ϕ	Thiele modulus
Da	Damköhler number
L	Damköhler number
kcat	first-order rate constant of the catalytic reaction
	(in s–1)
Ds	intraparticle diffusion coefficient of the substrate
v	observed reaction rate (in mol s–1)
η	internal effectiveness factor
TOFapp	apparent TOF; rate normalized to the total
	amount of catalyst present
TOFtrue	only active catalyst considered in catalytic particle
ntotal	total moles of catalyst within the MOF particle
nactive	active moles of catalyst within the MOF particle
V	volume of the particle
Ccat	concentration of the catalyst
r	radial distance in spherical coordinates
R	radius of the particle
Dox	diffusivity of the sacrificial oxidant
Cox0	bulk oxidant concentration
Ccat0	total catalyst concentration
CS0	substrate concentration
D	electron hopping coefficient OR diffusion
	coefficient of the substrate
df	film thickness
dfopt	optimal film thickness
ΦH2	HER quantum yield
nH2	number of moles of H2 produced
nphoton	number of moles of photons absorbed
Ratehv	rate of photon absorption