mohd nur ikhmal salehmin, tiong sieh kiong, hassan mohamed, t.m. indra mahlia, nur atiqah mohamad aziz, sharifah najiha timmiati, zulfirdaus zakaria.  (2025).  transition pathway from blue to green ammonia production: comparative insight into technoeconomic, environmental, and policy framework.  - international journal of hydrogen energy.  147 - 178. 

siti haziyah mohd chachuli, sharifah najiha timmiati, kee shyuan loh, wai yin wong, kean long lim, rozan mohamad yunus.  (2025).  p-block cathode electrocatalysts: a critical review of their role and impact on oxygen reduction reaction in fuel cells applications.  - journal of industrial and engineering chemistry.  176 - 208. 

fazilah farhana abdul aziz, sharifah najiha timmiati, aishah abdul jalil, nisa afiqah rusdan, nur hazirah rozali annuar, teh lee peng.  (2024).  recent innovation on heterogeneous zno-based catalysts for enhanced co2 hydrogenation.  - journal of environmental chemical engineering.  1 - 18. 

nowilin james rubinsin, nabila a. karim, sharifah najiha timmiati, kean long lim, wan nor roslam wan isahak, manoj pudukudy.  (2024).  an overview of the enhanced biomass gasification for hydrogen production.  - international journal of hydrogen energy.  1139-1164. 

nurul atiqah izzati md ishak, siti kartom kamarudin , sharifah najiha timmiati, suhaila mohd sauid, nabila a karim, sahriah basri.  (2023).  green synthesis of platinum nanoparticles as a robust electrocatalyst for methanol oxidation reaction: metabolite profiling and antioxidant evaluation.  - journal of cleaner production.  1-18. 

nur shamimie nadzwin hasnan, manoj pudukudy, zahira yaakob, nur hidayatul nazirah kamarudin, kean long lim, sharifah najiha timmiati.  (2023).  promoting effects of copper and iron on ni/msn catalysts for methane decomposition.  - catalysts.  1-18. 

l.w. lai, l.p. teh, s.n. timmiati, n.h.n. kamarudin, h.d. setiabudi.  (2023).  a sustainable solution for diclofenac adsorption: chitosan-modified fibrous silica kcc-1 adsorbent.  - journal of environmental chemical engineering.  1-12. 

jivita darshini sinniah, wai yin wong , kee shyuan loh, rozan mohamad yunus, sharifah najiha timmiati.  (2022).  perspectives on carbon-alternative materials as pt catalyst supports for a durable oxygen reduction reaction in proton exchange membrane fuel cells.  - journal of power sources.  1-24. 

nisa afiqah rusdan, sharifah najiha timmiati, wan nor roslam wan isahak, zahira yaakob,kean long lim, dalilah khaidar.  (2022).  recent application of core-shell nanostructured catalysts for co2 thermocatalytic conversion processes.  - nanomaterials.  1-29. 

nurul n. sulaiman, mohammad ismail, sharifah n. timmiati, kean l. lim.  (2021).  improved hydrogen storage performances of lialh4 + mg(bh4)2 composite with tif3 addition.  - international journal of energy research.  1-17. 

ishak, n.a.i.m., kamarudin, s.k., timmiati, s.n., karim, n.a., basri, s..  (2021).  biogenic platinum from agricultural wastes extract for improvedmethanol oxidation reaction in direct methanol fuel cell.  - journal of advanced research.  63-75. 

n.n. sulaiman, m. ismail, a.h.a. rashid, n.a. ali, n.a. sazelee, s.n. timmiati.  (2021).  hydrogen storage properties of mg-li-al composite system doped with al2tio5 catalyst for solid-state hydrogen storage.  - journal of alloys and compounds.  1-11. 

l.p. teh, h.d. setiabudi, s.n. timmiati, m.a.a. aziz, n.h.r. annuar, n.n. ruslan.  (2021).  recent progress in ceria-based catalysts for the dry reforming of methane: a review.  - chemical engineering science.  1-17. 

nurul atiqah izzati md ishak, s.k. kamarudin, sharifah najiha timmiati, nabila karim, sahriah basri.  (2021).  enhanced performance of methanol oxidation reaction via green synthesis of platinum electro-catalyst from sugar cane bagasse.  - international journal of energy research.  7380-7403. 

nur shamimie nadzwin hasnan, , sharifah najiha timmiati, manoj pudukudy, zahira yaakob, kean long lim, yun hin taufiq-yap.  (2020).  catalytic decomposition of methane into hydrogen and carbon nanotubes over mesostructured silica nanoparticle-supported nickel catalysts.  - journal of porous materials.  369-382. 

muliani mansor, sharifah najiha timmiati, wai yin wong, azran mohd zainoodin, kean long lim and siti kartom kamarudin.  (2020).  nipd supported on mesostructured silica nanoparticle as efficient anode electrocatalyst for methanol electrooxidation in alkaline media.  - catalysts.  1-20. 

z. zakaria, s. k. kamarudin , s. n. timmiati, m. s. masdar.  (2019).  new composite membrane polyvinyl alcohol graphene oxide for direct ethanol proton exchange membrane fuel cell.  - journal of applied polymer science.  1-13. 

z. zakaria ,s. k. kamarudin, s. n. timmiati.  (2019).  influence of graphene oxide on the ethanol permeability and ionic conductivity of qpva-based membrane in passive alkaline direct ethanol fuel cells.  - nanoscale research letter.  . 

muliani mansor, sharifah najiha timmiati, kean long lim, wai yin wong, siti kartom kamarudin, nur hidayatul nazirah kamarudin.  (2019).  recent progress of anode catalysts and their support materials for methanol electrooxidation reaction.  - international journal of hydrogen energy.  14744-14769. 

ibdal satar, wan ramli wan daud, byung hong kim, mahendra rao somalu, mostafa ghasemi, mimi hani abu bakar, tahereh jafary, sharifah najiha timmiati.  (2018).  performance of titanium-nickel (ti/ni) and graphite felt-nickel (gf/ni) electrodeposited by ni as alternative cathodes for microbial fuel cells.  - journal of the taiwan institute of chemical engineers.  . 

z. zakaria,s.k. kamarudin, s.n. timmiati.  (2016).  membranes for direct ethanol fuel cells: an overview.  - applied energy.  334-342. 

nurul zafirah abd. khalim khafidz, zahira yaakob, kean long lim, sharifah najiha timmiati.  (2016).  the kinetics of lightweight solid-state hydrogen storage materials: a review.  - international journal of hydrogen energy.  13131-13151.