Article
Polymer Science
Xiaohong Liu, Mohammad-Amin Moradi, Tom Bus, Johan P. A. Heuts, Michael G. Debije, Albert P. H. J. Schenning
Summary: Monodisperse, micrometer-sized liquid crystalline shells are prepared using seeded dispersion polymerization, allowing for programmable alignment and shape control. Different alignment of liquid crystal in the polymer shells is achieved by using different polymer seeds, resulting in various shapes of LC polymer shells after seed removal. The collapse of the shells at defect points is observed, indicating the versatility of the method in preparing biconcave LC polymer shells.
Article
Environmental Sciences
Junsuo Li, Xinying Li, Shoucheng Ma, Wei Zhao, Wenming Xie, Jianqing Ma, Yijun Yao, Wei Wei
Summary: Microplastics can transport contaminants in water, and the effects of dissolved organic matter on the adsorption of toxic metals onto microplastics are important. This study found that tannic acid enhanced the adsorption of Cr(VI) onto polystyrene microplastics, while humic acid and fulvic acid inhibited the adsorption. These findings contribute to our understanding of the behavior of Cr(VI) and microplastics in organic-rich environments.
Article
Environmental Sciences
Zecong Ding, Guangzhao Sun, Fenglian Fu, Chujia Ye
Summary: This study investigated the phase transformation of Cr(VI)-adsorbed ferrihydrite at different pH in the presence of aqueous Mn(II), as well as the fate of Mn(II) and Cr(VI) in the transformation process of ferrihydrite. The results showed that the presence of Cr(VI) and Mn(II) had an impact on the transformation and stability of ferrihydrite.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2022)
Article
Agricultural Engineering
Weipeng Pan, Ziyi Wang, Wenjuan Liu, Jian Lin
Summary: In this study, lignin fibers were prepared using a centrifugal spinning method to enhance its adsorption capacity for Cr(VI). The addition of sodium dodecyl sulfate and its subsequent dissolution during adsorption further improved the Cr(VI) adsorption capacity. These findings are significant for the application of lignin adsorbent materials in wastewater treatment.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Chemistry, Multidisciplinary
Lixia Jia, Xin Tan, Yanfang Li, Yizhong Zhang, Shiqian Cao, Wei Zhou, Xiang Huang, Lequan Liu, Tao Yu
Summary: In this study, a high removal rate of Cr(VI) and Cr(T) was achieved over a wide pH range through the synergistic effect of adsorption, photoreduction, and immobilization on the surface of BiOBr0.25I0.75. The material exhibited multiple functions including capturing Cr(III), adsorbing Cr(VI), and reducing Cr(VI) to Cr(III), making it a potential candidate for chromium-containing wastewater treatment.
CHINESE CHEMICAL LETTERS
(2022)
Article
Biochemistry & Molecular Biology
Laura Cervera-Gabalda, Cristina Gomez-Polo
Summary: In this study, magnetic carbon nanocomposites were successfully used for the removal of Cr (VI). The results showed that the magnetic adsorbents synthesized at high annealing temperature exhibited high magnetization for magnetic separation and large specific surface area for enhanced pollutant adsorption. The adsorption tests confirmed the ability of the synthesized nanostructures to remove Cr (VI), and the materials showed reusability after consecutive adsorption cycles.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Environmental Sciences
Lingling Wang, Dionysios D. Dionysiou, Jianming Lin, Yuxian Huang, Xiaolan Xie
Summary: The research found that humic acid and Cr(VI) displayed synergy in their removal process by ZnO-30N-zeolite, accelerating the removal of humic acid significantly while not affecting the removal capacity of Cr(VI). This study proposed a kinetic mechanism for the synergistic removal of humic acid and Cr(VI) by ZnO-30N-zeolite in a binary pollutant system.
Article
Engineering, Environmental
Jun Zhang, Jiating Wei, Tian Hu, Li Du, Zhaojin Chen, Yao Zhang, Weicheng Zhang
Summary: Microplastics (MPs) are found to mediate the transformation of chromium (Cr) species under sunlight irradiation, reducing Cr(VI) to Cr(III). The reduction process is affected by various factors including the presence of reactive oxygen species (ROS), properties of the MPs, and environmental factors. The reduction of Cr(VI) induced by MPs can occur in reservoir water and has a faster rate compared to purified water.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Huixin Xiong, Yang Liu, Shuyue Wang, Shibei Zhu
Summary: Chemical or biological synthesized iron hydroxides, such as schwertmannite and akaganeite, show high potential for removing chromium ions in polluted wastewater. The adsorption capacity of these materials for Cr(VI) is strong, with maximum adsorption achieved at pH 7.0. Phosphate ions have a greater impact on Cr(VI) adsorption than sulfate and carbonate ions. Moreover, schwertmannite and bioakaganeite exhibit good regeneration ability at temperatures of 288-318 K. Therefore, schwertmannite and bioakaganeite have promising applications in the treatment of acidic/neutral chromate-containing wastewater.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Review
Environmental Sciences
Nazeer Abdul Azeez, Swati Sucharita Dash, Sathyanarayana Naidu Gummadi, Vijaykumar Sudarshana Deepa
Summary: This article discusses the pollution of the environment with toxic heavy metals due to industrialization and modern agricultural practices, with a focus on hexavalent chromium. Various methods, including nano and bioremediation, have been employed to reduce heavy metal concentrations, improving efficiency and lowering costs.
Article
Environmental Sciences
Zi-Le Chen, Yu-Nan Zhang, Jian-Zhong Guo, Lin Chen, Bing Li
Summary: In this study, polyethyleneimine-modified hydrochar (PEI-HC) was successfully synthesized and demonstrated to have high adsorption capacity for Cr(VI). The study also revealed the adsorption mechanism. This research provides a strategy for converting agricultural and forestry wastes into functionalized hydrochar and effectively removing Cr(VI).
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Shuang Wang, Dengjie Zhong, Yunlan Xu, Nianbing Zhong
Summary: Ni/Fe-PEG was synthesized and used for the first time to treat Cr(vi) solution, showing high removal efficiency under optimized conditions. The excellent performance of Ni/Fe-PEG in pollutant treatment is mainly attributed to its adsorption, reduction, and co-precipitation abilities for removing Cr(vi).
NEW JOURNAL OF CHEMISTRY
(2021)
Review
Engineering, Environmental
Abul K. Mallik, Md. Abdul Moktadir, Md. Ashiqur Rahman, Md. Shahruzzaman, Mohammed Mizanur Rahman
Summary: The article introduces the hazards of Cr(VI) pollutants and removal methods, focusing on the progress and application of preparing adsorbents by surface-modifying silica, as well as the adsorption mechanisms of various adsorbents.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Physical
Hemant Mittal, Ali Al Alili, Pranay P. Morajkar, Saeed M. Alhassan
Summary: The synthesized GO/PEI-NCH hydrogel demonstrated high adsorption capacity for Cr(VI) contaminated water, good stability, and reusability through multiple adsorption-desorption cycles, making it a promising candidate for wastewater treatment.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Multidisciplinary
Musa Khan, Faiz Ali, Saba Ramzan, Zeid. A. A. AlOthman
Summary: This study utilized sophisticatedly altered Hummers and sol-gel procedures to synthesize graphene oxides and porous silica monolith particles. A Fischer esterification protocol was used to couple silica monoliths with graphene oxides. A N-phenyl acrylamide-incorporated porous polymer was then synthesized on the composite surface. The resulting polymer-bound composite effectively removed Cr(vi) and Cr(iii) from wastewater, with optimized parameters. The adsorption data followed the pseudo 2nd-order kinetic model and was best fit by the Langmuir adsorption isotherm (Cr(vi)) and the Freundlich model (Cr(iii)).
Article
Multidisciplinary Sciences
Quanyou Liu, Weilong Peng, Qingqiang Meng, Dongya Zhu, Zhijun Jin, Xiaoqi Wu
SCIENTIFIC REPORTS
(2020)
Article
Geosciences, Multidisciplinary
Huang Xiaowei, Jin Zhijun, Liu Quanyou, Meng Qingqiang, Zhu Dongya, Liu Jiayi, Liu Jinzhong
Summary: Through experiments on post-mature kerogen samples from the Yurtus Formation in the Tarim Basin, it was found that hydrogen and catalysts from deep-derived fluids have significant catalytic hydrogenation effects on organic-rich matter, increasing hydrocarbon generation efficiency and potential in post-mature source rocks.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Geosciences, Multidisciplinary
Quanyou Liu, Peng Li, Zhijun Jin, Xinping Liang, Dongya Zhu, Xiaoqi Wu, Qingqiang Meng, Jiayi Liu, Qi Fu, Jianhua Zhao
Summary: The study highlights the significant impact of sulfate reduction on organic matter preservation, with higher SRI values leading to extensive organic matter consumption and lower SRI values resulting in minimal degradation effects.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geochemistry & Geophysics
Huiyuan Xu, Quanyou Liu, Dongya Zhu, Qingqiang Meng, Zhijun Jin, Qi Fu, Simon C. George
Summary: Laboratory experiments have established hydrothermal organic reactions in the presence of mineral catalysts, but little is known about hydrothermal catalytic conversion (HTCC) and the existence of complex molecules in continental hydrothermal systems. Evidence from natural subsurface samples shows a wide range of mineral catalysis of polycyclic aromatic compounds, with a stepwise interaction of organic compounds with metal bearing hydrothermal fluids. This study suggests that various phenyl/sulfur/oxygen-containing compounds are metastable equilibrium products of complex redox reactions under specific hydrothermal conditions.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Geosciences, Multidisciplinary
Quanyou Liu, Xiaoqi Wu, Huichong Jia, Chunhua Ni, Jianhui Zhu, Jiujun Miao, Dongya Zhu, Qingqiang Meng, Weilong Peng, Huiyuan Xu
Summary: The Daniudi gas field in the Ordos Basin has significant reserves of helium gas, which is derived from the radioactive decay of elements in crustal rocks and minerals. The helium in this field is of crustal origin, with no contribution from the atmosphere or mantle. The field is considered to be an extra-large helium gas field.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Weilong Peng, Quanyou Liu, Ying Zhang, Huichong Jia, Dongya Zhu, Qingqiang Meng, Xiaoqi Wu, Shang Deng, Yongsheng Ma
Summary: This study reports the discovery of a new helium-rich gas field, the Dongsheng Gas Field, in the Ordos Basin of China. With a high helium content and significant reserves, the helium in this gas field is thought to originate from the crust and is controlled by regional tectonic activities.
SCIENCE CHINA-EARTH SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
Chunhua Ni, Xiaoqi Wu, Quanyou Liu, Dongya Zhu, Fan Yang, Qingqiang Meng, Huiyuan Xu, Shutang Xu, Tianwu Xu
Summary: This study investigates the helium content and origin of natural gas in the Dongpu Sag in the Bohai Bay Basin, eastern China. The results show that the natural gas in this area is helium depleted and extremely depleted, with most of the helium coming from the crust and a small amount from the mantle.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Qingqiang Meng, Qian Pang, Guang Hu, Zhijun Jin, Donhya Zhu, Jiayi Liu, Chuanwen Zhang
Summary: This study investigates the influence of volcanic ash on the organic matter content in lakes and oceans. It finds that volcanic ash can enhance the organic matter content in overlying shales and extends its influence beyond the thickness of the volcanic layer. The enrichment of organic matter is attributed to the provision of nutrients by the volcanic ash and the alteration of oxidation-reduction conditions. Additionally, the study suggests that volcanic eruptions can lead to the disappearance of terrestrial organic matter, causing more terrigenous organic matter to migrate into the ocean. The fast restoration of terrestrial vegetation is reflected by the decrease in terrigenous sediments after a volcanic eruption. Overall, this study provides insights into the impact of volcanic ash on the qualities of source rock and its implications for the discovery of economically viable petroleum reservoirs in igneous rocks.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Meng Qingqiang, Pang Qian, Hu Guang, Jin Zhijun, Zhu Dongya, Liu Jiayi, Zhang Chuanwen
Summary: This study evaluates hydrocarbon generation and analyzes the evolution of shale storage space in the third member of the Xiamaling Formation in Hebei Province. The results show that dyke intrusion significantly reduces the TOC content of shale and induces instantaneous hydrocarbon generation. The intrusion also transforms organic pores in shale into inorganic pores. Two porosity peaks were observed in shale, corresponding to the increase of organic and inorganic mineral pores, respectively.
ACTA GEOLOGICA SINICA-ENGLISH EDITION
(2022)
Review
Engineering, Environmental
Yan Feng, Yue Tao, Qingqiang Meng, Jianhua Qu, Shouyi Ma, Siyue Han, Ying Zhang
Summary: This paper reviews the research hotspot and applications of microwave technology in the field of environmental remediation, as well as the research progress on the mechanism, applications, and cost estimation of microwave-combined advanced oxidation system for treating organic pollutants.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Geography, Physical
Mingtao Yao, Zuoyu Sun, Qingqiang Meng, Jiachun Li, Dayong Jiang
Summary: The study revealed that the early Ladinian lacustrine ecosystem of the Ordos Basin is the earliest known Mesozoic-type, trophically multileveled lake ecosystem after the end-Permian mass extinction. Vertebrate coprolites from the Chang 7 Member showed evidence of piscivorous animals as producers, enriching the biodiversity of the ecosystem with large carnivorous predators. The presence of apex predators in a trophically multileveled lake ecosystem suggests the rebuilding of the top-predator trophic structure after the end-Permian mass extinction.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Chuanwen Zhang, Qingqiang Meng, Xuan Tang, Zuoyu Sun, Qian Pang, Dawei Lyu, Dongya Zhu, Jiayi Liu, Jiachun Li, Bin Jiang
Summary: This study analyzes the impact of volcanic ash layers on the differential development of hydrocarbon-forming organisms in high-quality source rocks of the Dalong Formation in the Sichuan Basin, China. The results show that volcanic activities increase the number of hydrocarbon-forming organisms through the fertilization effect of volcanic ash, and different volcanic ash layers result in the differential development of various types of hydrocarbon-forming organisms.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Xiaowei Huang, Zhijun Jin, Quanyou Liu, Qingqiang Meng, Dongya Zhu, Lu Wang, Jiayi Liu, Panpan Zhang, Jingbin Wang
Summary: This study quantitatively investigates the effects of deep fluids on the hydrocarbon (HC) generation and evolution of low-mature source rocks through simulation experiments. The results reveal that catalytic hydrogenation significantly modifies the transformation process of HC generation from organic matter (OM) and that exogenous hydrogen and metal elements in deep fluids play a crucial role in enhancing the HC generation potential in the high-temperature stage.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geochemistry & Geophysics
Huiyuan Xu, Quanyou Liu, Dongya Zhu, Weilong Peng, Qingqiang Meng, Jingbin Wang, Juye Shi, Zhijun Jin
Summary: Deep hydrothermal activities impact the organic compounds in ultra-deep reservoirs, increasing the relative abundance of organosulfur compounds and transforming compound classes.
Article
Green & Sustainable Science & Technology
Quanyou Liu, Dongya Zhu, Zhijun Jin, Hailong Tian, Bing Zhou, Peixue Jiang, Qingqiang Meng, Xiaoqi Wu, Huiyuan Xu, Ting Hu, Huixing Zhu
Summary: This study presents a natural CO2 storage analog in the Huangqiao CO2-oil reservoir in eastern China, demonstrating the long-term and safe carbon capture and storage potential of geological formations. It shows that the calcite dissolution improves CO2 storage capacity in sandstone reservoirs, while the precipitation of calcite cement self-seals fractures and enhances the sealing capacity of CO2 storage.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Materials Science, Multidisciplinary
Ping Zhang, Xiujie Yue, Yeran Gao, Zhenyong Lin, Shunxiang Wang, Songting Zhang
Summary: This paper investigates the strengthening mechanism of highspeed cutting and solid particle-entrained waterjet peening (HSC-WJP) composite reinforcement on 7075-T6 aluminum alloy. The research results show that composite reinforcement can improve surface quality, reduce surface pits and roughness, and decrease the size of precipitation-free zone (PFZ) at grain boundaries.
Article
Materials Science, Multidisciplinary
Sangyoon Lee, Hwi Yoon, Sanghun Lee, Seung-min Chung, Hyungjun Kim
Summary: The wettability of metal oxides, particularly HfO2 thin films deposited via atomic layer deposition, and its correlation with surface free energy have been studied. It was found that surface oxygen species significantly affect the intrinsic hydrophilicity of HfO2 thin films, and the crystalline orientations also evolve with film thickness.
Article
Materials Science, Multidisciplinary
Changdong Yin, Yiwen Wu, Zhou Xu, Dongdong Ye, Jun Yao, Jianjun Chen, Qiang Liu, Xin Ge, Meiling Ding
Summary: This study proposed a new strategy to indirectly estimate the hydrogen diffusivity of metallic materials under tensile stress by combining the electrochemical hydrogen permeation test (EHPT), the hydrogen diffusion descriptive equation based on Fick's law, and hydrogen pre-charged tensile test. The results showed that the hydrogen permeation curve obtained was highly approximate to the theoretical trend. The hydrogen embrittlement (HE) susceptibility of the specimens increased with increasing stress.
Article
Materials Science, Multidisciplinary
Huan Luo, Wei-yi Wang, Xin Yu, Xian-jun Lei, Lang Liu, Guo-zheng Zha, Wen-long Jiang, Bin Yang, Bao-qiang Xu
Summary: Separating selenium and tellurium is a general challenge in material and non-ferrous metallurgical industries. This paper proposes a novel method that achieved efficient separation of selenium and tellurium using gas-liquid equilibrium phase diagram and valence regulation-vacuum gasification technique.
Article
Materials Science, Multidisciplinary
Fan Zhang, Rong Xin Wang, Aiqin Tian, Fangzhi Li, Jianping Liu, Hui Yang
Summary: Deposition of Pd/Pt/Au three-layer films on p-GaN under high and ultra-high vacuum conditions was studied to investigate the electrical contact properties. Linear I-V curves were observed in samples deposited under ultra-high vacuum conditions, while nonlinear I-V characteristics were obtained in samples deposited under high vacuum conditions. The study also found that the samples deposited under high vacuum conditions had higher amounts of oxygen and Pd oxide. The oxide layer had an additional influence on the electrical characteristics of the Pd/Pt/Au/p-GaN contact.
Article
Materials Science, Multidisciplinary
Hongli Liu, Chengzhe Liu, Ying Sui, Zhongxian Liu, Tiangang Zhang, Zhiqiang Zhang, Shuang Sun, Jianwei Jia
Summary: This study utilized polysiloxane and hafnium carbide to produce Si-N-C-O-Hf hybridized ceramic fibers, and obtained ceramic fibers with hemispherical particles on the surface through electrostatic spinning and pyrolysis. The ceramic fibers exhibited excellent thermal stability, oxidation resistance, and high temperature insulation.
Article
Materials Science, Multidisciplinary
M. Abaker, Nazar Elamin Ahmed, A. Saad, H. F. Khalil, E. M. M. Ibrahim, A. M. Adam
Summary: This paper systematically studied the internal structure and thermoelectric properties of In1-xGaxSb alloys prepared by melting synthesis at 1123 K. The results showed that doping with Ga in the In sites led to a significant increase in the Seebeck coefficient and power factor, while reducing the thermal conductivity. The maximum dimensionless figure of merit was observed at 403 K.
Article
Materials Science, Multidisciplinary
Fucheng Yu, Jinlong Ren, Jielin Zhang, Haiyang Chen, Xin Tian, Chenchen Feng, Cuixia Li, Jianbin Zhang, Xianxi Tang, Xiaogang Hou
Summary: An environmentally friendly ZnO@BiVO4 composite photocatalyst was prepared using in-situ self-assembly and solvothermal methods, demonstrating good photocatalytic performance. The mass ratio of BiVO4 and NCZ was found to influence the photocatalytic performance of the composite.
Article
Materials Science, Multidisciplinary
Yaoming Shao, Pingping Zheng, Tianhao Dong, Lianghuan Wei, Haifei Wu, Jianxiao Si
Summary: In this paper, Mg3Bi2 films were prepared on glass substrate using magnetron sputtering, and the phase composition and thermoelectric properties of the films were investigated with different atomic ratios. The films displayed a metastable cubic phase and high conductivity when the atomic ratio exceeded stoichiometry.
Article
Materials Science, Multidisciplinary
I. V. Uimanov, D. L. Shmelev, S. A. Barengolts
Summary: A two-dimensional axisymmetric model has been developed to study the prebreakdown processes in a cathode microprotrusion under an external electric field. The simulation results show that electrohydrodynamic instability leads to the formation of a nanometer-sized conical protrusion on the microprotrusion tip, significantly accelerating the heating process.
Article
Materials Science, Multidisciplinary
Weilun Zhang, Di Yang, Feng Gong, Yongjun Chen, Tian Chen, Zhiwen Xie, Sirui Yang
Summary: A novel Pt doping method was designed to improve the thermal stability of CrWN coating. The doping of Pt atoms effectively blocks the coherent growth of the grains and creates a significant mixing effect, resulting in a smooth surface with uniform element distribution.
Article
Materials Science, Multidisciplinary
Xiaoye Wang, Xiaoguang Yang, Wenna Du, Tao Yang
Summary: In this study, the effects of multiple growth parameters on self-catalyzed growth of InAs/GaSb axial heterostructured nanowires on Si substrate by MOCVD were investigated. It was found that the growth temperature and switching time have significant influences on the nanowire growth.
Article
Materials Science, Multidisciplinary
Weizhong Cui, Yan Zhao, Can Cui, Xing Liu, Beili Pang, Jianguang Feng, Hongzhou Dong, Liyan Yu, Lifeng Dong
Summary: This study introduces Co2+ cations into Cs2AgBiBr6 film to improve its quality, grain size, and conductivity, resulting in enhanced solar cell efficiency.
Article
Materials Science, Multidisciplinary
Jian Wang, Ke Yang, Xianming Cheng, Yalin Lu, Ganghui Wu, Yang Zhang, Yun Kan
Summary: The corrosion behavior and microstructural evolution of Sc microalloyed Al-3.2Cu-1.5Li alloys were investigated in detail. The microstructural results showed higher levels of dislocations density in the Sc microalloyed sample, which resulted in significantly refined grains and T1 precipitates. Microalloying with Sc changed the corrosion mode of the alloy and localized corrosion was found to occur preferentially at the subgrain within unrecrystallized grains with high grain stored energy.
Article
Materials Science, Multidisciplinary
Weifeng Liu, Na Liu, Kaiqiang Song, Meiqin Zeng, Zhongchen Lu
Summary: Monoclinic WO3 prepared through plasma milling exhibits higher photocatalytic activity due to its higher surface area, increased oxygen vacancies, and defects.
