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Article ; Online: Nitrogen-doped Fe

Ye, Jian / Niu, Shuwen / Zhang, Leijie / Wang, Gongming / Zhu, Junfa

Chemical communications (Cambridge, England)

2023 Volume 59, Issue 94, Page(s) 14013–14016

Abstract: The high unoccupied d band energy of ... ...

Abstract	The high unoccupied d band energy of FeS
Language	English
Publishing date	2023-11-23
Publishing country	England
Document type	Journal Article
ZDB-ID	1472881-3
ISSN	1364-548X ; 1359-7345 ; 0009-241X
ISSN (online)	1364-548X
ISSN	1359-7345 ; 0009-241X
DOI	10.1039/d3cc03376g
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Spatially Guided Assembly of Polyoxometalate Superlattices and Their Derivatives as High-Power Sodium-Ion Battery Anodes.

Wu, Yunping / Chen, Sheng / Bai, Caihe / Niu, Shuwen / Wei, Wei

ACS nano

2022

Abstract: The use of polyoxometalate clusters (POMs) with multitudinous structures and surface properties as building blocks has sparked the development of cluster-assembled materials with many prospective applications. In comparison to classic molecules and ... ...

Abstract	The use of polyoxometalate clusters (POMs) with multitudinous structures and surface properties as building blocks has sparked the development of cluster-assembled materials with many prospective applications. In comparison to classic molecules and assembly processes, control over the steric interactions and linkage of large POMs to achieve superlattices with multiple levels of organization remains a great challenge. This work presents a universal approach to modulate the spatial coordination behavior and configurations, and achieves a class of cluster superlattice architectures formed by linear alignment and two-dimensional arrangement of POM units. The formation mechanism is explained as a stepwise co-assembly pathway in which POMs can intervene and dictate a typical stripping-restacking combination mode with the lamellar mediator. These cluster superlattices with long-range POMs ordering impart distinct merits to their derivatives by sulfuration, for which we demonstrate the substantially promoted power and cycling life of these POM derivatives applied as sodium-ion battery anodes.
Language	English
Publishing date	2022-12-05
Publishing country	United States
Document type	Journal Article
ISSN	1936-086X
ISSN (online)	1936-086X
DOI	10.1021/acsnano.2c09796
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Article: Multi-Scenario Simulation Analysis of Grain Production and Demand in China during the Peak Population Period.

Wang, Xiang / Qiang, Wenli / Niu, Shuwen / Growe, Anna / Yan, Simin / Tian, Nan

Foods (Basel, Switzerland)

2022 Volume 11, Issue 11

Abstract: The transformation of dietary structure brought about by economic development in populous countries is expected to trigger an increase in grain demand, which will put enormous pressure on the grain supply in these nations and even globally. We simulated ... ...

Abstract	The transformation of dietary structure brought about by economic development in populous countries is expected to trigger an increase in grain demand, which will put enormous pressure on the grain supply in these nations and even globally. We simulated nine demand scenarios for 2020-2050 based on China's dataset for 15 kinds of grains from 1961-2018. The results show that the maximum difference between the predicted grain demand is 323.8 Mt, equal to the total grain consumption of approximately 600 million Chinese people in one year. To capture which demand scenarios will be met when grain productivity gradually improves within reasonable ranges, we present three projections from the production side. In particular, Projection 1 (P1), which maintains productivity at the current level, only fulfills the projected demand for Scenarios 1-LL, 2-LM, 4-ML, and 7-HL and falls short of the maximum value (Scenario 9-HH) by 117 Mt, which requires an additional 250,000 ha of arable land resources to fill the gap. After raising the preset value of grain yield, the productivity of Projection 2 in turn satisfies the demand scenario 5-MM. When both set variables (grain yields and arable area) increase simultaneously, the output of Projection 3 increases by 15.3% over P1. However, it still lags behind the demand of 68 million tons in Scenario 9-HH, thus implying uncertainty in China's vision of meeting the goal of 95% grain self-sufficiency. Rather than pursuing a single outcome, we discuss multiple possibilities for China's future grain balance and emphasize the adjusting and compensating role of grain trade and storage in the whole system. Ultimately, this paper calls for a better understanding of the supply-demand gap therein and its future trends to support national grain security as well as global sustainable food policies.
Language	English
Publishing date	2022-05-26
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2704223-6
ISSN	2304-8158
ISSN	2304-8158
DOI	10.3390/foods11111566
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Article: Spatial difference analysis of residential energy consumption, income and carbon emissions in China

Ding, Yongxia / Niu, Shuwen

International journal of energy sector management : IJESM Vol. 11, No. 4 , p. 541-556

2017 Volume 11, Issue 4, Page(s) 541–556

Author's details	Yongxia Ding and Shuwen Niu
Keywords	CO2 emission ; Regression ; Income ; Co-integration ; Panel data model ; Residential energy consumption
Language	English
Publisher	Emerald
Publishing place	Bingley
Document type	Article
ZDB-ID	2364730-9
ISSN	1750-6220
Database	ECONomics Information System

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Article: Identifying the Geography and Determinants of O2O Online Retailers in Megacity in Central China: A Case Study of Zhengzhou City

Qi, Jinghui / Niu, Shuwen / Ye, Chenxi / Wang, Luojia / Wei, Yongna / Wen, Yuzhao / Zhao, Shuling

Chinese geographical science. 2021 Oct., v. 31, no. 5

2021

Abstract: In recent years, O2O e-commerce, represented by online group-buying, has developed vigorously, which had significant impacts on urban commercial space. Zhengzhou City is a rising national central city in China, and its e-commerce development level is ... ...

Abstract	In recent years, O2O e-commerce, represented by online group-buying, has developed vigorously, which had significant impacts on urban commercial space. Zhengzhou City is a rising national central city in China, and its e-commerce development level is ahead, but relevant researches are rare. Therefore, the data of online retailers of Meituan.com was collected and combined with Baidu map and Baidu heat map data. Then, we adopted the methods such as spatial statistics and geodetector to explore the geography and determinants of O2O online retailers in Zhengzhou urban area. The main conclusions are 1) The spatial development of O2O online retailers is characterized by significant global high-value agglomeration. 2) The agglomeration areas of different types of O2O online retailers are different. Most of them are concentrated in the old urban area within the Third Ring Road of Zhengzhou City, forming five comprehensive agglomeration areas. 3) The areas with the high e-commerce development level are mainly concentrated in the northeast and southwest of the x-shaped region formed by the intersection of Lianyungang-Lanzhou and Beijing-Guangzhou railways. Erqi Square and Guomao 360 Plaza are at the highest development level, followed by Zhongyuan Wanda Plaza and Daxue Middle Road. The development level at other areas is relatively low. 4) Zhengzhou’s O2O commercial pattern is highly dependent on physical business. The population distribution, especially the population distribution during the nightlife period, plays a vital role in its spatial development, followed by accessibility. The influences of physical distance are slightly larger than that of time cost, but the difference between them is little. In addition, travelling costs have the least impact. This paper could provide certain references for urban commercial planning.
Keywords	case studies ; cities ; e-commerce ; geography ; heat ; population distribution ; statistics ; urban areas ; China
Language	English
Dates of publication	2021-10
Size	p. 931-950.
Publishing place	Science Press
Document type	Article
ZDB-ID	2268241-7
ISSN	1993-064X ; 1002-0063
ISSN (online)	1993-064X
ISSN	1002-0063
DOI	10.1007/s11769-021-1212-x
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Article ; Online: Unveiling the nature of Pt-induced anti-deactivation of Ru for alkaline hydrogen oxidation reaction.

Fang, Yanyan / Wei, Cong / Bian, Zenan / Yin, Xuanwei / Liu, Bo / Liu, Zhaohui / Chi, Peng / Xiao, Junxin / Song, Wanjie / Niu, Shuwen / Tang, Chongyang / Liu, Jun / Ge, Xiaolin / Xu, Tongwen / Wang, Gongming

Nature communications

2024 Volume 15, Issue 1, Page(s) 1614

Abstract: While Ru owns superior catalytic activity toward hydrogen oxidation reaction and cost advantages, the catalyst deactivation under high anodic potential range severely limits its potential to replace the Pt benchmark catalyst. Unveiling the deactivation ... ...

Abstract	While Ru owns superior catalytic activity toward hydrogen oxidation reaction and cost advantages, the catalyst deactivation under high anodic potential range severely limits its potential to replace the Pt benchmark catalyst. Unveiling the deactivation mechanism of Ru and correspondingly developing protection strategies remain a great challenge. Herein, we develop atomic Pt-functioned Ru nanoparticles with excellent anti-deactivation feature and meanwhile employ advanced operando characterization tools to probe the underlying roles of Pt in the anti-deactivation. Our studies reveal the introduced Pt single atoms effectively prevent Ru from oxidative passivation and consequently preserve the interfacial water network for the critical H* oxidative release during catalysis. Clearly understanding the deactivation nature of Ru and Pt-induced anti-deactivation under atomic levels could provide valuable insights for rationally designing stable Ru-based catalysts for hydrogen oxidation reaction and beyond.
Language	English
Publishing date	2024-02-22
Publishing country	England
Document type	Journal Article
ZDB-ID	2553671-0
ISSN	2041-1723 ; 2041-1723
ISSN (online)	2041-1723
ISSN	2041-1723
DOI	10.1038/s41467-024-45873-0
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Article ; Online: Ruthenium Nanoclusters and Single Atoms on α-MoC/N-Doped Carbon Achieves Low-input/Input-free Hydrogen Evolution via Decoupled/Coupled Hydrazine Oxidation.

Li, Yapeng / Niu, Shuwen / Liu, Peigen / Pan, Rongrong / Zhang, Huaikun / Ahmad, Nazir / Shi, Yi / Liang, Xiao / Cheng, Mingyu / Chen, Shenghua / Du, Junyi / Hu, Maolin / Wang, Dingsheng / Chen, Wei / Li, Yadong

Angewandte Chemie (International ed. in English)

2024 , Page(s) e202316755

Abstract: The hydrazine oxidation-assisted H2 evolution method promises low-input and input-free hydrogen production. However, developing high-performance catalysts for hydrazine oxidation (HzOR) and hydrogen evolution (HER) is challenging. Here, we introduce a ... ...

Abstract	The hydrazine oxidation-assisted H2 evolution method promises low-input and input-free hydrogen production. However, developing high-performance catalysts for hydrazine oxidation (HzOR) and hydrogen evolution (HER) is challenging. Here, we introduce a bifunctional electrocatalyst α-MoC/N-C/RuNSA, merging ruthenium (Ru) nanoclusters (NCs) and single atoms (SA) into cubic α-MoC nanoparticles-decorated N-doped carbon (α-MoC/N-C) nanowires, through electrodeposition. The composite showcases exceptional activity for both HzOR and HER, requiring -80 mV and -9 mV respectively to reach 10 mA cm-2. Theoretical and experimental insights confirm the importance of two Ru species for bifunctionality: NCs enhance the conductivity, and its coexistence with SA balances the H adsorption for HER and facilitates the initial dehydrogenation during the HzOR. In the overall hydrazine splitting (OHzS) system, α-MoC/N-C/RuNSA excels as both anode and cathode materials, achieving 10 mA cm-2 at just 64 mV. The zinc hydrazine (Zn-Hz) battery assembled with α-MoC/N-C/RuNSA cathode and Zn foil anode can exhibit 96% energy efficiency, as well as temporary separation of hydrogen gas during the discharge process. Therefore, integrating Zn-Hz with OHzS system enables self-powered H2 evolution, even in hydrazine sewage. Overall, the amalgamation of NCs with SA achieves diverse catalytic activities for yielding multifold hydrogen gas through advanced cell-integrated-electrolyzer system.
Language	English
Publishing date	2024-05-13
Publishing country	Germany
Document type	Journal Article
ZDB-ID	2011836-3
ISSN	1521-3773 ; 1433-7851
ISSN (online)	1521-3773
ISSN	1433-7851
DOI	10.1002/anie.202316755
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Article: Research on Potential Evaluation and Sustainable Development of Rural Biomass Energy in Gansu Province of China

Zhong, Sheng / Niu, Shuwen / Wang, Yipeng

Sustainability. 2018 Oct. 20, v. 10, no. 10

2018

Abstract: The development and utilization of renewable energy is an important way to solve the environmental dilemma. Biomass energy is a kind of renewable energy and one of the most widely distributed and easily accessible energy forms. It has currently become a ... ...

Abstract	The development and utilization of renewable energy is an important way to solve the environmental dilemma. Biomass energy is a kind of renewable energy and one of the most widely distributed and easily accessible energy forms. It has currently become a main direction of renewable energy development. This paper took Gansu Province of China as the research object to calculate its theoretical reserves of biomass energy resources and then evaluate its potential of biomass energy development by using TOPSIS method under different agricultural development and geographical environmental conditions. Spatial autocorrelation analysis was also performed to reveal the spatial distribution and temporal evolution of the potential of biomass energy development in Gansu Province. The results show that: (1) The total reserves of biomass energy resources from agricultural wastes in Gansu Province reach 7.28 × 107 t/year, with equivalent biogas production of about 1.95 × 1010 m3/year. (2) In most counties of Gansu Province, the C<inf>i</inf> value is smaller than 0.5000, indicating that the potential of biomass energy development is relatively low in Gansu Province. (3) The spatial agglomeration of biomass energy development potential occurs mainly in the Hexi area, the Gannan area and the Loess Plateau area of East Gansu Province. (4) There is an area with obvious high-low (H-L) agglomeration of biomass energy development potential to the north-west side of the Gannan area with low-low (L-L) agglomeration of biomass energy development potential. It is a key zone to help drive biomass energy development in the Gannan area. (5) The spatial range of positive correlation (high-high and low-low agglomeration) areas shrunk during the evaluation period.
Keywords	agricultural development ; agricultural wastes ; autocorrelation ; bioenergy ; energy ; environmental factors ; gas production (biological) ; sustainable development ; China
Language	English
Dates of publication	2018-1020
Publishing place	Multidisciplinary Digital Publishing Institute
Document type	Article
ZDB-ID	2518383-7
ISSN	2071-1050
ISSN	2071-1050
DOI	10.3390/su10103800
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Article: Trends in global virtual land trade in relation to agricultural products

Qiang, Wenli / Bie, Qiang / Cheng, Shengkui / Kastner, Thomas / Liu, Aimin / Niu, Shuwen / Wang, Xiang

Land use policy. 2020 Mar., v. 92

2020

Abstract: Trade volume of agricultural products can be used to quantify the virtual land transfers between countries. This study assessed the virtual land trade (VLT) associated with the global trade of agricultural products using specific crop yield of exporting ... ...

Abstract	Trade volume of agricultural products can be used to quantify the virtual land transfers between countries. This study assessed the virtual land trade (VLT) associated with the global trade of agricultural products using specific crop yield of exporting countries and gave insights in characteristics of different products and different countries. In addition, the features of trade connections were also displayed by network analysis. The results showed that the total virtual land within global agricultural trade increased from 128 million hectare (ha) in 1986 to 350 million ha in 2016, the average annual growth rate was 5.73 %. Increases in trade of oil crops contributed the largest share to this. The proportion of exported land area in total harvested land area increased for almost all categories of agricultural products. Countries engaged in global agricultural trade could be divided into three groups, net exporters, net importers and countries with balanced VLT. The net importers could be further divided into the countries with absolutely scarce land resources and the countries with relative scarce resources. All net virtual land exporters are the countries with more land resources per capita, such as the United States, Brazil and Argentina. Income growth and changes in diet structure are main factors driving increases in VLT. The VLT network became more complex over the study period, with the number of import and export nodes increasing continuously, and the cumulative distributions of export and import node strength following power law distributions. The major links and players within national, geographic, and economic groups also changed significantly over the study period. VLT has a deep impact on society, economy and environment, appropriate policies should be taken to make these interlinkages more sustainable for both importers and exporters.
Keywords	agricultural products ; agricultural trade ; crop yield ; diet ; exports ; imports ; income ; international trade ; issues and policy ; land resources ; oil crops ; Argentina ; Brazil ; United States
Language	English
Dates of publication	2020-03
Publishing place	Elsevier Ltd
Document type	Article
ZDB-ID	852476-2
ISSN	0264-8377
ISSN	0264-8377
DOI	10.1016/j.landusepol.2019.104439
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Reversing the Nucleophilicity of Active Sites in CoP

Niu, Shuwen / Fang, Yanyan / Rao, Dewei / Liang, Guangjie / Li, Senyang / Cai, Jinyan / Liu, Bo / Li, Jianming / Wang, Gongming

Small (Weinheim an der Bergstrasse, Germany)

2022 Volume 18, Issue 14, Page(s) e2106870

Abstract: Precisely constructing the local configurations of active sites to achieve on-demand catalytic functions is highly critical yet challenging. Herein, an anion-deficient strategy to precisely capture Ru single atoms on the anion vacancies of ... ...

Abstract	Precisely constructing the local configurations of active sites to achieve on-demand catalytic functions is highly critical yet challenging. Herein, an anion-deficient strategy to precisely capture Ru single atoms on the anion vacancies of CoP
MeSH term(s)	Catalysis ; Catalytic Domain ; Electrons ; Hydrogen ; Water
Chemical Substances	Water (059QF0KO0R) ; Hydrogen (7YNJ3PO35Z)
Language	English
Publishing date	2022-02-15
Publishing country	Germany
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2168935-0
ISSN	1613-6829 ; 1613-6810
ISSN (online)	1613-6829
ISSN	1613-6810
DOI	10.1002/smll.202106870
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