Article
Chemistry, Applied
Yuandong Yang, Shun Yao, Wenqiang Liu, Yingchao Hu, Qiuwan Li, Zexin Li, Shimeng Zhou, Zijian Zhou
Summary: It has been widely acknowledged that Li4SiO4-based adsorbents with smaller particle size and tailored structure will exhibit superior CO2 capture performance. This study proposed a novel two-phase synthesis method to produce micro-scale Li4SiO4-based adsorbents with ultrafast CO2 capture rate. Experimental results showed that the adsorbent calcined at 600 degrees C exhibited the best morphology, with hollow-structured microspheres with a uniform diameter of 1-2 μm, showing the fastest adsorption rate and highest adsorption capacity.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Chemistry, Physical
Zhen Wang, Qian Xu, Kun Peng, Zirui Wang, Xingli Zou, Hongwei Cheng, Xionggang Lu
Summary: The addition of Na2CO3 significantly improves the CO2 capture performance of Li4SiO4 by reducing the activation energy for adsorption and diffusion, while also enhancing stability in cyclic processes.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Physical
Alberto Gutierrez, Juan Antonio Tamayo-Ramos, Sonia Martel, Rocio Barros, Alfredo Bol, Fabiana Cristina Gennari, Pierre Arneodo Larochette, Mert Atilhan, Santiago Aparicio
Summary: Lithium silicates have potential as high-temperature sorbents for CO2 capture. This study investigates the properties and CO2 interaction of Li4SiO4 and Li3NaSiO4 using density functional theory. The results demonstrate strong chemisorption of CO2 on these materials, leading to changes in their structure and charge.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Yuandong Yang, Jixue Cao, Yingchao Hu, Jian Sun, Shun Yao, Qiuwan Li, Zexin Li, Shimeng Zhou, Wenqiang Liu
Summary: Eutectic doping is an efficient and economic method to modify Li4SiO4-based CO2 adsorbents. In this study, 12 molten salt dopants were systematically compared, with NaF identified as the optimal option due to its high capacity enhancement and cost-effectiveness. The performance of dopants was found to be strongly correlated with their eutectic temperature, influencing the modification effect on the adsorbents.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Multidisciplinary
Wenjing Yu, Qian Xu, Shenggang Li, Xiaolu Xiong, Hongwei Cheng, Xingli Zou, Xionggang Lu
Summary: The difference in CO2 adsorption performance between Li4SiO4 and Ca2SiO4 was revealed through density functional theory calculations. The results showed that the bent configuration of the adsorbed CO2 molecule parallel to the surface was the most thermodynamically favorable, and that Li4SiO4 had higher CO2 adsorption energy, stronger covalent bond, and more charge transfer compared to Ca2SiO4.
Article
Chemistry, Multidisciplinary
Zhengxiong Chen, Xinyu Wang, Jing Luo, Bowen Zhang, Fei Shen, Binbin Li, Jing Yang
Summary: In this study, rod-like hydroxyapatite modified with two different amino acids was synthesized, showing that amino acids can reduce the aspect ratio and crystallinity of hydroxyapatite, while exhibiting better biocompatibility and inhibitory effects on osteosarcoma cells.
Article
Materials Science, Multidisciplinary
Binod Bihari Palei, Tapan Dash, Susanta Kumar Biswal
Summary: Novel composites of Al-graphene were prepared using powder metallurgical processing method, and the microhardness and electrical conductivity of the composites were improved. The successful formation of Al and graphene composite was confirmed by various characterization techniques.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Chemistry, Inorganic & Nuclear
Yonatan Yevilevich, Leonid Vradman, Jonatan Zana, Ira A. Weinstock, Moti Herskowitz
Summary: The study investigates the synthesis of complex oxides in molten salt and finds that the duration and particle size of the product can be effectively controlled by adjusting the ratio of salt to reagent, providing valuable guidelines for tuning the synthesis conditions.
INORGANIC CHEMISTRY
(2022)
Review
Engineering, Multidisciplinary
Ola A. Mayhoub, El-Sayed A. R. Nasr, Yehia A. Ali, Mohamed Kohail
Summary: Reactive Powder Concrete is a type of ultra-high-performance concrete that focuses on improving microstructure, particle packing, and toughness properties. However, its production cost is high and not environmentally friendly.
AIN SHAMS ENGINEERING JOURNAL
(2021)
Article
Chemistry, Inorganic & Nuclear
Shumpei Iwasaki, Kosuke Shido, Takuya Hashimoto
Summary: The preparation of Li3NaSiO4 powder, which is used as a CO2 absorbent, was optimized in this study. It was found that using Li4SiO4, Li2SiO3, and Na2CO3 mixture as starting materials resulted in a higher purity Li3NaSiO4 powder with a larger surface area and homogeneous particle size, as well as a higher CO2 absorption capacity.
DALTON TRANSACTIONS
(2022)
Article
Engineering, Environmental
Eleonora Stefanelli, Sandra Vitolo, Monica Puccini
Summary: A novel single-step method for fabricating macro-porous K2CO3-doped Li4SiO4 pellets for CO2 capture at high temperature and low concentration of CO2 is proposed in this study. The obtained pellets showed high CO2 sorption capacity and good cycling stability.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Yichao Tong, Changlei Qin, Linyan Zhu, Shuzhen Chen, Zongze Lv, Jingyu Ran
Summary: The huge consumption of fossil fuels leads to excessive CO2 emissions, and its reduction has become an urgent worldwide concern. The combination of renewable energies with battery energy storage, and carbon capture, utilization, and storage are well acknowledged as two major paths in achieving carbon neutrality. This study proposes a route to synthesize low-cost Li4SiO4 as CO2 sorbents from spent LIBs, with verified technical feasibility and evaluated CO2 adsorption/desorption performance. The results demonstrate the superior capacity and cyclic stability of Li4SiO4 synthesized from spent LIBs, and the cost-effective nature of this method.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Xiaoling Zhang, Hongjun Li, Pengfei Xu, Ming Huang, Biao Xu, Yifeng Wang, Guodong Tang, Sen Yang
Summary: TiNiSn-based half-Heusler compounds are promising thermoelectric materials for waste heat recovery. The effects of metal particle dimensions on the thermoelectric properties were investigated and it was found that the oxidation and preparation process of nano-scale Cu powder led to lower electrical conductivity and inferior thermoelectric performance in TiNiCux, NSn compared to TiNiCux, MSn.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Energy & Fuels
Yingchao Hu, Ruicheng Fu, Ge Yu, Jixue Cao, Jingchun Huang
Summary: A novel Li4SiO4 sorbent synthesized using low-cost mineral material showed enhanced CO2 sorption rate and cyclic capacity. The sorbent's performance was improved by the addition of microcrystalline cellulose as a pore-forming material, which compensated for the reduction in sorption capacity caused by mechanical granulation. With its excellent mechanical strength, low cost, and scalable synthesis, this sorbent is a promising candidate for CO2 removal.
Article
Engineering, Chemical
Zongze Lv, Jiaqi Ruan, Weifeng Tu, Xun Hu, Donglin He, Xin Huang, Changlei Qin
Summary: Integrated carbon capture and utilization by methanation (ICCU-methanation) is achieved using a dual functional material (DFM) constructed with Li4SiO4 as sorbent and catalyst carrier, CeO2 as catalyst promoter and isolator, and Ni as catalytic metal. The developed DFM exhibits a high and stable CO2 capacity, high CO2 conversion, and high CH4 selectivity. Additionally, rapid CO2 dissociation from the DFM is observed at a temperature lower than 560 degrees C.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Physics, Multidisciplinary
Lei-Lei Tang, Shun-Ping Shi, Yong Song, Jia-Bao Hu, Kai Diao, Jing Jiang, Zhan-Jiang Duan, De-Liang Chen
Summary: Density functional theory (DFT) was used to investigate the stable structures and adsorption energy of Zr-n (n = 2-5) clusters with a single water molecule. The results showed a clear linear relationship between the adsorption energy and energy gaps of the clusters. Reaction path calculations revealed that the water molecule can react with the clusters to form Zr n O (n = 2-5), releasing hydrogen in exothermic reactions. Among the clusters, Zr-4 exhibited the highest reactivity with the water molecule. Natural population analysis (NPA) and density of states (DOS) provided insight into the hydrogen production and orbital properties, suggesting further reactivity of Zr n O (n = 2-5) with additional water molecules. This study enhances the understanding of Zr's chemical reactivity and its potential for catalysis and hydrogen production.
Article
Meteorology & Atmospheric Sciences
Andreas F. Prein, Nikolina Ban, Tinghai Ou, Jianping Tang, Koichi Sakaguchi, Emily Collier, Sanjay Jayanarayanan, Lu Li, Stefan Sobolowski, Xingchao Chen, Xu Zhou, Hui-Wen Lai, Shiori Sugimoto, Liwei Zou, Shabeh ul Hasson, Marie Ekstrom, Praveen Kumar Pothapakula, Bodo Ahrens, Romilly Stuart, Hans Christian Steen-Larsen, Ruby Leung, Danijel Belusic, Julia Kukulies, Julia Curio, Deliang Chen
Summary: The Tibetan Plateau, also known as the Third Pole, is an important freshwater source for Asia. However, due to challenges in weather and climate modeling, the future of this region remains highly uncertain. The Convection-Permitting Third Pole (CPTP) project aims to revolutionize our understanding of climate change impacts on the Tibetan Plateau through ensemble-based, kilometer-scale climate modeling.
Article
Environmental Sciences
Zhengyao Lu, Deliang Chen, Klaus Wyser, Ramon Fuentes-Franco, Stefan Olin, Qiong Zhang, Mousong Wu, Anders Ahlstrom
Summary: This study investigates the low-frequency variability of global vegetation and its connection to climate modes. The results show that the variability in vegetation greenness during the growing season is largely influenced by ENSO-d, PDO, and AMO climate modes, which have played a significant role in the greening of the Earth over the past decades.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Chao Fan, Hongyuan Yu, Yan Huang, Caifeng Shan, Liang Wang, Chenglong Li
Summary: In this paper, a novel Siamese Occlusion-aware Network (SiamON) model is proposed to address the challenges caused by occlusion in visual tracking. Soft masks are predefined to solve the limited occlusion sample problem, and a target-aware attention mechanism is introduced to weaken the impact of occlusion. Experimental results demonstrate that the proposed model outperforms state-of-the-art trackers, especially in the presence of occlusion, and achieves real-time performance.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY
(2023)
Article
Environmental Sciences
Teng Liu, Dean Chen, Lan Yang, Jun Meng, Zanchenling Wang, Josef Ludescher, Jingfang Fan, Saini Yang, Deliang Chen, Juergen Kurths, Xiaosong Chen, Shlomo Havlin, Hans Joachim Schellnhuber
Summary: We analyzed the global impacts of the Amazon Rainforest Area (ARA) using a climate network approach and found strong correlations between the ARA and regions such as the Tibetan Plateau and West Antarctic ice sheet. Models showed that the teleconnection propagation path between the ARA and the Tibetan Plateau remains robust under climate change. Additionally, we discovered that the snow cover extent on the Tibetan Plateau has been decreasing in stability since 2008. We also observed synchronized climate extremes between the ARA and the Tibetan Plateau under climate change. Our study highlights the interconnectedness of tipping elements and the potential predictability of cascading tipping dynamics.
NATURE CLIMATE CHANGE
(2023)
Article
Engineering, Multidisciplinary
Zuohua Fu, Hui Chen, Hui Peng, Wei Li, Deliang Chen, Zheng Meng, Hao Jie
Summary: As a new method, the instrumented sharp indentation technique is proposed for obtaining the surface residual stress of metallic materials. It is simple to use, applicable in-situ, and allows for measurements in the nano-to-macro range. The unified equivalent material indentation (UEMI) model is established to measure both equi-biaxial and uniaxial residual stresses within metallic structural materials. Only five parameters need to be calibrated via finite element analysis (FEA) in this model. The novel model is successfully verified using simulated materials from FEA and experimental data from seven metallic materials found in the references, showing good agreement with the pre-applied residual stress.
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
(2023)
Article
Engineering, Civil
Ximeng Xu, Xiaobo Yun, Qiuhong Tang, Huijuan Cui, Jie Wang, Lu Zhang, Deliang Chen
Summary: Climate change is expected to increase rainfall erosivity over the Lancang-Mekong River Basin, especially under high emission scenarios. Summer rainfall erosivity in June to August is projected to account for the majority of annual rainfall erosivity. These changes can provide insights into the risk of soil erosion under climate change in the region.
JOURNAL OF HYDROLOGY
(2023)
Review
Geosciences, Multidisciplinary
Julia Kukulies, Hui-Wen Lai, Julia Curio, Zhe Feng, Changgui Lin, Puxi Li, Tinghai Ou, Shiori Sugimoto, Deliang Chen
Summary: The climate system of the Third Pole region is highly sensitive to global warming, and mesoscale convective systems (MCSs) play a vital role in this system. The impact of MCSs on precipitation and flood risk in the downstream regions is significant, but there are methodological and regional differences in studying MCSs. By using a common framework, we can understand the characteristics, mechanisms, and impact of MCSs on seasonal and extreme precipitation in the region, and address knowledge gaps, such as the feedback of MCSs to the climate system, the impact of changing climate on MCS characteristics, and the assessment of flood and drought risks associated with changes in MCS frequency and intensity.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
Xiuping Li, Lei Wang, Baoyi Hu, Deliang Chen, Ruishun Liu
Summary: Mountains are important water sources for downstream areas, and their water resources are highly sensitive to climate change. Glacier retreat is the main cause of depletion in mountain water resources, but the contribution rate of glacier changes to total water storage changes is unknown. Globally, glacial melting accounted for about 49% of total water storage decline during 2006-2015. The contribution ranges from -23% to 728% in mountain regions and -21% to 99% in watersheds of the Third Pole and surroundings.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
Ying Hu, Weiyi Sun, Jian Liu, Deliang Chen, Liang Ning, Zhenghan Peng
Summary: The 11-year solar cycle has a significant impact on precipitation over the Tibetan Plateau, with increased precipitation in the central-southern region and decreased precipitation in the southeastern region. The solar maximum leads to surface warming over the Asian continent, causing an enhanced thermal contrast between the Tibetan Plateau and the Indian Ocean, which strengthens the Indian summer monsoon and increases precipitation over the central-southern Tibetan Plateau. Additionally, a negative Pacific Decadal Oscillation-like sea surface temperature pattern under the solar maximum results in decreased precipitation in the Yangtze River basin, southeastern Tibetan Plateau, and southern Japan.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Meteorology & Atmospheric Sciences
Aifang Chen, Hao Huang, Jie Wang, Yuxin Li, Deliang Chen, Junguo Liu
Summary: This study selected Mainland Southeast Asia as the study area and investigated the changes in tropical cyclone characteristics and associated rainfall. It was found that cyclones originating from the Western North Pacific and the South China Sea had the greatest influence on rainfall in Southeast Asia, while those from the Bay of Bengal had a relatively small impact. Additionally, the total rainfall contributed by cyclones accounted for up to 47% of the annual extreme rainfall amount in Southeast Asia. The study also observed significant decreasing trends in rainfall in the southeast region and increasing trends in the northeast region.
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2023)
Article
Meteorology & Atmospheric Sciences
Josefine Axelsson, Jing Gao, Sabine Eckhardt, Massimo Cassiani, Deliang Chen, Qiong Zhang
Summary: This study investigates the impact of moisture transport and sources on precipitation stable isotopes (d(18)O and d-excess) in the central Himalayas using measurements from two stations and simulations from the dispersion model FLEXPART. The results suggest that evaporation over northeastern India and convective activities over the Bay of Bengal and Bangladesh region play important roles in the changes of isotopes in precipitation. Furthermore, the study observes a change in altitude effect in 2015, which is more significant than the temperature and precipitation amount effect.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Meteorology & Atmospheric Sciences
Mengnan Ma, Jianping Tang, Tinghai Ou, Deliang Chen
Summary: This study investigates the spatiotemporal characteristics of subdaily extreme precipitation over the Tibetan Plateau. The results show that there will be significant changes in precipitation amount and extreme precipitation frequency in the future. Additionally, the complex topography of the region plays a crucial role in shaping the nonuniform distribution of precipitation extremes.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Multidisciplinary Sciences
Ziqian Zhong, Bin He, Ying-Ping Wang, Hans W. Chen, Deliang Chen, Yongshuo H. Fu, Yaning Chen, Lanlan Guo, Ying Deng, Ling Huang, Wenping Yuan, Xingmin Hao, Rui Tang, Huiming Liu, Liying Sun, Xiaoming Xie, Yafeng Zhang
Summary: The influence of atmospheric vapor pressure deficit (VPD) on plant photosynthesis is well recognized, but its interactions with air temperature and soil moisture hinder a complete understanding of its impact on vegetation production. By excluding interactive effects, this study reveals a diverging response of productivity to VPD in the Northern Hemisphere. The interactions between VPD and temperature/soil moisture not only offset the potential positive impact of warming on vegetation productivity, but also amplify the negative effect of soil drying. Notably, there is a pronounced shift in vegetation productivity's response to VPD in high-latitude ecosystems when VPD surpasses a threshold of 3.5 to 4.0 hectopascals.
Article
Engineering, Civil
Chi Zhang, Xu Zhang, Qiuhong Tang, Deliang Chen, Jinchuan Huang, Shaohong Wu, Yubo Liu
Summary: Precipitation over the Tibetan Plateau is influenced by systems such as the Asian monsoons, the westerlies, and local circulations. The Indian monsoon, the westerlies, and local circulations are the main systems affecting precipitation over the entire Tibetan Plateau. The East Asian summer monsoon primarily affects the eastern Tibetan Plateau. The Indian monsoon has the greatest influence on precipitation in the southern and central grid cells, while the westerlies have the greatest influence on precipitation in the northern and western grid cells. Local circulations have the strongest influence on the central and eastern grid cells.
JOURNAL OF HYDROLOGY
(2024)
