后者纳精囊较细小 ,有明显分支。新种的种名来自模式标本采集者的姓氏。

关键词：蛛形纲蜘蛛目巨蟹蛛科新种