Article
Engineering, Environmental
Ying Liang, Lu Tang, Jun Jiang, Meng-li Li, Hua-gang Lv, Yong He, Hong-yu Liu, Sheng-guo Xue
Summary: In this study, by utilizing the dual support effect of coupling surface-modified carbon black with a surfactant, the removal capacity and mobility of nanoscale zero-valent irons (nZVIs) were enhanced for in situ remediation of contaminated groundwater.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Biotechnology & Applied Microbiology
Oriol Gibert, Damian Sanchez, Jose Luis Cortina
Summary: This study compares the potential of four different polymer-stabilized nano zero-valent iron (nZVI) in removing nitrate (NO-3) from groundwater and assesses the effect of combined supplementation of polymer-stabilized nZVI and acetate on NO-3 reduction. The results show that Tween80-stabilized nZVI outperforms other polymer-stabilized nZVI in removing NO-3 from water. Coupling Tween80-coated nZVI and acetate enhances both the overall NO-3 removal and the conversion of reduced NO-3 to N2(g). This study demonstrates the potential of Tween80-stabilized nZVI in remediating NO-3-contaminated groundwater.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2023)
Article
Environmental Sciences
Huiping Tang, Wencai Cheng, Yunpeng Yi, Congcong Ding, Xiaoqin Nie
Summary: Fe-0/APTES-GO composites show promising results in removing U(VI) due to the reducing activity of Fe-0 and abundant functional groups on the composites. Batch experiments demonstrate the effective removal of uranium by Fe-0/APTES-GO composites.
Article
Engineering, Environmental
Menghan Sun, Liangzhi Zou, Pengcheng Wang, Xinfei Fan, Zonglin Pan, Yanming Liu, Chengwen Song
Summary: This study proposes a membrane-based Fenton process with immobilized nano zero valent iron (NZVI) in a CNT membrane for efficient degradation of pollutants. The Fe0-CNT catalytic membrane enhances the generation rate of (OH)-O-center dot through the cycle of ferrous and ferric ions, while also improving mass transfer. The membrane shows high removal efficiency for various organic contaminants and is not significantly affected by environmental factors, suggesting its potential for wastewater treatment applications.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Changsheng Du, Nan Xu, Zihan Yao, Xu Bai, Yuxi Gao, Lei Peng, Baohua Gu, Jiating Zhao
Summary: This study investigates the effects of sulfate and phosphate on the removal kinetics of hexavalent chromium (Cr(VI)) by different nano zero-valent iron materials. The results reveal that sulfate promotes the reaction while phosphate inhibits it. When both sulfate and phosphate are present, the inhibition effect of phosphate is stronger than the promotion effect of sulfate. This study provides new insights into the efficient removal of Cr(VI) from contaminated water using nano zero-valent iron.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Osama Eljamal, Ramadan Eljamal, Ibrahim Maamoun, Ahmed M. E. Khalil, Tamer Shubair, Omar Falyouna, Yuji Sugihara
Summary: The study focused on developing a magnetic nanoscale zero-valent iron/zeolite (nZVI/Z) composite for efficient removal of ammonia-nitrogen (NH4+-N) from water. Batch experiments revealed optimal conditions and removal mechanisms for effective NH4+-N removal with nZVI/Z.
Article
Engineering, Environmental
Longwei Yin, Longjie Liu, Shen Lin, Gary Owens, Zuliang Chen
Summary: This paper investigates the simultaneous removal of arsenite and arsenate from groundwater using zero-valent iron nanoparticles (nZVI). The results show that nZVI can efficiently remove both species, and practical application also yields good results. The presence of other coexisting ions, such as phosphate and carbonate, affects the removal efficiency.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Keteng Li, Jialing Li, Fanzhi Qin, Haoran Dong, Wenjun Wang, Hanzhuo Luo, Deyu Qin, Chen Zhang, Hao Tan
Summary: This study utilized the Web of Science Core Collection database to examine the research trends and developments of nano zero valent iron (nZVI) for environmental remediation. Through bibliometric analysis using VOSviewer, Bibliometrix, and Microsoft Charticulator, the knowledge structure, hot topics, and future directions of nZVI research were revealed. The analysis identified four main research directions, including groundwater remediation, in situ soil remediation, adsorption-related research, and modification of nZVI and innovative applications. The study also highlighted the importance of Cr(VI) as a pollutant of interest and identified trends in electron transfer, S-nZVI, and copper as key research areas. Mechanisms, modification methods, drawbacks, and suggestions for nZVI applications were summarized. This research provides valuable insights for future studies and practical applications of nZVI.
JOURNAL OF CLEANER PRODUCTION
(2023)
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
Environmental Sciences
Fei Chai, Rui Zhang, Xiaobo Min, Zhihui Yang, Liyuan Chai, Feiping Zhao
Summary: In this study, nZVI was successfully anchored onto mussel-inspired polydopamine-coated cellulose nanocrystals to form CNCs-PDA-nZVI. CNCs-PDA-nZVI exhibited higher arsenic adsorption capacity and superior arsenic removal efficiency compared to pristine cellulose nanocrystals. The arsenic removal mechanisms of CNCs-PDA-nZVI involved adsorption-oxidation, coprecipitation, and inner-sphere complexation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Yi Wang, Lihu Liu, Xiong Yang, Steven L. Suib, Guohong Qiu
Summary: In this study, zero-valent iron was electrochemically oxidized to magnetic iron oxides, which showed high efficiency in removing As(V) from mining wastewaters. The results from simulated and actual wastewater experiments demonstrated that magnetic iron oxides, mainly magnetite and maghemite, had good adsorption capacity for As(V) and could achieve solid-liquid separation under a magnetic field. The removal ratio of As(V) was influenced by the potential and initial pH, and the presence of Cl- significantly enhanced the removal effect.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Qian Ma, Wei Teng, Yu Sun, Yanyan Chen, Yinghao Xue, Xiaoqian Chen, Chuning Zhang, Hua Zhang, Jianwei Fan, Yuping Qiu, Rongbing Fu
Summary: The core-shell structured nanoscale zero-valent iron encapsulated with mesoporous hydrated silica was prepared for efficient removal of heavy metals. The material exhibited high adsorption capacity for Pb(II), Cd (II), and As(V) at pH 5.0.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Multidisciplinary Sciences
Eslam Salama, Mahmoud Samy, Hassan Shokry, Gehan El-Subruiti, Asmaa El-Sharkawy, Hesham Hamad, Marwa Elkady
Summary: In this study, nano zero-valent iron (NZVI) was fabricated under optimum conditions and immobilized with silica and starch to form composite nanomaterials. The silica-modified NZVI showed the highest removal efficiency for hexavalent chromium (Cr(VI)). The presence of other ions and humic acid reduced the removal efficiency, but it could be improved by adding hydrogen peroxide. The reusability of silica-modified NZVI was investigated and the removal mechanism was suggested to be a physicochemical process. The study also demonstrated the potential of NZVI for long-term use in removing emerging water pollutants.
SCIENTIFIC REPORTS
(2022)
Article
Engineering, Environmental
Liyun Yang, Mengdan Gao, Tianci Wei, Tetsuya Nagasaka
Summary: NZVI loaded on zeolite 5A can efficiently remove As(V) in water, with the removal capacity almost unaffected by solution pH in the pH range of 4-12. However, the As(V) removal efficiency decreases with high concentrations of PO43- present in the solution. After 5 cycles, the NZVI-5A zeolite achieved an As(V) removal efficiency of 84.0% and could be separated from the solution using an external magnetic field.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Sittipranee Ploychompoo, Jingda Chen, Hanjin Luo, Qianwei Liang
JOURNAL OF ENVIRONMENTAL SCIENCES
(2020)
Article
Chemistry, Physical
Xin Zhou, Qianwei Liang, Boqian Yang, Yuyu Chen, Yuanyuan Fang, Hanjin Luo, Yushan Liu
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2020)
Review
Environmental Sciences
Tingting Zhou, Qianwei Liang, Xin Zhou, HanJin Luo, Wei Chen
Summary: The magnetic Zr-based metal organic framework @Polypyrrole was synthesized to remove Cr(VI) from water. The material possessed a core-double-shell structure with enhanced adsorption capability, and the removal mechanisms included electrostatic attraction, reduction, and chelation.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Nanoscience & Nanotechnology
Sittipranee Ploychompoo, Qianwei Liang, Xin Zhou, Chen Wei, Hanjin Luo
Summary: A novel zinc based metal-organic framework and polyacrylamide coated on reduced graphene oxide was developed as an effective adsorbent for the removal of arsenite from water, showing rapid removal efficiency and high stability. The adsorption mechanism involves a synergistic combination of chemisorption and physisorption, with the amide and hydroxyl groups dominating in the adsorption process.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2021)
Article
Chemistry, Physical
Ziqian Xue, Yawen Liu, Qinglin Liu, Yawei Zhang, Meng Yu, Qianwei Liang, Jianqiang Hu, Guangqin Li
Summary: In this study, we report a W-doping-induced phase transition strategy to synthesize W-Ni3S2/Ni7S6 heterojunctions, which exhibit low overpotential and good stability, making them promising noble-metal-free OER catalysts.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Analytical
Ziyu Zhao, Yawen Liu, Shenghui Wang, Zhehao Hu, Tingyi Huang, Meng Yu, Xin Chen, Cong Jiang, Qianwei Liang, Jianqiang Hu
Summary: Hollow porous La-doped Co3O4 nanoparticles were successfully synthesized and exhibited enhanced OER activity and high durability. The controllable synthesis method provides a new strategy for high-performance OER electrocatalysis.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Engineering, Environmental
Junjie Geng, Qianwei Liang, Wenyi Yu, Wei Chen, Guining Lu, Hanjin Luo
Summary: This study reports the use of nitrogen-enriched lignosulfonate exfoliated graphene oxide (NLEGO) as an efficient adsorbent for the removal of hexavalent chromium (Cr(VI)) from aqueous solution. The experimental results show that NLEGO has a strong adsorption capacity for Cr(VI) and can meet the industrial wastewater discharge standards. Density functional theory (DFT) simulations suggest that the adsorption mechanism of Cr(VI) on NLEGO involves electrostatic attraction, reduction, and surface chelation.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Yuanyuan Fang, Qianwei Liang, Ying Li, Hanjin Luo
Summary: Carbon doped strategy is an effective approach to enhance photo-Fenton degradation performance, but preparing high-efficiency C-doped photocatalysts has been a significant challenge. In this study, magnetic carbon-doped ZnFe2O4 was synthesized via a facile solvothermal-calcination route. The C-doped ZnFe2O4 exhibited excellent photo Fenton activity under visible light, showing promising capability for the degradation of tetracycline hydrochloride.
Article
Electrochemistry
Qianqing Wu, Zhenhui Li, Qianwei Liang, Rongkai Ye, Shuzhou Guo, Xiaobing Zeng, Jianqiang Hu, Aiqing Li
Summary: In this study, an electrochemical biosensor based on MXene-Au nanocomposites and G-quadruplex nano-amplification strategy was constructed for ultrasensitive detection of miRNA-377. The biosensor exhibited superior sensing performance with wide linear range and low limit of detection. It did not require any thermal cycling or reverse transcription process, meeting the sensing requirements of miRNA.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Bijun Geng, Xiaobing Zeng, Qianwei Liang, Li Tan, Yuyu Chen, Rongkai Ye, Jianqiang Hu
Summary: In this work, the redox reaction kinetics mechanism was used for the first time to reveal the sequential growth mechanism of gold and silver nanocrystals in Ag-Au-Ag heterojunction nanorods. The mechanism provides insight into the design and synthesis of other one-dimensional segmented metal nanostructures.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Environmental Sciences
Qianwei Liang, Xin Chen, Ruina Liu, Ke Xu, Hanjin Luo
Summary: This article reports a TiO2-ZnxCd1-xS graphene aerogel (TSGA) photocatalyst with high efficiency and stability for the removal of pollutants from water. The TSGA exhibited excellent performance in adsorption and visible light photocatalysis for the removal of Cr(VI), with a high removal rate reached after a short irradiation time. The TSGA also showed good stability and reusability, making it a promising candidate for efficient and sustainable heavy metal removal from polluted aqueous environments.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2023)
Article
Chemistry, Analytical
Shuzhou Guo, Yaping Lin, Ziqi Lian, Tao Zeng, Liangliang Wang, Rongkai Ye, Benlin Hong, Qianwei Liang, Qianqing Wu, Jianqiang Hu, Aiqing Li
Summary: In this study, a label-free ultrasensitive biosensor was successfully developed for instant detection of miRNA-21, which has wide applications in early diagnosis of diseases like cancer and acute kidney injury. The biosensor showed high sensitivity, wide linear range, low limit of detection, and demonstrated specificity, stability, and reproducibility in detecting miRNA-21 in real urine samples.
MICROCHEMICAL JOURNAL
(2023)
Article
Engineering, Environmental
Yuyu Chen, Qianwei Liang, Yuhui Deng, Yuliang Bin, Tao Wang, Hanjin Luo
Summary: Developing high-efficient, low-cost, and environmentally friendly catalysts for activating peroxymonosulfate (PMS) is a challenge. Novel catalysts of transition metal-nitrogen co-doped carbon materials, especially Fe-N-C, have shown superior performance for PMS activation. Through experiments, it is found that concave N, S co-doped iron-based carbon materials have significant activation ability for PMS and can efficiently degrade acetaminophen. Moreover, these materials have good pH adaptability and low leaching iron concentration.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Qianwei Liang, Yawen Liu, Ziqian Xue, Ziyu Zhao, Guangqin Li, Jianqiang Hu
Summary: A novel MOF nanofilm arrays (NiCoBDC-Fc) were grown on Ni foam using a multiscale structural regulation strategy. The morphology of NiBDC was regulated through the introduction of metal doping and defects, which increased the exposure of electrochemically active sites and adjusted the electronic structure of the Ni active center, thereby enhancing the OER performance of NiCoBDC-Fc/NF.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Yuyu Chen, Xiaobing Zeng, Yawen Liu, Rongkai Ye, Qianwei Liang, Jianqiang Hu
Summary: The study achieved structure transformation between Au-Pd alloy and core-shell icosahedral nanoparticles through a one-step aqueous-phase strategy, providing a way to modulate Pd's electronic structure and enhance its electrocatalytic ability towards the hydrogen evolution reaction.
CHEMICAL COMMUNICATIONS
(2021)