A. J. Samaniego, M. Sarker, Z. Najafianashrafi, P. A. Chuang, M. Vasquez, J. Ocon, C. Xu, and R. Espiritu. Dimensionally stable
cellulose acetate-chitosan semi-interpenetrating polymer network as fuel cell anion exchange membrane.
ACS Applied Polymer Materials 6(15), 9047-9058, 2024. DOI: 10.1021/acsapm.4c01353
G. M. Quindoza, H. L. Mizuno, Y. Matsuyama, Y. Nakagawa, Y. Anraku, R. Espiritu and T. Ikoma. Substitution of europium (III)
in hydroxyapatite lattice for luminescence applications: Integrating experimental and theoretical insights.
Ceramics International 50(20), 39698-39709, 2024. DOI: 10.1016/j.ceramint.2024.07.349 (Open Access)
V. J. Garcia, X. Cheng, L. Rong, T. Ceniceros, E. Ricohermoso III, J. Cruz, R. Espiritu and R. Advincula. Thermomechanical
properties of stereolithographic 3D-printed zinc oxide nanocomposites. MRS Communications 14(4), 676-685, 2024.
DOI: 10.1557/s43579-024-00602-y
G. M. Quindoza, Y. Nakagawa, H. L. Mizuno, Y. Anraku, R. Espiritu and T. Ikoma. Site preference and local structural stability
of Bi(III) substitution in hydroxyapatite using first principles simulations. Physical Chemistry Chemical Physics
26(19), 14277-14287, 2024. DOI: 10.1039/d4cp00864b
J. Zhang, Q. Ling, Q. Wang, C. Xu, H. Wei and R. Espiritu. A quaternized poly(aryl piperidinium)/quaternary MXene-based
three-layer membrane for alkaline anion exchange membrane fuel cells. International Journal of Hydrogen Energy
56, 1-6, 2024. DOI: 10.1016/j.ijhydene.2023.11.299
D. Gutierrez, E. Caldona, Z. Yang, X. Suo, X. Cheng, S. Dai, R. Espiritu and R. Advincula. PDMS-silica composite gas
separation membranes by direct ink writing. Journal of Applied Polymer Science 140(33), e54277, 2023.
DOI: 10.1002/app.54277
L. Wang, Z. Fang, J. Zhang, C. Xu, R. Espiritu and J. Cheng. High-performance FeCo/NC-Mo2TiC2/carbon nanotube hybrid
support catalyst towards oxygen reduction for alkaline anion exchange membrane fuel cell. ACS Sustainable
Chemistry & Engineering 10(48), 15735-15740, 2022. DOI: 10.1021/acssuschemeng.2c04119
D. Gutierrez, E. Caldona, Z. Yang, X. Suo, X. Cheng, S. Dai, R. Espiritu and R. Advincula. 3D-printed PDMS-based membranes
for CO2 separation applications. MRS Communications 12(6), 1174-1182, 2022. DOI: 10.1557/s43579-022-00287-1
A. J. Samaniego and R. Espiritu. Prospects on utilization of biopolymer materials for ion exchange membranes in fuel cells.
Green Chemistry Letters and Reviews 15, 251-273, 2022. DOI: 10.1080/17518253.2022.2040599 (Open Access)
J. M. A. Abeleda Jr. and R. Espiritu. The status and prospects of hydrogen and fuel cell technology in the Philippines.
Energy Policy 162, 112781, 2022. DOI: 10.1016/j.enpol.2022.112781 (Open Access)
D. Gutierrez, E. Caldona, R. Espiritu and R. Advincula. The potential of additively manufactured membranes for selective
separation and capture of CO2. MRS Communications 11(4), 391-401, 2021. DOI: 10.1557/s43579-021-00062-8
A. J. Samaniego, A. K. Arabelo, M. Sarker, F. Mojica, J. Madrid, P. A. Chuang, J. Ocon and R. Espiritu. Fabrication of cellulose
acetate-based radiation grafted anion exchange membranes for fuel cell application. Journal of Applied Polymer
Science 138(10), e49947, 2021. DOI: 10.1002/app.49947
R. Espiritu, J. L. Tan, L. H. Lim and S. Arco. Density functional theory study on the degradation of anion exchange membranes
via removal of vinylbenzyl quaternary ammonium head group. Journal of Physical Organic Chemistry 33(5),
e4049, 2020. DOI: 10.1002/poc.4049
R. Espiritu, and A. Amorsolo Jr. Fabrication and characterisation of Cu-Zn-Sn shape memory alloy via an electrodeposition-
annealing route. International Journal of Minerals, Metallurgy and Materials 26(11), 1436-1449, 2019.
DOI: 10.1007/s12613-019-1886-6
R. Espiritu, B. Golding, K. Scott and M. Mamlouk. Degradation of radiation grafted anion exchange membranes tethered with
different amine functional groups via removal of vinylbenzyl trimethylammonium hydroxide. Journal of Power
Sources 375, 373-386, 2018. DOI: 10.1016/j.jpowsour.2017.07.074 (Open Access)
R. Espiritu, B. Golding, K. Scott and M. Mamlouk. Degradation of radiation grafted hydroxide anion exchange membrane
immersed in neutral pH: removal of vinylbenzyl trimethylammonium hydroxide due to oxidation. Journal of
Materials Chemistry A 5(3), 1248-1267, 2017. DOI: 10.1039/c6ta08232g (Open Access)
R. Espiritu, M. Mamlouk, and K. Scott. Study on the effect of the degree of grafting on the performance of polyethylene-based
anion exchange membrane for fuel cell application. International Journal of Hydrogen Energy 41(2), 1120-1133,
2016. DOI: 10.1016/j.ijhydene.2015.10.108 (Open Access)
K. Scott, M. Mamlouk, R. Espiritu and X. Wu. Progress in alkaline membrane fuel cells and regenerative fuel cells.
ECS Transactions 58(1), 1903-1906, 2013. DOI: 10.1149/05801.1903ecst
R. Espiritu and A. Amorsolo Jr. DSC analysis of Cu–Zn–Sn shape memory alloy fabricated via electrodeposition route.
Journal of Thermal Analysis and Calorimetry 107(2), 483-487, 2012. DOI: 10.1007/s10973-011-1465-1
R. Espiritu and A. Amorsolo Jr. SEM-EDX analysis of intermetallic phases in a Cu-Zn-Sn shape memory alloy. Microscopy
and Analysis 24(6), 15-17, 2010. [Link]
R. Espiritu, R. Navarro and E. Del Rosario. Development of membranes from bacterial cellulose (Nata de Coco) for the
separation of copper (II) ions using polyelectrolyte-enhanced ultrafiltration. Philippine Agricultural Scientist 87(1),
87-95, 2004. [Link]