Table 1 Lists of plant extracts used as corrosion inhibitors for metals and alloys in different solutions.

Capparis Spinoza leaves extract

0.5 M HCl

high carbon steel

97.0

²³

Capparis spinosa L. Extract

1.0 M HNO₃

Copper

82.7

²⁴

Capparis Spinosa Extract

1.0 M HCl

Carbon steel

93.19

²⁵

Capparis spinosa L. Extract

1.0 M NaOH

copper

79.3

²⁶

aqueous extract of Ammi isnaga (L.) Lam (AE-AV)

3 % NaCl

Cu-Zn alloy

91.67

²⁷

Essential oil from aerial parts of the Ruta Graveolens L. (RG-EO))

1 M HCl

Mild Steel

95.3%

²⁸

Artemisia argyi, Chrysanthemum indicum, and Centipeda minima extract

0.5 M H2SO4

Q235 steel

96.29%,96.50%, 97.52%, Respectively

²⁹

Carob fruit extract

3.5 % NaCl

Cu-10 Ni, Cu-30 Ni

92.6%, 83.2%, respectively

³⁰

Capparis Spinoza extract (CPS)

1 M HCl

carbon steel

90.6 %

Our results