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Article ; Online: The Optimal Path for China to Achieve the “Dual Carbon” Target from the Perspective of Energy Structure Optimization

Qi Jiang / Zhigang Yin

Sustainability, Vol 15, Iss 10305, p

2023 Volume 10305

Abstract: Exploring the path of energy structure optimization to reduce carbon emissions and achieve a carbon peak has important policy implications for achieving the “Dual Carbon” target. To this end, this paper explores the optimal path for China to achieve the “ ...

Abstract	Exploring the path of energy structure optimization to reduce carbon emissions and achieve a carbon peak has important policy implications for achieving the “Dual Carbon” target. To this end, this paper explores the optimal path for China to achieve the “dual carbon” target from the perspective of energy structure optimization in three steps: (1) we forecast China’s carbon emissions and carbon intensity during 2024–2035 based on a combined forecasting model; (2) we simulate the development of energy consumption and carbon emissions under the “economic development scenario-energy structure scenario” with the help of Markov chain forecasting model; (3) we construct a multi-attribute decision model to account for the above elements as variables to calculate a composite index to analyze the optimal path for China to achieve “Dual Carbon” target under different decision preferences. It is found that (1) potential negative effects caused by COVID-19 are not as serious as reported; (2) only the scenario with low-speed economic growth and effective policies guiding, which doesn’t follow laws of social development, can contribute to reaching carbon peaking by 2030 while maintaining a high-quality carbon intensity; (3) the optimal path that scenario with middle-speed economic growth and strict cost control is a sub-optimal choice subject to realities; (4) technologies innovations in green or low-carbon fields are needed to accelerate energy consumption structure optimization.
Keywords	energy structure optimization ; “dual carbon” target ; optimal path ; multi-attribute decision making ; Environmental effects of industries and plants ; TD194-195 ; Renewable energy sources ; TJ807-830 ; Environmental sciences ; GE1-350
Subject code	541
Language	English
Publishing date	2023-06-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Atomic Layer Deposition of Metal Oxides and Chalcogenides for High Performance Transistors

Chengxu Shen / Zhigang Yin / Fionn Collins / Nicola Pinna

Advanced Science, Vol 9, Iss 23, Pp n/a-n/a (2022)

2022

Abstract: Abstract Atomic layer deposition (ALD) is a deposition technique well‐suited to produce high‐quality thin film materials at the nanoscale for applications in transistors. This review comprehensively describes the latest developments in ALD of metal ... ...

Abstract	Abstract Atomic layer deposition (ALD) is a deposition technique well‐suited to produce high‐quality thin film materials at the nanoscale for applications in transistors. This review comprehensively describes the latest developments in ALD of metal oxides (MOs) and chalcogenides with tunable bandgaps, compositions, and nanostructures for the fabrication of high‐performance field‐effect transistors. By ALD various n‐type and p‐type MOs, including binary and multinary semiconductors, can be deposited and applied as channel materials, transparent electrodes, or electrode interlayers for improving charge‐transport and switching properties of transistors. On the other hand, MO insulators by ALD are applied as dielectrics or protecting/encapsulating layers for enhancing device performance and stability. Metal chalcogenide semiconductors and their heterostructures made by ALD have shown great promise as novel building blocks to fabricate single channel or heterojunction materials in transistors. By correlating the device performance to the structural and chemical properties of the ALD materials, clear structure–property relations can be proposed, which can help to design better‐performing transistors. Finally, a brief concluding remark on these ALD materials and devices is presented, with insights into upcoming opportunities and challenges for future electronics and integrated applications.
Keywords	atomic layer deposition ; electronics ; metal chalcogenides ; metal oxides ; transistors ; Science ; Q
Subject code	600
Language	English
Publishing date	2022-08-01T00:00:00Z
Publisher	Wiley
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Direct growth of hexagonal boron nitride films on dielectric sapphire substrates by pulsed laser deposition for optoelectronic applications

Gaokai Wang / Jingren Chen / Junhua Meng / Zhigang Yin / Ji Jiang / Yan Tian / Jingzhen Li / Jinliang Wu / Peng Jin / Xingwang Zhang

Fundamental Research, Vol 1, Iss 6, Pp 677-

2021 Volume 683

Abstract: Recently, hexagonal boron nitride (h-BN), an ultra-wide bandgap semiconductor, has attracted considerable attention owing to its excellent properties. In thin films grown on metal catalysts, contamination and damage induced by a transfer process cannot ... ...

Abstract	Recently, hexagonal boron nitride (h-BN), an ultra-wide bandgap semiconductor, has attracted considerable attention owing to its excellent properties. In thin films grown on metal catalysts, contamination and damage induced by a transfer process cannot be avoided. Therefore, synthesizing h-BN films on non-catalytic dielectric substrates is desirable for electronic applications. In this study, we demonstrate the direct growth of high-quality h-BN films with a controllable thickness on sapphire substrates by using the pulsed laser deposition (PLD) technique. The effects of the deposition conditions and laser parameters on the growth of the h-BN films are systematically investigated by evaluating their characteristic Raman peaks. Among the various growth parameters studied, the substrate temperature has the greatest influence on the crystalline quality of the h-BN films, and the optimal pressure varies depending on the target-substrate distance. The h-BN film grown under optimal conditions exhibits a narrow Raman line width of ∼30 cm−1, indicating a high crystalline quality. The photodetectors fabricated from the PLD-grown h-BN films exhibit superior deep-ultraviolet detection performance with a large on/off ratio of >104, high photoresponsivity, and a sharp cut-off wavelength of 220 nm. This study presents the possibility of producing high-quality h-BN films by applying PLD on dielectric substrates for optoelectronic applications.
Keywords	Hexagonal boron nitride ; Pulsed laser deposition ; Raman spectroscopy ; Photodetectors ; Science (General) ; Q1-390
Subject code	530 ; 620
Language	English
Publishing date	2021-11-01T00:00:00Z
Publisher	KeAi Communications Co. Ltd.
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: A facile method of transforming FGD gypsum to α-CaSO4·0.5H2O whiskers with cetyltrimethylammonium bromide (CTAB) and KCl in glycerol-water solution

Qingjun Guan / Wei Sun / Yuehua Hu / Zhigang Yin / Changping Guan

Scientific Reports, Vol 7, Iss 1, Pp 1-

2017 Volume 11

Abstract: Abstract A facile method to transform flue gas desulfurization gypsum (FGD gypsum) to α- calcium sulfate hemihydrate (α-HH) whiskers with high aspect ratios mediated by cetyltrimethylammonium bromide (CTAB) and KCl in glycerol-water solutions was studied. ...

Abstract	Abstract A facile method to transform flue gas desulfurization gypsum (FGD gypsum) to α- calcium sulfate hemihydrate (α-HH) whiskers with high aspect ratios mediated by cetyltrimethylammonium bromide (CTAB) and KCl in glycerol-water solutions was studied. Addition of KCl facilitated the dissolution of calcium sulfate dihydrate (DH) and created a much higher supersaturation, which could come into being a larger driving force for the phase transformation from DH to α-HH. CTAB as the crystal modifier can significantly promoted 1-D growth of α-HH whiskers along the c axis and the presence of 0.25% CTAB (by weight of FGD gypsum) resulted in the increase of the average aspect ratio of α-HH whiskers from 28.9 to 188.4, which might be attributed to the preferential adsorption of C16H33(CH3)3N+ on the negative side facets of α-HH crystal.
Keywords	Medicine ; R ; Science ; Q
Language	English
Publishing date	2017-08-01T00:00:00Z
Publisher	Nature Portfolio
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Adsorption of a novel reagent scheme on scheelite and calcite causing an effective flotation separation

Gao, Yuesheng / Jianjun Wang / Wei Sun / Yuehua Hu / Zhigang Yin / Zhiyong Gao

Journal of colloid and interface science. 2018 Feb. 15, v. 512

2018

Abstract: The efficient separation of scheelite from calcium-bearing minerals, especially calcite, remains a challenge in practice. In this work, a novel reagent scheme incorporating a depressant of sodium hexametaphosphate (SHMP) and a collector mixture of octyl ... ...

Abstract	The efficient separation of scheelite from calcium-bearing minerals, especially calcite, remains a challenge in practice. In this work, a novel reagent scheme incorporating a depressant of sodium hexametaphosphate (SHMP) and a collector mixture of octyl hydroxamic acid (HXMA-8) and sodium oleate (NaOl) was employed in both single and mixed binary mineral flotation, and it proved to be highly effective for the separation. Furthermore, the role of the pH value in the separation was evaluated. Additionally, the mechanism of the selective separation was investigated systemically via zeta potential measurements, fourier transform infrared (FTIR) spectroscopy analysis, X-ray photoelectron (XPS) spectroscopy analysis and crystal chemistry calculations. It turns out that the selective chemisorption of SHMP on calcite (in the form of complexation between H2PO4−/HPO42− and Ca2+) over scheelite is ascribed to the stronger reactivity and higher density of Ca ions on the commonly exposed surfaces of calcite minerals. The intense adsorption of HXMA-8 on scheelite over calcite due to the match of the OO distances in WO42− of scheelite and CONHOH of HXMA-8 holds the key to the successful separation. We were also interested in warranting the previous claim that NaOl is readily adsorbed on both minerals via chemisorption. Our results provided valuable insights into the application of mixed collectors and an effective depressant for flotation separation.
Keywords	adsorption ; calcite ; calcium ; collectors ; Fourier transform infrared spectroscopy ; ions ; oleic acid ; pH ; sodium ; X-radiation ; X-ray photoelectron spectroscopy ; zeta potential
Language	English
Dates of publication	2018-0215
Size	p. 39-46.
Publishing place	Elsevier Inc.
Document type	Article
ZDB-ID	241597-5
ISSN	1095-7103 ; 0021-9797
ISSN (online)	1095-7103
ISSN	0021-9797
DOI	10.1016/j.jcis.2017.10.045
Database	NAL-Catalogue (AGRICOLA)

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Article: Selective adsorption of tannic acid on calcite and implications for separation of fluorite minerals

Zhang, Chenhu / Honghu Tang / Jiande Gao / Qingjun Guan / Sun Wei / Yuehua Hu / Zhigang Yin

Journal of colloid and interface science. 2018 Feb. 15, v. 512

2018

Abstract: Selective adsorption of tannic acid (TA) on calcite surfaces and the implications of this process for the separation of fluorite ore were studied by microflotation tests, surface adsorption experiments, zeta potential measurements, UV–vis analysis, and X- ...

Abstract	Selective adsorption of tannic acid (TA) on calcite surfaces and the implications of this process for the separation of fluorite ore were studied by microflotation tests, surface adsorption experiments, zeta potential measurements, UV–vis analysis, and X-ray photoelectron spectroscopy (XPS) analysis. The microflotation tests indicated that TA, when added before sodium oleate (NaOl), could selectively depress calcite from fluorite at pH 7. Surface adsorption experiments revealed that TA hinders the interaction of NaOl with calcite. The zeta potential of calcite became more negative with TA than with NaOl. However, the characteristic features of TA adsorption were not observed on fluorite, suggesting that the dominant adsorption sites are dissimilar on the fluorite and calcite surfaces in the pulp. UV–vis spectroscopy, XPS, and solution chemistry analysis were utilized to obtain a better understanding of the mechanism for selective adsorption of TA as well as the key factors determined by the Ca2+ and Ca(OH)+ components on the mineral surfaces. A possible adsorption mechanism along with an adsorption mode is proposed for the surface interaction between TA and calcite.
Keywords	adsorption ; calcite ; calcium ; oleic acid ; pH ; pulp ; sodium ; tannins ; ultraviolet-visible spectroscopy ; X-ray photoelectron spectroscopy ; zeta potential
Language	English
Dates of publication	2018-0215
Size	p. 55-63.
Publishing place	Elsevier Inc.
Document type	Article
ZDB-ID	241597-5
ISSN	1095-7103 ; 0021-9797
ISSN (online)	1095-7103
ISSN	0021-9797
DOI	10.1016/j.jcis.2017.10.043
Database	NAL-Catalogue (AGRICOLA)

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Article: Investigation of two-stage depressing by using hydrophilic polymer to improve the process of fluorite flotation

Zhang, Chenhu / Honghu Tang / Jiande Gao / Qingjun Guan / Wei Sun / Yuehua Hu / Zhigang Yin

Journal of cleaner production. 2018 Aug. 20, v. 193

2018

Abstract: Fluorite is a non-renewable mineral that is used for anhydrous hydrofluoric acid and aluminum fluoride purposes. In China, along with the excellent fluorite resource, which is over-exploited, many off-specification fluorites (CaF2 > 93, under 97%; SiO2 > ...

Abstract	Fluorite is a non-renewable mineral that is used for anhydrous hydrofluoric acid and aluminum fluoride purposes. In China, along with the excellent fluorite resource, which is over-exploited, many off-specification fluorites (CaF2 > 93, under 97%; SiO2 > 1.5%) are produced. Improving the grade of fluorite instead of costly technologies of the Buss and CHEMCO are conducted. To improve the grade of fluorite, an excessive amount of sodium silicate is commonly used. However, this approach cannot stably produce high-quality fluorite and result in excessive reagent consumption, poor selectivity and high-water content of the fluorite concentrate. To solve these problems, suitable hydrophilic polymer depressants, which are highly stable, safe, non-toxic, hydrophilic, biodegradable and low processing cost because of abundant in nature, are selected to replace sodium silicate. To make the study practical, the testing location chosen was in Chenzhou (Hunan, China) and was operated by Xinyuan mining Co. Ltd., the largest monolithic fluorite ore producer in Asia. Meanwhile, to prevent the above problems from occurring, the focus throughout this study was achieving separation in the flotation process through the successful occurrence of two sub-processes. The first process was desilicication using dextrin, and the second process was decalcification using tannin.A tech-economic assessment based on the pilot program showed that compared with sodium silicate, the new technology (dextrin + tannin) improved fluorite recovery by 19.23%, removal rate of CaCO3 by 13.43% and SiO2 by 8.93% and reduced production costs by $2914.8 per day. The technology (dextrin + tannin) produced an excellent result, simplifying the flow during fluorite flotation, which can led to a reduction in power consumption as well as reduction in production costs for each ton of 105% sulfuric acid of $3.24 (t/t) for the entire production chain lifecycle. The new technology was an efficient, economic and environmentally friendly and has widespread applications and promising market prospects.
Keywords	biodegradability ; calcium carbonate ; dextrins ; energy use and consumption ; fluorides ; hydrofluoric acid ; hydrophilicity ; markets ; mining ; production costs ; silica ; sodium silicate ; sulfuric acid ; technology ; China
Language	English
Dates of publication	2018-0820
Size	p. 228-235.
Publishing place	Elsevier Ltd
Document type	Article
ISSN	0959-6526
DOI	10.1016/j.jclepro.2018.05.055
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Genetic basis and network underlying synergistic roots and shoots biomass accumulation revealed by genome-wide association studies in rice

Yan Zhao / Zhigang Yin / Xueqiang Wang / Conghui Jiang / Muhammad Mahran Aslam / Fenghua Gao / Yinghua Pan / Jianyin Xie / Xiaoyang Zhu / Luhao Dong / Yanhe Liu / Hongliang Zhang / Jinjie Li / Zichao Li

Scientific Reports, Vol 11, Iss 1, Pp 1-

2021 Volume 15

Abstract: Abstract Genetic basis and network studies underlying synergistic biomass accumulation of roots and shoots (SBA) are conducive for rational design of high-biomass rice breeding. In this study, association signals for root weight, shoot weight, and the ... ...

Abstract	Abstract Genetic basis and network studies underlying synergistic biomass accumulation of roots and shoots (SBA) are conducive for rational design of high-biomass rice breeding. In this study, association signals for root weight, shoot weight, and the ratio of root-to-shoot mass (R/S) were identified using 666 rice accessions by genome-wide association study, together with their sub-traits, root length, root thickness and shoot length. Most association signals for root weight and shoot weight did not show association with their sub-traits. Based on the results, we proposed a top-to-bottom model for SBA, i.e. root weight, shoot weight and R/S were determined by their highest priority in contributing to biomass in the regulatory pathway, followed by a lower priority pathway for their sub-traits. Owing to 37 enriched clusters with more than two association signals identified, the relationship among the six traits could be also involved in linkage and pleiotropy. Furthermore, a discrimination of pleiotropy and LD at sequencing level using the known gene OsPTR9 for root weight, R/S and root length was provided. The results of given moderate correlation between traits and their corresponding sub-traits, and moderate additive effects between a trait and the accumulation of excellent alleles corresponding to its sub-traits supported a bottom-to-top regulation model for SBA. This model depicted each lowest-order trait (root length, root thickness and shoot length) was determined by its own regulation loci, and competition among different traits, as well as the pleiotropy and LD. All above ensure the coordinated development of each trait and the accumulation of the total biomass, although the predominant genetic basis of SBA is still indistinguishable. The presentation of the above two models and evidence of this study shed light on dissecting the genetic architecture of SBA.
Keywords	Medicine ; R ; Science ; Q
Subject code	580
Language	English
Publishing date	2021-07-01T00:00:00Z
Publisher	Nature Portfolio
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Insight into Influence of Glycerol on Preparing α-CaSO4·1/2H2O from Flue Gas Desulfurization Gypsum in Glycerol–Water Solutions with Succinic Acid and NaCl

Guan, Qingjun / Honghu Tang / Wei Sun / Yuehua Hu / Zhigang Yin

Industrial & engineering chemistry process design and development. 2017 Sept. 06, v. 56, no. 35

2017

Abstract: The conversion of CaSO4·2H2O (DH) to CaSO4·1/2H2O (HH) was facilitated by increasing glycerol content from 55% to 85% in glycerol–water mixtures; the average length and diameter of produced α-HH crystals decreased from 60.97 to 7.21 μm and from 15.21 to ... ...

Abstract	The conversion of CaSO4·2H2O (DH) to CaSO4·1/2H2O (HH) was facilitated by increasing glycerol content from 55% to 85% in glycerol–water mixtures; the average length and diameter of produced α-HH crystals decreased from 60.97 to 7.21 μm and from 15.21 to 5.17 μm, respectively, resulting in a decrease in the average aspect ratio from 4.06 to 1.41. The phase transformation was reduced dramatically from 30 to 3 h. As glycerol content increased in the mixtures, an increase in α-HH maximal relative supersaturation and decrease of ion diffusion rate were hypothesized as explanations for the morphology change in the alpha-hemihydrate (α-HH) produced. The kinematic feasibility of FGD gypsum transition to α-HH in the mixed solutions with the increase of glycerol should also be attributed to the enhancement of maximal relative supersaturation for α-HH precipitation.
Keywords	calcium sulfate ; crystals ; flue gas desulfurization ; glycerol ; gypsum ; phase transition ; process design ; sodium chloride ; succinic acid
Language	English
Dates of publication	2017-0906
Size	p. 9831-9838.
Publishing place	American Chemical Society
Document type	Article
ZDB-ID	1484436-9
ISSN	1520-5045 ; 0888-5885
ISSN (online)	1520-5045
ISSN	0888-5885
DOI	10.1021/acs.iecr.7b02067
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Enhancing the Photocurrent of Top-Cell by Ellipsoidal Silver Nanoparticles

Yiming Bai / Lingling Yan / Jun Wang / Lin Su / Zhigang Yin / Nuofu Chen / Yuanyuan Liu

Nanomaterials, Vol 6, Iss 6, p

Towards Current-Matched GaInP/GaInAs/Ge Triple-Junction Solar Cells

2016 Volume 98

Abstract: A way to increase the photocurrent of top-cell is crucial for current-matched and highly-efficient GaInP/GaInAs/Ge triple-junction solar cells. Herein, we demonstrate that ellipsoidal silver nanoparticles (Ag NPs) with better extinction performance and ... ...

Abstract	A way to increase the photocurrent of top-cell is crucial for current-matched and highly-efficient GaInP/GaInAs/Ge triple-junction solar cells. Herein, we demonstrate that ellipsoidal silver nanoparticles (Ag NPs) with better extinction performance and lower fabrication temperature can enhance the light harvest of GaInP/GaInAs/Ge solar cells compared with that of spherical Ag NPs. In this method, appropriate thermal treatment parameters for Ag NPs without inducing the dopant diffusion of the tunnel-junction plays a decisive role. Our experimental and theoretical results confirm the ellipsoidal Ag NPs annealed at 350 °C show a better extinction performance than the spherical Ag NPs annealed at 400 °C. The photovoltaic conversion efficiency of the device with ellipsoidal Ag NPs reaches 31.02%, with a nearly 5% relative improvement in comparison with the device without Ag NPs (29.54%). This function of plasmonic NPs has the potential to solve the conflict of sufficient light absorption and efficient carrier collection in GaInP top-cell devices.
Keywords	GaInP/GaInAs/Ge triple-junction solar cells ; Ag ellipsoidal nanoparticles ; thermal treatment parameters ; current-match ; Chemistry ; QD1-999
Subject code	620
Language	English
Publishing date	2016-05-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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