Article
Chemistry, Multidisciplinary
Yilong Hua, Wei Wang, Nan Hu, Tianhang Gu, Lan Ling, Wei-xian Zhang
Summary: The core-shell structure of nanoscale zero-valent iron (nZVI) has been shown to provide multiplex solution and surface chemistry for reliable and high-efficiency enrichment and separation of uranium from low-level sources. Treatment of uranium-tailings wastewater in continuous-flow reactors resulted in reacted nZVI with high uranium content and treated wastewater with significantly reduced uranium concentration. This research further supports the cost-effective use of nanotechnology for pollution control and resource recovery.
ENVIRONMENTAL SCIENCE-NANO
(2021)
Article
Engineering, Environmental
Chao Gao, Jixue Sui, Kang Chen, Zongyuan Chen, Wangsuo Wu, Zhijun Guo
Summary: The study demonstrates that nZVI can effectively remove U(VI) from strongly alkaline solutions in anaerobic conditions, with a reduction efficiency of up to 95.5%, but the efficiency drops significantly in aerobic conditions due to oxidation and desorption processes. This offers new insights into the mechanisms of U(VI) interactions with nZVI in alkaline media and provides a potential approach for uranium recovery from spent nZVI.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Tianhang Gu, Wei Teng, Airong Liu, Zilong Deng, Lan Ling, Wei-xian Zhang
Summary: The spatial configuration of antimony complexes has a significant impact on the removal rate, with Sb(III) showing a higher reaction rate constant than Sb(V). The rate-limiting step is identified as Fe-O bond cleavage, with Sb(OH)3 favoring this process with lower energy barrier compared to Sb(OH)6. These findings suggest a new perspective on nZVI reactions with oxyanions like arsenic and selenium, highlighting the importance of complex spatial configurations in metal(loid) separation.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Jing Liu, Airong Liu, Jie Guo, Tao Zhou, Wei-xian Zhang
Summary: Modifications using different types of polyacrylamide (PAM) enhanced the sedimentation efficiency of nano zero-valent iron (nZVI) in a nano-iron reactor, improving processing capacity and maintaining reactivity for a longer period in wastewater treatment.
Review
Environmental Sciences
Yaru Li, He-Ping Zhao, Lizhong Zhu
Summary: This review summarizes the advantages and disadvantages of various nZVI synthesis methods, introduces modification methods for addressing undesired oxidation and agglomeration of nZVI, and explains the mechanisms behind efficient removal of organic pollutants by modified nZVI. Additionally, other assisting methods for enhancing nZVI mobility and reactivity are evaluated.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Rong Cheng, Yingying Zhang, Tao Zhang, Feng Hou, Xiaoxin Cao, Lei Shi, Peiwen Jiang, Xiang Zheng, Jianlong Wang
Summary: Nanoscale zero-valent iron (nZVI) is a promising disinfection tool for pathogenic enteric viruses. The resistance difference between bacteriophages to nZVI is not well understood. This study found that PhiX174 bacteriophage exhibited stronger resistance to nZVI compared to MS2 bacteriophage. The damage to viral surface proteins and nucleic acids played a role in bacteriophage inactivation.
FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
(2022)
Article
Chemistry, Physical
Jingjuan Qiao, Weizhou Jiao, Youzhi Liu
Summary: The study proposed a sequential NZVI-Na2S2O8 process for degrading NB-containing wastewater, achieving high efficiency in NB degradation and total organic carbon removal. Sulfate radicals (SO4 center dot-) and hydroxyl radicals ((OH)-O-center dot) were identified as playing a major role in the process through electron paramagnetic resonance spectroscopy and radical capture experiments.
GREEN ENERGY & ENVIRONMENT
(2021)
Article
Chemistry, Physical
Ahmed M. Mahdy, Tiequan Zhang, Zhi-Qing Lin, Nieven O. Fathi, Rasha M. Badr Eldin
Summary: The study demonstrates that nZVI treatment significantly affects Ni+2 sorption in soil, increasing Ni retention and reducing bioavailable Ni+2 concentrations. High levels of nZVI treatment enhance sorption capacity, while the mechanism of Ni+2 immobilization in an aquatic environment involves sorption processes and reduction of metal ions.
Article
Engineering, Environmental
Junmin Deng, Tao Chen, Yara Arbid, Mathieu Pasturel, Sungjun Bae, Khalil Hanna
Summary: This study investigated the reactivity changes of nanoscale zerovalent iron (NZVI) in different groundwater systems under anoxic and oxic conditions over a wide range of aging time. NZVI exhibited a decline in reductive activity in pure water systems, but an enhancement followed by a decline after short-term aging in groundwater. The formation of secondary Fe(II)-bearing phases was identified as the reason for this behavior. The adsorption experiments revealed that GW-anoxic-aged NZVI samples exhibited a strong affinity for nalidixic acid (NA) and a greater adsorption capacity than pristine NZVI. Surface complexation modeling attributed the enhanced adsorption to Fe(II)-NA surface complexation. The significant changes in NZVI reactivity and adsorption capacity due to groundwater corrosion highlight the importance of assessing long-term remediation projects involving NZVI injection.
Article
Environmental Sciences
Thunyalux Ratpukdi, Katika Intarasuwan, Panitan Jutaporn, Eakalak Khan
Summary: This study investigated the interactions between different NOM fractions and NZVI, finding that HPOA of GWNOM and HPIA of SRNOM exhibited the highest adsorption capacities. Bulk NOM fractionation after reaction with NZVI indicated that NOM not only adsorbed on NZVI, but also reacted and transformed into more hydrophilic and neutral compounds. This work sheds light on the reactivity between NOM and NZVI.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Xue Li, Miao Gao, Yingchao Huo, Houqi Liu, Jie Li, Tianyin Huang, Ruquan Ye, Wenwei Li
Summary: This study investigates the impact of shell structure on the reactivity and air stability of nanoscale zero-valent iron (nZVI). The results show that nZVI with a highly crystalline and weakly hydrophilic shell exhibits higher intrinsic activity for nitrate reduction and improved air stability compared to nZVI with an amorphous, hydrophilic iron hydroxide oxide shell. The crystalline shell facilitates more efficient interfacial electronic transfer and suppresses side reactions, while the protective hematite shell enhances anti-aging ability.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Hao Cheng, Chao Huang, Ping Wang, Dingxun Ling, Xiaoyu Zheng, Haiyin Xu, Chongling Feng, Hao Liu, Min Cheng, Zhiming Liu
Summary: In this study, molybdenum sulfide (MoS2) was used as a co-catalyst to enhance the performance of the nanoscale zero-valent iron (nZVI) based Fenton-like process for Rhodamine B (RhB) degradation. The addition of MoS2 significantly accelerated H2O2 decomposition and increased the RhB degradation rate constant compared to the conventional Fenton process. Furthermore, the effective pH range was expanded to 9.0 with a high removal rate of RhB. The MoS2/nZVI system exhibited stability and reusability. The involvement of various reactive species, such as hydroxyl radicals, superoxide anions, and singlet oxygen, was confirmed through quenching tests and electron paramagnetic resonance. The toxicity of degradation products decreased after treatment, indicating the potential of this MoS2 co-catalytic nZVI-based Fenton-like process for organic wastewater treatment.
ENVIRONMENTAL RESEARCH
(2023)
Article
Engineering, Chemical
Yujun Cheng, Haoran Dong, Tianwei Hao
Summary: In this study, calcium carbonate coated nanoscale zero-valent iron (C-nZVI) was synthesized for Cr(VI) removal. The water chemistry had an influence on C-nZVI reactivity, with NO3 showing a positive effect on C-nZVI contrary to its influence on nZVI.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Review
Chemistry, Multidisciplinary
Meirong Li, Chenliu Tang, Weixian Zhang, Lan Ling
Summary: Nanoscale zero-valent iron (nZVI) and its based materials provide an efficient solution for removing arsenic from contaminated water. Arsenic can be efficiently removed through the adsorption, co-precipitation, and reduction process of nZVI. Factors such as initial solution pH, contact time, nZVI dosage, arsenic initial concentration, coexisting ions, and organic matters also affect the removal efficiency.
PROGRESS IN CHEMISTRY
(2022)
Review
Engineering, Environmental
Danlian Huang, Wenbo Xu, Lei Lei, Sha Chen, Cui Lai, Wei Zhou, Yashi Chen, Ruijin Li
Summary: This review systematically summarizes the strategies for promoting the generation of singlet oxygen (O-1(2)) in nanoscale zero-valent iron (nZVI) persulfate activation and the corresponding roles of O-1(2) in degrading pollutants, providing a new perspective for dealing with water pollution.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Applied
Simon A. Kondrat, Paul J. Smith, Li Lu, Jonathan K. Bartley, Stuart H. Taylor, Michael S. Spencer, Gordon J. Kelly, Colin W. Park, Christopher J. Kiely, Graham J. Hutchings
Article
Chemistry, Applied
Rebecca McVicker, Nishtha Agarwal, Simon J. Freakley, Qian He, Sultan Althahban, Stuart H. Taylor, Christopher J. Kiely, Graham J. Hutchings
Article
Chemistry, Physical
Tomas Garcia, Jose M. Lopez, Benjamin Solsona, Rut Sanchis, David J. Willock, Thomas E. Davies, Li Lu, Qian He, Christopher J. Kiely, Stuart H. Taylor
Article
Chemistry, Physical
Mariia V. Pavliuk, Sol Gutierrez Alvarez, Yocefu Hattori, Maria E. Messing, Joanna Czapla-Masztafiak, Jakub Szlachetko, Jose L. Silva, Carlos Moyses Araujo, Daniel L. A. Fernandes, Li Lu, Christopher J. Kiely, Mohamed Abdellah, Peter Nordlander, Jacinto Sa
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2019)
Article
Materials Science, Multidisciplinary
Ewa Nowicka, Sultan Althahban, Tom D. Leah, Greg Shaw, David Morgan, Christopher J. Kiely, Alberto Roldan, Graham J. Hutchings
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
(2019)
Article
Chemistry, Physical
Margherita Macino, Alexandra J. Barnes, Ruiyang Qu, Emma K. Gibson, David J. Morgan, Simon J. Freakley, Nikolaos Dimitratos, Christopher J. Kiely, Xiang Gao, Andrew M. Beale, Donald Bethell, Qian He, Meenakshisundaram Sankar, Graham J. Hutchings, Sultan M. Althahban
Article
Nanoscience & Nanotechnology
Abdolhamid Sadeghnejad, Li Lu, Joseph Cline, Nur K. Ozdemir, Mark A. Snyder, Christopher J. Kiely, Steven McIntosh
ACS APPLIED MATERIALS & INTERFACES
(2019)
Article
Chemistry, Multidisciplinary
Stefano Cattaneo, Danilo Bonincontro, Takudzwa Bere, Christopher J. Kiely, Graham J. Hutchings, Nikolaos Dimitratos, Stefania Albonetti
Review
Chemistry, Multidisciplinary
Meenakshisundaram Sankar, Qian He, Rebecca Engel, Mala A. Sainna, Andrew J. Logsdail, Alberto Roldan, David J. Willock, Nishtha Agarwal, Christopher J. Kiely, Graham J. Hutchings
Article
Chemistry, Multidisciplinary
Xi Sun, Simon R. Dawson, Tanja E. Parmentier, Grazia Malta, Thomas E. Davies, Qian He, Li Lu, David J. Morgan, Nicholas Carthey, Peter Johnston, Simon A. Kondrat, Simon J. Freakley, Christopher J. Kiely, Graham J. Hutchings
Article
Chemistry, Multidisciplinary
Leah C. Spangler, Joseph P. Cline, John D. Sakizadeh, Christopher J. Kiely, Steven McIntosh
Article
Chemistry, Multidisciplinary
Stefano Cattaneo, Sultan Althahban, Simon J. Freakley, Meenakshisundaram Sankar, Thomas Davies, Qian He, Nikolaos Dimitratos, Christopher J. Kiely, Graham J. Hutchings
Article
Chemistry, Physical
Charlotte Vogt, Esther Groeneveld, Gerda Kamsma, Maarten Nachtegaal, Li Lu, Christopher J. Kiely, Peter H. Berben, Florian Meirer, Bert M. Weckhuysen
Article
Chemistry, Multidisciplinary
Leah C. Spangler, Joseph P. Cline, Christopher J. Kiely, Steven McIntosh
Article
Chemistry, Physical
Ewa Nowicka, Sultan M. Althahban, Yuan Luo, Rene Kriegel, Greg Shaw, David J. Morgan, Qian He, Masashi Watanabe, Marc Armbruester, Christopher J. Kiely, Graham J. Hutchings
CATALYSIS SCIENCE & TECHNOLOGY
(2018)