People
Graduate Student
Zhang Pengxiang
Title
PhD Student
Degree
Master of Science
Research Interests
Gas separation membrane
Research Group
Office Location
S9-09-01-15
Selected Publications
Zhao, Fei; Zhang, Leilei; Guo, Yao; Sheng, Hongchao; Zhang, Pengxiang; Zhang, Yixin; Li, Qian; Yang, Hongyi; Sergey V, Mikhalovsky
Mechanically strong and bioactive carbon fiber-SiC nanowire-hydroxyapatite-pyrolytic carbon composites for bone implant application
Ceramics International, Volume 47, Issue 3, 1 February 2021, Pages 3389-3400
ISSN: 0272-8842
I-FIM Publications:
2026 |
Ji, Zekai; Jayakumar, Sanjeevi; Limpo, Carlos Maria Alava; Madhav, Aravind; Trubyanov, Maxim; Zhang, Pengxiang; V, Daria Andreeva; Lee, Jong Hak; Ozyilmaz, Barbaros 3D interconnected pore networks enable superior volumetric CO2 uptake in amine-functionalized nanoporous carbon for direct air capture CARBON CAPTURE SCIENCE & TECHNOLOGY, 19 , 2026, DOI: 10.1016/j.ccst.2026.100600. @article{WOS:001724390300001, title = {3D interconnected pore networks enable superior volumetric CO2 uptake in amine-functionalized nanoporous carbon for direct air capture}, author = {Zekai Ji and Sanjeevi Jayakumar and Carlos Maria Alava Limpo and Aravind Madhav and Maxim Trubyanov and Pengxiang Zhang and Daria Andreeva V and Jong Hak Lee and Barbaros Ozyilmaz}, doi = {10.1016/j.ccst.2026.100600}, times_cited = {0}, issn = {2772-6568}, year = {2026}, date = {2026-06-01}, journal = {CARBON CAPTURE SCIENCE & TECHNOLOGY}, volume = {19}, publisher = {ELSEVIER}, address = {RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS}, abstract = {Direct Air Capture (DAC) is a critical technology for mitigating atmospheric CO2 concentrations, but current systems require substantial space and high energy input, largely due to the low volumetric CO2 capture capacity of existing sorbents. A major limitation arises from the intrinsic trade-off in conventional mesoporous platforms, where increasing amine loading often compromises CO2 diffusion efficiency, resulting in poor volumetric performance. In this report, we introduce a solid-state sorbent platform that overcomes this limitation by leveraging a fully interconnected three-dimensional (3D) pore network. The sorbent, composed of polyethyleneimine (PEI)-functionalized nanoporous amorphous carbon (NAC) millimeter-sized monoliths, features a hierarchically organized pore architecture with high volumetric pore density, enabling deep and uniform amine infiltration while maintaining unobstructed CO2 diffusion pathways. This synergistic pore design yields a remarkable volumetric CO2 uptake of similar to 1.6 mmol/cm & sup3; under pre-hydrated conditions-over threefold higher than that of the best-performing shaped sorbents reported to date. The NAC-PEI monoliths further exhibit cyclic stability, mechanical robustness, and negligible pressure drop, supporting their integration into compact and energy-efficient continuous DAC modules. These findings establish pore interconnectivity as a key design principle for next-generation solid sorbents, enabling space-efficient, high-performance carbon removal systems suitable for urban and distributed deployment.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Direct Air Capture (DAC) is a critical technology for mitigating atmospheric CO2 concentrations, but current systems require substantial space and high energy input, largely due to the low volumetric CO2 capture capacity of existing sorbents. A major limitation arises from the intrinsic trade-off in conventional mesoporous platforms, where increasing amine loading often compromises CO2 diffusion efficiency, resulting in poor volumetric performance. In this report, we introduce a solid-state sorbent platform that overcomes this limitation by leveraging a fully interconnected three-dimensional (3D) pore network. The sorbent, composed of polyethyleneimine (PEI)-functionalized nanoporous amorphous carbon (NAC) millimeter-sized monoliths, features a hierarchically organized pore architecture with high volumetric pore density, enabling deep and uniform amine infiltration while maintaining unobstructed CO2 diffusion pathways. This synergistic pore design yields a remarkable volumetric CO2 uptake of similar to 1.6 mmol/cm & sup3; under pre-hydrated conditions-over threefold higher than that of the best-performing shaped sorbents reported to date. The NAC-PEI monoliths further exhibit cyclic stability, mechanical robustness, and negligible pressure drop, supporting their integration into compact and energy-efficient continuous DAC modules. These findings establish pore interconnectivity as a key design principle for next-generation solid sorbents, enabling space-efficient, high-performance carbon removal systems suitable for urban and distributed deployment.
|
2025 |
Zhang, Pengxiang; Wang, Qian; Zhang, Yixin; Lin, Mo; Zhou, Xin; David, Ashish; Ustyuzhanin, Andrey; Chen, Musen; Katsnelson, Mikhail I; Trubyanov, Maxim; Novoselov, Kostya S; Andreeva, Daria V Strain-induced crumpling of graphene oxide lamellas to achieve fast and selective transport of H2 and CO2 17 NATURE NANOTECHNOLOGY, 20 (9), pp. 1254-1261, 2025, DOI: 10.1038/s41565-025-01971-8. @article{WOS:001528331800001, title = {Strain-induced crumpling of graphene oxide lamellas to achieve fast and selective transport of H2 and CO2}, author = {Pengxiang Zhang and Qian Wang and Yixin Zhang and Mo Lin and Xin Zhou and Ashish David and Andrey Ustyuzhanin and Musen Chen and Mikhail I Katsnelson and Maxim Trubyanov and Kostya S Novoselov and Daria V Andreeva}, doi = {10.1038/s41565-025-01971-8}, times_cited = {17}, issn = {1748-3387}, year = {2025}, date = {2025-09-01}, journal = {NATURE NANOTECHNOLOGY}, volume = {20}, number = {9}, pages = {1254-1261}, publisher = {NATURE PORTFOLIO}, address = {HEIDELBERGER PLATZ 3, BERLIN, 14197, GERMANY}, abstract = {Graphene oxide (GO) membranes offer high selectivity and energy-efficient gas separation. However, their dense, layered structure and tortuous diffusion paths limit permeability, posing a barrier to industrial use. Here we present a method to enhance selectivity and permeability, maintaining the structural stability of such membranes. With an industrially friendly manufacturing method, we produce crumpled GO membranes with gas diffusion pathways controlled by a multidomain structure. These membranes achieve H2 permeability of approximately 2.1 x 104 barrer, significantly surpassing the permeability of flat lamellar GO membranes, which is below 100 barrer. Its H2/CO2 selectivity of 91 outperforms current membrane technologies. In addition, the crumpled membranes demonstrate stability under harsh conditions (-20 degrees C, 96% relative humidity), a critical requirement for practical applications. This work addresses the long-standing permeability-selectivity trade-off and establishes a robust, scalable platform for integrating two-dimensional materials into membrane technology for real-world applications.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Graphene oxide (GO) membranes offer high selectivity and energy-efficient gas separation. However, their dense, layered structure and tortuous diffusion paths limit permeability, posing a barrier to industrial use. Here we present a method to enhance selectivity and permeability, maintaining the structural stability of such membranes. With an industrially friendly manufacturing method, we produce crumpled GO membranes with gas diffusion pathways controlled by a multidomain structure. These membranes achieve H2 permeability of approximately 2.1 x 104 barrer, significantly surpassing the permeability of flat lamellar GO membranes, which is below 100 barrer. Its H2/CO2 selectivity of 91 outperforms current membrane technologies. In addition, the crumpled membranes demonstrate stability under harsh conditions (-20 degrees C, 96% relative humidity), a critical requirement for practical applications. This work addresses the long-standing permeability-selectivity trade-off and establishes a robust, scalable platform for integrating two-dimensional materials into membrane technology for real-world applications.
|
Chen, Siyu; Zhang, Pengxiang; Zhao, Jinpei; Novoselov, Kostya S; Andreeva, Daria V Graphene oxide/DNA-aerogel pressure and acoustic sensor NANOSCALE HORIZONS, 10 (7), pp. 1405-1413, 2025, DOI: 10.1039/d5nh00117j. @article{WOS:001485294300001, title = {Graphene oxide/DNA-aerogel pressure and acoustic sensor}, author = {Siyu Chen and Pengxiang Zhang and Jinpei Zhao and Kostya S Novoselov and Daria V Andreeva}, doi = {10.1039/d5nh00117j}, times_cited = {6}, issn = {2055-6756}, year = {2025}, date = {2025-06-01}, journal = {NANOSCALE HORIZONS}, volume = {10}, number = {7}, pages = {1405-1413}, publisher = {ROYAL SOC CHEMISTRY}, address = {THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND}, abstract = {The increasing demand for health monitoring, voice detection, electronic skins, and human-computer interaction has accelerated the development of highly sensitive, flexible, and miniaturized pressure and acoustic sensors. Among various sensing technologies, piezoresistive sensors offer advantages such as simple fabrication, low power consumption, and broad detection ranges, making them well-suited for detecting subtle vibrations and acoustic signals. However, traditional piezoresistive materials, including metals and semiconductors, are inherently stiff and brittle, limiting their integration into wearable electronics and bio-integrated devices. To overcome these challenges, we introduce a graphene oxide (GO)/deoxyribonucleic acid (DNA) aerogel, synthesized via a self-assembly approach using pre-formed hydrogel membranes. This biodegradable and biocompatible aerogel features tunable pore sizes, low density, and excellent mechanical resilience. Upon reduction, the GO/DNA aerogel exhibits high piezoresistive sensitivity (1.74 kPa-1) in the low-pressure range (0-130 Pa), surpassing conventional pressure sensors. Additionally, it detects acoustic signals, achieving a sensitivity of 74.4 kPa-1, outperforming existing acoustic sensors. These findings highlight the potential of rGO/DNA aerogels as materials for next-generation wearable electronics, biomedical diagnostics, and soft robotics.}, keywords = {}, pubstate = {published}, tppubtype = {article} } The increasing demand for health monitoring, voice detection, electronic skins, and human-computer interaction has accelerated the development of highly sensitive, flexible, and miniaturized pressure and acoustic sensors. Among various sensing technologies, piezoresistive sensors offer advantages such as simple fabrication, low power consumption, and broad detection ranges, making them well-suited for detecting subtle vibrations and acoustic signals. However, traditional piezoresistive materials, including metals and semiconductors, are inherently stiff and brittle, limiting their integration into wearable electronics and bio-integrated devices. To overcome these challenges, we introduce a graphene oxide (GO)/deoxyribonucleic acid (DNA) aerogel, synthesized via a self-assembly approach using pre-formed hydrogel membranes. This biodegradable and biocompatible aerogel features tunable pore sizes, low density, and excellent mechanical resilience. Upon reduction, the GO/DNA aerogel exhibits high piezoresistive sensitivity (1.74 kPa-1) in the low-pressure range (0-130 Pa), surpassing conventional pressure sensors. Additionally, it detects acoustic signals, achieving a sensitivity of 74.4 kPa-1, outperforming existing acoustic sensors. These findings highlight the potential of rGO/DNA aerogels as materials for next-generation wearable electronics, biomedical diagnostics, and soft robotics.
|
Lin, Mo; Trubyanov, Maxim; Lee, Han Wei; Ivanov, Artemii S; Zhou, Xin; Zhang, Pengxiang; Zhang, Yixin; Wang, Qian; Tan, Gladys Shi Xuan; Novoselov, Kostya S; Andreeva, Daria V Enhanced CO2 Hydrogenation to Methanol Using out-of-Plane Grown MoS2 Flakes on Amorphous Carbon Scaffold 13 SMALL, 21 (11), 2025, DOI: 10.1002/smll.202408592. @article{WOS:001420874000001, title = {Enhanced CO2 Hydrogenation to Methanol Using out-of-Plane Grown MoS2 Flakes on Amorphous Carbon Scaffold}, author = {Mo Lin and Maxim Trubyanov and Han Wei Lee and Artemii S Ivanov and Xin Zhou and Pengxiang Zhang and Yixin Zhang and Qian Wang and Gladys Shi Xuan Tan and Kostya S Novoselov and Daria V Andreeva}, doi = {10.1002/smll.202408592}, times_cited = {13}, issn = {1613-6810}, year = {2025}, date = {2025-03-01}, journal = {SMALL}, volume = {21}, number = {11}, publisher = {WILEY-V C H VERLAG GMBH}, address = {POSTFACH 101161, 69451 WEINHEIM, GERMANY}, abstract = {The conversion of excess carbon dioxide (CO2) into valuable chemicals is critical for achieving a sustainable society. Among various catalysts, molybdenum disulfide (MoS2) has demonstrated potential for CO2 hydrogenation to methanol. However, its catalytic activity has yet to be fully optimized, and scalable, industrially viable production methods remain underdeveloped. In this work, a chemical vapor deposition (CVD) approach is introduced to grow vertically oriented MoS2 crystals on an amorphous carbon template. This method enhances the exposure of vacancy-rich basal planes, which are crucial for stable catalytic performance. The 2H-MoS2 flakes, supported on a conductive carbon scaffold, exhibit catalytic activity, achieving a net space-time yield of 2.68 g(MeOH) gcat(-)(1) h(-)(1) with a selectivity of 82.5% under mild conditions (264 degrees C, 10 bar). This work highlights a significant step toward the industrial application of MoS2-based catalysts for CO2 conversion, bridging the gap between fundamental research and scalable implementation.}, keywords = {}, pubstate = {published}, tppubtype = {article} } The conversion of excess carbon dioxide (CO2) into valuable chemicals is critical for achieving a sustainable society. Among various catalysts, molybdenum disulfide (MoS2) has demonstrated potential for CO2 hydrogenation to methanol. However, its catalytic activity has yet to be fully optimized, and scalable, industrially viable production methods remain underdeveloped. In this work, a chemical vapor deposition (CVD) approach is introduced to grow vertically oriented MoS2 crystals on an amorphous carbon template. This method enhances the exposure of vacancy-rich basal planes, which are crucial for stable catalytic performance. The 2H-MoS2 flakes, supported on a conductive carbon scaffold, exhibit catalytic activity, achieving a net space-time yield of 2.68 g(MeOH) gcat(-)(1) h(-)(1) with a selectivity of 82.5% under mild conditions (264 degrees C, 10 bar). This work highlights a significant step toward the industrial application of MoS2-based catalysts for CO2 conversion, bridging the gap between fundamental research and scalable implementation.
|
Chen, Siyu; Lee, Chang Jie Mick; Tan, Gladys Shi Xuan; Ng, Pei Rou; Zhang, Pengxiang; Zhao, Jinpei; Novoselov, Kostya S; Andreeva, Daria V Ultra-Tough Graphene Oxide/DNA 2D Hydrogel with Intrinsic Sensing and Actuation Functions 11 MACROMOLECULAR RAPID COMMUNICATIONS, 46 (1), 2025, DOI: 10.1002/marc.202400518. @article{WOS:001283478000001, title = {Ultra-Tough Graphene Oxide/DNA 2D Hydrogel with Intrinsic Sensing and Actuation Functions}, author = {Siyu Chen and Chang Jie Mick Lee and Gladys Shi Xuan Tan and Pei Rou Ng and Pengxiang Zhang and Jinpei Zhao and Kostya S Novoselov and Daria V Andreeva}, doi = {10.1002/marc.202400518}, times_cited = {11}, issn = {1022-1336}, year = {2025}, date = {2025-01-01}, journal = {MACROMOLECULAR RAPID COMMUNICATIONS}, volume = {46}, number = {1}, publisher = {WILEY-V C H VERLAG GMBH}, address = {POSTFACH 101161, 69451 WEINHEIM, GERMANY}, abstract = {Hydrogel devices with mechanical toughness and tunable functionalities are highly desirable for practical long-term applications such as sensing and actuation elements for soft robotics. However, existing hydrogels have poor mechanical properties, slow rates of response, and low functionality. In this work, two-dimensional hydrogel actuators are proposed and formed on the self-assembly of graphene oxide (GO) and deoxynucleic acid (DNA). The self-assembly process is driven by the GO-induced transition of double stranded DNA (dsDNA) into single stranded DNA (ssDNA). Thus, the hydrogel's structural unit consists of two layers of GO covered by ssDNA and a layer of dsDNA in between. Such heterogeneous architectures stabilized by multiple hydrogen bondings have Young's modulus of up to 10 GPa and rapid swelling rates of 4.0 x 10-3 to 1.1 x 10-2 s-1, which surpasses most types of conventional hydrogels. It is demonstrated that the GO/DNA hydrogel actuators leverage the unique properties of these two materials, making them excellent candidates for various applications requiring sensing and actuation functions, such as artificial skin, wearable electronics, bioelectronics, and drug delivery systems. The self-assembly of single stranded deoxynucleic acid (ssDNA) and double stranded (dsDNA) chains between graphene oxide (GO) nanolayers endows the hydrogel membrane with robust mechanical and rapid swelling properties. It can be employed to construct humidity and temperature sensors and exhibits excellent self-healing properties, which has great potential for wearable and healthcare devices. image}, keywords = {}, pubstate = {published}, tppubtype = {article} } Hydrogel devices with mechanical toughness and tunable functionalities are highly desirable for practical long-term applications such as sensing and actuation elements for soft robotics. However, existing hydrogels have poor mechanical properties, slow rates of response, and low functionality. In this work, two-dimensional hydrogel actuators are proposed and formed on the self-assembly of graphene oxide (GO) and deoxynucleic acid (DNA). The self-assembly process is driven by the GO-induced transition of double stranded DNA (dsDNA) into single stranded DNA (ssDNA). Thus, the hydrogel's structural unit consists of two layers of GO covered by ssDNA and a layer of dsDNA in between. Such heterogeneous architectures stabilized by multiple hydrogen bondings have Young's modulus of up to 10 GPa and rapid swelling rates of 4.0 x 10-3 to 1.1 x 10-2 s-1, which surpasses most types of conventional hydrogels. It is demonstrated that the GO/DNA hydrogel actuators leverage the unique properties of these two materials, making them excellent candidates for various applications requiring sensing and actuation functions, such as artificial skin, wearable electronics, bioelectronics, and drug delivery systems. The self-assembly of single stranded deoxynucleic acid (ssDNA) and double stranded (dsDNA) chains between graphene oxide (GO) nanolayers endows the hydrogel membrane with robust mechanical and rapid swelling properties. It can be employed to construct humidity and temperature sensors and exhibits excellent self-healing properties, which has great potential for wearable and healthcare devices. image
|
