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Leveraging the metacoupling framework for sustainability science and global sustainable development

National Science Review 2023年第7期10卷 36-59页

作者： Jianguo Liu Center for Systems Integration and Sustainability Department of Fisheries and Wildlife Michigan State University

Sustainability science seeks to understand human-nature interactions behind sustainability challenges,but has largely been place-based.Traditional sustainability efforts often solved problems in one place at the cost of other places,compromising global sustainability.The metacoupling framework offers a conceptual foundation and a holistic approach to integrating human-nature interactions within a place,as well as between adjacent places and between distant places worldwide.Its applications show broad utilities for advancing sustainability science with profound implications for global sustainable development.They have revealed effects of metacoupling on the performance,synergies,and trade-offs of United Nations Sustainable D evelopment Goals(SDGs) across borders and across local to global scales;untangled complex interactions;identified new network attributes;unveiled spatio-temporal dynamics and effects of metacoupling;uncovered invisible feedbacks across metacoupled systems;expanded the nexus approach;detected and integrated hidden phenomena and overlooked issues;re-examined theories such as Tobler’ s First Law of Geography;and unfolded transformations among noncoupling,coupling,decoupling,and recoupling.Results from the applications are also helpful to achieve SDGs across space,amplify benefits of ecosystem restoration across boundaries and across scales,augment transboundary management,broaden spatial planning,boost supply chains,empower small agents in the large world,and shift from place-based to flow-based governance.Key topics for future research include cascading effects of an event in one place on other places both nearby and far away.Operationalizing the framework can benefit from further tracing flows across scales and space,uplifting the rigor of causal attribution,enlarging toolboxes,and elevating financial and human resources.Unleashing the full potential of the framework will generate more important scientific discoveries and more effective solutions for global justice and sustainable development.

关键词： biodiversity ecosystem services human–nature interactions planetary boundaries telecoupling sustainable development

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Facile synthesis of hydrochar-supported catalysts from glucose and its catalytic activity towards the production of functional amines

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Green Energy & Environment 2023年第5期8卷 1358-1370页

作者： Xiuzheng Zhuang Jianguo Liu Longlong Ma Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy and EnvironmentSoutheast UniversityNanjing210096China Key Laboratory of Renewable Energy Guangzhou Institute of Energy ConversionChinese Academy of SciencesGuangzhou510640China

Since the utilization of abundant biomass to develop advanced materials has become an utmost priority in recent years,we developed two sustainable routes(i.e.,the impregnation method and the one-pot synthesis)to prepare the hydrochar-supported catalysts and tested its catalytic performance on the reductive amination.Several techniques,such as TEM,XRD and XPS,were adopted to characterize the structural and catalytic features of samples.Results indicated that the impregnation method favors the formation of outer-sphere surface complexes with porous structure as well as well-distributed metallic nanoparticles,while the one-pot synthesis tends to form the inner-sphere surface complexes with relatively smooth appearance and amorphous metals.This difference explains the better activity of catalysts prepared by the impregnation method which can selectively convert benzaldehyde to benzylamine with an excellent yield of 93.7%under the optimal reaction conditions;in contrast,the catalyst prepared by the one-pot synthesis only exhibits a low selectivity near to zero.Furthermore,the gram-scale test catalyzed by the same catalysts exhibits a similar yield of benzylamine in comparison to its smaller scale,which is comparable to the previously reported heterogeneous noble-based catalysts.More surprisingly,the prepared catalysts can be expediently recycled by a magnetic bar and remain the satisfying catalytic activity after reusing up to five times.In conclusion,these developed catalysts enable the synthesis of functional amines with excellent selectivity and carbon balance,proving cost-effective and sustainable access to the wide application of reductive amination.

关键词： Impregnation method One-pot synthesis Hydrochar-supported catalyst Reductive amination

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Characterization of submicron aerosol particles in winter at Albany,New York

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Journal of Environmental Sciences 2022年第1期34卷 118-129页

作者： Xiuli Wei Huaqiao Gui Jianguo Liu Ying Cheng Key Laboratory of Environmental Optics and Technology Anhui Institute of Optics and Fine MechanicsHefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China CAS Center for Excellence in Regional Atmospheric Environment Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China University of Science and Technology of China Hefei 230031China

A thorough understanding of chemical composition,particle pH,and pollutant emissions is essential to address the climate and human health effects of atmospheric particles.In this study,we used a High-Resolution Time-of-Flight Aerosol Mass Spectrometer(HR-ToF-AMS)and Scanning Mobility Particle Sizer(SMPS)to characterize the composition of submicron particles.Moreover,we applied the ISORROPIA-II model to analyze the particle acidity effect on the compositional characterization of submicron particles from December 22,2016 to January 7,2017 in Albany,New York,USA.The results indicated that aerosols with mobility diameter from SMPS in the range 200–400 nm were the main contributors to the mass during the measurement period.The dominance of organics(47%)and sulfate(16%)was similar to previous observations in the eastern United States in Winter 2015,while the fraction of nitrate(23%)was much higher.Moreover,nitrate could easily form at colder temperatures and lower RH levels even when there were more acidic particle periods during the measurement period in Albany.The ISORROPIA-II model indicated that there were more acidic particles,which was estimated using pH values.Lower temperature conditions tended to favor nitrate formation.The nitrate concentration exceeded that of sulfate in the measurement period,even though the SO2and NOxemissions were similar.The organics in submicron particles were strongly influenced by the local emissions in winter.However,the inorganic compounds in submicron particles could be derived from regional transport as their pollution sources originated from different directions.This may help strategize emission reductions in the future.

关键词： Submicron particles Chemical composition Particle pH HR-ToF-AMS ISORRPIA-II model

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PSI-driven cyclic electron fl ow partially alleviates the peroxidation of red alga Gelidium amansii(Gelidiaceae)caused by temporary high temperature

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Journal of Oceanology and Limnology 2022年第1期40卷 206-215页

作者： Yongfu LI Jianguo Liu Litao ZHANG CAS and Shandong Province Key Laboratory of Experimental Marine Biology Center for Ocean Mega-ScienceInstitute of OceanologyChinese Academy of SciencesQingdao 266071China Marine Biology and Biotechnology Laboratory Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China

PSI-driven cyclic electron fl ow(CEF-I)helps higher plants avoid severe heat damage.Gelidium amansii,a red seaweed used in the production of agar,inhabits subtidal rocks but can be found in the intertidal zone.The biological role of CEF-I is still unclear in this organism.Wild G.amansii was exposed to 30℃heat stress for 12 h with continuous lighting.The results showed that treatment at 30℃gradually decreased maximal PSII photochemical effi ciency(F_(v)/F_(m)),linear electron transfer rate,and activity of photosynthetic reaction center.Both the maximal photochemical effi ciency under light(F_(v)'/F_(m)')and maximum quantum yield of light-adapted PSII(Φ_(PSII))were maintained at a relatively stable level during the initial 6 h and then signifi cantly decreased at 12 h.The up-regulated CEF-I helps to enhance proton gradient transfer across thylakoid membrane to protect oxygen-evolving complex against heat damage.Following the addition of a CEF-I inhibitor to plants,the F_(v)/F m greatly decreased,suggesting that the CEF-I alleviates degree of photoinhibition caused by strong light.The results of measurement of antioxidant enzymes,including superoxide dismutase(SOD),ascorbate peroxidase(APX)and catalase(CAT),and the contents of H_(2)O_(2)and malonaldehyde(MDA)provided additional evidence that CEF-I plays a protective role to a certain extent for G.amansii to manage stress at 30℃.Therefore,it can be concluded that CEF-I enables G.amansii to survive in intertidal zones by protecting it from the heat damage caused by high temperature stress.

关键词： cyclic electron fl ow Gelidium amansii heat stress chlorophyll fl uorescence quantum yield natural distribution

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Broader applicability of the metacoupling framework than Tobler’s first law of geography for global sustainability:A systematic review

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Geography and Sustainability 2023年第1期4卷 6-18页

作者： Nicholas Manning Yingjie Li Jianguo Liu Center for Systems Integration and Sustainability Department of Fisheries and WildlifeMichigan State UniversityEast LansingMIUSA

Complex sustainability issues in the Anthropocene,with rapid globalization and global environmental changes,are increasingly interlinked between not only nearby systems but also distant systems.Tobler’s first law of geog-raphy(TFL)states“near things are more related than distant things”.Evidence suggests that TFL is not infallible for sustainability issues.Recently,the integrated framework of metacoupling(MCF;human-nature interactions within as well as between adjacent and distant systems)has been applied to analyze the interactions between nearby and distant coupled human and natural systems simultaneously.However,previous work has been scat-tered and fragmented.It is crucial to understand the extent to which TFL and MCF apply across pressing issues in sustainability.Therefore,we reviewed and synthesized sustainability literature that used TFL and MCF across seven major topics:land change,species migration,tourism,trade,agricultural development,conservation,and governance.Results indicate MCF had a much broader applicability than TFL for these topics.The literature using MCF generally did not or likely did not obey TFL,especially in trade,governance,and agricultural de-velopment.In the TFL literature,most topics obeyed TFL,except for species migration and trade.The findings suggest the need to rethink and further test TFL’s relevance to sustainability issues,and highlight the potential of MCF to address complex interactions between both adjacent and distant systems across the world for global sustainability.

关键词： Telecoupling Sustainability Tobler’s First Law of geography Systematic review Metacoupling

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Key materials and technologies for fuel cells

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Progress in Natural Science:Materials International 2020年第6期30卷 719-720页

作者： Jianguo Liu Nanjing University

Fuel cells efficiently convert diverse fuels directly into electricity without combustion, and they are key elements of a broad portfolio for building a competitive, secure, and sustainable clean energy economy.They offer a broad range of benefits, including reduced greenhouse gas emissions; reduced oil consumption; expanded use of renewable power(through the use of hydrogen derived from renewable resources as a transportation fuel as well as for energy storage and transmission)

关键词： Fuel cells

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Effect of high light and desiccation on photosystem Ⅱ in the seedlings and mature plants of tropical seagrass Enhalus acoroides during low tide

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Journal of Oceanology and Limnology 2023年第1期41卷 241-250页

作者： Xingkai CHE Hu LI Litao ZHANG Jianguo Liu CAS and Shandong Key Laboratory of Experimental Marine Biology Center for Ocean Mega-ScienceInstitute of OceanologyChinese Academy of SciencesQingdao 266071China Laboratory for Marine Biology and Biotechnology Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China

During low tide,the intertidal seagrass Enhalus acoroides is often exposed to high light and desiccation,which can seriously threaten its survival,at least partly by inhibiting photosystem Ⅱ(PSⅡ)activity.The response of leaves of E.acoroides to high light and desiccation was compared for seedlings and mature plants.Results show that the resistance of seedling and mature leaves to high light was quite similar,but to desiccation was very different.Seedling leaves were more sensitive to desiccation than the mature plant leaves,but had better water retention.The damage of desiccation to seedling leaves was mainly caused by dehydration,whereas that to mature plant leaves was caused by hypersaline toxicity.The recovery rate of PSⅡ of seedling leaves was significantly slower than that of the mature plants after the stresses disappeared,which may at least partly contribute to seedling mortality in the wild.In addition,compared to high light,desiccation seriously inhibited the recovery rate of PSⅡ activities even if the leaves became fully rehydrated to their normal relative water content(RWC)in the following re-immersion.Desiccation inhibited the recovery rate of RC/CS_(M)(reaction center per cross section(at t=t_(Fm)))to decrease the production of assimilatory power,which maybe the cause of the slower PSⅡ recovery in desiccation treatments.This study demonstrates that desiccation particularly coupling with high light have a very negative ef fect on the PSⅡ of E.acoroides during low tide and the sensitivity of seedlings and mature plants to desiccation is significantly different,which have important reference significance to choose an appropriate transplanting depth where seedlings and mature plants of E.acoroides not only receive sufficient light for growth,but also that minimize desiccation stress during low tide.

关键词： Enhalus acoroides high light desiccation photosystemⅡ

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Tandem synthesis of tertiary amines using graphene encapsulated Ni nocatalyst via nitro compounds hydrogenation and primary amine methylation

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Green Chemical Engineering 2022年第1期3卷 64-70页

作者： Jianguo Liu Yanpei Song Huanli Wang Longlong Ma Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy and EnvironmentSoutheast UniversityNanjing210096China Dalian National Laboratory for Clean Energy Dalian116023China CAS Key Laboratory of Renewable Energy Guangdong Provincial Key Laboratory of New and Renewable Energy Research and DevelopmentGuangzhou Institute of Energy ConversionChinese Academy of SciencesGuangzhou510640China

Development of the economic, environmentally friendly synthesis of amines from nitro compounds remains important and challenging. In this work, the graphene shell encapsulated none noble Ni-based catalysts were successfully designed and synthesized via an environmentally friendly method using H2O or Et OH as solvent. These fresh and recycling catalysts were characterized by X-ray diffraction and X-ray photoelectron spectroscopy. For the nitro compounds hydrogenation, Ni@C-600-H2O exhibits the best catalytic activity to achieve 100 mol/mol conversions of nitrobenzene and 99% selectivity of aniline under mild reaction conditions of 1.0 MPa H2and 60°C.Many halogen-substituted, olefin substituted nitro compounds and aliphatic nitro compounds were investigated and desired products were obtained in excellent selectivity. What is more, the catalyst had excellent stability and could be recycled 13 times without any significant loss in selectivity and activity. Furthermore, we also reported the methodology for tertiary amines synthesis using Ni-based catalyst via one-pot, cost-effective tandem combination reaction with nitrobenzene hydrogenation and amines N-methylation.

关键词： Encapsulated graphene shell Ni@graphene catalyst Selective hydrogenation Nitro compounds

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Identifying spreading influence nodes for social networks

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Frontiers of Engineering Management 2022年第4期9卷 520-549页

作者： Yang OU Qiang GUO Jianguo Liu Research Center of Complex Systems Science University of Shanghai for Science and TechnologyShanghai 200093China Institute of Accounting and Finance Shanghai University of Finance and EconomicsShanghai 200433China

The identification of spreading influence nodes in social networks,which studies how to detect important individuals in human society,has attracted increasing attention from physical and computer science,social science and economics communities.The identification algorithms of spreading influence nodes can be used to evaluate the spreading influence,describe the node’s position,and identify interaction centralities.This review summarizes the recent progress about the identification algorithms of spreading influence nodes from the viewpoint of social networks,emphasizing the contributions from physical perspectives and approaches,including the microstructure-based algorithms,community structure-based algorithms,macrostructure-based algorithms,and machine learning-based algorithms.We introduce diffusion models and performance evaluation metrics,and outline future challenges of the identification of spreading influence nodes.

关键词： complex network network science spreading influence machine learning

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Understanding of free radical scavengers used in highly durable proton exchange membranes

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Progress in Natural Science:Materials International 2020年第6期30卷 732-742页

作者： Zhiyan Rui Jianguo Liu National Laboratory of Solid State Microstructures College of Engineering and Applied Sciences Collaborative Innovation Center of Advanced Microstructures Nanjing University

Lifetime is always one of the core concerns of proton exchange membrane fuel cell, especially in commercial utilization. Membrane failure caused by chemical degradation can lead to crash of the whole fuel cell system.Proton exchange membranes with enhanced chemical durability can be fabricated via the addition of free radical scavengers. Free radical scavengers are a series of compounds that can react with harmful radicals preferentially than ionomers, with the membranes protected. This review presents the free radical scavengers that had been applied to proton exchange membranes. The mechanisms of the additives in scavenging radicals are discussed in detail. Meanwhile, the challenges and drawbacks of free radical scavengers need to be addressed are also highlight.

关键词： Fuel cell Proton exchange membrane Lifetime Chemical degradation Free radical scavenger

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