Ta Lou, a silver medallist at the same event at the 2017 World Championships, finished third in a time of 10.90 behind Jamaica’s Shelly Ann Fraser-Pryce and Britain’s Dina Asher-Smith.
Ta Lou edged Jamaica’s Rio 2016 100 and 200m champion Elaine Thompson, who recorded a time of 10.93.
Fraser-Pryce, 32, claimed her fourth women’s 100m world title, winning the race in a time of 10.71. Asher-Smith ran in a time of 10.83, breaking her own national record in the process.
Ta Lou is set to compete in the women’s 200m qualifiers later on Monday running in the first heat. She also won silver in the event two years ago in London.
She will be one of seven representatives from Africa hoping to progress to the final.