asmawati @ fatin najihah alias, nur hazirah rozali annuar, nurul sahida hassan, sharifah najiha timmiati.  (2025).  synthesis and characterization of fe2o3/g-c3n4 photocatalyst from waste toner powder.  - malaysian journal of catalysis (mjcat).  16 - 21. 

fazilah farhana abd aziz, sharifah najiha timmiati, salma samidin, anees ameera fauzi, wan nor roslam wan isahak, nidya chitraningrum, aishah bt abd. jalil, azim fitri zainul abidin, mohd nur ikhmal salehmin.  (2025).  insight into supported single-atom catalysts design for thermocatalytic, electrocatalytic and photocatalytic conversion co2 to ch4.  - journal of industrial and engineering chemistry.  99 - 122. 

salma samidin, fazilah farhana abd aziz, nisa afiqah rusdan, khoirul solehah abdul rahim, g. abdulkareem-alsultan, sharifah najiha timmiati, wan nor roslam wan isahak .  (2025).  advancing co2 methanation with 3d-engineered catalysts: innovations, challenges, and future prospects.  - journal of alloys and compounds.  1 - 20. 

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. 

kean long lim, afifah kamal and sharifah najiha timmiati.  (2025).  hydrogen storage alloys as functional materials in dehydrogenation reactions of liquid organic hydrogen carrier.  - e-proceeding cardiff-xmum joint conference 2025 sustainable energy and climate challenge (secc).  61 - 61. 

zulaikha athirah alexzman, nurrulhidayah salamun, mohd lokman ibrahim, siti hajar anaziah muhamad, sharifah najiha timmiati, nur hazirah rozali annuar.  (2025).  tailoring properties and performance of chromium oxide based catalysts for sorbitol hydrogenolysis.  - iranian journal of catalysis (ijc).  1 - 8. 

nisa afiqah rusdan, sharifah najiha timmiati, fazilah farhana abdul aziz, salma samidin, taufiq yap yun hin, wan nor roslam wan isahak.  (2024).  boosted performance of co2-to-methanol by controlled synthesis of cu@al2o3 core-shell nanostructured catalyst.  - 1st international symposium on solar hydrogen (ssh2024).  . 

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, sharifah najiha timmiati, kean long lim, wan nor roslam wan isahak, nabila a. karim.  (2024).  gasification reaction on ceo2(111) and effects on the structural and electronic properties of adsorption molecules.  - chemical engineering and technology.  1 - 11. 

s. h. m. chachuli, w. y. wong, k. l. lim, s. n. timmiati.  (2024).  performance evaluation of p-block metal in orr.  - 1st international symposium on solar hydrogen (ssh2024).  . 

‘afifah kamal, sammy lap ip chan, sharifah najiha timmiati, kean long lim.  (2024).  metal hydride-based catalyst for dehydrogenation of methylcyclohexane (mch).  - 1st international symposium on solar hydrogen (ssh2024).  . 

sharifah najiha timmiati, lim kean long.  (2024).  peranan hidrogen dalam penyahkarbonan dunia.  - rencana bulanan pkaukm.  . 

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. 

norasyikin mat, sharifah najiha timmiati, lee peng teh.  (2023).  recent development in metal oxide-based core-shell material for co2 capture and utilisation.  - applied nanoscience.  3797-3817. 

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. 

teh lee peng;rizafizah binti othaman;sharifah najiha binti timmiati.  (2023).  elucidating the role of core-shell structure on the synergistic interaction of mgo/dendritic fibrous nanosilica for enhanced co2 capture and co2 dry reforming to syngas.  - .  . 

sharifah najiha binti timmiati;wan ramli bin wan daud;zahira binti yaakob;lim kean long;teh lee peng.  (2023).  ni@mesostructured silica nanoparticle (msn) core-shell catalyst for methane decomposition to hydrogen and filamentous carbon.  - .  . 

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. 

lim kean long;zahira binti yaakob;loh kee shyuan;sharifah najiha binti timmiati;wong wai yin.  (2022).  irradiation treated transition metal oxide-reduced graphene oxide (tmo-rgo) electrocatalyst for fuel cell applications.  - .  . 

siti fatimah azzahra mohd dan, jafreena adira jaafar, noorashikin md saleh, sharifah najiha timmiati, nur hidayatul nazirah kamarudin.  (2022).  temperature variation on doxorubicin adsorption by mesoporous silica nanoparticles and its effect towards release rate.  - journal of chemical engineering and industrial biotechnology.  8-13. 

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. 

sharifah najiha binti timmiati;zahira binti yaakob;lim kean long.  (2021).  study on the hydrogen storage properties of mixed metal hydride-catalyst composite for hydrogen-energy application.  - .  . 

muliani mansor, sharifah najiha timmiati, azran mohd zainoodin, khairunnisa mohd paad, kean long lim.  (2021).  investigation of palladium-mesostructured silica nanoparticles (pdmsn) as anode electrocatalyst for alkaline direct methanol fuel cell.  - chemical physics letters.  1-8. 

nur hidayatul nazirah binti kamarudin;abu bakar bin mohamad;sharifah najiha binti timmiati;wan nor roslam bin wan isahak.  (2021).  synthesis and functionalization of mesoporous silica nanoparticles with poly(2-vinylpyridine) for a stimuli-responsive drug carrier.  - .  . 

mahendra rao a/l somalu;lim kean long;sharifah najiha binti timmiati;husaini.  (2020).  development of novel proton conducting electrolyte for solid oxide fuel cell application.  - .  . 

nur shamimie nadzwin hasnan,sharifah najiha timmiati,kean long lim, zahira yaakob, nur hidayatul nazirah kamaruddin, lee peng teh.  (2020).  recent developments in methane decomposition over heterogeneous catalysts: an overview.  - materials for renewable and sustainable energy.  1-18. 

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. 

syahidah onn, nur hidayatul nazirah kamarudin, nur syazaliyana azali, jafreena adira jaafar, sharifah najiha timmiati, herma dina setiabudi.  (2020).  physical coating of mesoporous silica nanoparticles with poly (2-vinyl pyridine) and polyvinylpyrrolidone for the adsorption and release of 5- fluorouracil.  - malaysian journal of catalysis.  13-18. 

siti kartom binti kamarudin;wan ramli bin wan daud;mohd shahbudin bin mastar @ masdar;masli irwan bin rosli;lorna binti jeffery minggu;umi azmah binti hasran;mahendra rao a/l somalu;edy herianto;mimi hani binti abu bakar;lim kean long;loh kee shyuan;t. hu.  (2020).  development of smart power pack.  - .  . 

sharifah najiha binti timmiati;wan ramli bin wan daud;zahira binti yaakob;lim kean long;wan nor roslam bin wan isahak.  (2020).  bimetallic catalyst for reversible hydrogenation of liquid organic hydrogen carrier (lohc) system..  - .  . 

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.  . 

nurul zafirah abd. khalim khafidz, zahira yaakob, sharifah najiha timmiati, kuen-song lin, kean long lim.  (2019).  hydrogen sorption of magnesium oxide carbon nanofibre composite.  - malaysian journal of analytical sciences.  60-70. 

nur hidayatul nazirah binti kamarudin;sharifah najiha binti timmiati.  (2019).  tailorable and functionalizable porous-silica carbon nanomaterials (ps-cn) for the anti-cancer drugs adsorption and release.  - .  1-7. 

sharifah najiha binti timmiati;zahira binti yaakob;lim kean long;ifa puspasari.  (2019).  hydrogen production by glycerol steam reforming over metal loaded on graphene catalyst..  - .  1-4. 

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. 

l. p. teh, n. a. m. ismail, m. a. azman, s. n. timmiati, n. h. n. kamarudin, h. d. setiabudi, a. a. jalil.  (2019).  metal oxides-modified mesoporous silica nanoparticles for co2 capture.  - energy security and chemical engineering congress (esche) 2019.  143-144. 

lim kean long;zahira binti yaakob;loh kee shyuan;khuzaimah binti arifin;sharifah najiha binti timmiati.  (2019).  understanding the core-shell interaction in enhancing the performance and reversibility of sodium borohydride for hydrogen storage applications.  - .  . 

n a i md ishak , s k kamarudin and s n timmiati.  (2019).  green synthesis of metal and metal oxide nanoparticles via plant extracts: an overview.  - materials express research.  1-32. 

salihah azemi, khuzaimah arifin, rozan mohamad yunus, sharifah najiha timmiati.  (2019).  density functional theory studyof water adsorption on the coo (100) and coo (110) surfaces.  - international journal of integrated engineering.  241-246. 

ainul rasyidah abdul rahim, nur hidayatul nazirah kamarudin, sharifah najiha timmiati, rohayu jusoh, nur fatien muhamad salleh.  (2019).  polyethylene oxide functionalized mesoporous silica nanoparticles for ph- responsive quercetin release.  - materials today: proceedings.  1673-1681. 

jafreena adira jaafar, nur hidayatul nazirah kamarudin, herma dina setiabudi, sharifah najiha timmiati, teh lee peng.  (2019).  mesoporous silica nanoparticles and waste derived-siliceous materials for doxorubicin adsorption and release.  - materials today: proceedings.  1420-1425. 

nur syazaliyana azali, nur hidayatul nazirah kamarudin, ainul rasyidah abdul rahim, norzaidhatul syifaa jamal nasir, sharifah najiha timmiati, nur farhana jaafar.  (2019).  adsorption and release of 5-fluorouracil (5fu) from mesoporous silica nanoparticles.  - materials today: proceedings.  1722-1729. 

lim kean long;wan ramli bin wan daud;zahira binti yaakob;jamaliah binti md jahim;loh kee shyuan;sharifah najiha binti timmiati;wong wai yin.  (2018).  a one-pot approach for separation, purification and storage of biohydrogen.  - .  . 

lim kean long;wan ramli bin wan daud;zahira binti yaakob;loh kee shyuan;sharifah najiha binti timmiati.  (2018).  core-shell doped graphene for hydrogen storage.  - .  . 

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.  . 

muliani mansor,sharifah najiha timmiati, kean long lim, azran mohd zainoodin , nur hidayatul nazirah kamarudin.  (2018).  ni-based catalyst supported on mesostructured silica nanoparticles (msn) for methanol oxidation reaction (mor).  - jurnal kejuruteran.  . 

afifah bariman, mohd shahbudin masdar, sharifah najiha timmiati, kean long lim.  (2018).  metal hydride as a solution for biohydrogen separation, storage and purification.  - 2018 international conference on the biomass-environment-food-energy-water (befew) nexus.  . 

nurul zafirah abd khalim khafidz, zahira yaakob, sharifah najiha timmiati, kean long lim, kuen-song lin.  (2017).  hydrogen sorption of magnesium oxide nanofiber composite.  - 6th international conference on fuel cell & hydrogen technology (icfcht2017).  . 

shajaratul hidayah ami nordin, wai yin wong, sharifah najiha timmiati, kee shyuan loh, kean long lim.  (2017).  metal doped nano-carbonaceous materials for hydrogen storage.  - 6th international conference on fuel cell & hydrogen technology (icfcht2017).  . 

anis afifi roslan, kee shyuan loh, sharifah najiha timmiati, kean long lim.  (2017).  metal hydrides for biohydrogen separation, purification and storage: a review.  - 6th international conference on fuel cell & hydrogen technology (icfcht2017).  . 

anis afifi roslan, kee shyuan loh, sharifah najiha timmiati & kean long lim.  (2017).  metal hydrides for biohydrogen separation, purification and storage: a review.  - 6th international conference on fuel cell & hydrogen.  . 

shajaratul hidayah ami nordin, wai yin wong, sharifah najiha timmiati, kee shyuan loh & kean long lim.  (2017).  metal doped nano-carbonaceous materials for hydrogen storage.  - 6th international conference on fuel cell & hydrogen technology (icfcht2017).  . 

sharifah najiha badar, zahira yaakob , sharifah najiha timmiati.  (2017).  growth evaluation of microalgae isolated from palm oil mill effluent in synthetic media.  - malaysian journal of analytical sciences.  82-94. 

muliani mansor, sharifah najiha timmiati, nurhidayatul nazirah kamarudin & kean long lim.  (2017).  novel catalyst support for direct methanol fuel cell.  - 6th international conference on fuel cell & hydrogen technology (icfcht2017).  . 

nur shamimie nadzwin hasnan, sharifah najiha timmiati, kean long lim, nurhidayatul nazirah kamarudin.  (2017).  carbon-based catalyst for hydrogen production by steam reforming process.  - 6th international conference on fuel cell & hydrogen technology 2017.  . 

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. 

nur hidayatul nazirah kamarudin, aishah abdul jalil, sugeng triwahyono, sharifah najiha timmiati5.  (2016).  microwave-assisted synthesis of mesoporous silica nanoparticles as a drug delivery vehicle.  - malaysian journal of analytical sciences.  1382-1389. 

nzak khafidz, kl lim, sn timmiati, msa rahaman, z yaakob.  (2015).  synthesis of magnesium oxide electrospun carbon composite nanofibers for hydrogen storage.  - 28th symposium of malaysian chemical engineers 2015.  948-953.