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Cu-optimized long-range interaction between Co nanoparticles and Co single atoms:Improved Fenton-like reaction activity

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Science Bulletin 2024年第16期69卷 2529-2542页

作者： Fan Mo Zelin Hou qixing zhou Xixi Chen Weitao Liu Wendan Xue Qi Wang Jianling Wang Tong Zheng Zongxin Tao Key Laboratory of Pollution Processes and Environmental Criteria(Ministry of Education)/Tianjin Key Laboratory of Environmental Remediation and Pollution Control Carbon Neutrality Interdisciplinary Science CenterCollege of Environmental Science and EngineeringNankai UniversityTianjin 300350China National Engineering Research Center of Pesticide Nankai UniversityTianjin 300350China

The interplay between multi-atom assembly configurations and single atoms(SAs)has been gaining attention in ***,the effect of long-term range interactions between SAs and multi-atom assemblies on the orbital filling characteristics has yet to be *** this context,we introduced copper(Cu)doping to strengthen the interaction between cobalt(Co)nanoparticles(NPs)and Co SAs by promoting the spontaneous formation of Co-Cu alloy NPs that tends toward aggregation owing to its negative cohesive energy(-0.06454),instead of forming Cu *** incorporation of Cu within the Co-Cu alloy NPs,compared to the pure Co NPs,significantly expedites the kinetics of peroxymonosulfate(PMS)oxidation processes on Co *** Co NPs,Co-Cu NPs facilitate electron rearrangement in the d orbitals(especially dz^(2)and dxz)near the Fermi level in Co SAs,thereby optimizing the dz^(2)-O(PMS)and dxz-O(SO_(5)^(-))orbital ***,the Co-Cu alloy NPs embedded in nitrogen-doped carbon(CC@CNC)catalysts rapidly eliminated 80.67% of 20 mg L^(-1)carbamazepine(CBZ)within 5 *** performance significantly surpasses that of catalysts consisting solely of Co NPs in a similar matrix(C@CNC),which achieved a 58.99% reduction in 5 *** quasi in situ characterization suggested that PMS acts as an electron donor and will transfer electrons to Co SAs,generating^(1)O_(2)for contaminant *** study offers valuable insights into the mechanisms by which composite active sites formed through multi-atom assembly interact at the atomic orbital level to achieve high-efficiency PMS-based advanced oxidation processes at the atomic orbital level.

关键词： Spontaneous alloying Co-Cu alloy NPs Co SAs Synergism Orbital electron filling

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海-陆交互作用与海岸带碳中和农业驱动

农业环境科学学报 2024年第1期43卷 1-10页

作者：周启星王辉欧阳少虎南开大学环境科学与工程学院/南开大学碳中和交叉科学中心环境污染过程与基准教育部重点实验室天津300350

海岸带既是生态脆弱区也是低碳农业发展“前哨”。推动和发展碳中和农业符合时代所需,也符合绿色、可持续发展理念。基于此,本文阐述了在海岸带区域发展碳中和农业的相关问题和重要性。首先,本文阐释了海陆交互作用以及海岸带碳中和农... 详细信息

海岸带既是生态脆弱区也是低碳农业发展“前哨”。推动和发展碳中和农业符合时代所需,也符合绿色、可持续发展理念。基于此,本文阐述了在海岸带区域发展碳中和农业的相关问题和重要性。首先,本文阐释了海陆交互作用以及海岸带碳中和农业发展理念;然后,分析了海岸带碳中和农业驱动中的碳中和农业生物、人工光合作用与农业驱动以及该理念的工程化应用问题;最后,深入剖析了如何识别海岸带农业核心碳汇,包括原位监测、同位素标记与统计学分析方法,并在此基础上提出了农业碳汇增强技术,为后续海岸带碳中和农业的构建、发展和实践提供参考,同时对促进脆弱的海岸带生态系统的保护和绿色低碳农业的发展具有重要意义。

关键词：碳中和农业海岸带海陆交互作用可持续发展人工光合作用

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基于碳中和的微污染复杂水体治理与修复

科学通报 2024年第19期69卷 2789-2803页

作者：程思雯王鹏飞周启星南开大学环境科学与工程学院/南开大学碳中和交叉科学中心环境污染过程与基准教育部重点实验室天津300350 天津理工大学环境科学与安全工程学院天津300384

微污染复杂水体的治理与修复已逐渐成为全球性的环境难题,亟须绿色低碳的新兴技术予以解决.本文首先对“复杂水体”这一新概念进行了定义,并对典型复杂水体进行了举例说明.之后,系统梳理、概述了水体(包括复杂水体)中发生的微污染现象... 详细信息

微污染复杂水体的治理与修复已逐渐成为全球性的环境难题,亟须绿色低碳的新兴技术予以解决.本文首先对“复杂水体”这一新概念进行了定义,并对典型复杂水体进行了举例说明.之后,系统梳理、概述了水体(包括复杂水体)中发生的微污染现象及其存在的主要新微污染物种类;全面深入总结、探讨了微污染复杂水体治理与修复相关技术(包括物理化学处理技术、高级氧化技术、生物处理技术和联合/协同处理技术)的最新进展;提出了基于碳中和的微污染复杂水体治理与修复的策略与方案.最后,对该领域今后的研究重点及未来发展方向做出了展望,旨在促进水体微污染问题的系统研究与根治,进而为改善水生生态系统、提升饮用水安全和实现碳中和目标奠定科学基础.

关键词：复杂水体微污染物治理与修复技术碳中和

Degradation of some typical pharmaceuticals and personal care products with copper-plating iron doped Cu_2O under visible light irradiation

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Journal of Environmental Sciences 2012年第5期24卷 827-833页

作者： Jing An qixing zhou Key Laboratory of Terrestrial Ecological Process Institute of Applied EcologyChinese Academy of SciencesShenyang 110016China Key Laboratory of Pollution Processes and Environmental Criteria(Ministry of Education) College of Environmental Science and EngineeringNankai UniversityTianjin 300071China

A mixture of five commonly used pharmaceuticals and personal care products （PPCPs） was degraded using a new combined catalyst under visible light irradiation. Scanning electron microscopy and X-ray diffraction analysis revealed that the combined catalyst was composed of copper-plating iron doped Cu2O （FeCu/Cu2O）. Compared with the Fe/C inner micro-circuit, the electric currents flowing between Cu and Fe increase the speed of anodic Fe dissolution. Moreover, due to the photochemical properties, Cu2O can accelerate the PPCPs degradation processes under the irradiation of visible light. In addition, shaking increased the dissolved oxygen concentration in the solution, which not only preconditioned the photo-catalysis reaction, but also set the stage for Fe reduction. According to the experimental results, we propose the possible reaction mechanism of the reaction.

关键词： copper-plating iron Cu2O PPCPs degradation mechanism

Conversion relationships between environmental quality criteria of water/air and soil

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Science China Earth Sciences 2018年第12期61卷 1781-1791页

作者： Yong TENG qixing zhou Key Laboratory of Pollution Processes and Environmental Criteria(Ministry of Education)/Tianjin Key Laboratory of Environmental Remediation and Pollution Control College of Environmental Science and Engineering Nankai University

The conversion study on the environmental quality criteria between water/air and soil is the need to carry out research on soil-environmental quality standards in an all-round way, and also the demand for solving emerging problems in this field using the system dynamic and the overall view. Carrying out this study is of practical significance and theoretical values in the face of formulation and revision of soil-environmental quality standards in China. Firstly, the theoretical basis and relative models of soil-water and soil-air systems were expounded, respectively. And on this basis, a preliminary conceptual model about the conversion was constructed. After that, the current worldwide environmental quality criteria/standards for soil, water and air media were introduced based on their types, concerned pollutants and hierarchical classification, and their variation were also analyzed briefly. Particularlly, the key points for the conversion of environmental quality criteria between soil and water and/or between soil and air were discussed, respectively, while combined with the relative researching results. Finally, this conversion study was commented and prospected.

关键词： Environmental quality criteria Soil-water system Soil-air system Conversion

碳中和背景下基于g-C_(3)N_(4)光催化CO_(2)还原的研究进展与挑战

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Science China Materials 2024年第6期67卷 1740-1764页

作者：展海银周睿人刘可望马志辉王鹏飞展思辉周启星 Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria Carbon Neutrality Interdisciplinary Science Centre/College of Environmental Science and EngineeringNankai UniversityTianjin 300350China Department of Biological and Agricultural Engineering Texas A&M University126 Hobgood2117 TAMUCollege StationTX 77843-2117USA

全球变暖对人类的生产生活造成了严重的威胁,已成为当今世界面临的重大挑战之一.碳中和这一重要举措能够有效缓解全球变暖的进程,在这一背景下光催化CO_(2)还原可有效减少碳排放且促进碳循环.g-C_(3)N_(4)因其制备工艺简单、稳定性高、... 详细信息

全球变暖对人类的生产生活造成了严重的威胁,已成为当今世界面临的重大挑战之一.碳中和这一重要举措能够有效缓解全球变暖的进程,在这一背景下光催化CO_(2)还原可有效减少碳排放且促进碳循环.g-C_(3)N_(4)因其制备工艺简单、稳定性高、能带位置适宜以及优异的光催化性能而备受关注.因此,提高g-C_(3)N_(4)光催化CO_(2)还原效率是当前研究的热点问题.本文重点探究了碳中和对于全球生态平衡和环境可持续发展的重要性以及在碳中和背景下g-C_(3)N_(4)光催化CO_(2)还原的重要作用和发展前景;综述了目前解决限制g-C_(3)N_(4)光催化CO_(2)还原瓶颈问题的方法和技术手段.对g-C_(3)N_(4)在光催化CO_(2)还原领域存在的问题进行讨论,提出了未来的研究方向,并进行展望.本综述旨在为碳中和背景下基于g-C_(3)N_(4)催化剂光催化CO_(2)还原的应用提供理论支持,为基于g-C_(3)N_(4)高效CO_(2)还原光催化剂的设计提供思路.

关键词： carbon neutral photocatalysis CO_(2)reduction gra-phitic carbon nitride modification strategy

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智能种树机器人核心部件创新设计与应用

农机化研究 2024年第10期46卷 102-105,110页

作者：周启兴罗松张俭凌浩吉南昌交通学院南昌330100

为了进一步提升植树作业的精准化及智能化水平,以智能型种树机器人为研究对象,基于机械设计与应用机理展开研究。从当前的种树机器人作业特点及结构组成角度入手,通过准确的参数设计与结构优化布局,设计出全新的可旋转式种树机器人。整... 详细信息

为了进一步提升植树作业的精准化及智能化水平,以智能型种树机器人为研究对象,基于机械设计与应用机理展开研究。从当前的种树机器人作业特点及结构组成角度入手,通过准确的参数设计与结构优化布局,设计出全新的可旋转式种树机器人。整机运行与控制试验验证结果表明:以机械设计为引导理念,系统地分析种树机器人结构特征,以自动控制与CAD/CAE协同设计为开发手段,对核心组件进行正确设计配合,显著提升了种树机器人的控制与动作衔接效果,目标种植准确率可达92.50%,且系统运行稳定,可为智能化种树机器人的深度改进与实践应用提供参考。

关键词：种树机器人结构优化种植准确率

Cytochrome P450 monooxygenase specific activity reduction in wheat Triticum aestivum induced by soil roxithromycin stress

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Frontiers of Environmental Science & Engineering 2016年第2期10卷 270-275页

作者： Kangxin HE qixing zhou MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation College of Environmental Science and Engineering Nankai University Tianjin 300071 China

Roxithromycin, livestock growth promoter, as widely used medicine and arouses concern because its occurrence and persistence in soil environments. However, effects of roxithromycin in higher plants are still vague. Accordingly, we hypothesized that roxithromycin-con- taminated soil may exhibits ecotoxicological effects in wheat （Triticum aestivum）. In this study, effects induced by a gradient concentration of roxithromycin stress （0.01, 0.1, 1, 10, and 100 ***-1） was investigated in a 7-d soil test in T. aestivum. Results indicated that the specific activity of cytochrome P450 （CYP450） monooxygenase was decreased dramatically with the concentration of roxithro- mycin in soil. The IC50 value was ***-1 of roxithromycin. On the contrary, the growth related endpoints （i.e., the germination percentage, the biomass and the height）, the content related endpoints （i.e., soluble protein content and CYP450 content）, and the superoxide dismutase （SOD） activity failed to reveal the roxithromy- cin-induced effects. Further analysis revealed that the CYP450 monooxygenase specific activity reduction was enzymatic mechanism mediated, other than oxidative stress induced. We conclude that the soil roxithromycin declined the CYP450 monooxygenase activity in T. aestivum by the inhibition of the enzymatic mechanism. Further efforts can include, but are not limited to, investigation of joint effects induced by combined exposure of roxithromycin and the pesticides and evalua- tion of the similar effects in other higher plants.

关键词： roxithromycin toxic effect cytochrome P450monooxygenase soil environment Triticum aestivum,biomarker

The application and progress of bioelectrochemical systems (BESs) in soil remediation: A review

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Green Energy & Environment 2021年第1期6卷 50-65页

作者： Tian Li Ruixiang Li qixing zhou MOE Key Laboratory of Pollution Processes and Environmental Criteria Tianjin Key Laboratory of Environmental Remediation and Pollution ControlCollege of Environmental Science and EngineeringNankai UniversityNo.38 Tongyan RoadJinnan DistrictTianjin300350China

Soil pollution endangers human health and ecological balance,which is why finding a highly efficient way to deal with pollutants is *** method is an environmentally friendly treatment *** systems(BESs),which combine electrochemistry with biological methods,have been widely used to remediate polluted environments,including wastewater,sludge,sediment,and *** BESs,redox reactions occur on electrodes with electroactive bacteria,which convert pollutants into low-polluting or nonpolluting *** BESs being a promising technology in the remediation field,the decontamination mechanisms and applications in soil conducted by BESs have attracted much ***,to better understand the research progress of BESs,this paper mainly summarizes the mechanism of different classified *** applications of microbial fuel cells(MFCs)in four pollutants(petroleum,heavy metals,pesticides,antibiotics)and the possible applications of microbial electrolysis cells(MECs)in soil are *** main problems in BESs and possible future development directions are also evaluated.

关键词： Polluted soil Bioelectrochemical systems Remediation Application