Create infrared tone effect with PS

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Original picture
final renderings

1. Decolorization. In order to maintain better level details, we use the channel mixer to select a single color to complete the decolorization. As shown in the picture, select Single Color and then confirm.

2. Adjust the color and add a hue and saturation adjustment layer.
The setting data is as follows:

After adjustment, the following picture is obtained:

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3. To increase the level of black and white contrast, first stamp the layer with Shift+Ctrl+Alt+E, then make two copies, and set the image blending mode to Overlay and Screen respectively, with the opacity both being 70%.

Get the following effect:

4. Then stamp the composition and adjust the curve to enhance the contrast effect. The settings are as shown in the figure:


Result:

5. This effect looks more cyan, and finally adjust it with the optional color as follows:

Final rendering: