Dr Amir Razmjou Chaharmahali
Visiting Fellow

Dr Amir Razmjou Chaharmahali

Engineering
School of Chemical Engineering

“Spending more than a decade on teaching, research and development, Dr Razmjou has accrued multidisciplinary skills to develop innovative technologies for biomedical and environmental applications. He received his PhD in Chemical Engineering from UNSW, 2012. His surface architecturing skills using functional nanostructured materials alongside biofunctionalization have helped him to develop innovative membranes for desalination and water treatment, and nanobiosensors. Inspiring form nature, ion-selective nanochannels, and nanopores are strategically being designed to utilize for selectively controlling transportation phenomena in atomic scale. Dr Razmjou’s current research focuses on designing ion-selective nanostructured membranes for Lithium (Li) ion separations and resource recovery, developing advanced Biomicrofluidics systems using microfabrication technologies, and biocatalytic conversion of CO2 using membranes. Dr Razmjou, the editorial board member of Desalination, has published more than 100 peer-reviewed papers (Dec 2020) in related top-tier journals and supervised more than 20 postgraduate students. “
His current research focuses on designing ion selective membranes for Lithium (Li) ion separations and resource recovery, developing advanced Biomicrofluidics systems using microfabrication technologies and biocatalytic conversion of CO2.

  • Journal articles | 2023
    Golgoli M; Khiadani M; Sen TK; Razmjou A; Johns ML; Zargar M, 2023, 'Synergistic effects of microplastics and organic foulants on the performance of forward osmosis membranes', Chemosphere, vol. 311, http://dx.doi.org/10.1016/j.chemosphere.2022.136906
    Journal articles | 2023
    Karbassiyazdi E; Kasula M; Modak S; Pala J; Kalantari M; Altaee A; Esfahani MR; Razmjou A, 2023, 'A juxtaposed review on adsorptive removal of PFAS by metal-organic frameworks (MOFs) with carbon-based materials, ion exchange resins, and polymer adsorbents.', Chemosphere, vol. 311, pp. 136933, http://dx.doi.org/10.1016/j.chemosphere.2022.136933
    Journal articles | 2022
    Abdollahzadeh M; Chai M; Hosseini E; Zakertabrizi M; Mohammad M; Ahmadi H; Hou J; Lim S; Habibnejad Korayem A; Chen V; Asadnia M; Razmjou A, 2022, 'Designing Angstrom-Scale Asymmetric MOF-on-MOF Cavities for High Monovalent Ion Selectivity', Advanced Materials, vol. 34, pp. e2107878, http://dx.doi.org/10.1002/adma.202107878
    Journal articles | 2022
    Golmohammadi M; Habibi M; Rezvantalab S; Mehdizadeh Chellehbari Y; Maleki R; Razmjou A, 2022, 'Mechanism Understanding of Li-ion Separation Using A Perovskite-Based Membrane.', Membranes (Basel), vol. 12, pp. 1042 - 1042, http://dx.doi.org/10.3390/membranes12111042
    Journal articles | 2022
    Siekierka A; Bryjak M; Razmjou A; Kujawski W; Nikoloski AN; Dumée LF, 2022, 'Electro‐Driven Materials and Processes for Lithium Recovery—A Review', Membranes, vol. 12, http://dx.doi.org/10.3390/membranes12030343
    Journal articles | 2021
    Ahmadi H; Hosseini E; Cha-Umpong W; Abdollahzadeh M; Korayem AH; Razmjou A; Chen V; Asadnia M, 2021, 'Incorporation of Natural Lithium-Ion Trappers into Graphene Oxide Nanosheets', Advanced Materials Technologies, vol. 6, http://dx.doi.org/10.1002/admt.202000665
    Journal articles | 2020
    Cha-Umpong W; Hosseini E; Razmjou A; Zakertabrizi M; Korayem AH; Chen V, 2020, 'New molecular understanding of hydrated ion trapping mechanism during thermally-driven desalination by pervaporation using GO membrane', Journal of Membrane Science, vol. 598, http://dx.doi.org/10.1016/j.memsci.2019.117687
    Journal articles | 2020
    Cooper J; Kavanagh J; Razmjou A; Chen V; Leslie G, 2020, 'Treatment and resource recovery options for first and second generation bioethanol spentwash – A review', Chemosphere, vol. 241, http://dx.doi.org/10.1016/j.chemosphere.2019.124975
    Journal articles | 2020
    Cooper J; Ye Y; Razmjou A; Chen V, 2020, 'Application of dead-end ultrafiltration and hollow fibre transverse vibration systems as pre-treatment for the valorisation of bioethanol dunder', Journal of Membrane Science, vol. 597, http://dx.doi.org/10.1016/j.memsci.2019.117637
    Journal articles | 2020
    Cooper J; Ye Y; Razmjou A; Chen V, 2020, 'High-Value Organic Acid Recovery from First-Generation Bioethanol Dunder Using Nanofiltration', Industrial and Engineering Chemistry Research, vol. 59, pp. 11940 - 11952, http://dx.doi.org/10.1021/acs.iecr.9b06877
    Journal articles | 2020
    Daiyan R; Zhu X; Tong Z; Gong L; Razmjou A; Liu RS; Xia Z; Lu X; Dai L; Amal R, 2020, 'Transforming active sites in nickel–nitrogen–carbon catalysts for efficient electrochemical CO2 reduction to CO', Nano Energy, vol. 78, pp. 105213 - 105213, http://dx.doi.org/10.1016/j.nanoen.2020.105213
    Journal articles | 2020
    Ebrahimi F; Orooji Y; Razmjou A, 2020, 'Applying membrane distillation for the recovery of nitrate from saline water using pvdf membranes modified as superhydrophobic membranes', Polymers, vol. 12, pp. 1 - 14, http://dx.doi.org/10.3390/polym12122774
    Journal articles | 2020
    Ejeian F; Razmjou A; Nasr Esfahani MH; Mohammad M; Karamali F; Warkiani ME; Asadnia M; Chen V, 2020, 'ZIF-8 modified polypropylene membrane: A biomimetic cell culture platform with a view to the improvement of guided bone regeneration', International Journal of Nanomedicine, vol. 15, pp. 10029 - 10043, http://dx.doi.org/10.2147/IJN.S269169
    Journal articles | 2020
    Li Q; Lian B; Zhong W; Omar A; Razmjou A; Dai P; Guan J; Leslie G; Taylor RA, 2020, 'Improving the performance of vacuum membrane distillation using a 3D-printed helical baffle and a superhydrophobic nanocomposite membrane', Separation and Purification Technology, vol. 248, pp. 117072 - 117072, http://dx.doi.org/10.1016/j.seppur.2020.117072
    Journal articles | 2020
    Mohammad M; Lisiecki M; Liang K; Razmjou A; Chen V, 2020, 'Metal-Phenolic network and metal-organic framework composite membrane for lithium ion extraction', Applied Materials Today, vol. 21, pp. 100884 - 100884, http://dx.doi.org/10.1016/j.apmt.2020.100884
    Journal articles | 2020
    Razmjou A; Hosseini E; Cha-Umpong W; Korayem AH; Asadnia M; Moazzam P; Orooji Y; Karimi-Maleh H; Chen V, 2020, 'Effect of chemistry and geometry of GO nanochannels on the Li ion selectivity and recovery', Desalination, vol. 496, http://dx.doi.org/10.1016/j.desal.2020.114729
    Journal articles | 2019
    Cha-Umpong W; Dong G; Razmjou A; Chen V, 2019, 'Effect of oscillating temperature and crystallization on graphene oxide composite pervaporation membrane for inland brine desalination', Journal of Membrane Science, vol. 588, http://dx.doi.org/10.1016/j.memsci.2019.117210
    Journal articles | 2019
    Cooper J; Antony A; Luiz A; Kavanagh J; Razmjou A; Chen V; Leslie G, 2019, 'Characterisation of dissolved organic matter in fermentation industry effluents and comparison with model compounds', Chemosphere, vol. 234, pp. 630 - 639, http://dx.doi.org/10.1016/j.chemosphere.2019.05.272
    Journal articles | 2019
    Mohammad M; Razmjou A; Liang K; Asadnia M; Chen V, 2019, 'Metal-Organic-Framework-Based Enzymatic Microfluidic Biosensor via Surface Patterning and Biomineralization', ACS Applied Materials and Interfaces, vol. 11, pp. 1807 - 1820, http://dx.doi.org/10.1021/acsami.8b16837
    Journal articles | 2019
    Razmjou A; Asadnia M; Hosseini E; Habibnejad Korayem A; Chen V, 2019, 'Design principles of ion selective nanostructured membranes for the extraction of lithium ions', Nature Communications, vol. 10, http://dx.doi.org/10.1038/s41467-019-13648-7
    Journal articles | 2019
    Razmjou A; Eshaghi G; Orooji Y; Hosseini E; Korayem AH; Mohagheghian F; Boroumand Y; Noorbakhsh A; Asadnia M; Chen V, 2019, 'Lithium ion-selective membrane with 2D subnanometer channels', Water Research, vol. 159, pp. 313 - 323, http://dx.doi.org/10.1016/j.watres.2019.05.018
    Journal articles | 2017
    Orooji Y; Faghih M; Razmjou A; Hou J; Moazzam P; Emami N; Aghababaie M; Nourisfa F; Chen V; Jin W, 2017, 'Nanostructured mesoporous carbon polyethersulfone composite ultrafiltration membrane with significantly low protein adsorption and bacterial adhesion', Carbon, vol. 111, pp. 689 - 704, http://dx.doi.org/10.1016/j.carbon.2016.10.055
    Journal articles | 2017
    Razmjou A; Asadnia M; Ghaebi O; Yang HC; Ebrahimi Warkiani M; Hou J; Chen V, 2017, 'Preparation of Iridescent 2D Photonic Crystals by Using a Mussel-Inspired Spatial Patterning of ZIF-8 with Potential Applications in Optical Switch and Chemical Sensor', ACS Applied Materials and Interfaces, vol. 9, pp. 38076 - 38080, http://dx.doi.org/10.1021/acsami.7b13618
    Journal articles | 2016
    Hou J; Zulkifli MY; Mohammad M; Zhang Y; Razmjou A; Chen V, 2016, 'Biocatalytic gas-liquid membrane contactors for CO2 hydration with immobilized carbonic anhydrase', Journal of Membrane Science, vol. 520, pp. 303 - 313, http://dx.doi.org/10.1016/j.memsci.2016.07.003
    Journal articles | 2011
    Razmjou A; Mansouri J; Chen V, 2011, 'The effects of mechanical and chemical modification of TiO2 nanoparticles on the surface chemistry, structure and fouling performance of PES ultrafiltration membranes', Journal of Membrane Science, vol. 378, pp. 73 - 84, http://dx.doi.org/10.1016/j.memsci.2010.10.019

Advanced Lithium (Li) ion selective membranes: 

Dr Razmjou current research activities focus on designing Lithium ion selective membranes to be used in Li recovery, and Li selective electrodes and sensing.

Dr Razmjou’s experience and skills in developing “nanostructured materials” and “membranes” have been used for developing Li ion selective nanostructured membranes.

Razmjou’s group produced more than 55 publications about nanostructured materials and 40 papers directly related to membrane technology (Dec 2020). Dr Razmjou’s team was the first to discover that Li ions transport in a Zig-Zag fashion within the sub-nanometre channels due to the spontaneous breaking of charge symmetry[1]. The discovery that laid a foundation for his future work and was published in 2019 in Water Research entitled “Lithium ion-selective membrane with 2D subnanometer channels”, and is not only among highly cited papers but has also been chosen as a Hot Paper by the Web of Science.

Dr Razmjou is also pioneered in introducing a framework for the design of Li ion selective membranes[2]. The framework was published in Nature Communication 2019 entitled “Design principles of ion-selective nanostructured membranes for the extraction of lithium ions” and has been chosen among the “Top 50 Chemistry and Materials Sciences Articles” in Nature.

Using Molecular Dynamics (MD) simulation,  Dr Razmjou recently, studied the effect of chemistry and geometry of GO nanochannels on the Li ion selectivity and recovery[3]. In his  paper published in Desalination, He argued that the best way to boost Li ion selectivity is through creating asymmetry in morphology or chemistry of nanochannels.

One of the main obstacle hindering the commercial implementation of MOF and 2D based Li ion selective membranes is difficulty in scaling them up.  In his recently published work in Applied Materials Today (2020), he proved the possibility of creating a rapid and facile Li selective coherent MOF thin film on a “flexible polymeric” membrane[4], this is a significant step froward in commercial implementation of MOF materials.  Another main issue in creating Li ion selective membranes is microdefects. In his communication in Advanced Materials Interfaces, Dr Razmjou explained that the microdefects can bypass the high entry energy barrier of nanochannels and allow non-selective ionic transport through cracks or pinholes[5].

Dr Razmjou also interested in the incorporation of gust molecules as ion trappers into 2D based membranes. For instances in his recent work published in Advanced Materials technologies, that tannic acid (TA) inside graphene oxide (GO) nanochannel acts as natural ion trapper, which possesses lithiophilic elements[6].

Another current challenge in producing Li from brine is related to the fact that the extraction process of lithium from brine normally starts with a solar evaporation pond to increase the lithium concentration, which takes more than a year and is weather-dependent and has environmental concerns. Dr Razmjou actively is developing advanced processes for concentrating brine for lithium recovery. In his recent work published in Desalination, he evaluated the enrichment of lithium from salt lake brine using graphene oxide (GO) composite pervaporation membrane with the crystallizer unit[7].

 

References

1.           Razmjou, A., et al., Lithium ion-selective membrane with 2D subnanometer channels. Water Research, 2019. 159: p. 313-323.

2.           Razmjou, A., et al., Design principles of ion selective nanostructured membranes for the extraction of lithium ions. Nature Communications, 2019. 10(1).

3.           Razmjou, A., et al., Effect of chemistry and geometry of GO nanochannels on the Li ion selectivity and recovery. Desalination, 2020. 496.

4.           Mohammad, M., et al., Metal-Phenolic network and metal-organic framework composite membrane for lithium ion extraction. Applied Materials Today, 2020. 21: p. 100884.

5.           Razmjou, A., The Role of Defects in Li+ Selective Nanostructured Membranes: Comment on “Tunable Nanoscale Interlayer of Graphene with Symmetrical Polyelectrolyte Multilayer Architecture for Lithium Extraction”. Advanced Materials Interfaces, 2019. 6(2): p. 1801427.

6.           Ahmadi, H., et al., Incorporation of Natural Lithium-Ion Trappers into Graphene Oxide Nanosheets. Advanced Materials Technologies, 2020.

7.           Cha-umpong, W., et al., Concentrating brine for lithium recovery using GO composite pervaporation membranes. Desalination, 2020: p. 114894.