Exploring Ecological Land Reclamation to Promote the Ecological Civilization Construction in China

Huang, Guo Zhu; Zhu, Tong; Hu, Jun; Wen, Tie; Ji, Yi

doi:10.4028/www.scientific.net/amr.1073-1076.2648

Cited by 3 publications

(4 citation statements)

References 6 publications

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“…Different types of guests, including neutral molecules 10,11 such as acetonitrile 12 , and various ions 13,14 , have been reported. The 5,11,17,23-Tetra-tert-butyl-25,27-bis(cyanomethoxy)-26,28-dihidroxycalix [4] arene (1) (dicyanocalix [4]arene) corresponds to p-tertbutylcalix [4]arene having a nitrile group 1,3-distal in its lower rim part 2 . This calixarene derivative can be obtained as a single crystal 15 because of their organization forming a supramolecular assembly due to different interactions, such as hydrogen bonds and CH-π interactions with dicyanocalix [4]arenes neighbors 16 .…”

Section: Introductionmentioning

confidence: 99%

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Nanodecoration of Single Crystals of 5,11,17,23-Tetra-Tert-Butyl-25,27-Bis(cyanomethoxy)-26, 28-Dihydroxycalix[4]arene

Moris

Silva

Saitz

et al. 2017

J. Chil. Chem. Soc.

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Single crystals of 1,3-bis(cyanomethoxy)calix [4]arene (1) were grown from Chloroform/Methanol mixture and these were nanodecorated with colloidal gold nanoparticles (AuNps). The single crystals were then characterized by single-crystal X-ray diffraction (XRD) and Scanning Electronic Microscopy (SEM). The nanodecorated crystals were characterized by UV-Visible Absorption Spectroscopy, Transmission Electronic Microscopy (TEM) and X-ray Photoelectron Spectroscopy (XPS). In this work, it is shown that the stabilization of the nanoparticles occurs through of the interactions of these with the nitrile group, maintaining their shape and size. . This supramolecular arrangement allows the attachment of gold nanoparticles (AuNPs) on the surface of a single crystal, maintaining their shape and size. KeywordsAs well as in cyclodextrin 17 and other supramolecular macrocycles 18 , nanodecoration of these compounds would allow the manufacturing of nanoscale devices with potential applications as sensors, switches and new materials having tunable properties 19,20 . In this work, we present the supramolecular analysis of dicyanocalix [4] arene, and the confirmation of the stabilization of nanoparticles by functional -CN group responsible for the formation of the crystal-nanodecoration. 2.MATERIAL AND METHODS Reagents and instrumentsAll the reagents used were of analytical reagent grade. p-tert-butylcalix [4] arene and gold chloride trihydrate (HAuCl 4 .3H 2 O) (Aldrich, >99%), Na 3 C 6 H 5 O 7 (Sigma-Aldrich), and nanopure water (Merck, Darmstadt, Germany). All Solvents employed for synthesis were commercially available and used as received without further purification. TEM was performed using a Zeiss model EM-109 microscope (Jena, Germany) operating at 80 kV (IBEC, Barcelona, Spain). SEM images were obtained using a high-resolution NOVA NanoSEM 230 instrument (FEI Company) equipped with an energy-dispersive detector.Single-Crystal XRD data were collected at room temperature using a Bruker Kappa CCD diffractometer with graphite-monochromatized MoKα radiation (λ=0.71073 Å). A Shimadzu UV-3101PC spectrophotometer (Shimadzu, Kyoto, Japan) was used. Spectra were recorded between 400 and 700 nm for colloidal nanoparticles. The diffuse reflectance results were converted into absorbance units using Kubelka-Munk conversion for de solid-state compounds.XPS spectra were recorded using a photoelectron spectrometer model 1257 (Perkin Elmer, Physical Electronic Division, Eden Prairie, MN, USA), fitted with an ultra-high-vacuum main chamber, a hemispherical electron analyzer, and an X-ray source that provided unfiltered Al Kα radiation. Energy calibration was accomplished by assigning a binding energy of 284.8 eV to the C 1s peak of adventitious carbon 21 . 5,11,17, Synthesis of arene (1)This compound is obtained as described by Zhang 2 . Single-crystals were obtained from a solution of (1) (0.6 mmol) in boiling chloroform (0.5 mL) with hot methanol added dropwise (1 mL). This solution was left for one week, at which point laminar c...

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Section: Introductionmentioning

confidence: 99%

“…Calix[n]arenes adopt a basket-shaped conformation in their solid state, with a ring size which depends on the base used 2 . These macrocycles have been the subject of a variety of studies because of their interesting and technologically useful properties [3][4] .…”

Section: Introductionmentioning

confidence: 99%

Nanodecoration of Single Crystals of 5,11,17,23-Tetra-Tert-Butyl-25,27-Bis(cyanomethoxy)-26, 28-Dihydroxycalix[4]arene

Moris

Silva

Saitz

et al. 2017

J. Chil. Chem. Soc.

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“…Chinese farmers' attachment to land is deeply influenced by traditional culture. Changes in agricultural land systems have enhanced farmers' perceptions of the short-term economic value of land, and egoistic values may lead farmers to adopt production behaviors that undermine the sustainability of arable land resources (Zheng et al, 2020) [17]. Awasthi et al (2014) noted that in recent decades, although developing countries have achieved economic diversification and significant growth, agricultural land remains the main pillar of the livelihood system of the poor, who have strong perceptions of the economic value of agricultural land [18].…”

Section: Introductionmentioning

confidence: 99%

Effect of Farmers’ Perceptions of Sustainable Development Value on Their Willingness for Agricultural Land Secured Financing

Kan

Liu

et al. 2022

Sustainability

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Farmers’ perceptions of land value determine how land is used, which, in turn, can affect the ecological protection and sustainable development of land resources. This study constructed an index system of farmers’ perceptions of the sustainable development value of agricultural land in four aspects: economic value, security value, ecological value, and emotional value. Using data from 1652 farm households in Shaanxi Province, China, we empirically analyzed the influence of farmers’ perceptions of sustainable development value on their intention to obtain financing secured by agricultural land. Farmers’ perceptions of sustainable development value were found to have a significant negative effect on their willingness for agricultural land secured financing, and social capital played a negative moderating role in the relationship between the two. Further, we found differences between ordinary farmers and new management entities in their value perceptions of agricultural land; thus, there was heterogeneity in the effect on intention to obtain financing secured by agricultural land. Based on the findings, we suggested ways to promote the market development of agricultural land financing, including guiding farmers to form sustainable perceptions of agricultural land value, and innovating mortgages secured by agricultural land with new management entities as the main demanders.

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“…Compared to the popular eco-city construction worldwide, China has innovatively implemented eco-province construction (EPC), which is a relatively largerscale ecological construction initiative for regional sustainable development [9][10][11]. The EPC initiative was started at the end of last century, and now has become not only an important approach for sustainable development at the regional level but also the carrier of ecological civilization construction [12][13][14]. China's State Environmental Protection Administration (SEPA), now elevated to Ministry of Environmental Protection, has approved 16 provinces as EPC plots, such as Hainan, Jilin, Fujian, Shandong, Jiangsu, and so on.…”

Section: Introductionmentioning

confidence: 99%

Eco-Province Construction Performance and Its Influencing Factors of Shandong Province in China: From Regional Eco-Efficiency Perspective

et al. 2021

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Eco-province construction (EPC) innovated by China is an important approach for regional sustainable development. The core of this paper relates to how to quantitatively evaluate EPC performance and explore its influencing factors. We propose regional total-factor eco-efficiency as a proxy of EPC performance and apply the methods of the SBM directional distance function, the Theil index, hot-spot analysis, and the Tobit model to investigate spatial-temporal evolutionary characteristics and influencing factors of Shandong’s EPC performance from 2003 to 2017. The results showed that: (1) The EPC performance of Shandong presented a fluctuating rising trend as a whole and was unbalanced among regions with gradient-descending characteristics from the eastern, central to western regions. (2) The gravity center of Shandong’s EPC performance shifted northwards, eastwards, southwards, and westwards successively; the spatial pattern of regional EPC performance evolved from characteristics of high- and low-dispersion distribution in the initial stage to a significant H-shaped spatial conglomeration with hot spots distributed in Binzhou and Yantai and cold spots in the southern region. (3) A U-shaped environmental Kuznets curve existed between economic development level and Shandong’s EPC performance. Shandong’s EPC performance was positively related to R&D intensity while negatively related to urbanization. The impact of industrial structure, openness, and environmental regulation on Shandong’s EPC performance presented spatial heterogeneity. Shandong should establish a cross-regional collaborative governance mechanism of ecological construction and implement an ecological-innovation-driven development strategy to promote EPC performance.

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Exploring Ecological Land Reclamation to Promote the Ecological Civilization Construction in China

Cited by 3 publications

References 6 publications

Nanodecoration of Single Crystals of 5,11,17,23-Tetra-Tert-Butyl-25,27-Bis(cyanomethoxy)-26, 28-Dihydroxycalix[4]arene

Nanodecoration of Single Crystals of 5,11,17,23-Tetra-Tert-Butyl-25,27-Bis(cyanomethoxy)-26, 28-Dihydroxycalix[4]arene

Effect of Farmers’ Perceptions of Sustainable Development Value on Their Willingness for Agricultural Land Secured Financing

Eco-Province Construction Performance and Its Influencing Factors of Shandong Province in China: From Regional Eco-Efficiency Perspective

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