Review
Metallurgy & Metallurgical Engineering
Ya-jun Wang, Meng-jie Tao, Jun-guo Li, Jian-bao Zhang, Song Qin, Shao-hua Liu, Li-jie Peng, Xiao-pei Zhang, Xi Zhang, Ya-nan Zeng
Summary: In response to the global issue of reducing carbon emissions and the challenges of utilizing steel slag, researchers have studied an accelerated carbonation process to store CO2. Despite its potential, the process has not been widely applied in industry yet. This review summarizes the latest research progress in mineral carbonation processes and proposes a new research focus on regulating calcium carbonate crystal forms during carbonation using the Ca source in steel slag. The potential applications and future development prospects of CaCO3 whiskers are also discussed.
JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Lei Wang, Zeen Yv, Licheng Ma, Qi Zheng, Tong Wang, Xiaokui Che, Xinglan Cui, Hongxia Li, Shenyv Wei, Xinyue Shi
Summary: Hollow calcite microspheres were successfully synthesized in this study, and it was found that the concentration of SDS plays an important role in the spherical crystallization of calcium carbonate. Infrared spectroscopy and conductivity analysis suggested that when the concentration of SDS reached 0.3 g/L in the PEG-SDS system, SDS and PEG formed a spherical supramolecular structure.
Article
Environmental Sciences
Ya-Jun Wang, Jun-Guo Li, Meng-Jie Tao, Xi Zhang, Jian-Bao Zhang, Song Qin, Shao-Hua Liu, Li-Jie Peng, Xiao-Pei Zhang, Ya-Nan Zeng
Summary: This study presents a novel method for producing acicular aragonite using AOD slag while controlling various reaction parameters. The results showed that reaction temperature had the most significant impact on carbonation efficiency, followed by reaction time, stirring speed, CO2 pressure, and liquid-to-solid ratio. Higher temperature and longer reaction duration favored the precipitation of aragonite. Increasing both temperature and the magnesium-to-calcium stoichiometric ratio enhanced aragonite formation and affected its crystal growth orientation and dimensions. The optimal combination of reaction parameters resulted in acicular aragonite with excellent overall uniformity, high aspect ratio, and smooth crystal surface. This study provides valuable insights into the efficient production of acicular aragonite from steel slag while reducing CO2 emissions and promoting resource sustainability.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Construction & Building Technology
Zonghua Xu, Liting Yu, Bao Lu, Jinfeng Sun, Zhenshan Liu, Hamdy M. Naguib, Guihua Hou
Summary: In this study, triethylene glycol was used as a modifier for rankinite cement carbonation to induce the formation of aragonite whiskers and prepare high-flexural-strength cement. The research focused on the effects of different admixture amounts of TEG on aragonite formation and mechanical strength enhancement. The results demonstrated significant improvements in flexural and compressive strengths of the carbonated cement mortar specimens compared to the reference sample, attributed to the growth of aragonite whiskers in the cement paste.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Review
Engineering, Chemical
Freddy Liendo, Mara Arduino, Fabio A. A. Deorsola, Samir Bensaid
Summary: CaCO3 particles are widely used in various fields due to their adjustable size and morphology, tailored porosity and surface area, biocompatibility and non-toxicity. The carbonation method for synthesizing CaCO3 is considered to be the most environmentally friendly and innovative approach, which can potentially mitigate CO2 emissions. This method can also utilize various waste materials as raw inputs, reducing the environmental impact. This review article focuses on the process parameters and control of particle size, morphology, and crystalline phase in the synthesis of CaCO3 through the carbonation method. Additionally, the current applications and roles of CaCO3 in different fields are discussed.
Article
Construction & Building Technology
Peiliang Shen, Jianxin Lu, Yangyang Zhang, Yi Jiang, Shipeng Zhang, Chi Sun Poon
Summary: This study developed an innovative wet carbonation process to prepare aragonite whisker-rich materials and used them as micro-fiber additions to cement. The results showed that needle-like aragonite whiskers could be rapidly synthesized under specific conditions, and a new type of micro-fiber reinforced cement was developed by mixing them with cement.
CEMENT AND CONCRETE RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Peiliang Shen, Yi Jiang, Yangyang Zhang, Songhui Liu, Dongxing Xuan, Jianxin Lu, Shipeng Zhang, Chi Sun Poon
Summary: In this study, a wet carbonation method was developed to produce aragonite whisker using fine recycled concrete waste (FRCW) for efficient CO2 capture and conversion. The operational factors, including MgCl2 concentration, temperature, CO2 concentration and duration, were investigated for the formation of aragonite. The results showed that this carbonation process can produce needle-like aragonite whisker-rich materials and capture a large amount of CO2 within a short time. The MgCl2 concentration and temperature were crucial for aragonite nucleation, while a lower CO2 concentration only slightly affected the carbonation rate without changing the carbonation products. The proposed approach offers a novel direction for CO2 sequestration.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Physics, Applied
Jian Zeng, Ka Man Chung, Xintong Zhang, Sarath Adapa, Tianshi Feng, Yu Pei, Renkun Chen
Summary: Particle beds are widely used in systems like heat exchangers and reactors. This study investigated the effect of packing structure on thermal conductivity using silica microspheres as model material. Results showed that a model based on a more realistic packing structure had better agreement with experimental data, indicating the potential of the combined DEM and FEM methodology in predicting thermal conductivity.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Construction & Building Technology
Peiliang Shen, Zhenjiang Gu, Jianxin Lu, Yangyang Zhang, Yi Jiang, Dongxing Xuan, Shipeng Zhang, Chi Sun Poon
Summary: An innovative carbonation method was developed to modify the surface characteristic of recycled concrete aggregate (RCA) by promoting the formation of needle-like aragonite using accelerated carbonation in Mg(NO3)2 solution under an elevated temperature (75 degrees C). The mineral wrapping induced by carbonation significantly modified the roughness, topography, and geochemistry of RCA's surface, contributing to enhanced bonding strength between RCA and new mortar (33.54%).
CEMENT & CONCRETE COMPOSITES
(2023)
Article
Construction & Building Technology
Fengshun Wu, Xujia You, Mingming Wang, Tiejun Liu, Bao Lu, Guihua Hou, Ruiyu Jiang, Caijun Shi
Summary: This study examines the impact of Mg(OH)(2) on the in-situ formation of fibre-like aragonite and the mechanical properties of cement mortar subjected to accelerated carbonation. The addition of Mg(OH)(2) has a limited effect on the compressive strength but significantly improves the flexural strength of the carbonated samples. FTIR and XRD analysis confirm that aragonite, rather than calcite, becomes the dominant CaCO3 polymorph with more than 5% Mg(OH)(2) content. The in-situ formed fiber/needle-like aragonite increases the total porosity and refines the pore sizes of carbonated samples when Mg(OH)(2) is added.
CEMENT & CONCRETE COMPOSITES
(2023)
Article
Construction & Building Technology
Junhao Ye, Songhui Liu, Jingrui Fang, Haibo Zhang, Jianping Zhu, Xuemao Guan
Summary: This study successfully synthesized aragonite whiskers using waste magnesia slag and magnesium sulfate through a wet carbonation technology. The incorporation of these whiskers improved the microstructure and mechanical properties of Portland cement paste. The study found that appropriate concentrations of magnesium sulfate favored the formation of aragonite whiskers, and their inclusion increased the compressive strength of the cement paste. Additionally, the waste magnesia slag demonstrated good carbon dioxide sequestration capacity during the carbonation process.
Article
Chemistry, Multidisciplinary
Wey Yih Suharman, Wey Yih Heah, Hiroshi Yamagishi, Yohei Yamamoto
Summary: Thermally tolerant polymer optical resonators are prepared from a stereocomplex of poly(l-lactic acid) and poly(d-lactic acid). The microspheres of the stereocomplex poly(lactic acid) exhibit higher thermal stability compared to homochiral poly(lactic acid). The optical resonator properties of the microspheres are preserved at elevated temperatures.
Article
Materials Science, Ceramics
Yace Mi, Zhiqian Liu, Sa Liu, Jinmei Zhao, Yinmin Zhang, Yongfeng Zhang
Summary: In this study, fly ash-based SiO2-Al2O3 microspheres were successfully prepared using phase separation and acid leaching. The optimal temperature range for heat treatment was determined using thermal analysis and X-ray diffraction. X-ray fluorescence and contact angle measurements were used to analyze the chemical composition and surface properties of the microspheres, while scanning electron microscopy was used to characterize their appearance. The results showed that the SiO2-Al2O3 microspheres had a uniform particle size, hydrophilic surface, and high alkali resistance. The mean particle size decreased with an increase in the heat treatment temperature. Fusion between the SiO2-Al2O3-enriched phases via interfacial tension was observed at 800 degrees C, resulting in larger spherical phase structures. An increase in the composition of Al2O3, Fe2O3, and CaO decreased the particle size and inhibited phase separation.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Engineering, Environmental
Zi-ling Li, Yi-dan Wei, Jia-ning Wei, Ke-yan Chen, Yu He, Man-man Wang
Summary: A novel adsorbent CaCO3@HAP/Fe3O4 was prepared and successfully applied for efficient and selective adsorption of benzoylurea insecticides in tea beverages samples. The method showed excellent adsorption capacities, good stability, and easy regeneration of the sorbent for multiple uses, providing a convenient and reliable strategy for the determination of BUs in tea beverages.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
Fujun Yao, Xun Liu, Chaoqun Wu, Xin Yang, Yan Wang, Wenyuan Hu, Chonghua Pei
Summary: This study investigates the biomimetic potential of using amorphous CaCO3 (ACC) to mimic crustacean exoskeletons and optimize their physical and chemical properties. The researchers prepared monodisperse ACC microspheres with high sphericity and hardness using the gas diffusion method in the presence of Mg2+. The stability of ACC was found to be affected by environmental conditions, but the microspheres showed high stability under ambient conditions. This research provides guidance for the preparation of ACC biomimetic composites and enhances the understanding of biomineralization mechanisms.
INORGANIC CHEMISTRY
(2022)
Article
Engineering, Environmental
Ren Tao, Peng Xing, Huiquan Li, Zhenhua Sun, Yufeng Wu
Summary: A novel process combining pyrolysis and hydrometallurgical leaching was developed for full-component recovery of spent LiCoO2 battery. Organic matters were recovered in the form of pyrolytic oil and gas, while harmful fluorine element was absorbed by Ca(OH)2 solution. The results suggest that this process is inexpensive, efficient, and eco-friendly.
RESOURCES CONSERVATION AND RECYCLING
(2022)
Article
Engineering, Environmental
Qingxiang Shu, Zhenhua Sun, Ganyu Zhu, Chenye Wang, Huiquan Li, Fang Qi, Qikun Zhang, Shaopeng Li
Summary: This research proposes an efficient and low-cost method for the preparation of ZSM-5 zeolite, achieving high-value utilization of coal gasification coarse slag (CGCS). By one-step microwave synthesis, the desilication solution from CGCS is used as the major source material, leading to improved crystallization rate and specific surface area of ZSM-5 zeolite. The resulting high-purity ZSM-5 zeolite exhibits good crystallinity, smooth surface, and high adsorption capacity.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Engineering, Chemical
Neng Guo, Xiaoyan Cao, Qian Li, Yan Han, Huiquan Li, Yupeng Yuan
Summary: In this study, oxygen-vacancy-rich Ag/Bi5O7Br nanosheets were synthesized using a facile liquid-phase reduction method for photocatalytic NO removal. The results showed that under visible light irradiation, the photocatalytic NO removal ratio of oxygen-vacancy-rich Ag/Bi5O7Br reached 64.65%, which was 1.6 times higher than that of pristine Bi5O7Br. Moreover, the oxygen production rate of Ag/Bi5O7Br was nearly 10 times higher than that of Bi5O7Br.
ADVANCED POWDER TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Ziye Zhang, Liteng Ren, Hao Li, Daochuan Jiang, Yuetong Fang, Haiwei Du, Gengsheng Xu, Chuhong Zhu, Huiquan Li, Zhou Lu, Yupeng Yuan
Summary: A heterostructure of graphitic carbon nitride and carbon rings was synthesized via a thermolysis process, showing suppressed excited-state decay and increased charge carrier population in photocatalysis. This structure enabled more photoinduced electrons to participate in photocatalytic reactions, leading to an eightfold enhancement in visible-light-driven H-2 generation.
Article
Engineering, Environmental
Chen Zhao, Chenye Wang, Xingrui Wang, Huiquan Li, Yan Chen, Wenfen Wu
Summary: This paper presents a feasible process for the recovery of tungsten and titanium from spent SCR catalysts using atmospheric pressure leaching. Titanium and tungsten are simultaneously leached with sulfuric acid as the leaching agent. The optimal conditions for leaching were determined, and the formation of heteropolytungstate was confirmed to be essential for the synergistic leaching of titanium and tungsten.
Article
Engineering, Environmental
Ren Tao, Peng Xing, Huiquan Li, Zhigen Cun, Chenye Wang, Shengyue Ma, Zhenhua Sun
Summary: This study investigates the kinetics of full-component pyrolysis of spent NCM LIBs using the isoconversional method, revealing the reaction processes and activation energy at different stages, providing guidance for the recycling of waste LIBs.
Article
Chemistry, Physical
Zhenhua Sun, Shaopeng Li, Huiquan Li, Mingkun Liu, Zhanbing Li, Xianjie Liu, Mingyong Liu, Qiyun Liu, Zhaohui Huang
Summary: A study was conducted on the characteristics and surface corrosion behavior of waste saggar samples used in the synthesis process of LiCoO2. The erosion reactants in recycled saggars were identified through high-temperature solid-state reactions. The results showed significant erosion penetration of lithium compared to cobalt, with generation of key phases and internal crack expansion at the material-saggar interface. These findings contribute to the improvement of saggar and the utilization technology of waste saggars.
Article
Chemistry, Multidisciplinary
Jiale Wu, Liguo Wang, Shuang Xu, Yan Cao, Ziqiang Han, Huiquan Li
Summary: Developing efficient and green catalytic systems for the synthesis of alicyclic amines via hydrogenation of nitroaromatics is highly desired. In this study, Ru-Pd dual active site catalysts anchored on air-exfoliated carbon nitride were developed and showed superior performance in the hydrogenation of nitrobenzene to cyclohexylamine. The Ru-Pd catalysts exhibited a higher CHA production rate compared to single Ru or Pd based catalysts and showed enhanced catalytic activity due to the highly dispersed Ru-N-x and Pd-N-x at a nanoscale distance.
Article
Chemistry, Multidisciplinary
Yuan-Fan Yang, Hong-Qi Huang, Zong-Yin Song, Hui-Quan Li, Xin-Yu Yu, Yu-Min Cui, Meng Yang, Shi-Hua Chen, Xing-Jiu Huang
Summary: Doping heteroatoms to modulate active sites and improve catalytic capabilities of nanomaterials has gained attention. However, the relationship between catalytic performance and structural changes caused by doping has been overlooked. In this study, a strategy for enhancing electrochemical analysis of As(iii) was developed using P-doped FeCo2O4-x (P-FeCo2O4-x). P-FeCo2O4-x modified electrodes exhibited improved sensitivity, selectivity, stability, repeatability, practicality, and anti-interference ability compared to FeCo2O4-x. X-ray photoelectron spectroscopy revealed the role of P-doping in facilitating electron transfer and the formation of oxygen vacancies, leading to enhanced electrocatalysis of As(iii). This work provides insights into the relationship between internal changes caused by heteroatomic doping and catalytic performance, guiding the design of highly active electrocatalytic interfaces for ultrasensitive environmental analysis of heavy metal ions.
ENVIRONMENTAL SCIENCE-NANO
(2023)
Article
Multidisciplinary Sciences
Zhanbing Li, Huiquan Li, Xingzhong Huang, Wenfen Wu, Zhenhua Sun, Xiuwen Wu, Shaopeng Li
Summary: This study investigated the catalytic hydrolysis of secondary aluminum dross (SAD) using NaOH as a catalyst to remove nitrides and fluorides simultaneously. The optimal conditions for catalytic hydrolysis were established and achieved efficient removal of nitrides and fluorides. The chemical speciation and transformation of nitrides and fluorides were systematically analyzed. The results of this study are significant for resource utilization of SAD.
Article
Energy & Fuels
Da Shi, Jianbo Zhang, Huiquan Li, Shaopeng Li, Fayu He, Jiangshan Qu, Ruiqi Chang, Ganyu Zhu, Chennian Yang, Chenye Wang
Summary: Coal gasification fine slag (CGFS) generated in the coal chemical industry poses serious environmental pollution and resource wastage. By studying the phenomenon of covering between CGFS particles, this study proposes a selective dispersion flocculation flotation method to efficiently separate unburned carbon (UC) from CGFS. The mechanism of selective dispersion flocculation is revealed through the analysis of adsorption mode, interaction force between particles, and particle size distribution. Results show that selective adsorption controls the agglomeration of particles, transforming the original carbon-ash selective agglomeration state to carbon-carbon selective agglomeration state. This work improves the recovery rate of combustible materials and provides guidance for the separation of carbon and ash from gasification slag in industry.
Article
Materials Science, Multidisciplinary
Xiaoyan Cao, Chenxu Liu, Qian Li, Jitang Chen, Yan Han, Huiquan Li, Yumin Cui, Biao Wang, Lianzhen Bo, Yupeng Yuan
Summary: In this study, Ag/Bi4Ti3O12 (Ag/BTO) nanocomposites with surface plasmon resonance (SPR) effect were synthesized by a solvothermal method. Compared with BTO, Ag/BTO narrowed the band gap, improved the absorption intensity in the 400-700 nm region, increased the separation efficiency of photo-induced electron-hole pairs, reduced the energy barrier of the key step from water splitting, and remarkably enhanced the photocatalytic water oxidation ability. The oxygen evolution rate of visible-light-driven 3-Ag/BTO with an appropriate silver content is 8.39 times higher than that of BTO without any sacrificial agent, and the performance of 3-Ag/BTO is also higher than that of most reported photocatalysts.
Article
Chemistry, Analytical
Cong-Cong Huang, Zong-Yin Song, Hui-Quan Li, Xin-Yu Yu, Yu-Min Cui, Meng Yang, Xing-Jiu Huang
Summary: This study proposes an innovative method for enhancing the detection sensitivity of As(III) by employing FeCoOx nanosheets to stabilize and activate Au NPs under mild conditions. The FeCoOx nanosheets with abundant oxygen vacancies provide active sites for As(III) adsorption and assist in stabilizing Au NPs for uniform dispersion. The valence cycle activated Au NPs and accelerated electron transfer, synergistically enhancing the electro-catalysis of As(III).
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Engineering, Chemical
Ziheng Meng, Ganyu Zhu, Huiquan Li, Shaopeng Li, Kun Yan, Yue Yang
Summary: In this study, a novel gas removal method using fine bubbles (FBs) degassing was proposed to effectively remove C2H2 in solid CCS particles. The research found that approximately 70% of C2H2 in CCS was difficult to remove by traditional methods, but under the optimal conditions, the C2H2 removal efficiency was approximately 61.0%. The study also revealed that the erosion mechanism of FBs degassing could promote the reaction between calcium carbide and water, resulting in the generation of C2H2 which could be quickly removed by FBs.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Liang Zhu, Zhifu Liang, Hao Li, Qiunian Xu, Daochuan Jiang, Haiwei Du, Chuhong Zhu, Huiquan Li, Zhou Lu, Yupeng Yuan
Summary: This study demonstrates a new type of photocatalyst, a 2D van der Waals heterostructure composed of ultrathin polymeric carbon nitride (p-CN) and Ni-containing Salphen-based covalent organic framework (Ni-COF) nanosheets. It reveals the presence of highly separated single-atom Ni sites in NiCOF nanosheets, which function as catalytically active sites to enhance solar fuel production. The photocatalytic results show significantly higher rates of chemical fuel generation for H-2 and CO compared to p-CN alone. This work provides new insights into the construction of pi-conjugated van der Waals heterostructures for high-efficiency photocatalysis.
